Purpose: Used to calculate forces in horizontal truss bracing of box girders.
--> Given in girder input
The cross section area (in2 or mm2) of diagonals in horizontal truss bracing used to calculate forces in the diagonals. This parameter is not to be confused with AHTRUSS which is used solely for the amount of material that is contributed towards section properties of the box cross section. See page 62 in the 1993 Edition of the Guide Specifications for Horizontally Curved Highway Bridges. See also ASTRUSS , SCRATIO.