tag:blogger.com,1999:blog-12870667912465575792024-02-19T20:22:56.142-08:00Hemp and Natural Building in AustraliaShelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-1287066791246557579.post-86627561465183545212017-03-29T03:31:00.002-07:002017-04-02T03:39:24.999-07:00Maclean Hemp Understorey Extension<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUuuS5gNmxMDDWVA5RV0wNLc_j5O9nQ2fgH3bhns2EBdVahmng9WPJbr77Z33vhKxWN-aTQpySBy9hM4TAm7mWzOE6aQzgOs5Dx1YWs62gdYNIOP9DHJ1gbNtMoBydaf6RXAe5Eq2LHJg/s1600/IMG_4298.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUuuS5gNmxMDDWVA5RV0wNLc_j5O9nQ2fgH3bhns2EBdVahmng9WPJbr77Z33vhKxWN-aTQpySBy9hM4TAm7mWzOE6aQzgOs5Dx1YWs62gdYNIOP9DHJ1gbNtMoBydaf6RXAe5Eq2LHJg/s400/IMG_4298.JPG" width="400" /></a></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Location:</b><br />Maclean, mid north coast NSW<br /><br /><b>Type of Build:</b><br />Understory extension to relocated weatherboard Federation Cottage<br /><br /><b>Owner:</b><br />Eshana Bragg and Peter Cuming<br /><br /><b>Designer:</b><br />Eshana Bragg prepared DA Application<br /><br /><b>Builder:</b><br />Corey Thomson<br />Xylosinuous Building and Design<br /><br /><b>Size:</b><br />Gross addition 94m2<br /><br /><b>Cost:</b><br />TBA<br /><br /><b>Date of construction: </b><br />August 2013 – flooring yet to be completed<br /><br /><b>Purpose of Build:</b><br />Multi purpose space, providing an office and worksh<span style="font-family: "arial" , "helvetica" , sans-serif;">op space </span>for Sustainable Futures Australia, music studio, bathroom<span style="font-family: "arial" , "helvetica" , sans-serif;">, laundry </span>and woofer accommodation<br /><br /><b>Choice of Material:</b><br />Eshana looked at various methods of how to infill around the existing steel frame of the house. She wanted the material to have good thermal qualities. She looked at using Hebel, but had some difficulty determining how to the Hebel would be detailed around the steel frame. Eshana saw Klara Marosszeky from the Australian Hemp Masonry Company at a stall at the Sustainable Housing Expo at Mullumbimby. Once she held a block of the hemp masonry she knew she had found her building material. At the time she commenced building hemp<span style="font-family: "arial" , "helvetica" , sans-serif;"> masonry</span> was a relatively new building material but she was willing to take a risk to use a sustainable material. <br /><br /><b>Climate:</b><br />Zone 2 - Warm humid summer, mild winter<br /><br /><b>Local Council:</b><br />Clarence Valley Council <br /><br /><b>Obtaining Approval:</b><br />Eshana spoke to the senior building surveyor at Clarence Valley Council before lodgement and also got the building surveyor’s input on the DA (Development Application). Council officers look at the property before the DA was lodged and were very cooperative and interested. The DA was approved in 10 days. AHMC provided an Alternative Solution report to be submitted with the CC Application (Construction Certificate).<br /><b> </b></span><br />
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<tr><td class="tr-caption" style="text-align: center;">Walls left unrendered under balcony</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Construction:</b><br />The hemp walls were constructed over two workshops. The remainder of construction was carried out by Corey Thomson. A professional renderer was contracted to do the more visible parts of the render and Eshana, Peter and their interns carried out the remainder of the rendering.<br /><br /><b>Footings:</b><br />Concrete slab on ground<br /><br /><b>Floor:</b><br />Not yet completed but will be <span style="font-family: "arial" , "helvetica" , sans-serif;">polished concrete</span><br /><br /><b>Frame:</b><br />Existing steel frame, with some of the frame altered to allow space for triple sliding <span style="font-family: "arial" , "helvetica" , sans-serif;">doors </span>in the extension. Between the steel frame a recycled hardwood timber frame was constructed to provide support for the hemp walls.<br /><br /><b>Walls:</b><br />AHMC binder and Ecofibre horse bedding hemp were used to construct 300mm thick hemp walls. The builder wanted 300mm thick walls to provide <span style="font-family: "arial" , "helvetica" , sans-serif;">s<span style="font-family: "arial" , "helvetica" , sans-serif;">ufficient</span></span> thickness between the timber frame and the outside of the hemp wall. The timber frame is centrally located and the hemp walls also cover the steel frame. The hemp walls are rendered externally. Eshana and Peter engaged a professional renderer to render the walls that are visible from the front of the house and the renderer used a first coat of the AHMC <span style="font-family: "arial" , "helvetica" , sans-serif;">hemp r</span>ender and did a second coat of sand lime render over the top. The remainder of the walls were rendered by Eshana, Peter and their interns, who used a single coat of sand/lime render. They experimented with oxides to colour the render but finally chose to go with the colour naturally provided by the sand. Internally and externally around the entrance, under the protection of a large veranda, the walls have been left unrended. <span style="font-family: "arial" , "helvetica" , sans-serif;">On the inside of these walls</span> render has been used to create skirting and decorative window reveals.<br /><br /><b> </b></span><br />
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<b><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRgUpd2wW_CTa8zxNHRO7jRBDqS5cX2B5n7dhu0LMkenSbjJ2HMOYbcQwboP__L68Ot54ZHnBWD_BS2XWfRIhdBUwFKXz3uOngi4MCrFKbG3EkFnVDly1OPJ2aqnR0Jz0Eyjqrl-cUnE4/s1600/P1030327.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRgUpd2wW_CTa8zxNHRO7jRBDqS5cX2B5n7dhu0LMkenSbjJ2HMOYbcQwboP__L68Ot54ZHnBWD_BS2XWfRIhdBUwFKXz3uOngi4MCrFKbG3EkFnVDly1OPJ2aqnR0Jz0Eyjqrl-cUnE4/s400/P1030327.JPG" width="400" /></a></b></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Windows:</b><br />A mix of windows were used. Recycled timber windows, similar in style to the windows used in the upstairs part of the house, were used at the front of the extension. Taking inspiration from a historical cottage in Maclean built in the mid 1800s by a German settler, these windows were set toward the outside of the walls to provide deep reveals on the inside. Beautiful rendered decorative arches were put over the top of these windows. In the open plan workshop and office space high quality single glazed, using Viridian comfort glass, aluminium framed triple sliding doors from Yamba Glass were used, as well as large square tilt windows and louver windows.<br /><br /><b>Ceiling:</b><br />High ceilings of Gyprock Fyrcheck were installed on a treated pine frame, i<span style="font-family: "arial" , "helvetica" , sans-serif;"><span style="font-family: "arial" , "helvetica" , sans-serif;">nsulated</span> from vibrational sound by ru<span style="font-family: "arial" , "helvetica" , sans-serif;">bb</span>er inserts usually used in solar panel installation. </span>Ceiling cavity contains <span style="font-family: "arial" , "helvetica" , sans-serif;">G</span>reenstuff polyester bulk insulation with a double lay of insulation above the music studio. This was <span style="font-family: "arial" , "helvetica" , sans-serif;">installed</span> by Ia<span style="font-family: "arial" , "helvetica" , sans-serif;">n Brophy Builders. Eshana and peter report excellent sound insulation between the storeys of the house. Steel beams left<span style="font-family: "arial" , "helvetica" , sans-serif;"> exposed provide a sculptural element in the open plan <span style="font-family: "arial" , "helvetica" , sans-serif;">workshop</span> area, cotra<span style="font-family: "arial" , "helvetica" , sans-serif;">sting with the high set ceilings painted bright white.</span></span></span> Plywood together with acoustic insulation (to be installed)<br /><br /><b>Roof:</b><br />NA <br /><br /><b>Heating:</b><br />Small fan heater. The extension does not need much heating. <br /><br /><b>Cooling:</b><br />Not needed, in summer the extension has remained at 23 degrees when it has been 37 degrees outside.</span><br />
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<tr><td class="tr-caption" style="text-align: center;">Niches in walls</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Attractive window reveals</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Wall construction:</b><br />The
builder Corey Thomson had experience in rammed earth, but this was his
first hemp build. The hemp walls were built on a row of concrete besser
blocks at the bottom, with a moisture barrier under the besser blocks. Two
workshops were conducted to construct the hemp walls. Klara Marosszeky
and an assistant were paid to teach the workshops. Eshana and Peter paid
for Corey Thomson and his build team to attend and the workshop
participants each paid $300. The first two day workshop was attended by
10 people, mostly from the building industry and 15 people attended the
second workshop two weeks later, with the <span style="font-family: "arial" , "helvetica" , sans-serif;">builders</span> and owners continuing an<span style="font-family: "arial" , "helvetica" , sans-serif;"> extra day</span> to complete all the hemp walls. The hemp walls were all done
in the 5 days of workshops and the workshops used a 250L diesel pan
mixer owned by the AHMC. The initial render around the doors and
windows did not work well and a professional renderer was engaged to
remove and redo this render and it now has crisp edges. The
professional renderer also rendered over the besser block creating a
render skirting.<br /><br /><b>Formwork:</b><br />Plywood formwork with
attached horizontal timber walers, that the builder had from rammed
earth construction. The formwork was secured with threaded metal rod,
from one side of the formwork to the other. The holes in the hemp walls
from the rods were plugged later.</span></span><br />
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Section:</b><br /><b> </b></span><br />
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvnp_kyfiD0REw92Scn8CsznSUzPB5KCE5AD76IIwP0MArXZNGvqgnxyCgOLMBU-9eQQRY657KMuqN9ay84sFS_6OeyTVAYVeei4TfW96bUNq7F5T8gF70hEM5wBm-EjbC3qpaoJ8bHZM/s1600/Maclean+Detail.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvnp_kyfiD0REw92Scn8CsznSUzPB5KCE5AD76IIwP0MArXZNGvqgnxyCgOLMBU-9eQQRY657KMuqN9ay84sFS_6OeyTVAYVeei4TfW96bUNq7F5T8gF70hEM5wBm-EjbC3qpaoJ8bHZM/s640/Maclean+Detail.jpg" width="452" /></a></b></span></div>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Technical issues:</b></span><br />
