• Minimum f'c Report

    John Lange
    John Lange
    Minimum f'c Report This report shows the minimum required concrete strength to satisfy the compressive stress requirements. The required concrete compressive strength for top and bottom of the section are reported in separate columns. This report is…
    • over 1 year ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • Live load application to straddle bent

    John Lange
    John Lange
    I am designing a post-tensioned straddle bent. The superstructure has 6 girder lines. Is it possible to define a design truck using fixed axle spacing so it appears "stationary" to reflect the live load reactions from girders to a post-tensioned straddle…
    • over 1 year ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • Design of Post-Tensioned X-Beam/Box Beam

    Joe
    Joe
    Some state DOTs require x/box beams without CIP concrete deck to be post-tensioned, as illustrated by the image below. The post-tensioned check box in LEAP Bridge Concrete becomes inactive when X-Beam/Box Beam is selected as the beam type. How do I get…
    • Answered
    • over 3 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • UNKNOWN ERROR DUE TO SRPING STIFFNESS

    Arsenio Aguas
    Arsenio Aguas
    Hello! In the LAYOUT feature under GEOMETRY tab of CONBOX, I cannot continue the analysis whenever I set one CONNECTION as SPRING (with values). I am always ending up in an "UNKNOWN ERROR" message. Can someone please shed a light on this one? Many thanks…
    • over 5 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • "Load Name Must Be Unique" Error

    Dong Wang
    Dong Wang
    Hi, Dear All, After click on "Run Analysis", the error pop-up dialogue tells "loading name must be unique". Did you come across this problem, and how do we fix it? I couldn't figure out what is causing this... Please help. Thanks, Dong
    • over 5 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • LEAP Bridge Concrete CONBOX Live Load Distribution Factor Manual Input

    Dong Wang
    Dong Wang
    Hi, Dear All, I have a quick question on CONBOX live load distribution factor manual input. The bridge model has a tapered deck. So I am trying to enter in the linearly varying live load distribution factor. I wonder if I have to enter the LLDF at 10th…
    • Answered
    • over 5 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • LEAP Bridge Concrete CONBOX "Type Of Duct" Update Bug?

    Dong Wang
    Dong Wang
    Hi, Dear All, I found a bug when I tried to update "Type of Duct" in the CONBOX model as in the attached picture. I am able to update "Type Of Duct" and the "Friction Coeff" will be updated accordingly. However, after the model is updated and saved…
    • Answered
    • over 5 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • Sudden drop in Vc when providing flared sections in Conbox

    Sandhya Ravindran
    Sandhya Ravindran
    The bridge I'm analyzing has a flared girder and superstructure at the expansion piers. This is the cross section I have defined for this bridge: In order to directly obtain the area of steel required to resist direct shear; I removed the stirrups…
    • over 6 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • Self Weight Reaction

    Sandhya Ravindran
    Sandhya Ravindran
    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?
    • over 6 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • LEAP Conbox/Bridge Connect Concrete : Shear Calculation

    Sandhya Ravindran
    Sandhya Ravindran
    LEAP Conbox/Bridge Connect Concrete : How is the area of steel (Av/S reqd)required to resist vertical shear (Vs) calculated in the Detailed Shear Report when no stirrups are provided in a PT Box Girder design?
    • over 6 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • Girder cross section in Leap Bridge

    Hai NguyenHoang
    Hai NguyenHoang
    Dear friend, The library of girder section on Leap Bridge or Leap ConSpan is so limited (Super T girder for example). Are there any solution to expand this one; it is a so wonderful if we can down load the extended library file for these program. If…
    • over 8 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • Several Question regarding Leap Bridge (Conbox or Conspan)

    netsonic
    netsonic
    Conbox——CB Conspan——CS In the CB/CS, these is no place to fill in the lane info, like width of lane, amount of lane, lane location (eccentricity to the ref line of bridge/center line of bridge), How the Leap CB/CS calculate these parameters?…
    • over 11 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • Re: COnbox: Side-by-side option

    Sri
    Sri
    The side-by-side option in CONBOX allows you to apply the provisions of LRFD Art. 4.6.2.2.5 Special Loads with Other Traffic. SBS: Side-by-Side live load responses use the following equations: · LLRsp = LLRsp(PermitLL) * DF1/Z + LLRsp(DesignLL…
    • over 13 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • New Release: LEAP Bridge V8i(SELECTseries 1) v9.0.0

    Sri
    Sri
    Release 9.0.0 of the LEAP Bridge Suite is scheduled to be released June 25, 2009. Several outstanding features are included in this release. Here is a brief list of some of the new features for this version : LEAP Bridge v 9.0.0 incorporates the…
    • over 14 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
  • LEAP Bridge V8i Release Enhancements

    Sri
    Sri
    LEAP Bridge v8.1.0 incorporates the following enhancements: • The ABC Wizard can now directly read in alignment, cross-section and profile information from LandXML files. The bridge model can now be generated very accurately directly utilizing…
    • over 14 years ago
    • LARS | LEAP | OpenBridge | OpenTunnel | RM
    • LARS | LEAP | OpenBridge | OpenTunnel | RM Forum
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