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STAAD Pro elevated slab design

STAAD Pro elevated slab design

STAAD Pro elevated slab design

(OP)
Please help!

I am designing a concrete framed building.  The foot print is approximatley 54' x52'.  The building is one story, has a concrete framing system with masonry-in-walls and a poured concrete roof.  

I modeled the roof using 1'x1' plates.  The beams are made of 1' sections, and the beam nodes are shared by the plates adjacent to the beams.  I assigned the appropriate thicknesses to the plates and the appropriate cross sections to the beams.  

I will not be using STAAD to do the concrete design, but I will only use the program to give me the correct design moments.  

When I look at the Global Moment distribution in the plates, I barely get any negative moment over my beams and the distribution looks questionible.  I ran a second plate model and instead of beams I placed pinned supports.  The differences in the moment distribution and max and min moments are HUGE.  

Which Model should I use for the slab design?  The beam/column moments and shears seem good.  Any suggesttions?

Thanks

RE: STAAD Pro elevated slab design

FIRST I WOULD LIKE TO KNOW WHAT VERSION OF STAAD YOU ARE USING....
IT WOULD BE VERY USEFUL TO ME IF YOU CAN EMAIL ME THE STD FILE TO TAKE A BETTER LOOK AT IT AND HAVE SOME SUGGESTIONS TO YOU
MY EMAIL IS
barrera@sinfo.net

Ernesto Barrera

RE: STAAD Pro elevated slab design

(OP)
The STAAD Version is 2001.

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