SRSS load combo in RAM Structure
SRSS load combo in RAM Structure
(OP)
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 Structural System. You will need to use load combinations to account for this code requirement."
My question is that how can we define SRSS load combo in RAM?
Thanks,
Z
"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 Structural System. You will need to use load combinations to account for this code requirement."
My question is that how can we define SRSS load combo in RAM?
Thanks,
Z





RE: SRSS load combo in RAM Structure
Both are merely just statistical combination methods that are roughly equivalent. Personally I prefer the SRSS method. But, I think the reason for the code no longer referencing the SRSS method is that some folks had been applying it incorrectly resulting in non-conservative designs.