Equation (16-37): SMs = FaSs = 1.195 x 0.762 = 0.910 g <br />Equation (16-38): SM1 = F,S1 = 1.600 x 0.400 = 0.641 g <br />Section 1613.3.4 - Design spectral response acceleration parameters <br />Equation (16-39): SDS = 2/3 SMS = 2/3 x 0.910 = 0.607 g <br />Equation (16-40): SD1 = Z/3 SM1 = 2/3 x 0.641 = 0.427 g <br />