Calculating a project's Cp co-efficient with Seis Brace

John Deutsch walks you through using Seis Brace to calculate and lower a project's seismic Cp co-efficient.

[@GuillermoGuevaraM]

Hello, the analysis is very interesting, I have a question about it: If I have a building with total sprinkler protection and it has 3 underground and 10 upper levels; then I can calculate 2 values ​​of Cp, one for the underground that I would consider h=0 and for the upper floors I would consider, for example, h=100 feet. Would this also be valid, having 2 Cp values ​​for the same building?

[@GuillermoGuevaraM]

Hello John, a question, I have a building with a height of H=100 feet and sprinklers are only going to be placed in underground parking lots, therefore I consider height Z=0 feet. Having a Ss=1.5 and Hard Rock terrain, according to the program the Cp=0.252; but doing the calculation with the SEI/ASCE 7 formula, I obtain Cp=0.186. What is the reason for the difference? Thank you.