For the same building in problem 4, use ASCE 7 seismic design force requirements. Find: a. The formulas for base shear. b.The longest mapped maximum considered spectral response accelerations Ssand S1from seismic hazard maps. Cite reference. c.The maximum tabulated Site Class coefficients Fa and Fv. Cite references. Explain purpose of these coefficients. d.The maximum values of SMS, SM1, SDS, and SD1, based on previous values. e.Briefly describe the purpose of the R-factor. What value of R is used for a building with wood-frame bearing walls that are sheathed with wood structural panel sheathing