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<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Some areas of hemp wall were insufficiently tamped by workshop participants and the walls were crumbly, particularly in the difficult to reach area under the steel beams. After a few weeks Eshana removed the crumbly section around a hole that had been left, <span style="font-family: "arial" , "helvetica" , sans-serif;">dampened</span> the area with a spray bottle of water and packed the area with new hemp masonry mix and covered <span style="font-family: "arial" , "helvetica" , sans-serif;">the repair </span>with a small piece of formwork screwed to the wall.</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">When by mistake a conduit was pushed out of alignment, the material was very forgiving and easy repair. Heat was needed to bend the conduit back into place and the hemp walls could easily withstand the heat of the blowtorch necessary to repair the conduit.</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">While the walls were left unrendered a Kookaburra pecked at a soft spot creating a hold in the wall for their nest. The hole created by the Kookaburras almost went all the way through the wall. Once discovered the Kookaburra hole was easily patched up with more mix.</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">High quality rendering is a professional job and for Eshana this was a costly mistake when she had to get the work done again.</span></li>
<li><span style="font-family: "arial" , "helvetica" , sans-serif;">Eshana is still assessing the pros and cons of using a breathable wall in a damp environment.</span></li>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Advice/Recommendations:</b><br />Go for it. Hemp building is a great community building activity. It can be done with an extended family, neighbours or a community and anyone can participate from kids to the elderly (Eshana’s dad at 80 was able to help out as much as other crew).<br />If you host a workshop, make sure that you keep the participants well fed, to keep them happy and avoid them flagging at the end of the day. For workshops also be well prepared, if you want any different shapes in the hemp have the formwork done prior to the workshop.<br />Hemp building is still a bit experimental and if working with an inexperienced crew this can lead to mistakes that have to be fixed and more expense. But it's worth it!<br /><br /><b>Contact:</b><br />Eshana Bragg <br />eshana@sustainablefutures.com.au<br /><br />Corey Thomson<br />Xylosinuous Building and Design<br />0419 715 820<br />Xylosinuous.com.au</span><br />
<br />Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com6tag:blogger.com,1999:blog-1287066791246557579.post-822405859976599992017-03-29T03:09:00.001-07:002017-03-29T03:09:52.846-07:00Main Arm Hemp Music Studio<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgH0D6_jv35Sk2pP2UCyFDCAkB8rCe0nfpA1_oggRlGRvKcoGlMASwgP7DjLJNXjoGiyvLT287tIBUEbn63eHkww6E5oR5ZjyBYS9QcHI4bA_T9iE4e7mEi_rErr6ck0PtMfFI660gl7nU/s1600/IMG_4368.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgH0D6_jv35Sk2pP2UCyFDCAkB8rCe0nfpA1_oggRlGRvKcoGlMASwgP7DjLJNXjoGiyvLT287tIBUEbn63eHkww6E5oR5ZjyBYS9QcHI4bA_T9iE4e7mEi_rErr6ck0PtMfFI660gl7nU/s400/IMG_4368.JPG" width="300" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Front view</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Location:</b><br />Main Arm, near Mullumbimby, NSW North Coast<br /><br /><b>Type of Build:</b><br />Sound proof music studio constructed as infill to an existing pole structure<br /><br /><b>Owner:</b><br />Sheldon Lieberman and Olivia Laws<br /><br /><b>Designer:</b><br />NA<br /><br /><b>Builder:</b><br />Nicholas Jouin, Permastructure<br /><br /><b>Size:</b><br />Studio 21m2<br /><br /><b>Cost:</b><br />Est $45,000<br /><br /><b>Date of construction: </b><br />October 2015 – February 2016<br /><b><br />Purpose of Build:</b><br />Soundproof music studio<br /><br /><b>Choice of Material:</b><br />Sheldon had seen Andrew Wadsworth’s hemp house at Mullumbimby. He was impressed that Andrew’s house was warm in winter whereas his house was cold. He was attracted to hemp because of the thermal advantages, the look of the hemp and that there was no need to paint it. Sheldon could also tell that the hemp walls has good acoustic properties.</span><br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjhYhluDd-BDyfMF6Pt94lQXM5DNKmpiSOWgreqdqpkuNrMTHk3Hg5L2OudrwTRJXmue3xdnp7uiWlf8emn6QjzGoUEvB-FLc6xk_AyQrzonw1OpgxnH00G_YngQMU-Cn8ANi7SgXvddg/s1600/P1030395.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjhYhluDd-BDyfMF6Pt94lQXM5DNKmpiSOWgreqdqpkuNrMTHk3Hg5L2OudrwTRJXmue3xdnp7uiWlf8emn6QjzGoUEvB-FLc6xk_AyQrzonw1OpgxnH00G_YngQMU-Cn8ANi7SgXvddg/s400/P1030395.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Internal walls unrendered</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Climate:</b><br />Zone 2 - Warm humid summer, mild winter<br /><br /><b>Local Council:</b><br />Byron Shire Council<br /><br /><b>Obtaining Approval:</b><br />As a non habitable structure, the studio did not require Council approval<br /><br /><b>Construction:</b><br />Builder Nicholas Jouin, of Permastructure, was engaged to construct the studio. He had a background in earthbag building and had built a hemp studio for Andrew Wadsworth at Mullumbimby.<br /><br /><b>Footings:</b><br />Existing concrete slab on ground. This slab was not level and did not have appropriate termite detailing. The concrete slab had to be levelled and termite traps were installed around the studio.<br /><br /><b>Floor:</b><br />Timber floor on battens and acoustic foam.<br /><br /><b>Frame:</b><br />Existing pole frame, with timber frame added between poles to support hemp walls.<br /><br /><b>Walls:</b><br />Hemp walls using AHMC binder and hemp. The rear wall is 300mm and the remainder are 260mm. This was because the existing concrete slab had a raised lip on the back wall that they wanted to cover. The back wall also faces the neighbours and the thicker wall provided additional sound dampening. <br />The walls were left unrendered internally and finished with Sodium silicate (Waterglass) to prevent dusting. A number of cracks developed in the walls and these were covered with artistic render patterns. Feature render was also used around windows and doors.<br />Externally the walls were rendered by the builder, Nicholas Jouin, using AHMC hemp render.</span><br />
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<tr><td class="tr-caption" style="text-align: center;">Skirting detail</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Windows:</b><br />PVC framed double glazed argon filled windows.<br /><br /><b>Ceiling:</b><br />Floorboards of room above, acoustic insulation, acoustic plasterboard, and acoustic wood wool panels.<br /><br /><b>Roof:</b><br />Existing shed structure. Colorbond flashing was used on the back wall where there was a change in thickness of the wall from the existing Colorbond cladding and the hemp wall.<br /><br /><b>Heating:</b><br />Reverse cycle air conditioning (this is rarely used for heating).<br /><br /><b>Cooling:</b><br />Reverse cycle air conditioning. When in use the studio needs to be closed up for soundproofing purposes, the air conditioning deals with the heat generated in the studio from its use.<br /><br /><b>Wall construction:</b><br />The hemp walls were constructed by Nicholas Jouin of Permastructure. He gained experience working with hemp, building the studio for Andrew Wadsworth at Mullumbimby. The builder used an old cement mixer to mix the hempcrete for the walls. I was mostly the builder and one or two labourers working on the project, with a maximum team of four. <br /><br /><b>Formwork:</b><br />Formply<br /><br /><b> </b></span><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgeVptK_xFYkFt3Mp05-DycGfEFyVMyh8f_xWtm5IY1X3wzNxjsmIHBP8HQH7w5b5ud54Jvt34HM04-Kz5SGM2KpC4ZJjZ73nLIAOtfmaT1P_49weETVkdzMLTVITsVh_sDt_hnHcZSsCs/s1600/P1030417.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgeVptK_xFYkFt3Mp05-DycGfEFyVMyh8f_xWtm5IY1X3wzNxjsmIHBP8HQH7w5b5ud54Jvt34HM04-Kz5SGM2KpC4ZJjZ73nLIAOtfmaT1P_49weETVkdzMLTVITsVh_sDt_hnHcZSsCs/s400/P1030417.JPG" width="400" /></a><br />
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Technical issues:</b><br />A number cracks developed in the walls. This was only a problem because Sheldon wanted to leave the walls unrenderd internally. The cracks were patched and covered with render in artistic whale and plant designs.<br /><br /><b>Advice/Recommendations:</b><br />Sheldon expected the hemp walls to have better sound insulation and expected the studio to be more sound proof than it is, but has found that the acoustics are good and the studio has a good feel.<br /><br /><b>Contact:</b><br />Builder, Nicholas Jouin<br />Nicholas.jouin@permastructure.com.au</span>Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com3tag:blogger.com,1999:blog-1287066791246557579.post-54704284098902755552017-03-29T02:19:00.000-07:002017-03-29T02:23:49.936-07:00Mullumbimby Hemp Studio<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjuQ0SNnENr4KgEtRPjwOMkENnojny8V_9JaJ9YmuvBEUqI6SedZUNpqb1DAHsKAUtF5VeDU8AbbRApzn9Inu62SFKDpJeXt8JJpaODLhueLEQMoLwKq7oItgcal1nIrzaYdkjNF6m4ZPc/s1600/IMG_4418.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjuQ0SNnENr4KgEtRPjwOMkENnojny8V_9JaJ9YmuvBEUqI6SedZUNpqb1DAHsKAUtF5VeDU8AbbRApzn9Inu62SFKDpJeXt8JJpaODLhueLEQMoLwKq7oItgcal1nIrzaYdkjNF6m4ZPc/s400/IMG_4418.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Rear view of studio</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Location:</b><br />Mullumbimby, NSW North Coast<br /><br /><b>Type of Build:</b><br />Studio/extra bedroom, with bathroom and kitchenette<br /><br /><b>Owner:</b><br />Andrew Wadsworth and Meggie Danielson<br /><br /><b>Designer:</b><br />Jaye Irving, Barefoot Sustainable Design, barefootdesign.com.au (concept design)<br />Graham Harper, Harper Design Arc (detail design and plans)<br /><b><br />Builder:</b><br />Andrew undertook the studio project as owner builder and engaged carpenter Nicholas Jouin of Permastructure<br /><br /><b>Size:</b><br />32 m2studio plus mezzanine total 38m2<br /><br /><b>Cost:</b><br />$67,000 plus rendering and landscaping total est $75,000<br />Hemp materials cost $4,000 + $1,000 render<br /><br /><b>Date of construction:</b> <br />August 2015 - December 2015<br /><br /><b>Purpose of Build:</b><br />To provide a flexible space that could operate as an extra bedroom to the main house or as self contained accommodation<br /><br /><b>Choice of Material:</b><br />The main house was built of hemp. Due to cost only one wall of the studio was built with hemp. <br /><b> </b></span><br />
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<tr><td class="tr-caption" style="text-align: center;">Hemp wall left unrendered</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Climate:</b><br />Zone 2 - Warm humid summer, mild winter<br /><br /><b>Local Council:</b><br />Byron Shire Council<br /><br /><b>Obtaining Approval:</b><br />Approval was obtained at the same time as the main house, with a subsequent s96 variation of approval for the studio. Building surveyor Dwane Roberts of DP Roberts Planning Solutions was engaged to assist with the approval of the main building.<br /><br /><b>Construction:</b><br />Andrew acted as owner builder and engaged carpenter Nicholas Jouin to do most of the construction work. The hemp wall was constructed during a workshop. Balanced Earth Building rendered the studio externally</span><span style="font-family: "arial" , "helvetica" , sans-serif;"><b> </b></span><span style="font-family: "arial" , "helvetica" , sans-serif;"></span><br />
