Thanks a lot AndrejLogunov and Geeky Biswa,
I could get the wind pressure according to my country code manually, and I have to apply it to the structures manually too after multiplying the proper (Ce) factors, but when it comes to apply it to the roof, which will be covered by photovoltaics panels, I can't decide to apply it into the inclined beams or the main beams??????
how about the columns too??