Response Spectrum IBC 2006 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 IBC2006 response spectrum function. Any positive, nonzero value can be input for these parameters.

SS = The 5% damped design spectral response acceleration at short periods as specified in IBC2006 Section 1613.5.1 (ASCE 7-05 11.4.1).
S1 = The 5% damped design spectral response acceleration at a one second period as specified in IBC2006 Section 1613.5.1 (ASCE 7-05 11.4.1).
TL = Long-Period transition period(s) as specified in ASCE 7-05 11.4.5.
Site Class = Site class A to F as specified in IBC2006 Section 1613.5.2 (ASCE 7-05 11.4.2).

The IBC2006 response spectrum function is based on the procedure described in IBC2006 Section 1613.2.1.4 (ASCE 7-05 11.4).

Access the Response Spectrum IBC 2006 Function Definition form as follows:

Click the Loads > Functions Type > Response Spectrum > Expand arrow command, or on the Bridge Wizard click the Response Spectrum Functions item and click the Define/Show Resp Spec Funcs. button, to display the Define Response Spectrum Functions form. Then do one of the following:

- Select IBC 2006 in the Choose Function Type to Add drop-down list and click the Add New Function button.
- Highlight a previously defined IBC 206 response spectrum function definition and click the Modify/Show Spectrum button.

Alternatively, click the Loads > Functions Type > Time History > New command and select IBC 2006 from the resulting form.