Purpose: Eliminates use of load modifiers in both the LFD (default) and LRFR forms of the LRFD rating equation.
--> Given in LRFD girder input
Equation (3.4.1-1) in the LRFD specification applies load modifiers for ductility, operational classification, and redundancy to factored load effects. Some interpret this as not applying to factored effects in the rating equation. The default is to include such factors in factored effects when calculating inventory and operating rating.