PGSuper  3.1
Precast-prestressed Girder Bridges
Legal

Define the load rating parameters for Legal level ratings

Live Loads

Item Description
Live Load Vehicles Select the live loads to be included in the load rating calculations for Routine Commercial Vehicles, Specialized Hauling Vehicles, and Emergency Vehicles. If no live loads are selected a load rating will not be performed.
Dynamic Load Allowances Input the truck and lane dynamic load allowance factors.
Exclude Lane Load and use 1.0 Truck Factor The lane load and 0.75 truck factor for the AASHTO Legal Loads are excluded when this box is checked. See MBE 6A.4.4.2.a for guidance.

Limit States

Enter the load factors for the Strength I and Service III limit states. Enter the keyword "Compute" if the live load factors are to be computed based on the requirements of the rating criteria.

Analysis Controls

Item Description
Rate for Service III Stresses Check the box if Service III stresses are to be included in the load rating.
Allowable Tension Enter the allowable tension stress coefficient
Rate for Shear Check the box if shear is to be included in the load rating.