Purpose: Used to avoid considering a combination of truck and lane loading simultaneously existing in multiple lanes in determining live load envelopes in LFD or ASD Girder System Projects using direct lane loading. (Not applicable to Line Girder Projects.)
--> Given in girder system input
All lanes are loaded with truck loading, then separately all lanes are loaded with lane loading. In this way no governing effects will be determined by truck loading in one of the lanes and lane loading in another of the loaded lanes.
Lane Layout/Lateral Distribution in Parallel/Concentric Girder System Projects
Lane Layout/Lateral Distribution in General Girder System Projects