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Wind load on open structure

Wind load on open structure

Wind load on open structure

(OP)
How do you handle the wind on an open structure such as a Gazebo or open porch attached to a residentail structure?
ANSI/ASCE only addresses open structure with monoslope roof.
Does anyone know of available reference material on the web??

RE: Wind load on open structure

ASCE 7-05 has updated much of the material on open structures compared to 7-02 and now includes components and cladding as well as main wind pressures.

RE: Wind load on open structure

The Guide to Wind Loads on Structures has an example of an open porch attached to a residence.  The primary structure (enclosed) is the basis for calculating the wind pressures on the porch in that reference.

RE: Wind load on open structure

mjl:

To which Guide are you referring?  Where is it?

RE: Wind load on open structure

(OP)
Thanks for the response

UcfSE
NC is still using th 02 version
mjl23 that doesn't seem right the enclose structure  is less than a partially closed structure and should be way less than a completly open structure

RE: Wind load on open structure

Depends what you are looking at I guess.  If the porch is attached to the enclosed structure and shares a common roof line, wind flowing over the house and then leeward over the porch doesn't know if the porch is enclosed or not.  On the windward side I think the porch would be similar to a roof overhang, so it gets positive pressures on the underside and negative pressures on the top side.  

But don't take my word for it, check for yourself: "Guide to the Use of the Wind Load Provisions of ASCE 7-02"

https://www.asce.org/bookstore/book.cfm?book=4082

I don't think it matters if you reference 7-05 instead of 7-02.  I think the basic principles in 7-05 are the same as 7-02, I think more tables for other structures were added, etc.

RE: Wind load on open structure

mjl:

Thanks for the link to that book.

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