ASCE7-05 mean roof height
ASCE7-05 mean roof height
(OP)
Lets say you have a flat roof building with a parapet. Is the mean roof height, h, to the eave of the building, center of parapet, or top of parapet?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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ASCE7-05 mean roof height
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RE: ASCE7-05 mean roof height
RE: ASCE7-05 mean roof height
For roofs 10 degrees or less, it is the distance from the average finish grade elevation to the roof eave height. The definition on page 22 of ASCE7 does not refer to any parapets, but to me, it only makes sense to take the top of the parapet for the upper "h" value for the building. Technically, the eave height is where the sloping roof ends. As there is no real exposed eave when there is a parapet, assuming the wall continues past the roof to the top of the parapet, I conservatively interpret the top of the parapet as the "eave". If the parapet varies in height, I use the average top of parapet height in computing "h".
Just my way of doing it.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: ASCE7-05 mean roof height
This has been discussed before, with me and Mike offering the same (opposite) answers =)
thread507-224229: Per ASCE 7, what is the mean roof height of a BLDG?
RE: ASCE7-05 mean roof height
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: ASCE7-05 mean roof height