Seismic Design of Structures Examples
Example 1 - Calculating seismic design force and base shear on a 6 story reinforced concrete building
Compute the design seismic force and seismic shear force for a structure given the following information:
Building Material - Reinforced Concrete
Nature of Building Occupancy - Adult education facility
Basic Seismic Force Resisting System - Special moment-resisting frame
Number of Stories - 6
Story Heights - 12 ft (all stories)
Story Weights - 1600 Kips
Seismic Risk - High
Soil Class - B
Mapped maximum considered earthquake spectral response accelerations at short periods, Ss - 1.5g
Mapped maximum considered earthquake spectral response accelerations for 1-second period, S1 - 0.6g
Also check the lateral deformation of the structure.
The elastic lateral deflection at each floor level under seismic lateral forces was obtained from a static elastic analysis based upon the calculated design seismic force and is also presented below.