Side walls (( C_p=-0.7 )): ( p = 31.33(0.85×(-0.70)) - 5.64 = -18.64 - 5.64 = -24.28 ) psf
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) ] C&C includes purlins, girts, fasteners, curtain walls, windows, and roofing panels. The design pressure is: wind load calculation as per asce 7-05
[ q_z = 0.00256 , K_z , K_zt , K_d , V^2 , I \quad \text(in psf, with V in mph) ] Side walls (( C_p=-0
At ( z = 30 ) ft: ( K_z = 0.98 )
Roof (( C_p=-0.9 ) for 0° slope): ( p = -23.94 - 5.64 = -29.58 ) psf (suction) ( K_z=0.90 )
For final design, always confirm which version of ASCE 7 is enforced by your local building code (e.g., IBC 2009 enforces ASCE 7-05; IBC 2012 enforces ASCE 7-10). When in doubt, consult the commentary of ASCE 7-05 — it provides essential background and design aids.