Quote:
The AISC Standard defines a minimum pressure, not a minimum element load.

I don't think so, because 29.8 refers to "design wind force", even refers to 16 lb/ft2 (0.77 kN/m2) as pressure units. That's I still think that the unit force on member is max(qz*G*Cf; 0.77kPa)*Af

ASCE 7-10, 29.8 MINIMUM DESIGN WIND LOADING
The design wind force for other structures shall be not less than 16 lb/ft2 (0.77 kN/m2) multiplied by the area Af.