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Re: canopy wind loads
- To: seaint(--nospam--at)seaint.org
- Subject: Re: canopy wind loads
- From: Jnapd(--nospam--at)aol.com
- Date: Wed, 6 Feb 2008 21:06:02 EST
In a message dated 2/6/2008 3:04:00 PM Pacific Standard Time,
Any canopies, porte cocheres, etc. that are
directly attached to the main building are modeled as OVERHANGS for wind
pressure determination in our office. If the overhang is large enough, we do
look at reducing the uplift force at the portion of the structure that is
further away from the main building. This is due to the affect of lateral wind
hitting the wall surface and then going up the building until it hits the
ceiling/soffit of the overhang. The larger the overhang, we assume some
reduction because the wind pressure has open areas to alleviate the pressure.
It also depends on how open the overhang is, if there are any walls or any
other objects under the overhang to consider. Engineering
I agree with you on this Andrew....I don't see how others could
consider this an open structure you may consider it a hybrid open structure, as
you said engineering judgment.
Johnson & Nielsen Associates