Built Up Section
Built Up Section
(OP)
I've been designing a built up section with a channel welded to the top of a wide flange shape to help take some lateral load. I was directed to use the ASD 9th to find allowable stresses and compare that to the elastic section modulus (I was happy to see the same procedure being used in this thread: thread507-181562: built up section - sction modulus). The question I have is, is this the best way to do this? I saw Table 1-19 in AISC 13th ed but I couldn't find any kind of design methodology behind it and I've been hard-pressed to find anything other than section properties in text books.






RE: Built Up Section
RE: Built Up Section
RE: Built Up Section
htt
you want "Crane Beam v1.1"
RE: Built Up Section
RE: Built Up Section
RE: Built Up Section
The crane builder can most likely provide pricing of plate box girders for you.
RE: Built Up Section
Crane beam v1.1 is a great tool.
I wish every A&E firm would use it when preparing dwgs for a project. All to often, The A&E firm calls out a crane runway beam 2 or 3 times the size that is needed. The problem is worst with WWTP facility designers. Thats our tax $$ being wasted.
Moreover, when we bid the job, we ask ourselves, should we bid the smaller beam that we know will work (and take the risk that the A&E will not accept our submitted size) or bid what is specified by the A&E (and lose the job to the guys how took the risk)
Best solution: Call out the runways beams to be sized and provided by crane builder - and have the beam provider submit calcs at submittal stage of project.