RCTC R-Package

Rotated Combination of Two-Component Ground Motions

RCTC R-Package
Latest Release Date: January 2021

**Sponsored by the California Department of Transportation (Caltrans) and Pacific Gas and Electric Company (PG&E)**

RCTC is an R package referred to as Rotated Combination of Two-Component ground motions. It takes as input two horizontal components of ground motion, their azimuths, and their time step, and returns various types of variables, including pseudo spectral acceleration for each horizontal component, RotDxx for xx=0, 50, 100% as well as earlier, orientation-independent, geometric mean parameter GMRotI50. Other period-independent variables are also computed and outputted. The report attached documents code verification and provide instructions for its use.

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