Purpose: Used to specify section properties of bracing for preliminary analysis in Girder System Design Projects. (Not applicable to Line Girder Projects.)
--> Given in girder system input
Lists of St. Venant torsional stiffnesses (in4 or mm4) for bracing to be used if bracing has not been defined by types and shapes. For example, JB-1 is the list of J for the bracing between Girder 1 and Girder 2, proceeding from the left bearing of the Girder 1. Must be given for all braces if used at all (i.e. the list is not padded if only one value is given.) (Also see JBR)