Purpose: Used for determining lateral bending stress from wind loading.
--> Given in LRFD girder input (.Gi, .Ri)
Expressions (C4.6.2.7.1-2) and (C4.6.2.7.1-3) in LRFD article 4.6.2.7 describe two unbraced lengths that can be used to determine lateral bending stresses from wind loading. The default is to use the governing of these two expressions. However, this condition can be used to ignore (C4.6.2.7.1-3) if it is judged that construction bracing is adequate to prevent lateral movement of the entire span.
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