Wind Load Inside The Building
Wind Load Inside The Building
(OP)
What wind loads do you use inside a building?
For a typical office building, I will use 5 PSF lateral load.
In a repair garage for large trucks or buses or any facility with multiple OH doors I feel I should increase the lateral to 7 or even 10 PSF.
Any thoughts?
Thank you!
For a typical office building, I will use 5 PSF lateral load.
In a repair garage for large trucks or buses or any facility with multiple OH doors I feel I should increase the lateral to 7 or even 10 PSF.
Any thoughts?
Thank you!






RE: Wind Load Inside The Building
"It is imperative Cunth doesn't get his hands on those codes."
RE: Wind Load Inside The Building
RE: Wind Load Inside The Building
Other than through the analytical procedure, I don't recall seeing any reference to internal wind forces in ASCE-7.
RE: Wind Load Inside The Building
5 psf is the code-mandated minimum working pressure.
You have first classify your building as open, closed, or partial, right? I very much doubt that you have an open or even partially open building - it takes a lot of wall area to be missing in order to have either partial or open. If you have a partially open or closed building, you end up with two pressure coefficients (internal GCpi and external GCp). Internal is for just that - surfaces internal to the building shell.
Partially-enclosed buildings have higher internal pressure coefficients - so, if you want to be conservative for interior pressures, GCpi for partial is the way to go.
"It is imperative Cunth doesn't get his hands on those codes."
RE: Wind Load Inside The Building
"It is imperative Cunth doesn't get his hands on those codes."
RE: Wind Load Inside The Building
RE: Wind Load Inside The Building
"It is imperative Cunth doesn't get his hands on those codes."
RE: Wind Load Inside The Building
I don't recall where I found the recommendation for 7 psf or even 10 psf. I don't think it was in this forum, rather through internet research.
But, considering some of the concepts of [recookpe]'s post, when I consider a building that has multiple O.H. doors on opposing parallel sides of a metal building, for one, how can we NOT consider this an open building or partially enclosed? With such a building and so many openings and repetitive, obstacle door jambs, I consider the wind creating some increased conditions on the inside of that building.
Wind is not one of my forte's, so, please bear with me as I am still learning. My supervisor and I are still not convinced (fully) that our adoption of IBC back in 2002 was of absolute necessity for the scope of low-rise buildings we typically deal with. But, we certainly do conform when and wherever necessary. We do believe in safety.
RE: Wind Load Inside The Building
Building, Enclosed. A building that does not comply with the requirements for open or partially enclosed building.
Building, Open. A building having each wall at least 80% open.
Building, Partially Enclosed. A building that complies with both of the following conditions:
1. the total area of openings in a wall that receives positive external pressure exceeds the sum of the areas of openings in the balance of the building envelope (walls and roof) by more than 10%, and
2. the total area of openings in a wall that receives positive external pressure exceeds 4 ft2 (0.37 m2) or 1% of the area of that wall, whichever is smaller, and the percentage of openings in the balance of the building envelope does not exceed 20%.
"It is imperative Cunth doesn't get his hands on those codes."