For leeward wall (using ( q_h ) at roof height = 20 ft, ( K_z=0.90 ), ( q_h=15.9 ) psf): [ p = 15.9(0.85×(-0.5)) - 15.9(0.18) = -6.76 - 2.86 = -9.62 \text psf (suction) ]
While spreadsheets and dedicated software (MecaWind, WindLoadCalc) speed up the process, engineers must understand the procedure to: wind load calculation as per asce 7-05
These factors adjust the basic wind speed for height and specific site conditions: Velocity Pressure Exposure Coefficient ( cap K sub z Varies with height ( ) above ground and exposure category, found in Topographic Factor ( cap K sub z t end-sub For leeward wall (using ( q_h ) at