Hello, I've been having issues with Leap Bridge Concrete with the flexural capacity. It seems like the program doesn't think the bars are fully developed when checking the flexural capacity at the exterior girder location (see image below) Though…

Hi, I am trying to analyze a PILE BENT with Batter piles using LBC but when checking the Structural model of the bent. I noticed that the exterior piles (which should be battered) are still showing as straight in the structural model. Is this a limitation…

How does changing the values in A/D Parameters Cover section affect the analysis? How does this setting/section differ from the Bar distance input when doing a rebar design. Thank you

Hi there, I am checking column capacity in LEAP Bridge CE V20. The default load combinations I am using are correctly applying the overstress factor (See below screenshot #1), however, the overstress factor is not being applied to the column calculations…

I am using AASHTO LRFD and IDOT does not have conventional longitudinal reinforcing in their PPC IL-Beams, but IDOT does consider bonded prestressing strands as sufficient in resisting the temporary tensile forces in prestressed concrete before losses…

Hi If we define bar length, is leap bridge software have capability to deduct development length based on dia of bar and calculate flexure check at that point.

Hello, Just want to share an issue that I often come across while trying to open a file that I have previous ran the analysis and also saved. here is the file size file before running the analysis. size = 208KB after opening and running the analysis…

Why is the "Post-Tensioned" check box not visible in the Geometry tab as shown in Tutorial T5 Step 5. In LEAP Bridge Concrete, an adjacent box beam bridge was generated using the ABC interface.

Why does the station of the beginning and end of the bridge change from input to output? I input the beginning and end of the bridge at the abutments (stations automatically set to the stations I set the abutments at), but the bridge report output changes…

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…

On Leap Bridge Concrete for the curb to curb distance, do we input the distance along the centerline of the bent? For example if there's a variable width bridge where the back span width is different than the forward span width.

I would like to use a one-way workflow, to send only geometric data from OBM to LEAP Bridge Concrete for use in designing the Substructures. I can get the data from OBM to import into LEAP initially, but any geometric changes I make to the pier caps within…

I need to change the stress limits for the bent cap from normal exposure (=0.19 sqrt(fc) <0.6ksi ) to severe exposure (=0.0948 sqrt (fc)<0.3ksi)

Can anyone explain what the "Adjust cap ends for skew" check mark does in "Edit Bearing/Step" for Abutment design in LEAP Concrete Bridge?

Is it possible to design non-composite prestressed concrete I-girder bridge in LEAP Bridge Concrete? I did not specify shear connectors into the deck but the program is still calculation composite section properties.

I am designing a prestressed slab-beam bridge and the design output shows Mr/Mu ratio of 1.06, but the value is shown in red with asterisk next to it indicating the design is not acceptable (see screenshot below). I have not been able to figure out why…

When running analysis with and without P-delta I noticed there is a substantial increase in the axial column force when P-delta is applied. At the node 1 the difference is about 300 kips. What could be a reason for such an increase? Any insight is appreciated…

I am trying to extract footing design results and I noticed that it is getting struck/broken and closing out. When I uncheck design footing using P-delta effect it is producing results. I placed the LEAP file in the following link in addition to the screenshot…

I am analyzing a pier supporting 2 simple spans that are 45 degree skewed. 1. I am confused what offset needs to be entered in superstructure definition? 2. How is this offset playing a role in LL generation? I noticed that changing offset is changing…

When we try to copy the beam sections (BT-54) without changing any properties, the strands layout is disturbed and few of the rows are disappearing. Original Girder section strand arrangement Name Changed Girder Section strand arrangement Top…

Can we model open joint in pier cap using openbridge? If not, what would be the ideal solution to resolve this issue? See image below-

Is it possible to design post tensioned straddle bents in OpenBridgeDesigner/LeapConcrete? If so is there any tutorials on how to perform the design?

Hello there. In OpenBridge CE-Version 10.11,the following item is attached with the beam. However,after placing bearing，the beam item attached is missing. This problem will not happen in lower version software. Can it be fixed? Thanks.

Hi, I am working on the 80' prestressed concrete beam with a few debonded tendons. (Picture below) I am trying to see how moment capacity changes with the change of debonded length of the tendons. Below are the outputs for the provided moment…

Hi, Dear All, Please advise that how the "number of lanes loaded" is determined? In the "superstructure parameters", I entered 7 as "number of lanes". But here only up to 6 I can select. Thanks, Dong