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<tr><td class="tr-caption" style="text-align: center;">Internal view</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Footings:</b><br />Slab on ground. The slab for the studio was poured at the same time as the main house. <br /><br /><b>Floor:</b><br />Polished concrete, and timber on mezzanine<br /><br /><b>Frame:</b><br />Timber frame, 90 mm T2 termite treated pine, made on site<br /><br /><b>Walls:</b><br />200mm thick hemp wall using AHMC binder and hemp. Rendered externally with AHMC render by Balanced Earth Building. The hemp wall has been left unrendered internally and will be finished with a breathable clear finish. The other walls are clad with corrugated Zincalume over Kingspan Aircell R2 insulation and plasterboard internally<br /><br /><b>Windows:</b><br />Aluminium framed, single glazed <br /><br /><b>Ceiling:</b><br />150mm Bondor Insulroof panels, the larger 150mm size was required because of the span<br /><br /><b>Roof:</b><br />Bondor Insulroof panels providing R 3.53 and finished with corrugated Colorbond in shale grey (check insulation on 150)<br /><br /><b>Heating:</b><br />None <br /><br /><b>Cooling:</b><br />Ceiling fan <br /><br /><b>Wall construction:</b><br />A workshop was conducted by Klara Marosszeky from AHMC to build the walls. This was attended by Nicholas Joiun, four builders including those from Balanced Earth and three other participants. The workshop was held over three days with one day of formwork and two days of hempcrete placement. (Do you know what type of mixer was used?)<br /><br /><b>Formwork:</b><br />Marine ply black seconds fixed to the framework with batten screws</span><br />
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<tr><td class="tr-caption" style="text-align: center;">External hemp wall rendered</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Technical issues:</b><br />Ensure good communication with trades and contractors and confirm what has been agreed upon<br /><br /><b>Advice/Recommendations:</b><br />When engaging builders and trades get recommendations from and speak to other clients<br />Take care in contracts as to what is allowed for PC items<br /><br /><b>Contact:</b><br />Andrew Wadsworth</span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif;">andrew@mullum.it<br /><br />Nicholas Jouin<br />Permastructure</span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif;">nicholas.jouin@permastructure.com.au<br /><br />Balanced Earth Building</span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif;">office@balancedearthbuilding.com</span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif;">ph 0415 739 767<br /><br /><b>Note:</b><br />The hemp studio is available for rent on Air BNB</span>Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com2tag:blogger.com,1999:blog-1287066791246557579.post-80183490018093945892017-03-29T02:18:00.000-07:002017-03-29T02:22:29.021-07:00Mullumbimby Hemp House<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3lwggrmMB_jKRR-92JCqV1CHBnwxV5PKPnWMpNkMd7_83MzBUswxsuujaPF2UNtWoeMzfhf4Ivnl9PkLYAxmaM9WbMHAiNbbPkRTNqIis5XLetQfO5TvVixDoEJ1pwapUgjBAs-OdpZQ/s1600/P1030429.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3lwggrmMB_jKRR-92JCqV1CHBnwxV5PKPnWMpNkMd7_83MzBUswxsuujaPF2UNtWoeMzfhf4Ivnl9PkLYAxmaM9WbMHAiNbbPkRTNqIis5XLetQfO5TvVixDoEJ1pwapUgjBAs-OdpZQ/s320/P1030429.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Front of house</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Location:</b><br />Mullumbimby, NSW North Coast<br /><br /><b>Type of Build:</b><br />New two/three bedroom residence<br /><br /><b>Owner:</b><br />Andrew Wadsworth and Meggie Danielson<br /><br /><b>Designer:</b><br />Jaye Irving, Barefoot Sustainable Design, barefootdesign.com.au (concept design)<br />Graham Harper, Harper Design Arc (detail design and plans)<br /><br /><b>Builder:</b><br />Corey Thomson<br />Xylosinuous Building and Design<br /><br /><b>Size:</b><br />125m2 plus decks (170m2 including decks)<br /> 210m2 incl studio (see separate entry)<br /><br /><b>Cost:</b><br />$287,000 plus finishes and kitchen est $40,000, est total $327,000<br />Est $390,000 including studio<br /><br /><b>Date of construction: </b><br />August 2014 – April 2015<br /><br /><b>Purpose of Build:</b><br />Residential home <br /><br /><b>Choice of Material:</b><br />Andrew was interested in using sustainable building materials and Architect Jaye Irving linked Andrew up to the “Green Building Centre” at Byron Bay (greenbuildingcenter.net.au) and suggested he have a look at hempcrete. In 2013 Andrew did a hemp building workshop with Hempcrete Australia where he met builder Corey Thomson. Corey then put Andrew in contact with the Australian Hemp Masonry Company.<br /><br /><b>Climate:</b><br />Zone 2 - Warm humid summer, mild winter<br /><br /><b>Local Council:</b><br />Byron Shire Council<br /><br /><b>Obtaining Approval:</b><br />Building surveyor Dwane Roberts of DP Roberts Planning Solutions was engaged to assist with the approval process and Andrew had no problems obtaining Council approval.</span><br />
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<tr><td class="tr-caption" style="text-align: center;">Rear of house</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Construction:</b><br />Builder Corey Thomson of Xylosinuous Building and Design, was contracted to undertake the main construction works. Andrew arranged the kitchen and rendering separately<br /><br /><b>Footings:</b><br />Concrete slab on ground<br /><br /><b>Floor:</b><br />Polished concrete, with timber in the bedroom and kitchen. The concrete was set down in the kitchen to allow the timber floor to finish level with the polished concrete<br /><br /><b>Frame:</b><br />Timber frame, 90mm untreated pine, with T2 termite treated pine for the bottom platebottom plate. The frame was made on site.<br /><br /><b>Walls:</b><br />300m thick hemp walls using AHMC binder and hemp. The frame is centrally placed and the walls were 300mm thick to fit the builders existing formwork. Hemp walls are finished externally with a sand lime render and internally are partially rendered with AHMC hemp render and partially left unrendered. The second storey is clad in corrugated Zincalume with Kingspan Aircell R2 insulation. The the double height hemp feature wall at the front is clad externally in Hibiboard short timber (not sure what this is, can you provide more detail?). Internal partition walls were finished with plasterboard</span><br />
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<tr><td class="tr-caption" style="text-align: center;">Rendered window reveal</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Windows:</b><br />Aluminium single glazed and second hand timber windows<br /><br /><b>Ceiling:</b><br />125mm Bondor Insulroof panels<br /><br /><b>Roof:</b><br />Bondor Insulroof panels providing R 3.53 and finished with corrugated Colorbond in shale grey<br /><br /><b>Heating:</b><br />None <br /><br /><b>Cooling:</b><br />Ceiling fan in main living area<br /><br /><b>Wall construction:</b><br />The walls were constructed by Builder Corey Thomson. He had previously done a hemp building workshop with Hempcrete Australia and worked as the builder on a hemp extension at Maclean and did a hemp building workshop with Klara Marosszeky of AHMC as part of the construction at Maclean. A horizontal shaft compulsory mixer was used to make the hempcrete <br /><br /><b>Formwork:</b><br />450mm high Formply formwork that the builder had from rammed earth work</span><br />
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<tr><td class="tr-caption" style="text-align: center;">Internal showing half rendered and half natural hemp wall</td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Technical issues:</b><br />Problems were encountered with windows leaking, and insufficient fall in a bathroom floor but these problems were not associated with the hemp walls<br /><br /><b>Advice/Recommendations:</b><br />Get and architect or building designer that you can rely on and can work with.<br />Getting help from a planner to explain the process and get Council approval was of great assistance.<br />Andrew regrets not having more hemp walls but was constrained by budget<br /><br /><b>Contact:</b><br />Andrew Wadsworth<br />Andrew@mullum.it<br /><br />Corey Thomson<br />Xylosinuous Building and Design<br />0419 715 820<br />Xylosinuous.com.au</span><br />
<br />Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com3tag:blogger.com,1999:blog-1287066791246557579.post-37639103159806798672016-10-29T04:22:00.005-07:002016-10-31T04:57:45.338-07:00Marrickville Award Wining Hemp Extension<div class="separator" style="clear: both; text-align: center;">
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<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Hemp walls with second story clad in timber</span></td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Location:</b><br />Marrickville, Sydney, NSW<br /><br /><b>Type of Build:</b><br />Two story extension to single story semi detached house<br /><br /><b>Owner:</b><br />Holly Askins and Simon Rumble<br /><br /><b>Designer: </b><br />Tracy Graham<br />Connected Design<br />www.connecteddesign.com.au <br />0405 431 119<br /><br /><b>Builder: </b><br />Nick Sowden<br />Sowden Building Solutions <br />http://www.sowdenbuildingsolutions.com.au<br />0433 323 513 </span><br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX2-8ntibQEqcgHc1QpFZtrgg6eDll569Pw6a575pIQA3Mv-sEyfhyphenhyphenm0Lp9qPsxkdICxb1AX2g7BAQ2enCS5kzkntbZTNu6P7zB0SMzqSQ7Sl_oAfeg-ELk39q8H4PQDKdDGoEH3brx8Y/s1600/P1010838.