Hi - I'm designing a full height abutment and wingwalls on a shared footing supported on piles. LEAP has calculated an extremely large design moment and I can't quite back into the number. Can you explain how the software determines the maximum design…

I have a multi-span structure with 3 very similar piers with variable pier caps. In the ABC bridge wizard I defined a generic rectangular cap pier since it did not have the variable depth option in the wizard. I have now redefined one of the piers with…

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 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)

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…

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

My version of Leap Bridge Concrete currently allows for the use of STM in hammerhead pier caps, but we also need that option for all cap types in multi-column bents. We also need an STM option for prestressed and CIP concrete girders in Leap Bridge Concrete…

I have bent that is being constructed in two phases so some shrinkage will happen on the first phase before the next phase is constructed. In the final condition, I could assume the entire shrinkage strain is applied to both sections but that will be…

Hello, Currently, when trying to import girder reaction (bearing loads) specifically for Live load. The user needs to upload one Text file at the time. This is very time consuming and requires a lot of attention to avoid any mistake while selecting…

Hi, guys I recently ran into the issues as the text is too small in Leap Bridge Concrete Bridge as shown below. Does anyone have an idea to solve this problem? Thank,s

When opening from OBD Connect Edition, I accidentally double clicked on the Leap Bridge Concrete button, and it tried to open up 2 instances of the file. It generated an error, I don't remember which one, and now it won't open my file. I'm afraid I lost…

I completely designed a bridge using Open Bridge Designer. Started with the OBM file, sent it to LEAP Concrete, finished the design and saved the model. Went back to OBM and selected Utilities -> LEAP Bridge Concrete -> Read Reinforcement and got this…

Is it possible to import superstructure reactions from a LEAP Steel model into a LEAP Concrete Substructure Model? Steel Girder Design was started in LEAP Steel and concrete pier design was starte separately in LEAP Concrete. Thanks

Hi, There are cases where centrifugal forces produce a moment that actually counteracts the critical moment in the column, does RCPier consider effects due to vehicle cases without centrifugal forces as provisioned in AASHTO Spec (See below excerpt…

I am working on an Open Bridge Modeler model where I built a bridge and I needed to send the bridge to Leap Concrete Version 19.02.00.33, after the data transfer from OBM was successful, I had the Localization fail error message and the Leap crashed.…

When checking Show P-delta Effects in the Analysis tab, are the values shown represent values with p-delta effect? For example, are the column/shaft moments magnified with p-delta factor in these load combinations (with a "C" on the end of the LC#)? If…

I am designing a hammer head pier cap using LEAP Bridge Concrete's strut and tie option. I have input "main bars" and "stirrups" under the Cap tab. When I check the Design Status of the pier cap, I do not see where it checks the stirrup input against…

I am working on design of a CIP Post Tensioning Box Girder. Is there any example by Bently showing design/analysis of Post Tensioning CIP girder ?

I'm working on a two-span prestressed PCEF bulb tee bridge for a state DOT in LEAP Bridge Concrete v19. I'm new to LEAP Bridge Concrete, but I've used other LEAP products. We're at the TS&L stage, and I'm trying to get the preliminary design of the superstructure…

Has anyone seen this issue in lasted version of LEAP End user has new Lenovo P52 laptop and all drivers up to date. When rotating object you get a fan image around object as shown in screenshot. We have another user with same P52 laptop and drivers…

I am using Leap Bridge Concrete to design a skewed wall pier. After analyzing the pier, I noticed that for the braking force, that the sum of the forces in the z-direction at the top of the wall did not equal the sum of the forces in the z-direction at…

In Conbox, when we select the Self weight reaction in the analysis model, does it include the self weight of the piers defined as well?

How does LEAP Bridge Concrete calculate the reactions for DL-Comp. (DW)? I added up all the DW reactions and compared to a hand calc of utlities and overlay loads. The total DW is nearly 4 times greater than my hand calcs. I have 4 beam lines with 0.05…

In the Shear/Moment Envelope (&Reactions) Design output what is the difference between live load Max, Truck, and Lane? Is the max HL-93 including truck and lane loading? I have a 6 span continuous concrete superstructure.

When calculating the top and bottom stresses at the transfer and bearings, does LEAP take into account the development length? It seems that the stresses its calculating at the bearings and the transfer are higher than what they should be. Does LEAP use…