Hello all, I currently have a bridge with 3 spans in OBD. In span 1 and 3 I'm using concrete girders while in span 2 I'm using built up steel girders. I will be using LEAP Steel to design the steel girders and Leap concrete for concrete girders. My question…

I would like to analyze a steel stringer bridge that has a transverse nail laminated wood deck. Am I able to import this wood into the Material Library in any way?

I would like to use CSA S6:19 as the design spec for my steel bridge design in LEAP Bridge Steel. Am I able to do this? I would prefer to use SCA S6:19 over AASHTO spec.

Greetings, I have a user running LEAP Bridge Steel 22.0.4.34 as part of OpenBridge Designer 10.12.1.73. The project is stored in ProjectWise (PW). When she goes to open a OBDX file, she receives a PW file open dialog to choose a file. In LEAP Bridge Steel…

In LEAP Bridge Steel, the Live Load Report for Moments and Deflections gives displacements for Y and Z (no X). What are these directions? Do the match the global coordinate system, which seems to be Y = vertical and Z = transverse? I'm doing a finite…

I have a cross frame with a WT shape for the top strut. Based on the screenshot below, the program seems to be orienting the shape with the flange along the bottom instead of the top. Is this something that can be changed? Thanks

I am pretty new to using Leap Bridge Steel, and have a question regarding a project I am working on. I have attached a general framing plan, and was wondering if Leap Bridge Steel was capable of modeling it, mainly due to the partial length girders. The…

When including Ped Load in addition to HL-93, I'm getting same rating for inventory and operating. Local Buckling under strength is controlling the rating, but it is giving the same rating result for inventory and operating rating even though the live…

Good morning, I'm working on a 2 span twin tub girders structure, and it works well when running Analysis for Design. But after I save the file with a different name, change mode to rating and try to run Analysis for Rating, It crashes showing the following…

The bridge I am working on has 4 splice locations at each member. For some reason, after running an analysis, the first and last field splice do not appear to be updated and the program is still prompting me to run an analysis at those locations before…

I am using LEAP Bridge Steel through OpenBridge Designer CE 2022 Release 1. The LEAP Bridge Steel version is 22.00.02.19. When running the design check for cross-frames I am noticing that the compression check is incorrectly calculating the elastic…

We are currently modeling a tall steel plate girder, about 104". We have lateral bracing in the exterior bays for wind load during construction. When we look at the cross-frame forces in the analysis function, the maximum load in our lateral bracing for…

In Leap Bridge Steel, I have a curved bridge, so the girder lengths are not integer values. Under the Member Definition tab I'm unable to manually input flange plate lengths to a sufficient decimal in order to be able to run analysis (see below for the…

Has anyone else had this issue? I can run an analysis and nothing gets flagged in the "Under Design Report", but after looking at the Strength V Limit State reports there are failing members in Shear. Also I have attached an example picture of what the…

Hi, In the article below it mentions that the issue where "Distance from top of concrete deck to the neutral axis of the composite section at the plastic moment was incorrectly calculated." is fixed. However, I'm still running into this problem when…

Hello, I am attempting to verify the flange lateral stresses that I am seeing in my model (I have the analysis toggle for "Compute flange lateral bending per NCHRP 725" selected). Per LEAP Bridge Steel Help, "The cross frame end moments are used…

Hello, I am following the "Deck Overhang Loads" help page to input my deck overhang and construction loads into the "Deck Placement Sequence" window. I am then double checking that my loads are creating the correct lateral moments using the…

Hello, When I first open the Substructure Module there is a CE load that is imported from LBS. This load only has a couple force in the Y direction acting at the exterior bearings. However, when the Auto Generation tool is used, lateral forces…

I am using a floating lane layout on a simple span 5 steel girder bridge. Once I run the analysis I want to verify that all Roadways are being considered. I am using the "Lane Load Details" window to check this. However, when selecting the "Mz…

LEAP Bridge Steel Non-Composite Action

Hello. I am using LEAP bridge steel to compare results from a CSiBridge refined model. The model is a 2 span bridge with fixed supports at the ends to obtain the max negative live load at the abutments. All the moments and shears have correlated pretty…

I am trying to define a composite section in my bridge. Thus, I am using the generic shear connector type. When I click the Add button, the following message pops out: "Encountered an improper argument". Anyone know why? Is this something I should…

Hello, A client is requesting I test a bridge with the following parameters: Only permit vehicle on the bridge No lane load No adjacent lanes loaded Is it possible to model a LL like that in LEAP Steel? When I define the LL, I choose my…

I need some advice. Situation I have a flared steel bridge. the bridge is continuous. i am using leap steel bridge. there are 6 girders. basically girder spacing at abutment 1 is 14 ft +/- and pier 2 is 13 ft +/-. (Flare portion). From Pier 2…

Hello, In LBS I have a preliminary girder design that meets code checks, no flags in "Summary - Under Design" report. I decided to try the Design Optimization tool in Member Definition to see if there were any suggestions I would like to incorporate…