General framing economy
General framing economy
(OP)
Having a discussion with colleagues about which is the more economical framing layout for 2-way framed bays with unequal spans; secondary framing (purlins/joists) spanning the long direction and primary framing (girders) spanning the shorter or secondary framing (purlins/joists) spanning the short direction and primary framing (girders) spanning the longer.
I know this is very general and in reality is influenced by a multitude of other factors but just in general for average sized varying bays in the 20 to 50 foot range, floors or roofs, and excluding labor costs, is one more economical than the other? Would your answer vary for different materails, steel, concrete or wood?
Any thoughts are appreciated.
I know this is very general and in reality is influenced by a multitude of other factors but just in general for average sized varying bays in the 20 to 50 foot range, floors or roofs, and excluding labor costs, is one more economical than the other? Would your answer vary for different materails, steel, concrete or wood?
Any thoughts are appreciated.






RE: General framing economy
Have you tried the parametric bay studies on AISC's website?
RE: General framing economy
RE: General framing economy
Having beams in the short direction and girders in the long direction will have you framing W10 or 12 beams into W24 girders, rather than W16 beams into W18 girders.
RE: General framing economy
RE: General framing economy