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Bentley help for repsonse spectrum specify following: "Experts have recommended using a SRSS combination of two orthogonal response spectra analyses to determine the critical forces in a dynamic analysis (see reference ****). This method is not implemented in the current version of RAM...

I have couple of questions related to Response spectrum, i will really appreciate everyone input. I have a building in which the lateral frame members are not parallel to global X and Y axes. Some engineer suggested me to run the response spectrum cases and input the angle which make the forces...

Is it possible to open two RAM files at the same time on the same machine? Thanks in advance. Zee

I have a floor on which diaphragms are separated by 5 ft vertically, If I define two separate rigid diaphragms then does the RAM considers them 2 different diaphragms so that when it will calculate the drifts, those will be for two different diaphragms? Any help is appreciated. Thanks.

Hi all Can anyone help me in order to find out the structural design criteria for a Data Center?? Thanks Zee

SAFE new version V12 is in the market and it has many interesting function, must check!!! Watch a wonderful presentation on CSI website www.csiberkeley.com

Does any body help for designing Chords and Collectors for Concrete rigid diaphragm from ETABS? I have tried to extract the forces from ETABS using SemiRigid diaphragm approach but the axial force diagram doesnt looklike good numbers. Any suggestion, any idea? Thanks.

Does any one know that How ETABS calculate the shear wall rigidity for distributing Lateral forces? which equations ETABS use for taking care of torsional effects? Thanks.

Hi Can any body tell me that what are Qualitative bending moment and Quantitative bending moment.