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Old 12-15-2015, 07:08 AM   #221
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Sorry folks, Nat has been on time out and asked me to post this to answer the questions being asked here.

Ownins Corning rigid Styrofoam C-300 is what I will be using. It will not compress under the 14 gauge steel, or a 3\4 plywood subfloor under foot traffic. It is made to hold the pressures of cement being poured right over it. In shop application's with 6 inches of rebar reinforced cement, this gives over 3000 PSI of strength without deflection.


Sorry for the misunderstanding about the specs of the Rigid Styrofoam.


Nat
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Old 12-15-2015, 01:50 PM   #222
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I think I can explain it. "Pounds per square inch ... per square foot" doesn't exactly make sense, but I note that if one takes the 2000 and 3000 as pounds-per-square-foot figures, and divides by 144 to convert square feet to square inches, then one has 13.9 and 20.8 pounds per square inch, or PSI. Viewed this way, nat_ster's numbers are roughly consistent with those cited by jazty (ie they're in the same order of magnitude). I'll guess it was a case of typing too fast and writing "PSI" where "pounds" was meant.
Yeh, there's a dozen ways to write it: PSI, KPa, lbs per square foot, aardvarks per hectare, etc.. I just grabbed the weight rating (in PSI) from the technical documentation of the product.
http://www.foamular.com/assets/0/144...778c340101.pdf
^ That one is omitting c-200 and c-300 for some reason.. Maybe they are products only available in Canada.
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Old 12-18-2015, 11:14 PM   #223
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Yeh, there's a dozen ways to write it: ..., aardvarks per hectare ..
1 psi is 106,897 Standard aardvarks per hectare. Just FYI.
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Old 12-20-2015, 08:53 AM   #224
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1 psi is 106,897 Standard aardvarks per hectare. Just FYI.
106,896.75 for three legged aardvarks.
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Old 12-20-2015, 10:54 AM   #225
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Oops. I made a math error. It's actually 134,199 Standard aardvarks per hectare.
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Old 12-20-2015, 03:10 PM   #226
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Make sure you are calculating for Standard Aardvarks and not the lighter European Aardvark...
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Old 12-20-2015, 04:58 PM   #227
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What does that translate into Hedgehogs per square cubits?
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Old 12-20-2015, 08:13 PM   #228
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Not sure, that's kind of a prickly subject around here.
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Old 12-20-2015, 08:58 PM   #229
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Guys, lets stop polluting Nat's bus thread. :/
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Old 01-20-2016, 04:16 PM   #230
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These pics are from the fall of 2013.

I started planning the 23 inch roof raise.

I cut a four inch piece out of one of the ribs to take to the metal shop as a template. This insured that the new rib extensions will fit properly.



I had a metal shop make these out of 12 ga. Sheared, and bent to perfection on their massive bending brake. These pieces are my rib extensions to fill the 23 inch gap in the support ribs.







Showing how well they will fit.





Nat
Hi there.

First and foremost, CONGRATS on your baby !!! Mi youngest was born in December.

Secondly, AWESOME CONVERSION PROCESS !!! You are intimidating me !!

Third, my question ... because we are a family of 6, our bus is only 26 feet long from behing the drovers seat to the very back so, we obviously need to raise the roof in order to be able to add a loft for sleeping. I saw hiw you did yours and although it looks awefully intimidating, I think our newbie butt may be able to do it. However, we want to keep the bus windos so, do you think we could make the cut and the extention from under the windows as opposed to qhere the windows would go ?? I hope this is making sense ... or should we just not mess with cutting and raising and just add to the roof ?? We are soooo not skilful or knowlegable at all.

Thanks in advance for any advice you could.give us !!
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