Browse By Tags

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…

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…

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…

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…

I am performing a load rating of concrete box girders. The rating factors/tons is not displayed since the Inventory Design Load Rating Factor > 1. Is there an option to make the program display the factors even if the RF is greater than 1 or is that information…

I am seeing different minimum moments in my pier cap when comparing the cap design output and moment diagram to the actual analysis output. The cap design and moment diagram are both reporting a maximum negative moment of -3599 k-ft, but the analysis…

I am working on the Bentley tutorials but I am confuse on how all of the Open Bridge Desiner connects to Open Bridge Modeler and Leap. do we need to start from OpenBridgeDesigner to have the Modeler and Leap work together. When I create in OpenBridge…

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…

Hi All, I'm calculating the screed elevations, top of haunch elevations, and final deck surface elevations. I had the following questions: Is there a way to get OpenBridge Modeler or LEAP Bridge Steel to provide these elevations? Or is the best…

I don’t know when I use “include beam and slab contribution in Vu” and “Exclude Beam and Slab contribution form Vu” why are V vh-rg values zero?

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…

Is there a way to add a supplemental composite DW load for a poly wearing surface in Leap Concrete Bridge? I want to keep it separate from the Future Wearing Surface (Composite DW) load I already have. This is necessary to accurately calculate camber…

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…

Hello, I was wondering what edition of AASHTO is LEAP Bridge Concrete v16.00.00.24 using? I was unable to find it in the software itself so if it's possible to describe to me how I can find this within the program as well I would appreciate it. Thanks…

I am designing a 2-span precast prestressed beam bridge in LEAP Bridge Concrete CONNECT Edition v17.00.01.01. The bearing dimensions along the pier cap are shown correctly in the following view under the 'Substructure' tab: However, when you click…

Can LEAP RC-Pier analyze/design for a cantilever abutment? I used RC-Pier for Abutment Cap with Pile Design before, but not sure if it works with cantilever abutment design. Thanks Alex

Does anyone have calculation verification for the live load auto-generation function in RC-PIER? Or has anyone else had problems verifying the LL output from RC-PIER?

I have a single span bridge using I-girders that I need close to the max amount of strands in. These are all straight strands, and I've had to debond to 4 different lengths from the end. The longest debond is 25' of my ~90' girder. When I look at the…

Hello, There appears to be a font compatibility issue. In the program LEAP GEOMATH V8i, it looks like you should be able to adjust the window in order to see the rest of the menu, however there is no option to move it. This issue is not resolved…

What Time-Dependent Loss model does Conspan use (CEB 90, ACI 209, LRFD 6th etc.)? In the Design Parameters box in the Girder or Analysis tab there are options for Approximate Method, Refined Method, or Pre '2005 Interims' LRFD to compute losses. This…