Precast/Prestressed Girder Help

Load Rating of Three Span Bridge (U.S. Units) T1A (LFD)

This tutorial is an extension of Tutorial 1. It illustrates the load rating of an interior beam (beam 2) in span 1 as per the Manual for Condition Evaluation of Bridges. It takes you through a step by step process of setting the parameters of rating and viewing the results. To load the starter file, click on File, select Open and in the Examples subdirectory select “Tutor1.csl”.

Problem Data

  • Type 3S2

  • Type 3-3

  • Type 3

  • HS20 Truck

  • 10 #10 Bars 2” from top: Start at 105’ End at 117’ (Measured from Left Pier CL)

  • 3 #10 Bars 2” from top: Start at 100’ End at 105’ (Measured from Left Pier CL)

  Start /End Spacing
2legs #3 bars from 0' to 4', spacing 3"
2legs #3 bars from 4' to 55', spacing 6"
2legs #3 bars from 55' to 65', spacing 12"
2legs #3 bars from 65' to 112', spacing 6"
2legs #3 bars from 112' to 116', spacing 3"
Start of Tutorial
Parent topic: Tutorials