Question about Computer Modeling
Question about Computer Modeling
(OP)
I have a question about computer modeling. The extent to what I've used RISA, STAAD, and SAP is just modeling of an entire structure. I've always wondered though...can you design/check welds and bolted connections with these programs? How would I even do that? Or if I can do it, do I have to setup a seperate model for this?
Thanks
Thanks






RE: Question about Computer Modeling
By the way, are u modelling 3D structure in SAP or other programs. These progrmas do not assume compression flange as braced, which might give you huge member sizes. You have to specify the braces yourself. Anyhow it is another issue of modelling.
RE: Question about Computer Modeling
Thanks for the input. Did you say all programs don't assume a braced compression flange or SAP does and the others don't.
RE: Question about Computer Modeling
Actually i have the problem in my 3D Model that in addition to the fact i modelled steel deck it was not assuming beam top flange as braced. That is what we check the maximum moment capacity of the section, but the program ETABS (In fact SAP belongs to the same family) was giving capacity as the beam is restrained at end only. I contacted CSI and they inform me that only composite beams are assumed to be connected to top flangem, not simple steel deck (Even if we assumed puddle welding to top flange). The only way you can check is to laterally restrained at maximum unbraced lenght of the member by assigning member which acts as bracing, but it is a tedious process. And one more problem arises that some times these bracings have no force and the program gives an error message because it can't design those members. That is the experience i got. And CSI told me to fix it in new release. You might ask them for SAP too.
Hope this will help u.
RE: Question about Computer Modeling
RE: Question about Computer Modeling
Check the defaults of the program. RAM has defaults will allow you to say that the deck braces the beams and other such things.
RE: Question about Computer Modeling
RE: Question about Computer Modeling