ASCE 7-10 External Pressure Coeffient (GCp)

[amespinor]

I'm attempting to create a spreadsheet that tabulates design wind pressures for specific tributary areas.

Fig. 30.4-1 shows a graph of external pressure coefficient (GCp) vs effective wind areas (for Walls on enclosed/partially enclosed buildings with h<=60 ft). I notice this graph is logarithmic.

Is there any place I can find the logarithmic function pertaining to ASCE 7-10, for the GCp value so that I may implement it on my spreadsheet?

Thanks in advance!

 

[RFreund]

All of the Guide to Wind Load Provisions ...." books have them.

for example (I think you are lucky and can see these in the preview)

http://books.google.com/books?id=pR...AQ#v=onepage&q=wind load design guide&f=false

I thought there was another place as well, but I can't seem to find it...

EIT

http://www.HowToEngineer.com

 

[UcfSE]

You don't need the functions. Do a smei-log interpolation. That will give you the numbers for varying areas.