Building Code Questions- Page 51 of 68
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Span tables for dead loads above 20 PSF.
Does anyone know where I can find span tables or equations to calculate dead loads in excess of 20 PSF? Every table I've found including IRC, AF & PA show…
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Moisture in sleeper bays over T&G roof decking?
8 years ago. The existing clerestory low slope roof had 2x sleepers over T&G decking with insulation between with sheathing and a membrane roof over. the new addition duplicated this…
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Plumbing vents exiting ridge cap
Can't seem to find anything in the code, easily missed though. I have a customer who wants a metal roof installed however they have had bad experiences with pipe flashings…
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Retrofit an existing exterior wall to 1-hour rating
I have a small garage conversion project that is within the side and rear yard setbacks and requires one-hour rated walls, eaves for approval. Any thoughts and solutions that balance…
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Rim joist thermal barrier
The rim joist in my unfinished basement is insulated with 3 inches of rigid polyiso along with one part spray foam to air seal around the edges. My understanding is…
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IRC 316.4 – Code interpretation on the use of rigid foam as air barrier on backside of attic knee wall
My insulation plans for my attic kneewalls were to install two layers of 2" eps with staggered and taped seams, then install damp sprayed cellulose in the 2x4 stud cavity,…
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Basement ceiling insulation required by code — but what about the basement door and stairwell?
Seems like a huge thermal hole in the basement ceiling. Code requires R30 in zones 4 plus for unconditioned basements. What about the bottom of the stairs (to 2nd floor)…
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Is it OK to use Tapcon anchors to fasten the wood plate to the concrete block?
I`m removing a non-functional 6FT. aluminum sliding door and replacing it with a 3ft. steel entry door. When we removed the old 6ft. door we found that the cement blocks…
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Expanded polystyrene and water-resistive barriers
I cannot tell whether the ICC-ES has approved expanded polystyrene for use as a water resistive barrier when installed over wood. I can only find that EPS has been approved…
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How do you calculate the net free area of an attic vent?
How does a manufacturer of vents determine the Net Free Vent Area of a vent that they put on the market?