bs6399 wind code advice - global coefficients
 

bs6399 wind code advice - global coefficients?
is there a global cpe (exteral wind perssure) for roof loading?
i'm determining wind loads on a 15 x 30m x 8m high shed with a 12 degree pitched roof. i've just waded through all the local pressure co-eff checks, fig 20 etc. is there a quicker way that i have missed to generate wind loads for concept design?

wind loads on structures 2002, published by sdg group. available through asce website. quikly generate wind loads per asce 7-98 or 7-02.