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Wind Loading for a flat canopy attached to a building

Wind Loading for a flat canopy attached to a building

Wind Loading for a flat canopy attached to a building

(OP)
What is the most appropriate method in asce 7-05 in coming up with design pressures for a flat roof canopy attached to a building?

RE: Wind Loading for a flat canopy attached to a building

I used the lower roof provisions which bumps you back to the roof overhangs, but you use different zones (you use Cp for zone 2 in zone 3 and for zone 1 in zone 2).
I'll be interested to hear from others.

RE: Wind Loading for a flat canopy attached to a building

(OP)
what about if you use method 2?

RE: Wind Loading for a flat canopy attached to a building

that is the analytical method

RE: Wind Loading for a flat canopy attached to a building

This condition is discussed explicitly in the SEAW/ATC 60 Commentary on the wind load provisions (which is quite good - I would recommend it for anyone doing a lot of wind design):

http://www.iccsafe.org/dyn/prod/9079S03.html

RE: Wind Loading for a flat canopy attached to a building

I've always used the wall pressure at the height of the canopy. When a wind hits the windward wall of a building, it can go over or around. I assume the wind going over the building is acting as a perpendicular load on the bottom of the canopy.

Hope this helps.

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