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX2-8ntibQEqcgHc1QpFZtrgg6eDll569Pw6a575pIQA3Mv-sEyfhyphenhyphenm0Lp9qPsxkdICxb1AX2g7BAQ2enCS5kzkntbZTNu6P7zB0SMzqSQ7Sl_oAfeg-ELk39q8H4PQDKdDGoEH3brx8Y/s640/P1010838.JPG" width="640" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Unrendered wall finished with Waterglass</span></td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Size:</b> </span></span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif;">195sqm block <br />Property 130sqm - First Floor addition 35sqm <br /><br /><b>Cost: </b><br />$450,000<br />Includes : New extension and addition; new front fence; replacement of slate roof at front; new metal deck roof to old part of roof; insulation for existing roof and subfloor; subfloor ventilation; asbestos removal; new side access gate; solar hot water; kitchen appliances and paint to whole house <br /><br /><b>Date of construction: </b><br />July 2015 – November 2015 <br /><br /><b>Purpose of Build: </b><br />Main Brief was to improve the connection to the garden at the rear of the property whilst respond to northern solar access. Provide an additional bedroom, study and small bathroom with a second storey addition. Replace existing bathroom and laundry down stairs. Create a new open plan Kitchen and Dining area. The existing footprint was retained and the space rearranged creating a separate living space much needed for a growing family. <br /><br /><b>Choice of Material</b>: <br />Hempcrete was suggested by the builder for its low embodied energy, high thermal performance and breathability. it was easy to see it had so many positives in particular a monolithic wall system, instead of a multi layered wall system, thus fewer building materials and relatively easy construction method. </span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Climate: </b><br />Zone 5, Warm Temperate<br /><br /><b>Local Council: </b><br />Marrickville Council <br /><br /><b>Obtaining Approval:</b> <br />Approval was tricky as the builidng had to comply with Acoustic controls (due to aircraft noise). There was a lot of discussion between designer, builder, hemp supplier and acoustic engineer to show how the building would not only meet but exceeded the acoustic requirements. The DA was slowed initially negotiations took place with a neighbour over a shared chimney. Holly and Simon also had to compromise and use an alternative wall system on the boundary between the semi detached buildings as the hempcrete wall did not have testing for the required fire rating. <br /><br /><b>Construction: </b><br />Built by Sowden Building Solutions. (Building Designer, Tracy Graham volunteered 1 day to help with the hempcrete walls) <br /><br /><b>Footings:</b> <br />Concrete strip footings <br /><br /><b>Floor: </b><br />Ground floor level – new area insulated burnished concrete slab <br />First floor level - timber framed floor, with tongue and groove Australian beach hardwood flooring over<br /> <br /><b>Frame: </b><br />70mm timber stud frame <br /><br /><b>Walls: </b><br />The Australian Hemp masonry company supplied hemp hurd and binder. 200mm thick walls with frame in the middle. Lime render by heritage renderer with lime wash paint externally. Silicate paints internally. Hempcrete walls exposed internally finished with Waterglass. Second storey hempcrete wall finished externally with timber cladding.</span><br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXD8JUPWF0RaH0JmgPsFljHVsf9jYqT4FnSoYPTFROkT1GaI4d54mlE2SGMWmJAN2Fz-b9qEHupdUYz9y-myPC2XW1xNimY1d2_EEq-AChSZs7yXl1dzPstbF-gBgVIqJ3oyLV1oZn3Xg/s1600/P1010848.JPG" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiXD8JUPWF0RaH0JmgPsFljHVsf9jYqT4FnSoYPTFROkT1GaI4d54mlE2SGMWmJAN2Fz-b9qEHupdUYz9y-myPC2XW1xNimY1d2_EEq-AChSZs7yXl1dzPstbF-gBgVIqJ3oyLV1oZn3Xg/s400/P1010848.JPG" width="300" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Hemp walls finished with lime render and lime paint</span></td></tr>
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Windows: </b><br />Rylock aluminium double glazed with laminate glass to comply with acoustic requirements <br /><br /><b>Ceiling:</b> <br />Magnesium oxide board for ceiling. Rafters were filled with a lighter mix of hempcrete - no sand. <br /><br /><b>Roof: </b><br />Metal deck roofing on 190mm timber rafters and timber battens with 60mm foil backed fibre glass. <br /><br /><b>Heating:</b> <br />Bayonet allowed for gas heating in new dining room, which has not been used much.<br /><br /><b>Cooling: </b><br />Ceiling fans, including Big Ass fan in Dining room <br /><br /><b>Wall construction:</b> <br />The builder, Nick Sowden, learn<span style="font-family: "arial" , "helvetica" , sans-serif;">ed</span> to build with hemp by attending a course with Australian Hemp Masonry and also plenty of reading - particularly The <br />Hempcrete Book by Alex Sparrow and William Stanwix. The team was only four strong, one person mixing for the entire duration, one labourer placing the hempcrete and the builder and a carpenter placing and working the formwork when needed. Tracy Graham the building designer worked on the first day of hemp walling as well! Two 120L hired screed mixers were used.<br /><br /><b>Formwork: </b><br />Construction ply </span><br />
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<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Section Diagram: </b></span><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiAKz_uKbOAFQw8AAhLjSOffGPcFBMf1XTusmVh_Thr37mqj-33CBdXcEm75cNyADSvoYWnMBWXttBtHrmBi0vOBFTyBv03yiKbzy7FdYfvJ2R2JneHBH7a0Vo3Kv-PJ9cwPmrb-ynjyTU/s1600/Marrickville+Section.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiAKz_uKbOAFQw8AAhLjSOffGPcFBMf1XTusmVh_Thr37mqj-33CBdXcEm75cNyADSvoYWnMBWXttBtHrmBi0vOBFTyBv03yiKbzy7FdYfvJ2R2JneHBH7a0Vo3Kv-PJ9cwPmrb-ynjyTU/s640/Marrickville+Section.jpg" width="452" /></a></div>
<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Technical issues: </b><br />Over stacker door; plumbing; day cracks. Finish on concrete floor <br />Salt leaching through render from old brick wall which was rendered over (with hemp wall built on top) which required remedial works to suck the salts out of the brickwork and re-render. This was done using a product called "cocoon" from Westox. <br /> <b><br />Advice/Recommendations:</b></span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif;">Plan every detail of where anything may need to hang in future, including awnings, privacy screens, power points and even a speaker. </span><br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi3a7rIySUFS7ssVs4pajFZbyYtRqxLzS4JiuzYcfQLS-6grVTPPzvnR3VoTVuw1asWlenehIMUiC8Qd2W1wU5Be7zmma_Lrb-FirOgFd-aj-7tfyZBj2w2MVyfjnjLX8qgb8vFPsdthNc/s1600/Connected_0080.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi3a7rIySUFS7ssVs4pajFZbyYtRqxLzS4JiuzYcfQLS-6grVTPPzvnR3VoTVuw1asWlenehIMUiC8Qd2W1wU5Be7zmma_Lrb-FirOgFd-aj-7tfyZBj2w2MVyfjnjLX8qgb8vFPsdthNc/s400/Connected_0080.jpg" width="266" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Photo: Lena Barridge - Corner Studio</td></tr>
</tbody></table>
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<b><span style="font-family: "arial" , "helvetica" , sans-serif;">Awards:</span></b><br />
<span style="font-size: small;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Winner Marrickville Council Medal </span></span><br />
<span style="font-size: small;"><span style="font-family: "arial" , "helvetica" , sans-serif;">
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<span style="font-size: small;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Sustainable Building Award 2016</span></span><br />
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<span style="font-size: small;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Commendation Chris Reardon Memorial Aware for Residential Sustainable Buildings</span></span><br />
<span style="font-size: small;"><span style="font-family: "arial" , "helvetica" , sans-serif;">2016 National Building Designers Australia Awards</span></span><br />
<span style="font-size: small;"><span style="font-family: "arial" , "helvetica" , sans-serif;"> </span></span>
<span style="font-family: "arial" , "helvetica" , sans-serif;"><br /><b>Contact: </b><br />Holly Askins <br />Owner <br />0415 334 386<br /><br />Tracy Graham <br />Connected Design <br />www.connecteddesign.com.au <br />0405 431 119<br /><br />Nick Sowden <br />Sowden Building Solutions <br />http://www.sowdenbuildingsolutions.com.au/ <br />0433 323 513</span></div>
Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com3tag:blogger.com,1999:blog-1287066791246557579.post-71141220318834828432015-08-04T02:03:00.003-07:002016-10-29T04:24:23.771-07:00Violet Town Hemp House<!--[if gte mso 9]><xml>
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<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Location:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Violet
Town, Victoria</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Type of Build:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Single
story detached residence</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Owner:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Neil
and Sandy Garrett</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Designer:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "arial" , "sans-serif";">Neil
Garrett</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Builder:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Neil
Garrett (Owner Builder)</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Size: </span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">24
squares (223m<sup>2</sup>)</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Cost:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Est
$200,000</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Date of
construction:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Commenced
<span style="mso-spacerun: yes;"> </span>2013 est. completion 2015</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Purpose of Build:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">2/3
bedroom residential home</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Choice of Material:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">Neil and
Sandy had read about hemp building and first saw a sample at the Hemp Embassy
in Nimbin. They had stayed at “Bramare” a rammed earth house in Bendigo run by
the Otis Foundation for people recovering from breast cancer. They loved the
feel of the house and the colour. They investigated rammed earth, but it looked
like a lot of work for owner builders. Hemp used a similar technique of
creating a monolithic wall using a system of shuttering and had the added
benefit of being insulative. Neil and Sandy have used natural materials
throughout the build, choosing to build with plantation timber, avoiding
rainforest timber or hardwood. They have also reused materials and used pre
owned or reject materials, giving them a new life.</span></div>
<div class="MsoNormal">
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRgagAJ6WWMlRE46KO0tb6JdhJziXRI6m51KtB2YU_LTWzCnP_owknLWSFN8xtZgk9kuvri3Yvi_IdT1OXhzhxPzqsWoQTK29E6nSaKZNA4EK4iDToNahXLSAX_fwRf_vMRLIDf-UsKpo/s1600/P1000691.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRgagAJ6WWMlRE46KO0tb6JdhJziXRI6m51KtB2YU_LTWzCnP_owknLWSFN8xtZgk9kuvri3Yvi_IdT1OXhzhxPzqsWoQTK29E6nSaKZNA4EK4iDToNahXLSAX_fwRf_vMRLIDf-UsKpo/s320/P1000691.JPG" width="240" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Oxides used to colour different mixes</span></td></tr>
</tbody></table>
</div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Climate:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Zone
7 - Cool Temperate</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Local Council:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Strathbogie
Council but did not use</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Obtaining Approval:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">The
building permit was obtained on the basis that the Hempcrete product was
certified to conform with the requirements of the BCA. The private building
surveyor assessed the structural plans as suitable, then the hemp was passed as
it was just infill. The house needed to meet 6 energy stars and did so with
250mm hemp walls, giving a R rating of 3.5 to 4.<span style="mso-spacerun: yes;"> </span><span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Construction:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">All
work carried out by Neil and Sandy Garrett, except for plumbing and electrical.
To build Neil used St Astier (French) binder supplied by Hempcrete Australia.
