Couple of people build Thermax HD hexayurts - figured they would last 10 or 15 years.
V> -- *Vinay Gupta * * [email protected] <[email protected]> * *http://re.silience.com* <http://re.silience.com> *Free Science and Engineering in the Global Public Interest* UK Cell : +44 (0)7500 895568 Twitter/Skype/Gtalk: hexayurt "In the midst of winter, I finally learned that there was in me an invincible summer" - Albert Camus On Sat, Feb 15, 2014 at 12:59 AM, hal muskat <[email protected]>wrote: > Have not seen samples. This would bring the cost of a 1" H12 up to $720+ > for panels. > > > On Feb 14, 2014, at 4:15 PM, Vinay Gupta (Hexayurt Shelter Project) wrote: > > Thank you for looking into this, Hal - for getting on the phone and doing > the research. > > Although more expensive, they will last a hell of a lot longer - have you > seen samples? I was *blown away* by Thermax HD. > > V> > > -- > *Vinay Gupta * * [email protected] <[email protected]> * > *http://re.silience.com* <http://re.silience.com/> > *Free Science and Engineering in the Global Public Interest* > UK Cell : +44 (0)7500 895568 Twitter/Skype/Gtalk: hexayurt > "In the midst of winter, I finally learned that there was > in me an invincible summer" - Albert Camus > > > On Fri, Feb 14, 2014 at 10:25 PM, hal muskat <[email protected]>wrote: > >> Just off the phone with RMax. Home Depot does not carry their line of >> fire retardant panels. They are available through their partner in >> Sacramento. >> >> That's the good news. >> >> The bad news is these panels are between 2 and 3 x's the cost. >> >> Phoenix >> >> >> >> >> On Feb 10, 2014, at 1:37 AM, Vinay Gupta (Hexayurt Shelter Project) wrote: >> >> >> So here's what we've heard, J: when you get a fire in a room insulated >> with polyiso, the reflective foil keeps the heat inside, bouncing back and >> forwards between the walls, and it gets *really* hot really quickly. Once >> it reaches the gasification point of the polyiso sheets (literally the >> boiling point of the polyiso boards!) they go up *hard*. >> >> I suspect in a full sized hexayurt that effect would take a while to >> build up and people have to walk a grand total of 10 feet to get out, so >> it's not likely a danger to life. But I worry that with a couple of >> thousand units deployed, eventually we're going to find this out the hard >> way. And as we see more and more large hexayurt complexes - are there >> adequate fire doors? Are tight-packed units all going to burn if one goes? >> >> I worry about these things. >> >> *All hexayurts should at least have a smoke alarm fitted. It's $10 and >> gives a real margin of safety. Could we try and get that standardized this >> year?* >> >> I think a pup hexayurt (remember woody's one sheet design) with a small >> camp fire inside would be a pretty good test at reasonable cost. The stuff >> certainly doesn't light easily, or I wouldn't have picked it, but law of >> large numbers is catching up with us. >> >> V> >> >> -- >> *Vinay Gupta * * [email protected] <[email protected]> * >> *http://re.silience.com* <http://re.silience.com/> >> *Free Science and Engineering in the Global Public Interest* >> UK Cell : +44 (0)7500 895568 Twitter/Skype/Gtalk: hexayurt >> "In the midst of winter, I finally learned that there was >> in me an invincible summer" - Albert Camus >> >> >> On Mon, Feb 10, 2014 at 3:53 AM, Julie Danger <[email protected]>wrote: >> >>> About this fire issue: I've read some craaaaaaazy sounding specs about >>> fires inside hexayurts possibly reaching a bazillion degrees. Can anyone >>> back this information up? And, I'm considering a sacrificial research burn >>> at illumination of a small hexayurt to test this theory-- possibly Monday >>> post burn, 9 pm, illumination village, bring a lawn chair and some booze. >>> >>> >>> >>> *This from "hexayurt safety information" >>> <http://www.appropedia.org/index.php?title=Hexayurt_Safety_Information&action=history>* >>> Important safety notice. Please do not build hexayurts out of any >>> flammable material. This goes double for foam! In the past, people have >>> built them from non-fire rated materials including polyisocyanurate >>> insulation (Tuff-R from Dow, often sold at Home Depot.) I do not regard >>> that as safe if the building is exposed to sources of ignition like open >>> flame, or mains electrical devices. Any non-fire rated substance should not >>> be used for camping, and is generally suitable only for demonstration >>> purposes. >>> >>> Although free-standing foam may not burn well, an enclosure made of foam >>> can burn catastrophically. The foam traps the heat, reflecting it back to >>> the fire and quickly igniting the entire building. According to this >>> article <http://static.monolithic.com/foam/fire_hazard/index.html>, >>> temperatures can reach 10,000 degrees and buildings have literally been >>> blown apart by the sheer force of the flames. Warehouse-sized buildings can >>> be fully engulfed in under five minutes. The article is about urethane >>> foam, but polyisocyanurate will probably behave similarly. >>> http://static.monolithic.com/foam/fire_hazard/index.html >>> >>> Here is some video of a sheet of R-MAX (which is very similar to Tuff-R) >>> being set on fire. As expected, it does not burn well in open air. However, >>> this should not give a false sense of security about foam-lined buildings. >>> Foam manufacturers used to think their foam was "self-extinguishing" - but >>> in an enclosed space, it is not. >>> >>> http://www.youtube.com/view_play_list?p=36DB80EAF1D4161B >>> >>> (shot by Arthur Zwern of http://progressivebuildingsolutions.com) >>> >>> In addition, bidirectional filament tape has