Purpose: Used to define top flange width.
--> Given in girder input
Top flange width (inches or mm) for spliced segments of top flange. (Also see BSPL , SPLBFT , SPLBFW , TSPL , SPLTFT ) If open box girder, SPLTFW is the width of the flange on one of the webs. If closed box girder, SPLTFW is the entire width of the top flange.