Accessing CyberShake Peak Acceleration Data

This page details how to access CyberShake peak acceleration data.

CyberShake peak acceleration data comes in two forms:

1. Geometric mean PSA (and X and Y component), at various periods.
2. RotD50 and RotD100 PSA, at various periods, starting with Study 15.4.

The databases contain this information for the most commonly used periods.

For geometric PSA, this is 10, 5, 3, and 2 sec, with 1 sec for 1 Hz CyberShake studies, and 0.5, 0.2, and 0.1 sec for stochastic studies.

For RotD, this is 10, 7.5, 5, 4, 3, and 2 sec, with 1 sec for 1 Hz CyberShake studies, and 0.5, 0.2, and 0.1 sec for stochastic studies.

Accessing database data

To access the database PSA information, details are provided here: Accessing CyberShake Database Data.

Accessing file-based data

To access periods which are not in the database, you must read the data in from files on disk.

Using the PSA retrieval script

To help in finding