tag:blogger.com,1999:blog-5235419263414453422.post643728030898195118..comments2024-02-23T01:30:06.101-08:00Comments on Early Warning: Straw Bale Model HouseStuart Stanifordhttp://www.blogger.com/profile/07182839827506265860noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5235419263414453422.post-20043087459763280852010-09-04T16:00:45.352-07:002010-09-04T16:00:45.352-07:00Hi Stuart,
I appreciate your new accounting appro...Hi Stuart,<br /><br />I appreciate your new accounting approach; including embodied and sequestered energy; better than simply counting the carbon input.<br />However I found the location is essential to pinpoint. When we made our study ( http://permalot.org/files/u2/BBB1228Final.pdf ) it helped us greatly to know the location in regards to transport of materials, and significantly as we added the part which you -so far- seem to ignore; the 'end of life' cycle. As we knew how far it is to drive to the dump for toxic waste vs. normal landfill or compost (straw), it helped greatly in gaining more precise data.<br />-It was clearly best to use local milled wood boards, as opposed to imported OSB's from 1000 km's away.<br /><br />It also helped me to learn to distrust LCA's. [Life Cycle Analysis]. Fact is that we had to use data for lumber which were derived from studies of extremely large automated mills in Finland, though in reality our local lumber is made by 2 mobile bandsaw mills, which is all what our local saw mill consists of.<br /><br />Your accounting should also illustrate the fundamental mistake of the foundation; The basement. Building on piers saves an enormous amount of high embodied energy concrete+ eliminates flood and radon issues. To ensure floor insulation you simply add a layer of strawbales under the floor.<br />Building a good ol' stone (or earth-bag) root cellar in the garden provides the storage without the concrete. <br /><br />Keep it coming; looking forward to see the SIP home, however the real environmental comparison there is the end-of-life issue; SIP's are toxic waste, the straw is simply mulch or bio-mass fuel...<br /><br />Cheers,<br />Max Vittrup Jensen<br />PermaLot Centre of Natural Building, <br />Czech Republic - www.permalot.orgAnonymoushttps://www.blogger.com/profile/17931980373637540340noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-5798333530306687532010-09-03T07:52:21.040-07:002010-09-03T07:52:21.040-07:00Thanks on the typo - fixed. I added 2" of ri...Thanks on the typo - fixed. I added 2" of rigid insulation under the slab and outside the basement walls for future versions of the model (the versions in this post are unchanged). It adds about half a ton of embodied carbon emissions.Stuart Stanifordhttps://www.blogger.com/profile/07182839827506265860noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-80844244977758988022010-09-02T12:47:16.926-07:002010-09-02T12:47:16.926-07:00Are you including insulation under the slab & ...Are you including insulation under the slab & foundation to decouple thermally from the earth?<br /><br />SIPs = Structural Insulated Panels<br /><br />-JimAnonymousnoreply@blogger.com