Wind Load/Lateral Analysis (ASCE 7-02)
Wind Load/Lateral Analysis (ASCE 7-02)
(OP)
For a structure that meets all the condition of Section 6.4 of ASCE 7-02, we use Method 1-"simplified procedure" for Lateral analysis:
Ps=adjustment factor*Importance factor* simplified wind pressure for exposure B.
What happens if the structure doesn't meet the condition, it meets the condition of Section 6.5, Method 2-"analytical procedure." Do I use the equation provided:
p=q(GCp-GCpi) for Lateral analysis? Is this equation for uplift? Do I use this both for Lateral analysis and uplift analysis?
Ps=adjustment factor*Importance factor* simplified wind pressure for exposure B.
What happens if the structure doesn't meet the condition, it meets the condition of Section 6.5, Method 2-"analytical procedure." Do I use the equation provided:
p=q(GCp-GCpi) for Lateral analysis? Is this equation for uplift? Do I use this both for Lateral analysis and uplift analysis?






RE: Wind Load/Lateral Analysis (ASCE 7-02)
Components and Cladding - For uplift analysis of the roof proper, use wind pressures given by eqns. (6-22) or (6-23,) as applicable.
RE: Wind Load/Lateral Analysis (ASCE 7-02)
RE: Wind Load/Lateral Analysis (ASCE 7-02)
C & C is for designing individual elements of the building envelop(local level) like walls, girts, the roof system etc. If you are checking uplift on the roof members, you would use C & C wind pressures.
RE: Wind Load/Lateral Analysis (ASCE 7-02)
A common thing I see in their lateral analysis is they use the equation:
Ps=adjustment factor*Importance factor* simplified wind pressure for exposure B (Eq 6-1)
for MWFRS even when it is in exposure C (They use this to compare it to V=CsW, to see which govern wind or seismic). Then they check roof, floor diaphragm, and shear wall using which ever govern.
And then for uplift they use the equation:
P=q(GCp-GCpi) where q=0.00256*Kz*Kzt*Kd*V^2*I
Is this right? Should they be using P=q(GCp-GCpi) for lateral analysis? I'm frustrated. I think they are using Method 1 for lateral analysis and Method 2 for Uplift.
RE: Wind Load/Lateral Analysis (ASCE 7-02)
A common thing I see in their lateral analysis is they use the equation:
Ps=adjustment factor*Importance factor* simplified wind pressure for exposure B (Eq 6-1)
for MWFRS even when it is in exposure C (They use this to compare it to V=CsW, to see which govern wind or seismic). Then they check roof, floor diaphragm, and shear wall using [the Ps or V].