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  • Bar Development Error for Calculating Flexural Capacity

    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…
  • Item attached with beam is missing after placing bearing in OpenBridge CE-Version 10.11,which will not happen in lower version software

    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.
  • Column P-Delta Effects

    Hi. When LEAP determines the moment interaction diagram of a column that was analyzed using P-Delta affects does LEAP adjust the moment interaction diagram for the deflections? Such as for a loss of stiffness in the columns due to the deflections as stated…
  • Two bridges connection

    Hello, I,m trying to create a Bent where 2 separate bridges meet, is this even possible to model in Openbridge Modeler? Ultimately, I want to transfer the model to LEAP to run the analysis.
  • LEAP Bridge Concrete Legal Load Rating Output

    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…
  • LEAP Concrete Superstructure: Girder-by-Girder Analysis

    I'm running a curved bridge in LEAP Concrete. The begin and end bents have different skews resulting in variable girder lengths. LEAP suggests running the, "Girder-by-Girder" analysis. However, when running this analysis my girder is failing, miserably…
  • Auto Generated Live Load Cases in LEAP Bridge Concrete - Substructure

    I am designing a hammerhead pier using the substructure module in LEAP Bridge Concrete. The geometry is a little odd...it's a hammerhead cap on a circular column. To compare the results for the cap design from the conventional sectional design & strut…
  • Why does Leap Bridge Substructure Calculate Braking Loads using the Two Design Truck Live Load?

    When I generate live loads I do want the program to include the two design truck load for live load reactions but it does not seem correct to use that load when calculating braking forces. They should only be based on the design truck per AASHTO LRFD…
  • What’s New in LEAP Bridge Concrete CONNECT Edition V17 U1 Maintenance Release (December 20, 2017)

    We recently identified a few issues in the current market version 17.01.00.36 of LEAP Bridge Concrete. The details of those issues are as shown below. We have fixed the issues, and created a maintenance release (v17.01.01.11). Precast/Prestressed…
  • Leap Bridge Concrete Wall Pier - Moments at bottom of wall

    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…
  • Bearing Spacing Dimensions Differ Between Main Bridge Model and Substructure Module

    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…
  • LEAP Bridge Concrete DW loads

    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…
  • LEAP Bridge Concrete Reactions

    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.
  • LEAP Bridge Substructure/RC-Pier LFD Live Loads in the Negative Moment Region

    I am using the LEAP Bridge Substructure module to design a pier for a continuous 4 span structure using HS20 LFD loads. In the AASHTO Standard Specifications, it gives you a few options for the loading. One is that you can use a lane load with one concentrated…
  • LEAP Bridge Concrete v16.01.00.10 - Substructure - Can Pier have a tapered cap and have a off-set column?

    I try to create a pier with a tapered cap, which is unsymmetrical and with a column near one edge. Is it possible? I know i can create a symmetrical cap with a column offset from the center, but the location of non-tapered segment cannot be modified…