Purpose: Used to define bottom flange stiffeners on box girder.
--> Given in girder input
Thickness of projecting element (inches or mm) of flange stiffener. Can be given as a list or a single value for all segments. Required if 10.39.4.5.1 (ASD), 10.51.5.5 (LFD), or 6.11.3.2.1 (LRFD) is to be checked.