Response Spectrum NCHRP Project 20-07

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

Ss and S1 from USGS by Lat/Long

Ss and S1 from USGS by postal code

Ss and S1 User specified

Site Class = A to F

 

 

Access the Response Spectrum NCHRP 20-07 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 NCHRP 20-07 in the Choose Function Type to Add drop-down list and click the Add New Function button.

    • Highlight a previously defined NCHRP 20-07 response spectrum function definition and click the Modify/Show Spectrum button.

Alternatively, click the Loads > Functions Type > Time History > New command and select NCHRP 20-07 from the resulting form.