We will correct the tutorial accordingly. If you agree with my comments, I suggest adding a separate truck type for fatigue in the above "Define Standard Vehicular Load" so that it will be easier to use.Īnswer: Thank you for you feedback. If we use the moving load results of other load cases for Fatigue load, we will end up with very big member sections to satisfy the fatigue check condition.
I don't think it is correct, because based on AASHTO, the moving truck used for Fatigue load case should have fixed distance between the two back wheels as 30'. I noticed that in this example, you treated the moving loads the same for the Fatigue and other load combinations. I downloaded the example of "Curved Steel Composite I-Girder Bridge Design" from your website to study to build my model. Question 3: Also I have a technical comment, please correct me if I'm wrong. Question 1: When I choose "HL93TRK" as shown in the following figure, will the program automatically adjust the distance between the two back wheels of the truck when performing the moving analysis?Īnswer: If the purpose is to define a vehicle for fatigue, there is a separate vehicle called HS20-FTG for which the distance is fixed as 30 feet. If you agree with my comments, I suggest adding a separate truck type for fatigue in the above "Define Standard Vehicular Load" so that it will be easier to use.
If I want to fix the distance between two wheels of the truck, how should I do? When I choose "HL93TRK" as shown in the following figure, will the program automatically adjust the distance between the two back wheels of the truck when performing the moving analysis?
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