I can't find any place in LBS that asks for ADTT. So my conclusion would be that it is always using Fatigue I. However my ADTT is low enough that I should be using Fatigue II according to AASHTO 6.10.10.2, but I don't see anywhere that would tell LBS…

Are the support reactions reported for Live Load factored or unfactored? Can total reactions be reported per load combination rather than per load case?

Hello, I am working with a colleague to load rate a bridge for state loads but he is not able to see the truck configurations I've input into my model. I have searched for the vehicle library file to send to him so that he may add to his program files…

Good morning, After completing my superstructure design, I used the substructure design/analysis tab to import all of my loads from the superstructure into the substructure. It pushes all the data into .rcp format. Then, I try to create vessel impact…

The PGL of the bridge is a straight line followed by a horizontal curve. The curve portion starts at the middle of a span. Bridge deck is tapered for the straight line portion and constant for the curve portion. I tried the three different ways (Independent…

How do you get Leap Steel to print influence lines for a specific point on the bridge?

How does Leap Bridge Steel treat diaphragm end connections for FEM models? My analysis results only yield axial loading and all of my shears and moments have a value of zero, suggesting pinned ends are used within the software. This is in contrast to…

Is there a way within LEAP Bridge Steel to report analysis results for load combinations (Strength I, Service II, DC only results, etc.)? I have found where results are broken up into their service components under analysis reports, but I can't find a…

Hi, Dear Sir/Ma'am, I am studying LEAP bridge steel now. I notice that in the tutorial that we can see the roadway in a 3D manner. However, I am not able to do it with the LEAP bridge steel V20. Could you please teach me how to view the roadway in a…

In LEAP Bridge Steel, when defining the Pier/Abutment Locations, what exactly is the user defining when they input a station for an Abutment aka Support 1. Is it the centerline of bearing for the girders ? Or is it the centerline of the abutment stem…

I am modeling a bridge in LBS that has a 2.625" bituminous wearing surface; however, I do not see an option to include this information in the model. When I define the vertical curve, the model places the crown of the deck right on the profile grade line…

I have created AASHTO LRFD Strength III and Strength V load cases and defined wind loads; however, I do not see where these loads are reflected the output for the lateral flange stresses? What exactly are the capabilities of LBS with regards to lateral…