A TPO roof is treated as a thermoplastic single-ply membrane under the roof code. What minimum slope is the contractor expected to maintain?
Correct Answer
B) 1/4 unit vertical in 12 units horizontal
IBC thermoplastic single-ply roof provisions use a 1/4:12 minimum slope. Other choices use too-flat or steep-slope roof-covering values.
Why This Is the Correct Answer
IBC thermoplastic single-ply roof provisions use a 1/4:12 minimum slope. Other choices use too-flat or steep-slope roof-covering values.
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