12.3 DEFINITIONSIn addition to the definitions given in section 1.3 DEFINITIONS of the code, the following should be noted:Contents12.3.1 Mobile Supporting Structure (Mobile Gantry)12.3.2 Bracing12.3.3 Height12.3.4 Span12.3.5 Effective Length12.3.6 Width12.3.7 Duty Classification