SAP 2000 modelling problem
SAP 2000 modelling problem
(OP)
I am modelling 6 storied building , during analysis my sap2000
i found that above 5th floor i.e at roof level earthquake load in not involved in the analysis. only gravity load takes part in analysis. i have modeled building for many times, up to 5th floor is okay, above it, lateral load does not take part in analysis, neither it gives base shear. Only 5th floor of building contributes base shear. please help me to solve this problem.
Thanks.
i found that above 5th floor i.e at roof level earthquake load in not involved in the analysis. only gravity load takes part in analysis. i have modeled building for many times, up to 5th floor is okay, above it, lateral load does not take part in analysis, neither it gives base shear. Only 5th floor of building contributes base shear. please help me to solve this problem.
Thanks.





RE: SAP 2000 modelling problem
IR
RE: SAP 2000 modelling problem
Also check your roof loading should be included in mass source for seismic load.
IR
RE: SAP 2000 modelling problem
I have not used auto seismic case. I have calculated total seismic wt. of building, base shear and calculated the EQ loads and applied it as rigid floor diaphragm . How can i check for lateral load elevation range? Please find the attached file and help me.
Thanks.
RE: SAP 2000 modelling problem
IR
RE: SAP 2000 modelling problem
Pujan Neupane