one way slab supported on beams
one way slab supported on beams
(OP)
Does anyone know of software or spreadsheet that will calculate the design moments at the face of supports and at mid-span for a multi-span one-way slab?
I usually do this be coefficients (WL/11, WL/16, etc.) but occasionally need something more accurate. In the old days, I would do it by moment distribution, and take account of the haunched ends, and reduce moment to face of supports, but am now too old and tired to do this ...today there must be software around to do this.
I usually do this be coefficients (WL/11, WL/16, etc.) but occasionally need something more accurate. In the old days, I would do it by moment distribution, and take account of the haunched ends, and reduce moment to face of supports, but am now too old and tired to do this ...today there must be software around to do this.






RE: one way slab supported on beams
Years ago I wrote a DOS program that allowed multiple uniform and concentrated loads, alternating LL, column stiffness, etc. it was very fast (13 spans analyzed and designed in a few minutes. As archaic as DOS was it was way faster than any windows based software today.
If you find anything good, post it here. I'd be interested.
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RE: one way slab supported on beams
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: one way slab supported on beams
Mike McCann, PE, SE (WA)
RE: one way slab supported on beams
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: one way slab supported on beams
RE: one way slab supported on beams
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: one way slab supported on beams
BA
RE: one way slab supported on beams
If what you say Kootk about the extraneous input disappearing, then PCA slab design seems to be the way to go (except that I would have to buy it!). I never liked the direct design method and as far as I am aware our office has rarely if ever used it. Seems to be a method that was grandfathered in from the old erroneous empirical design method (with some changes that tried to address the major error of the old empirical design method, that it did not satisfy statics); also has restrictions on load and ratio of adjacent spans that sometimes preclude its use.
Thanks all for the info about PCA Slab, and all the thoughtful comments. Much appreciated.
RE: one way slab supported on beams
If all spans are identical and all beams are loaded equally, deflections will be the same; if spans are not identical, deflections will vary; if pattern loading is considered, even if spans are equal, loaded beams will deflect more than unloaded beams. In a storage building with large live loads, it could make a considerable difference.
BA
RE: one way slab supported on beams
RE: one way slab supported on beams
RE: one way slab supported on beams
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RE: one way slab supported on beams
RE: one way slab supported on beams
Hi RAPT. What is RAPT? Is it a program that will analyse slabs?
RE: one way slab supported on beams
RE: one way slab supported on beams
RE: one way slab supported on beams