He has been experimenting in recent constructions with binder recipes making it
from local materials with good results.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Footings:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">Concrete
slab on ground, to the north.<span style="mso-spacerun: yes;"> </span>Slab is
100mm thick with edge beam and has 50mm expanded polystyrene slab edge
insulation. To the south timber bearers and joists, with silver streak
insulation under joists, brick perimeter wall on concrete strip footing. No
termite barrier as T2 termite treated timber used for frame, subfloor and roof.</span>
<span style="font-family: "helvetica" , "sans-serif";"></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Floor:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">It
was intended to polish the concrete slab to the north but have decided on a
floating bamboo floor for comfort levels. Timber floor with silver streak
insulation under joists to the south.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Walls:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">250mm hemp
walls, using St Astier (French) binder supplied by Hempcrete Australia, cast around 90mm by 45mm F5 T2 pine frame at 600
centres. Render; sand, lime and blast furnace slag.</span></div>
<div class="MsoNormal">
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDZKaZEMzkZ_LQWtssIH6ZDbex_FKqygvY8PlDZcsa9aMjnmMya625RXaV49MPEznczT1w7AU0ZcFofvamKsGyhMUZ3hF0NMaMvX4Wn5INkUsHTM5aaH-D0Q8vDANDzUY-kbDiMNMPFI0/s1600/P1000688.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDZKaZEMzkZ_LQWtssIH6ZDbex_FKqygvY8PlDZcsa9aMjnmMya625RXaV49MPEznczT1w7AU0ZcFofvamKsGyhMUZ3hF0NMaMvX4Wn5INkUsHTM5aaH-D0Q8vDANDzUY-kbDiMNMPFI0/s320/P1000688.JPG" width="240" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Beautiful curved corners</span></td></tr>
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</div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Windows:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Commercial double glazed aluminium windows and sliding doors. </span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Ceiling:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Painted
3mm Magnesium Oxide board, with R 3.5 fibreglass insulation between rafters,
with 50mm air gap to the 50mm blanket above.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Roof:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Zincalume<span style="mso-spacerun: yes;"> </span>with R1.5 foil backed blanket
insulation/sarking over battens.</span></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">4.2Kwh <span style="mso-spacerun: yes;"> </span>solar photovoltaic system on shed roof.</span><span style="color: red;"></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Heating:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Freestanding
European high efficiency slow combustion stove wood heater, with soapstone
surround as heat bank.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Cooling:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Fans,
natural ventilation and a reverse cycle air conditioning to be installed if
required.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Wall construction:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">Neil and
Sandy made the walls themselves, using their own 120L mortar mixer. Neil attended
a workshop with Hempcrete Australia and became a licensed installer. Neil periodically
holds hemp building workshops. </span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Formwork:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">18mm form
ply, strengthened with 35 x 75mm pine battens. Formwork attached to frame with
bugle batten screws. </span><br />
<br />
<span style="font-family: "helvetica" , "sans-serif";"><b>Section Diagram: </b></span></div>
<div class="MsoNormal">
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFFq2Lm3u38FV20UKk12xVW8m0Wh59lo_caVw5G4gzl2zklQsc4T0Qw43XUR1Vmakm7JZ2cl0FgaYR_OCO4WjesOQc0VGqRIKf8wXZyAet1ShjJJSqIfhCoRQBeIeKMh-DC8JJthQ3sbA/s1600/Violet+Town+Section.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFFq2Lm3u38FV20UKk12xVW8m0Wh59lo_caVw5G4gzl2zklQsc4T0Qw43XUR1Vmakm7JZ2cl0FgaYR_OCO4WjesOQc0VGqRIKf8wXZyAet1ShjJJSqIfhCoRQBeIeKMh-DC8JJthQ3sbA/s640/Violet+Town+Section.jpg" width="452" /></a></div>
</div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Technical issues:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">Do not render too soon! Allow the walls to
fully dry out before rendering, to avoid cracks in the render. If building
again Neil would not use as much Magnesium Oxide board, he would only use it in
the wet areas but not other walls</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Advice/Recommendations:</span></b></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<span style="font-family: "helvetica" , "sans-serif";">Talk
to other hemp builders. You can do the work yourself; building with hemp is
very satisfying, low skill and forgiving.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal" style="mso-outline-level: 1;">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "helvetica" , "sans-serif";">Contact:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">Phone 03
57981522</span></div>
<div class="MsoNormal">
<a href="mailto:nesan@internode.on.net"><span style="font-family: "helvetica" , "sans-serif";">nesan@internode.on.net</span></a><span style="font-family: "helvetica" , "sans-serif";"></span></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">Neil is
Secretary of the Industrial Hemp Association of Victoria</span></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">He is
happy to talk to and assist intending hemp builders</span></div>
Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com10tag:blogger.com,1999:blog-1287066791246557579.post-13280373857320454402015-07-17T02:19:00.000-07:002016-10-30T02:28:21.828-07:00Nelligen Hemp Studio<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQrgeYnkaoWqlClb6sywhcUcVjBrpcPRhiRz16j5E-Es8Fx9gI9eeJwKhDnFTrHmBt2K1Sxk8v3FgsUGlRwVpiK7NL0tBTFU8MDf-HTfQ8megp1otWykOqoIMIqhsY8V9rOej-E8i6BgU/s1600/03.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="356" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQrgeYnkaoWqlClb6sywhcUcVjBrpcPRhiRz16j5E-Es8Fx9gI9eeJwKhDnFTrHmBt2K1Sxk8v3FgsUGlRwVpiK7NL0tBTFU8MDf-HTfQ8megp1otWykOqoIMIqhsY8V9rOej-E8i6BgU/s640/03.jpg" width="640" /></a></td></tr>
<tr align="right"><td class="tr-caption"><span style="font-family: "arial" , "helvetica" , sans-serif;">Photo: Nicole Martin</span></td></tr>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Location:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Nelligen, NSW
South Coast</span></div>
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<br /></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Type of Build:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Two storey
studio on rural block.</span></div>
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<br /></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Owner:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Nicole Martin</span></div>
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<br /></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Designer:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Nicole Martin</span></div>
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<br /></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Builder:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Nicole
Martin, Owner Builder</span></div>
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<br /></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Size :</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">107m<sup>2 <span style="mso-spacerun: yes;"> </span></sup>total; 63m<sup>2</sup> downstairs and 54m<sup>2</sup>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Cost:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Est $200,000</span></div>
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<br /></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Date of construction:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";"><span style="mso-spacerun: yes;"> </span>April 2012 – est September 2015</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Purpose of Build:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">An artist’s
studio.<span style="mso-spacerun: yes;"> </span></span></div>
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<br /></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Choice of Material:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Nicole was
interested in natural building materials for environmental and health reasons.
She also wanted to build the studio herself and wanted the build to be low tech
and manageable for an owner builder. Nicole looked into building with straw
bales but was worried about vermin and that the width of the walls took up a
lot of the floor space. She also looked into building with cob but decided that
the material was too heavy to work with on the sloped location. Nicole found
hemp through research on natural building techniques, hemp ticked all the boxes.
It met the fire regulations, is resistant to termites, lightweight, environmentally
responsible, able to be self built and provided a healthy breathable building. </span></div>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiz9Cf5LSWUQJZ4NmH9WhHv2wP5M7UECcRlzmiOHnK9Oejeaga9UYIRtRunk_GIUNHM4byV96dpbLclXVlRfFqOgvTTRF6IpWSCtx3pmXGO-3hlcc8XZdkHC8j_88ahDL2Xskk9J3lFUFs/s1600/01.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="323" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiz9Cf5LSWUQJZ4NmH9WhHv2wP5M7UECcRlzmiOHnK9Oejeaga9UYIRtRunk_GIUNHM4byV96dpbLclXVlRfFqOgvTTRF6IpWSCtx3pmXGO-3hlcc8XZdkHC8j_88ahDL2Xskk9J3lFUFs/s400/01.jpg" width="400" /></a></td></tr>
<tr align="right"><td class="tr-caption"><span style="font-family: "arial" , "helvetica" , sans-serif;">Nearing completion Photo: Nicole Martin</span></td></tr>
</tbody></table>
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<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Climate:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Zone 6 – Mild
Temperate</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Local Council:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Eurobodalla
Council</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Obtaining Approval:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">No issue with
Council as the build used a regular frame, met the fire code and BASIX, which
were the issues that Council was concerned about. Nicole submitted the plans to
Council with information about the hemp wall fire resistance and insulation
value and no questions were asked about hemp.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Construction:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Nicole
carried out the build as owner builder. She worked with a builder on site for 8
weeks to put up the frame, recycled posts and beams,<span style="mso-spacerun: yes;"> </span>and the roof and rafters. A crane was brought
in to put the large recycled wharf timbers in place. Nicole carried out the
remainder of the build herself, except for the plumbing and electrical, with some
help from friends and family. </span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Footings:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">The concrete
slab is half on ground and half suspended. The suspended slab is supported on a
steel reinforced concrete filled concrete block wall on a concrete strip
footing on concrete piers.<span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Floor:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">The ground
floor is a concrete slab with ¼ strength black oxide.<span style="mso-spacerun: yes;"> </span>The upper storey floor uses recycled<span style="mso-spacerun: yes;"> </span>140mm Tasmanian Oak timber from a warehouse
in Victoria.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Frame:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Partly large
recycled Turpentine wharf timber posts and beams from the CSR factory in
Sydney, and partly standard timber frame made off site at Lawmans Frame and
Truss in Moruya. The upper floor joists are mixed hardwood from recycled
telegraph poles.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Walls:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">300mm hemp
walls using AHMC (Australian Hemp Masonry Company) binder, with part of the
east wall 500mm thick (due to a design change as this wall was originally going
to be faced in stone). The walls are finished internally and externally with
AHMC hemp lime render, applied in one coat about 10mm thick. No colour was
added to the render and it has taken on the colour of the sand. </span></div>
<div class="MsoNormal">
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhNwgjLNJIgRreWMuewuKaii6rgzDSUuehbAijXkcaQpUdQS5PqyBjqCX4r1l74UA0NTO-MIG1wGAZb-NkuFT9QRdLI3yMLtCbb3KIDvu9ha-CZykm7ViAcG_o_9VjDnOAUGG2nfjQrNhU/s1600/P1120053.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhNwgjLNJIgRreWMuewuKaii6rgzDSUuehbAijXkcaQpUdQS5PqyBjqCX4r1l74UA0NTO-MIG1wGAZb-NkuFT9QRdLI3yMLtCbb3KIDvu9ha-CZykm7ViAcG_o_9VjDnOAUGG2nfjQrNhU/s400/P1120053.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Under construction</span></td></tr>
</tbody></table>
</div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Windows:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Locally made
double glazed timber windows and glass doors. The windows have timber sills and
storm mouldings ontop attached to the exposed timber lintels. The side window
revels are rendered up to the window frame. Internal window reveals are
rendered. Fibre cement permanent formwork was installed around the windows and
doors. <span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Ceiling:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Upstairs
Gyprock; downstairs exposed bottom of upstairs recycled Turpentine floorboards.
</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Roof:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Corrugated
Colorbond roofing in Windspray, over foil backed blanket sarking/insulation,
with R3.5 sheep’s wool insulation between the rafters. <span style="mso-spacerun: yes;"> </span><span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Heating:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Nectre wood
heater. <span style="mso-spacerun: yes;"> </span><span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Cooling:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">The building
uses only natural ventilation with the openable skylights drawing heat out of
the house by convection.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Wall construction:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">The walls
construction was carried out by Nicole with help from friends and family, using
a 120L electric pan mixer hired from a friend. Nicole gained experience helping
a friend build their hemp walls. </span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Formwork:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Recycled OSB
(oriented strand board). The frame was placed inside the hemp walls but was
offset from the centre so that there would be deep window reveals on the
inside. The inside walls were 150mm from the frame and the longest bugle batten
screws were 150mm. To overcome this Nicole attached blocks of timber to the
frame to attach the formwork to. With different sized gaps the use of spacers
was awkward and Nicole abandoned them in favour of putting up the formwork
using a level to space the formwork. The benefit of this was that there were no
spacer holes to fill.</span><br />
</div>
<div class="MsoNormal">
<b><span style="font-family: "arial" , "helvetica" , sans-serif;">Section Diagram: </span></b><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc7gRkG8AqOVG5QNBqd-MnOKLH_8UWW6Rav6DPC29BzJVOanB4eEQA3kfBvAQ6MqqXkwTJ7lhZ7eTPgp31nPfGz3sKzUQkSpUFDAKRM__klSw9tHKiBrJhN0Zpqs1LL4StctLSxrcjmqY/s1600/Nelligen+Section.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc7gRkG8AqOVG5QNBqd-MnOKLH_8UWW6Rav6DPC29BzJVOanB4eEQA3kfBvAQ6MqqXkwTJ7lhZ7eTPgp31nPfGz3sKzUQkSpUFDAKRM__klSw9tHKiBrJhN0Zpqs1LL4StctLSxrcjmqY/s640/Nelligen+Section.jpg" width="452" /></a></div>
<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
</div>
