Purpose: Used to define concrete weight.
--> Given in girder input. Also given in girder system input in Girder System Projects.
Unit weight of concrete (lbs/ft3 or N/m3). Default 150 lbs/ft3 or 23,563 N/m3 for ASD, LFD. Default is 145 lbs/ft3 or 22,778 N/m3 for LRFD.