use ASCE 7-10

2.21 Given: ASCE 7 seismic design force requirements Find: a. The formulas for the base shear. Give section reference. b. The longest mapped maximum considered spectral response accel- erations S, and S, from seismic hazard maps. Cite reference. What is the physical significance of Sg and S? c. The maximum tabulated Site Class coefficients F, and F. Cite refer- ence. Explain the purpose of these coefficients. d. The maximum values of SMS, SMI, SDs, and Spi, 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?