</div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Technical issues:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">The offset
frame and depth of the wall created issues that were resolved as above. The
Gyprock ceiling was time consuming for a novice.The sheet bracing that was required because the building was located in a high wind area, was awkward to place hemp around and on the thin side caused the render to crack.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Advice/Recommendations:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Just do it.</span><br />
<span style="font-family: "arial" , "sans-serif";">Do not use sheet bracing, if need be find an engineer who can come up with a bracing solution that does not use sheet bracing.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Contact:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Nicole Martin</span></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">folkloreandco@outlook.com</span></div>
<div class="MsoNormal">
<br /></div>
Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com11tag:blogger.com,1999:blog-1287066791246557579.post-12778902367841749622015-07-16T22:31:00.000-07:002016-10-29T04:25:25.439-07:00Culburra Beach Hemp House<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9YMl3vb9X_e6sB1reKebAgtnusfgisUGmpugVrFc-Kr_gm9cpiCCCwpNMMg-Sfkw5X4OMy0VytG0aYUXUI7Xo-WlS0tYQzXWvUqFx5pcs23VCGr6Cn63ug3YHrydN1BBujt0hJgoIbVw/s1600/Low+res+Culburra+Hemp+House+1.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="426" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9YMl3vb9X_e6sB1reKebAgtnusfgisUGmpugVrFc-Kr_gm9cpiCCCwpNMMg-Sfkw5X4OMy0VytG0aYUXUI7Xo-WlS0tYQzXWvUqFx5pcs23VCGr6Cn63ug3YHrydN1BBujt0hJgoIbVw/s640/Low+res+Culburra+Hemp+House+1.jpg" width="640" /></a></td></tr>
<tr align="right"><td class="tr-caption"><span style="font-family: "arial" , "helvetica" , sans-serif;">Photo: Nathan Devine</span></td></tr>
</tbody></table>
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<br />
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Location:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Culburra
Beach, NSW South Coast</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Type of Build:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Single storey
detached residence.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Owner:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Kirstie<span style="mso-spacerun: yes;"> </span>Wulf and Ben Schueler</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Designer:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Kirstie Wulf,
Shelter Building Design</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Builder:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Owner builder</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Size :</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">123m<sup>2 <span style="mso-spacerun: yes;"> </span></sup>building, 55m<sup>2</sup> decks</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Cost:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">$210,000 </span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Date of construction:</span></b><span style="font-family: "arial" , "sans-serif";"> </span></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">April 2012 - January
2015</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Purpose of Build:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">To provide a
comfortable, natural, low energy holiday home with room for guests.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Choice of Material:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Kirstie was
looking into natural building materials suitable for construction by an owner
builder. She was investigating light earth (also known as light clay straw)
when she found an article in Owner Builder magazine on hemp and liked the
materials combination of insulation and thermal mass, the<span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Climate:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Zone 6 – Mild
Temperate</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Local Council:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Shoalhaven
Council</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Obtaining Approval:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Although
Shoalhaven Council had not come across hemp walls before the Council did not
have an issue with them, but was quite picky about the wording of the
Engineer’s report on the hemp walls and how it referred to the specific
sections of the BCA. This held up Council approval by a few months. Council
inspectors had no issue with the build during construction. </span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Construction:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">The build was
carried out by Kirstie and Ben as owner builders. The excavation, concrete
slab, frame and frame erection, roof and plumbing and electrical were
contracted out and Kirstie and Ben and generous friends constructed the walls
and the internals and fit out.<span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Footings:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Waffle Pod concrete
slab on ground. <span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Floor:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Polished
concrete slab. The slab had 3% onyx oxide added making it a very dark grey. The
top of the slab was lightly ground back to expose the mixed river stone in the
slab in a “salt and pepper” look. Ceramic tiles were used in the bathrooms and
laundry.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Frame:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Made off site
by Truss-T –Frames at Bellambi, near Wollongong. The frame was erected by local
builder, Rob Cheadle.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Walls:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">200mm hemp
masonry walls externally, constructed using AHMC binder, cast around a
centrally placed 90mm structural pine frame. 10mm of AHMC hemp/lime render
inside and out. Internal walls Magnesium oxide board finished with </span></div>
<div class="MsoNormal">
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8gT2KYIpWt7owMSnXUY31JtMljY7lCC_P3Db88oqUYAwEjsQipwuC2YNihpjkpjj_wtg5rrmlX526RapwCcCG-tUq_W-1Y3oa9c4eT0CbBRyx6G87qtexgU8tv31lVpU_ZNgGUt7l2Hs/s1600/P1100263.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8gT2KYIpWt7owMSnXUY31JtMljY7lCC_P3Db88oqUYAwEjsQipwuC2YNihpjkpjj_wtg5rrmlX526RapwCcCG-tUq_W-1Y3oa9c4eT0CbBRyx6G87qtexgU8tv31lVpU_ZNgGUt7l2Hs/s400/P1100263.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Under construction</span></td></tr>
</tbody></table>
</div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Windows:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Rylock
thermally improved aluminium double glazed sliding doors and windows. Temporary
formwork only used around windows and doors. External window reveals were
rendered and sealed to the window with colour matched Sikaflex. Internally the
Rylock windows came with an attached timber reveal. The revel was sized and the
windows placed so that the render finished flush with the timber window reveal,
avoiding the need for further trim and creating a minimalist look.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Ceiling:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Raked
ceilings using hoop pine plywood, left unfinished with a 9mm black shadowline
between sheets.<span style="mso-spacerun: yes;"> </span>Higgins sheep’s wool
insulation installed between rafters, R3.5 in kitchen/living/dining room and R3
in bedrooms and bathroom. Air cell R1.5 combined sarking, reflective foil and
insulation installed on top of rafters under roof sheeting.</span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5oSge0pE1tfLkXrkp55mwwQkCm4Uj2EjjX02QdOJm2Q9YnsLw5ROmWx2au4R_UUzDUvyGHlXY4uztisXok-zzh8uqaDaGbIEHRhmvmEeX1nAEqZy0RElMWGe7RNRQ1LMqvyN1fbBzJxY/s1600/Low+res+Culburra+Hemp+House+8.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="266" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5oSge0pE1tfLkXrkp55mwwQkCm4Uj2EjjX02QdOJm2Q9YnsLw5ROmWx2au4R_UUzDUvyGHlXY4uztisXok-zzh8uqaDaGbIEHRhmvmEeX1nAEqZy0RElMWGe7RNRQ1LMqvyN1fbBzJxY/s400/Low+res+Culburra+Hemp+House+8.jpg" width="400" /></a></td></tr>
<tr align="right"><td class="tr-caption"><span style="font-family: "arial" , "helvetica" , sans-serif;">Main living / dining / kitchen area Photo: Nathan Devine</span></td></tr>
</tbody></table>
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Roof:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Colorbond
custom orb (corrugated profile) in shale grey. </span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Heating:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";"><span style="mso-spacerun: yes;"> </span>A gas bayonette has been installed but due to
the house’s solar passive design and good insulation, to date the house has not
required any heating in winter.<span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Cooling:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Natural
ventilation only. Doors and windows were placed to catch summer afternoon sea
breezes and are left open on summer nights to cool down the thermal mass in the
concrete slab.</span></div>
<div class="MsoNormal">
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTWoyYGCa0Q7tOLSwKpvniqJMfPcdJVeUk4_LBMZJ9wTwI8lO_126Oq34hM_9nVk31DK03v7fxsJslCQsa8BiL0QFeJXtRNNtBqMag3XdfWqSHo9MEnyjiy1JEZsUSeAAoVKC_uUQWYpA/s1600/Low+res+Culburra+Hemp+House+13.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjTWoyYGCa0Q7tOLSwKpvniqJMfPcdJVeUk4_LBMZJ9wTwI8lO_126Oq34hM_9nVk31DK03v7fxsJslCQsa8BiL0QFeJXtRNNtBqMag3XdfWqSHo9MEnyjiy1JEZsUSeAAoVKC_uUQWYpA/s400/Low+res+Culburra+Hemp+House+13.jpg" width="266" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Mosaic shower</span></td></tr>
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<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Wall construction:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Kirstie
attended a hemp building workshop with Klara Maroszekky from the AHMC and a
workshop with Steve Allin (from Ireland) prior to commencing the build. The
workshops both focussed on the mixing and placing of the hemp material, but
lacked information on construction detailing to be used with hemp walls.<span style="mso-spacerun: yes;"> </span></span></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Formwork:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">OSB (oriented
strand board) recycled from large packing crates, was used as formwork. The
formwork was temporarily attached to the frame with coach bolts and spacers
made from rigid conduit. The spacer holes were filled with hemp mix after the
formwork was removed.</span></div>
<div class="MsoNormal">
<br />
<span style="font-family: "arial" , "helvetica" , sans-serif;"><b>Section Diagram:</b></span><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIjeiUDiYTFBiuRO1y25zgzqBNrjq1Xbp9Bvasn5qU7VIo9KhbMAgP5aY5vguToSSHqes0Vm4EbL-KkuMW_Q90rJnc8AQa-hpa7Ka6oT49dhLXnXsM4AQicGri5pLnEuf1mzB5-rMngkg/s1600/Culburra+Section+_+Layout.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIjeiUDiYTFBiuRO1y25zgzqBNrjq1Xbp9Bvasn5qU7VIo9KhbMAgP5aY5vguToSSHqes0Vm4EbL-KkuMW_Q90rJnc8AQa-hpa7Ka6oT49dhLXnXsM4AQicGri5pLnEuf1mzB5-rMngkg/s640/Culburra+Section+_+Layout.jpg" width="452" /></a></div>
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Technical issues:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Hemping up
under the rafters was awkward but not impossible. Challenges were also faced
with placing formwork and hemp in to small spaces, particularly in an area
between two roofs. The frame had been constructed without any direction to the
frame builders apart from the specification of 600mm centres for the studs. In
a number of locations the presence of triple studs, particularly next to doors,
meant that the hemp had nothing to key into and in some spots it pulled away
from the frame as it dried. This was resolved by placing crews with large
plastic washers through the wall into the frame pulling the hemp wall back to
the frame. Dealing with long and thick lintels over large windows also posed
some challenges, which with hindsight could have been avoided by using
permanent formwork, but such a decision needed to have been made prior to the
manufacture of the frame to allow for the extra thickness in the openings of the
permanent formwork. Difficulties were also experienced with the application of
the render, particularly on the MgO board.<span style="mso-spacerun: yes;">
</span></span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Advice/Recommendations:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">In the design
of the house the ease and ability to make the hemp walls needs to be taken into
consideration. Similarly the house frame needs to be designed to work with the
need for the hemp walls to key in around the frame. It is recommended to test
several renders and colours before committing to a particular render. </span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Contact:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Kirstie Wulf</span></div>
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<a href="mailto:shelter@outlook.com.au"><span style="font-family: "arial" , "sans-serif";">shelter@outlook.com.au</span></a><span style="font-family: "arial" , "sans-serif";"></span></div>
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<a href="http://www.shelterbuildingdesign.com.au/"><span style="font-family: "arial" , "sans-serif";">www.shelterbuildingdesign.com.au</span></a><span style="font-family: "arial" , "sans-serif";"></span></div>
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Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com3tag:blogger.com,1999:blog-1287066791246557579.post-82687369274797985842015-07-09T06:30:00.002-07:002016-10-29T04:25:46.711-07:00Kyneton Hemp Bed and Breakfast<div class="separator" style="clear: both; text-align: center;">
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9nUdb5lXq5EwZIPMr6ijqA1G5grKMSdBeGZSV3Lj57VOaV9bp5ohCE6fzbQvkU8LRNN3O0BPpwR95Rfdy485hik8EhfuUd7KAJRFgcYjmgDsP83wsazp4RmiRdf5QxfhxFYVo2_Rj5LQ/s1600/P1000631.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9nUdb5lXq5EwZIPMr6ijqA1G5grKMSdBeGZSV3Lj57VOaV9bp5ohCE6fzbQvkU8LRNN3O0BPpwR95Rfdy485hik8EhfuUd7KAJRFgcYjmgDsP83wsazp4RmiRdf5QxfhxFYVo2_Rj5LQ/s400/P1000631.JPG" width="300" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Rear view of studio</span></td></tr>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Location:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Kyneton,
Victoria</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Type of Build:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Two storey
studio in heritage listed area, attached to rear of existing building.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Owner:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Joe and Deb
D’Alo</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Designer:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Ian Murray,
Joe D’Alo and Deborah Varney</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Builder:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Joe D’Alo</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Size :</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">67.5m<sup>2 <span style="mso-spacerun: yes;"> </span></sup>total; 40.5m<sup>2</sup> downstairs and
27m<sup>2</sup> upstairs.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Cost:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">$165,000</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Date of construction:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">January 2012
to lock up stage in 4 months.<span style="mso-spacerun: yes;"> </span>As a July
2014, still not finished, will need a further 2 months to complete</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Purpose of Build:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">To provide
separate guest accommodation to be used as a Bed and Breakfast.<span style="mso-spacerun: yes;"> </span>A unique experience for guests to stay in a
hemp cottage.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Choice of Material:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Joe and Deb
had been following the development of hemp construction for about 15 years.
