Thanks for answers. One more question, when PNA is located in concrete slab I should use as compresive force C=Fy*As or minimal force of this two: Fy*As and n*Qn? I asume that first one, but I want to be sure.
So in this example author assumed that beam will be partially composed, am I right? If I want fully composed then I use minimum of C or T, but then I need provide adequate amount of steel connectors on half of beam to get shear capacity bigger than T or C?
Hi, I'm tring to understand how to locate Plastic Neutral Axis in composite beam by Design Example v14.1 Example I.2. Why in choosing shear transfer C=ΣQn there is assumed 50% of minimal C or T? It can't be take into considiration minimal value of C=0.85*fc*Ac and T=AsFy? Thanks for any reply.
@Zondervan
I thought about this what is described in definition of Fnw like sandman21 said.
@dik
I've checked this plastification and the ratio is something about 40% so you are right it is stiff :) However welds will be the biggest issue. I used to design welds with directional method (von...
Thanks Dik for answer, but unfortunately I can't use W-flange profile here. But I am just interesting You suggest to make this to avoid concentrated force on flange or for other reason? Clear curiosity :)
Hi all,
I have question about connection like showed in attachment. I used to work with EC codes so for AISC I need support :) I have two HSS cantilevers attached to HSS 6x6x5/8 column and two HSS beams which are extension for cantilevers to create kind of overhanged beams. On cantilevers there...