turned out to be >>> *very*flammable, and burns hot enough to ignite Tuff-R type insulation. >>> This is a >>> "negative synergy" - the two materials together are more of a fire risk >>> than either alone, because the fast-burning tape can ignite the boards. We >>> highly recommend covering all exposed filament tape with foil tape, which >>> is a few dollars a roll at Home Depot and similar places. >>> >>> >>> http://groups.google.com/group/hexayurt/browse_thread/thread/99fbdd6cf9ddaca8has >>> pictures of the test conducted by Spiral which revealed this problem. >>> Thanks, Spiral! >>> >>> Estimation of fire risk for any given situation is a decision that only >>> the person building the hexayurt can make. I recommend you watch the video, >>> get a clear sense of what's going on, and make your own judgments. All we >>> do is make the information available, and you make the decision. Please, >>> put in the extra work and source the safest possible materials. This is >>> your responsibility. >>> >>> >>> >>> >>> On Wed, Feb 5, 2014 at 7:09 AM, <[email protected]> wrote: >>> >>>> Today's Topic Summary >>>> >>>> Group: http://groups.google.com/group/hexayurt/topics >>>> >>>> - Bulk purchasing Thermax HD or other fire-safe hexayurt materials[1 >>>> Update] >>>> - framed hexayurts [1 Update] >>>> >>>> Bulk purchasing Thermax HD or other fire-safe hexayurt >>>> materials<http://groups.google.com/group/hexayurt/t/f32ad9329f47d272> >>>> >>>> Lance Culp <[email protected]> Feb 05 12:30AM >>>> >>>> Date: Mon, 3 Feb 2014 23:34:13 -0800 >>>> Subject: Re: [hexayurt] Bulk purchasing Thermax HD or other >>>> fire-safe hexayurt materials >>>> From: [email protected] >>>> To: [email protected] >>>> >>>> Sound like a plan. Any ballpark idea of what the minimum order >>>> would be? >>>> On Feb 1, 2014 8:13 AM, "Richard Ginn" <[email protected]> >>>> wrote: >>>> >>>> Let's make a list of all the suppliers and what their minimum order >>>> is, and what price breaks we would get at what volumes of purchase. >>>> >>>> >>>> >>>> >>>> >>>> On Sat, Feb 1, 2014 at 9:06 AM, Vinay Gupta (Hexayurt Shelter >>>> Project) <[email protected]> wrote: >>>> >>>> >>>> >>>> >>>> They're tougher. >>>> They're not that much more expensive. >>>> They won't catch fire. >>>> I feel like this would be a great year to actually fix the supply >>>> chain issues around Thermax HD (or equivalents from other >>>> manufacturers), >>>> do a container load bulk purchase, and start moving people off R-MAX >>>> etc. >>>> until there's a comprehensive solution for the fire risk. I really want >>>> to >>>> solve this problem before somebody gets hurt. >>>> >>>> >>>> >>>> >>>> http://www.appropedia.org/Hexayurt_Safety_Information >>>> >>>> Vinay >>>> -- >>>> Vinay Gupta >>>> >>>> >>>> >>>> Free Science and Engineering in the Global Public Interest >>>> >>>> >>>> http://bit.ly/gupta_arc - the Gupta State Failure Management Archive >>>> http://bit.ly/gupta_ark - or see it directly on Archive.org >>>> >>>> >>>> >>>> >>>> >>>> http://hexayurt.com - free/open next generation human sheltering >>>> http://hexayurt.com/plan - the whole systems, big picture vision >>>> >>>> >>>> >>>> >>>> >>>> "In the midst of winter, I finally learned that there was in me an >>>> invincible summer" - Albert Camus >>>> >>>> Twitter/Skype/Gizmo/Gtalk/AIM: hexayurt >>>> UK Cell : +44 (0) 7500 895568 / USA VOIP (+1) 775-743-1851 >>>> >>>> >>>> >>>> >>>> >>>> >>>> -- >>>> >>>> You received this message because you are subscribed to the Google >>>> Groups "hexayurt" group. >>>> >>>> To unsubscribe from this group and stop receiving emails from it, >>>> send an email to [email protected]. >>>> >>>> To post to this group, send email to [email protected]. >>>> >>>> Visit this group at http://groups.google.com/group/hexayurt. >>>> >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> -- >>>> >>>> You received this message because you are subscribed to the Google >>>> Groups "hexayurt" group. >>>> >>>> To unsubscribe from this group and stop receiving emails from it, >>>> send an email to [email protected]. >>>> >>>> To post to this group, send email to [email protected]. >>>> >>>> Visit this group at http://groups.google.com/group/hexayurt. >>>> >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>>> >>>> >>>> >>>> >>>> >>>> -- >>>> >>>> You received this message because you are subscribed to the Google >>>> Groups "hexayurt" group. >>>> >>>> To unsubscribe from this group and stop receiving emails from it, >>>> send an email to [email protected]. >>>> >>>> To post to this group, send email to [email protected]. >>>> >>>> Visit this group at http://groups.google.com/group/hexayurt. >>>> >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>>> >>>> framed >>>> hexayurts<http://groups.google.com/group/hexayurt/t/2535008f8316a1af> >>>> >>>> dylan toymaker <[email protected]> Feb 04 09:09AM -0800 >>>> >>>> For anyone who wants to use stick framing techniques for hexayurts, >>>> i found a set of metal brackets to make it way easier. >>>> >>>> http://www.strongtie.com/products/DIY/GT2-GT6-GTF.html# >>>> >>>> scroll down to see the full system gallery. >>>> >>>> >>>> Dylan >>>> >>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "hexayurt" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at http://groups.google.com/group/hexayurt. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "hexayurt" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/hexayurt. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "hexayurt" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/hexayurt. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> 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