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] 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] 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" >> 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, >> 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/99fbdd6cf9ddaca8 >> has 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 >> 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 >> 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. > > > -- > 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. 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