Response Spectrum AS1170.4 - 2007 Function Definition Form

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

For the 2007 AS 1170.4 (Australia) response spectrum function, the following parameters are input. Any positive, nonzero value can be input for these parameters.

Ch(T) = Spectral shape factor for period T as determined by the pro-gram from Table 6.4 of the AS 1170.4.
kp = Return period factor as determined for AS 1170.4 clause 3.1.
Z = Hazard factor as determined for AS 1170.4 clause 3.2.
Site Class = Site class Ae to Ee as specified in AS 1170.4 clause 4.1.
Sp = Structural performance factor as given in AS 1170.4 clause 6.5.
μ = Structural ductility factor as given in AS 1170.4 clause 6.5.

The AS 1170.4:2007 response spectrum function is constructed as specified in AS 1170.4:2007 clause 7.2(a).

Access the Response Spectrum AS1170.4 - 2007 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 AS1170 2007 in the Choose Function Type to Add drop-down list and click the Add New Function button.
- Highlight a previously defined AS1170 2007 response spectrum function definition and click the Modify/Show Spectrum button.