There seem to be two conflicting interpretations out there regarding minimum snow loads as defined in ASCE-7-98.
Pg = ground snow load
Pf = flat roof snow load = Pg*I*Ce*Ct
Ps = sloped roof snow load = Pf*Cs
The "minimum" Pf is defined in ASCE-7-98 as:
I*Pg when Pg is less...