They have an interest in natural building and Joe had worked on both rammed
earth and strawbale buildings. He saw the flaws with each of these construction
types, such as the thickness of the walls for a strawbale building. Joe saw
hemp construction as addressing some of the disadvantages of these other
natural building methods, so with hemp also providing a combination of thermal
mass and insulation, the choice of hemp for his own build was obvious. Hemp is
an ideal building material for the climate in the region, as it has good
thermal insulation whilst still providing some thermal mass for energy storage.</span></div>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGaeFhP1YTS4XoO_BzdLX4z7JRygjDjIs2zBxjAdHUZx4o-BxNRVjbbvjJPyGe2UnLR1hnBl60H4cJxYH2kkna5RdvEHdjnxzcOMNWeZnsWe3273QAhGLsZOyXsehepC5d5qgS3wy7eyM/s1600/P1000610.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGaeFhP1YTS4XoO_BzdLX4z7JRygjDjIs2zBxjAdHUZx4o-BxNRVjbbvjJPyGe2UnLR1hnBl60H4cJxYH2kkna5RdvEHdjnxzcOMNWeZnsWe3273QAhGLsZOyXsehepC5d5qgS3wy7eyM/s400/P1000610.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Timber rain screen finish</span></td></tr>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Climate:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Zone 7 – Cool
Temperate</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Local Council:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Macedon
Ranges <span style="mso-spacerun: yes;"> </span>Council</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Obtaining Approval:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Council
approval was granted for this build in a heritage area. A private
certifier/building surveyor was used and there were no particular issues with
the hemp construction. </span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Construction:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">The whole
build was carried out by Joe D’Alo who is a licensed builder. A carpenter with
concrete formwork experience was employed. There was also a team for the
hemp-lime mixing, filling the formwork and tamping.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Footings:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Concrete slab
on ground. Concrete slab is a thickened edge raft slab with internal beams and
expanded polystyrene edge insulation.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Floor:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">The ground
floor is tiles over concrete slab.<span style="mso-spacerun: yes;"> </span>Upper
storey – Alpaca carpet in bedroom and tiled bathroom.<span style="mso-spacerun: yes;"> </span></span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Frame:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Joe made the
timber frame on site.</span></div>
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<span style="font-size: small;"><b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Walls:</span></b></span></div>
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<span style="font-family: "arial" , "sans-serif";">Joe made the
timber frame on site, using Australian Hemp Masonry Company (AHMC) binder, cast
around 90mm structural pine frame. Internal walls were finished with a first
coat of AHMC Binder and sand and a second coat of Plastalite lime/gypsum
plaster. External walls were clad with Spruce Thermowood, which was left to
naturally grey. For the external walls 25mm timber battens were fixed over the
10mm permanent magnesium oxide (MgO) boarding then clad with Spruce Thermowood
weatherboards.<span style="mso-spacerun: yes;"> </span>The 25mm gap between the
MgO board and cladding creates an insulating layer.</span></div>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCHDkmpzm1h3HJvziYHd4vNYbKTx1sMENM6bXmbnSmeuZJDUH4TLCOQOdk3NNgWipnS0ZaEQ1CLlnU2tkUENUEsyaLsrfwNEuSIu2tFlKd7Xxlskm7IlkASRZ192prO02klgUSHfKMBos/s1600/P1000628.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCHDkmpzm1h3HJvziYHd4vNYbKTx1sMENM6bXmbnSmeuZJDUH4TLCOQOdk3NNgWipnS0ZaEQ1CLlnU2tkUENUEsyaLsrfwNEuSIu2tFlKd7Xxlskm7IlkASRZ192prO02klgUSHfKMBos/s400/P1000628.JPG" width="300" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Inside ground floor</span></td></tr>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Windows:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Double hung,
double glazed timber windows. Permanent formwork was installed around the
windows and doors.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Ceiling:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">The exposed 20mm
Supaboard Magnesium Oxide board floor of the upper storey acts as the ceiling
to the ground floor.<span style="mso-spacerun: yes;"> </span>Upper storey
ceiling is 10mm Supaboard Magnesium Oxide board which was stopped and finished
in a similar fashion as standard gyprock plaster then painted with a breathable
paint. 250mm of “light hemp” (hemp wall material with less binder and no sand)
was cast over the Magnesium oxide board as ceiling insulation. </span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Roof:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Corrugated
galvanised metal sheet roofing is used.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Heating:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";"><span style="mso-spacerun: yes;"> </span>A wood heater is planned to be used in an old
fireplace, but Joe and Deb have found that the building stays warm in winter
without heating.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Cooling:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">The building uses
only natural ventilation. Joe and Deb found that on a 40<sup>o</sup> C day the
downstairs of the studio stayed a much more comfortable 25 – 26<sup>o </sup>C.</span></div>
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgVs36ZgcNG6mYdFC4kTPnn7gbKGkUMq837l-k4_Bkgh89995AFOPtPwE0odgoWvsNTkpbIwozwXuV712vsftuBjeAJt7FkNLdCl6iRm9S_6DKv_8Lia8MB4_ibmnBoJs2UeOY-WBWuOzU/s1600/P1000624.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgVs36ZgcNG6mYdFC4kTPnn7gbKGkUMq837l-k4_Bkgh89995AFOPtPwE0odgoWvsNTkpbIwozwXuV712vsftuBjeAJt7FkNLdCl6iRm9S_6DKv_8Lia8MB4_ibmnBoJs2UeOY-WBWuOzU/s400/P1000624.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Upstairs under construction</span></td></tr>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Wall construction:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Joe is a
licensed builder and carried out the wall construction himself, using a 360
litre diesel pan mixer hired from AHMC. Prior to construction Joe attended a
Hempcrete workshop in Maleney, Queensland, but found the course lacked detail
particularly when it came to how to specifically deal with window and door
openings.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Formwork:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Magnesium
oxide board was used as a permanent formwork on the external side of the wall. Formply
was used for the internal formwork and rather than being attached to the frame
it was braced against a timber stud on the floor so that there were no holes in
the hemp wall. </span><br />
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<span style="font-family: "arial" , "sans-serif";"><b>Section Diagram: </b></span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6zYN9UWDXODQhDfEGXXDCMPQtLYZsWbUOXY7t91cWDRQLKed9D_QQ5Mn8H_03sm4B7g2VUvF2SFM66cFBWn8ClR4GxkABPl_jH75KPjM9bBUfgRg2eaVoLtSCDPckMK_YtDN94Qez-kE/s1600/Kyneton+Detail+31.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6zYN9UWDXODQhDfEGXXDCMPQtLYZsWbUOXY7t91cWDRQLKed9D_QQ5Mn8H_03sm4B7g2VUvF2SFM66cFBWn8ClR4GxkABPl_jH75KPjM9bBUfgRg2eaVoLtSCDPckMK_YtDN94Qez-kE/s640/Kyneton+Detail+31.jpg" width="452" /></a></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Technical issues:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Hemping
between the exposed upper floor joists was difficult. The 35<sup>o </sup>ceiling
was fine to work with but the 47<sup>o</sup> ceiling was too steep and was
awkward to build. Joe recommends that those interested in hemp building need to
think about how to deal with window and door opening, in terms of lintels,
flashing and how the render is to join the timber (window or door) frames.</span></div>
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<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Advice/Recommendations:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Joe found
that using an external cladding and permanent formwork on one side of the hemp
wall made the walls quick and easy to go up, because you only have to raise the
formwork on one side, rather than both.<span style="mso-spacerun: yes;"> </span>Although
Formply was used as the formwork board, ply or OSB would have been quite
suitable and cheaper. The external cladding was also advantageous from the
point that the timber weatherboard cladding used maintained the look of the
other outbuildings.<span style="mso-spacerun: yes;"> </span>A rendered wall may
have looked out of place.</span></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">Joe recommends
runing electricals through conduit through the hemp walls. The mixing and
tamping of the hemp-lime material is initially fun and therapeutic, however things
can quickly change and the process can become a long and arduous task which
will test people’s spirit.<span style="mso-spacerun: yes;"> </span>A large,
trained team might cost more in direct labour but the benefit will be in
getting the hemp walls constructed quicker thus allowing them to dry (up to 6
weeks) before rendering.<span style="mso-spacerun: yes;"> </span>The timing may
be of particular importance if seasonal weather conditions are extreme.<span style="mso-spacerun: yes;"> </span>Hemp lime building shouldn’t be undertaken
when seasonal conditions are extreme, i.e., frost.</span></div>
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<br /></div>
<div class="MsoNormal">
<b style="mso-bidi-font-weight: normal;"><span style="font-family: "arial" , "sans-serif";">Contact:</span></b></div>
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<span style="font-family: "arial" , "sans-serif";">Joe D’Alo </span></div>
<div class="MsoNormal">
<span style="font-family: "arial" , "sans-serif";">joe.dalo@bigpond.com
</span></div>
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<br /></div>
Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com1tag:blogger.com,1999:blog-1287066791246557579.post-85841969272747880052015-06-25T04:55:00.000-07:002016-10-29T04:26:06.382-07:00Kensington Hemp Extension<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhaYVskmdhhICUkiWi7rBXQawLH-9k-_G0wlV-EgmR8607wnpb-V16yDd2_b_a-iFykh9ZoRuT3E2qSG6EL1n4gNX9LMbaKfoGe1R6bHLwQptgieF1TFAfLm4qGi20dHU-5gijNwHHeJUw/s1600/P1000460.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhaYVskmdhhICUkiWi7rBXQawLH-9k-_G0wlV-EgmR8607wnpb-V16yDd2_b_a-iFykh9ZoRuT3E2qSG6EL1n4gNX9LMbaKfoGe1R6bHLwQptgieF1TFAfLm4qGi20dHU-5gijNwHHeJUw/s400/P1000460.JPG" width="300" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Under construction</span></td></tr>
</tbody></table>
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<br />
<div class="MsoNormal">
<b><span style="font-family: "helvetica" , "sans-serif";">Location:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Kensington,
Melbourne, Victoria</span></div>
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<br /></div>
<div class="MsoNormal">
<b><span style="font-family: "helvetica" , "sans-serif";">Type of
Build:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Extension
and separate workshop</span></div>
<div class="MsoNormal">
<b><br /></b></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Owner:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Grant
Randle and Shelley Hosking</span></div>
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<b><br /></b></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Designer:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Barbara
Weimar Architect</span></div>
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<br /></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Builder:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Grant
Randle - Owner Builder</span></div>
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<br /></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Size:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">80 sq.
