Response Spectrum BOCA96 Function Definition Form

See Response Spectrum Code Function Definition Form for details about using the form. The parameters for this code are as follows:

The following parameters are input for the 1996 BOCA response spectrum function. Any positive, nonzero value can be input for these parameters.

Aa =   Seismic coefficient representing the effective peak acceleration as determined in 1996 BOCA Section 1610.1.3.

Av =   Seismic coefficient representing the effective peak velocity-related acceleration as determined in 1996 BOCA Section 1610.1.3.

R =    The response modification factor determined from 1996 BOCA Table 1610.3.3.

S =    The coefficient for the soil profile characteristics of the site as determined by 1996 BOCA Table 1610.3.1.

The 1996 BOCA response spectrum function is based on 1996 BOCA Section 1610.5.5. The response spectrum is constructed by plotting the modal seismic design coefficient, Csm, versus the modal period of vibration, Tm. For a given period, Tm, the value of Csm is determined using Equation 11-3.

 

Access the Response Spectrum BOCA96 Function Definition form as follows:

 

Click the Define menu > Functions > Response Spectrum command to display the Define Response Spectrum Functions form. Then do one of the following:

    • Select BOCA96 Spectrum in the Choose Function Type to Add drop-down list and click the Add New Function button.

    • Highlight a previously defined BOCA96 response spectrum function definition and click the Modify/Show Spectrum button.