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  • Users: Kin1234
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  1. Kin1234

    Deflections on Risa 3d and SAP2000

    Hi Guys, I am trying to size up a two-story, two-bay steel moment frame in SAP2000. Then I noticed the deflection of the moment frame in SAP2000 is 30% less than Risa 3D analysis. I check the properties of the materials, the shear and the moment reaction forces for the members of the moment...
  2. Kin1234

    Roof diaphragm ratio for non-structural penthouse

    I need to design a roof penthouse for a stair. The penthouse is small with 21 ft long and 3.75 wide. I think this penthouse can be designed as a non-structural component based on the CBC code. Do I still need meet the allowable diaphragm ratio 4:1? If so, what can I do to meet the diaphragm 4:1...

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