new;<span style="mso-spacerun: yes;"> </span>total 115 sq. including retrofit of
part of existing house; plus 15 sq. workshop/brewery</span></div>
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<br /></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Cost:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">$430,000
(est)</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Date of
construction:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Commenced:
September 2014</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Purpose
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<span style="font-family: "helvetica" , "sans-serif";">To
provide a new kitchen, dining and living room and a link, between the old weatherboard
home and the new extension, containing a music room. The design uses high
windows to bring northern light into the extension which is to the south of the
existing building.</span></div>
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<span style="font-family: "helvetica" , "sans-serif";">Grant and
Shelley wanted to use a zero carbon material in their extension and researched
several alternatives including using straw bale, but straw bale would have
meant thick walls, taking up valuable floor space on an inner city site. As
well as choosing to build with hemp for the walls and as the ceiling insulation
Grant and Shelley have chosen to use other low carbon, natural materials,
choosing timber frame and beams over steel. Grant and Shelley came across hemp
building while researching sustainable design on the internet. They chose hemp
for its thermal effusivity resulting from the unique combination of thermal
mass, thermal resistance and moisture absorption properties. They were also
attracted to the simplicity of the basic materials, the robustness compared
with strawbale and the possibility to self build with limited skills.</span><span style="color: red;"></span></div>
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<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_Uin6kuzE-v2-Q4Tcr7izwnjflPovr7soJeQKpGvP3m238eQRrBGGYnKViyqMLUe1IS5Nxis1ssFGVrbjZXGk4IEO1W3PURcSYvGcRGUQZNez2PYgJmdP3Tq1ZzXvoYMTm7fGR2cYNDM/s1600/P1000478.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_Uin6kuzE-v2-Q4Tcr7izwnjflPovr7soJeQKpGvP3m238eQRrBGGYnKViyqMLUe1IS5Nxis1ssFGVrbjZXGk4IEO1W3PURcSYvGcRGUQZNez2PYgJmdP3Tq1ZzXvoYMTm7fGR2cYNDM/s400/P1000478.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Inside under construction</span></td></tr>
</tbody></table>
<b><span style="font-family: "helvetica" , "sans-serif";">Climate:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Zone 6 -
Mild Temperate</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Local
Council:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Melbourne
City Council</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Obtaining
Approval:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">The
building application was initially lodged with a drawing note referencing HCA (Hempcrete
Australia) material “installed as per manufacturer’s recommendations”. It did
not explicitly mention the NCC approval. When the binder was changed to the
Australian Hemp Masonry Company (AHMC) binder, an engineers report was provided
to the private building surveyor. Melbourne City council had no issues with the
hemp walls during the planning approval stage and the building surveyor has had
no concerns to date.</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Construction:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">The
walls, insulation, MgO Board walls and kitchen installation are being carried
out by the owner. A builder was contracted to do the concrete slab, timber
frame and roof. </span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Footings:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Concrete
raft slab on ground with expanded clay aggregate balls (Clinka) underneath and
EPS (expanded polystyrene) around slab edge to achieve an R1.8 rating for the
entire slab.</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Floor:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Polished
concrete in living and dining room; Cork and linoleum in kitchen.</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Walls:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">300mm
hemp walls, using Australian Hemp Masonry Company (AHMC) binder, cast around
90mm pine frame. Render to be decided.</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Windows:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">European
Timber Windows, triple glazed in the highlights and double glazed elsewhere.</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Ceiling:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">10mm Magnesium
Oxide board on timber battens at 450mm centres, with hemp insulation 150mm
thick, using an AHMC ceiling mix of 5.5kg of hemp to 4.5kg lime, and no sand.</span><br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrsByyCAx3LvyJ89y68znHXx28V22fd6DMffS9dd7QuS_z71t9p5lase1ZhgErYFhzPAorsS2HW_gxdGLhUwBfkO8mOE0IRdaHo2J7mdwp0mR4CV5JDRg0vYlNm1mHP92y9LE-xIsaDFE/s1600/Kensington+Ceiling+blogger-image-1948438266.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrsByyCAx3LvyJ89y68znHXx28V22fd6DMffS9dd7QuS_z71t9p5lase1ZhgErYFhzPAorsS2HW_gxdGLhUwBfkO8mOE0IRdaHo2J7mdwp0mR4CV5JDRg0vYlNm1mHP92y9LE-xIsaDFE/s400/Kensington+Ceiling+blogger-image-1948438266.jpg" width="300" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Hemp/lime as ceiling insulation. Photo:Shelley Hosking</span></td></tr>
</tbody></table>
</div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Roof:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Corrugate
Zincalum with silver batts mounted under rafters to provide a thermal siphon
effect to limit thermal load from the attic. Pitched roof chosen to provide
solar panel mounting without an ugly frame, easier hemp placement at the top of
the wall and thermal barrier between roof and ceiling.</span><span style="color: red;"></span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Heating:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Wall
mounted hydronic heating.</span></div>
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<br /></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Cooling:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Passive
ventilation. Design includes high opening windows to assist with ventilation.</span></div>
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<b></b><br />
<b></b></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Wall
construction:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Grant and
Shelley, with family and helpers built the walls using a 120 litre pan mixer
purchased from through e-bay. Prior to commencing construction Grant and
Shelley had attended a 3 day hemp building workshop with Hempcrete. </span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Formwork:</span></b></div>
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<span style="font-family: "helvetica" , "sans-serif";">Geoplast plastic
formwork and OSB (oriented strand board) reinforced external with timber. The
6mm OSB is not stiff enough for formwork on its own. Grant and Shelley only
used the 6mm OSB as they inadvertently received it with the frame for bracing. The
sheet bracing was replaced with steel stra<a href="https://www.blogger.com/null" name="_GoBack"></a>p, and the
surplus used as formwork. They have also purchased some concreter’s form ply for
formwork. <span style="mso-spacerun: yes;"> </span></span></div>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPrH3_WcUBgHIkpTr-4WtVBrzRyz2bFtRzmC2lHqUkBIWhujv4989ZRN9mphp_Pd07l8shv_8IHQ9kpMZrfH-Lf3QyhRJW4cSUQKRHKOo69CJpOIAyn9Gakxh1ZHjWTTIjRpCpqpPMhuw/s1600/P1000461.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPrH3_WcUBgHIkpTr-4WtVBrzRyz2bFtRzmC2lHqUkBIWhujv4989ZRN9mphp_Pd07l8shv_8IHQ9kpMZrfH-Lf3QyhRJW4cSUQKRHKOo69CJpOIAyn9Gakxh1ZHjWTTIjRpCpqpPMhuw/s400/P1000461.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: "arial" , "helvetica" , sans-serif;">Geoplast and OSB formwork</span></td></tr>
</tbody></table>
</div>
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<span style="font-family: "helvetica" , "sans-serif";"><b>Section Diagram:</b></span><br />
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<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoGCpXoPJiBxw0tu4kVcuG2A_6aJq0G1LVa-5_jpVdOxOPClyPwnPRjWLiORqk2PZpZ-Iqht0WtkcNko0GJYp5tZfKdTNPCkCbN4Rmq-MBlQEYJL_otE1MgedvojbOaQwoyYyKNouptRU/s1600/Kensington+_+Layout+A4.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoGCpXoPJiBxw0tu4kVcuG2A_6aJq0G1LVa-5_jpVdOxOPClyPwnPRjWLiORqk2PZpZ-Iqht0WtkcNko0GJYp5tZfKdTNPCkCbN4Rmq-MBlQEYJL_otE1MgedvojbOaQwoyYyKNouptRU/s640/Kensington+_+Layout+A4.jpg" width="452" /></a></div>
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</div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Technical
issues:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">Grant and
Shelley found it difficult to get information on hemp building.</span></div>
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<br /></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Advice/Recommendations:</span></b></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">If using
plastic formwork design the house to fit the formwork. Try to avoid double and
triple studs in the timber frame by adding timber spacers between the studs.</span></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">For the big
lintels and beams where they only had 50mm cover, they used permanent formwork
of wood wool board from Knauf (Heradesign), rather than risk the hemp falling
off.</span></div>
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<span style="font-family: "helvetica" , "sans-serif";">For
window and door openings, Grant and Shelley suggest extending lintels 300mm
past the opening so that supporting double and triple studs can be fully
encased in hemp.</span></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">They also
suggest using timber bracing a they had in a workshop they attended..</span></div>
<div class="MsoNormal">
<span style="font-family: "helvetica" , "sans-serif";">For more
helpful tips see Grant and Shelley’s blog below.</span></div>
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<b><span style="font-family: "helvetica" , "sans-serif";">Contact:</span></b></div>
<span style="font-family: "helvetica" , "sans-serif";">Read more
about Grant and Shelley’s hemp build at hempcretehome.blogspot.com</span></div>
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Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com8tag:blogger.com,1999:blog-1287066791246557579.post-79565404095033010212015-03-21T02:18:00.000-07:002015-07-17T05:40:58.086-07:00Sharing Natural Building Information<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcKN-N9ipFw1vEoi-jauZOqolN1WDT_ZXLFbKF3TJJCoWC36VxZLEjmrG0wxpWDBye8v0xep7xTiUMu_-V1Pkhk0akHQZ4MlTJC6SiOE-IqhqMTkMI2Vfa-mhCIOZ5q2-hgsh8FjWXKIA/s1600/P1100018.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcKN-N9ipFw1vEoi-jauZOqolN1WDT_ZXLFbKF3TJJCoWC36VxZLEjmrG0wxpWDBye8v0xep7xTiUMu_-V1Pkhk0akHQZ4MlTJC6SiOE-IqhqMTkMI2Vfa-mhCIOZ5q2-hgsh8FjWXKIA/s400/P1100018.JPG" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: Arial,Helvetica,sans-serif;">Building with hemp</span></td></tr>
</tbody></table>
<br />
<br />
<br />
<br />
<span style="font-family: Arial,Helvetica,sans-serif;">Hemp building is relatively new in Australia as are many other natural building techniques such as light earth and earth bag construction. This project has therefore been set up to share the techniques and experiences of those building with hemp and other natural building products.</span><br />
<br />
<span style="font-family: Arial,Helvetica,sans-serif;"><br /></span>
<span style="font-family: Arial,Helvetica,sans-serif;">The purpose of this project is to focus on the use of hemp and other natural building materials, not as isolated components, but in the context of how they fit with the overall building and approval process.</span><br />
<span style="font-family: Arial,Helvetica,sans-serif;"><br /></span>
<span style="font-family: Arial,Helvetica,sans-serif;">A range of buildings will be reviewed with the same information provided about each building project. Some buildings reviewed as part of this project are still under construction an it is planned to revisit these buildings upon completion and provide further updates.</span><br />
<span style="font-family: Arial,Helvetica,sans-serif;"><br /></span>
<span style="font-family: Arial,Helvetica,sans-serif;">The review of each building will look at a range of issues including the type and size of buildings being constructed, the climate they are being built in, the method of construction used and how the walling method intersects with other building materials. For each build there will be a diagrammatic section through the building showing how the walls join to the roof, windows and footings. Issues such as Council approval will also be addressed. </span><br />
<span style="font-family: Arial,Helvetica,sans-serif;"><br /></span>
<span style="font-family: Arial,Helvetica,sans-serif;">The building materials used do not dictate the design of a building and this project will demonstrate the variety of building styles that hemp can take as well as the various different construction methods in which it can be used.</span><br />
<span style="font-family: Arial,Helvetica,sans-serif;"><br /></span>
<span style="font-family: Arial,Helvetica,sans-serif;">About the author:</span><br />
<span style="font-family: Arial,Helvetica,sans-serif;">Kirstie Wulf is a Building Designer and principal of Shelter Building Design. She holds a Diploma in Building Design, and a Cert IV in Architectural Technology, for which she won the State Medal. Kirstie has a strong interest in natural building and has constructed her own hemp house as owner builder, she has also worked on projects using mudbrick, cob, light earth and strawbale.</span><br />
<br />
Shelter Building Designhttp://www.blogger.com/profile/14175307600400481459noreply@blogger.com1