Purpose: Used to specify the load factor beta in LFD or LRFD projects.
--> Given in girder input. Also given in bracing input in Girder System Projects.
Used to override beta in AASHTO 3.22 (LFD) or AASHTO 3.4.1 (LRFD). Default value is 1.67 for LFD, 1.75 for LRFD.