HI
I'm not sure if its related to STAAD technically but I have a question regarding parameters required for Seismic Definition using ASCE
The parameter S1 and Ss ( Mapped acceleration parameters at 1.0s and 0.2s respectively) are said as per ASCE 7-10 Chapter 11.4.1 are to
be referred in Figures 22-1 to 22-6.
When I try to look at the figure it was indicated for S1 and Ss but the label for the figure has Site Class B on it.
The structure is not located on a site class B, does anybody know why the figures have a Site Class B on it?
Can I use the map to get values eventhough my structure is in Site Class D?
Thank in advance.