Purpose: Used to define permit truck loading in LFD or LRFD projects.
--> Given in girder system input in Girder System Projects. Given in girder input in Line Girder Projects.
A list of axle spacings (feet or meters) for user-defined permit truck for Strength II calculations. In girder system projects the permit truck occupies only the lane closest to the girder for which effects are being determined (also see PRMITP ).
[Note: For shorter span bridges you may need to reduce the permit truck to only the critical portion that falls within the total of the spans.]
[Note: to maximize reactions you may need to orient the truck so that the 2nd axle is more of a governing location than the 2nd-to-last axle would be.]
Truck Loading in Girder System Projects