I would appreciate comments and thoughts about how ASCE7 - (05/10/15) considers the old UBC near-fault(field) factors. I'm under the impression they are already built-in with the mapped MCE spectral response accelerations and/or the Site Coefficients Fa & Fv, since you can pinpoint exactly your project location. I have not been able to find any reference on the subject in ASCE7.
Do we need to disregard the 2/3Sms as Design Spectral acceleration parameters and use just Sms and Sm1 when in a near-fault area?
Again, I would appreciate any thought.
------------------------------
Ramses Sanchez Aff.M.ASCE
Principal
Descon, Srl
Santo Domingo, Dominican Republic
------------------------------