FAQ


1. Why we have a difference between Sigma RMS in Response spectrum and Stress and Damage report?

About the relationship between Stress DA and response spectrum, we have an article for this.

 

2. In the Response Spectrum Report it is written "RMS DA Stress", what does "DA" means?

DA refers to Double Amplitude.


3. Which Sigma RMS is used by SACS to calculate the damage?

The damage formula in the Fatigue manual is used for DA (double amplitude).