Purpose: Used to define longitudinal compression flange stiffeners on box girder.
--> Given in girder input
Flexural moment of inertia of each box girder compression flange stiffener about the base of the stiffener (in4 or mm4 ). Can be given as a list, or a single value for all segments. Must be given if stiffener is to be determined effective according to AASHTO Articles 10.39.4.3.1 (ASD), 10.51.5.4 (LFD) and 6.11.3.2.1 (LRFD). If XAS , XCS and XIS are specified, stiffeners contribute to section properties of the girder.