The structure is a concrete pile supported pier with some heavy vertical and lateral loads on it. The pile bents will act as an unbraced frame. Some of the piles are quite long and will pick up some extra moment from p-delta effects. I understand that we would use unfactored (service) loads...
I am designing a slender column, and have a question about whether or not to include factored loads when doing a p-delta analysis (with Staad). I was told that it would be like factoring it twice, since the 'delta' would be from factored loads, and I should use unfactored loads to obtain...
