Wind load for curved sign board

[msboobathi]

Dear Engineers
Please suggest me method or reference to calculate wind load for curved sign board attached to building as in attachment

Regards
M.S.B

 

[dik]

I'd treat it as a flat sign for the most part and add suction for the curved 'airfoil'. Maybe something like 24 in the attached. There may be other references.

Dik

 

[BridgeSmith]

There could be a small reduction due to the curvature, but it would be minor and very difficult to quantify. As Dik wrote, just consider it as flat (but use the actual surface area).