• Design of Post-Tensioned X-Beam/Box Beam

    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…
  • "Load Name Must Be Unique" Error

    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
  • LEAP Bridge Concrete CONBOX Live Load Distribution Factor Manual Input

    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…
  • LEAP Bridge Concrete CONBOX "Type Of Duct" Update Bug?

    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…
  • Sudden drop in Vc when providing flared sections in Conbox

    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…
  • LEAP Conbox/Bridge Connect Concrete : Shear Calculation

    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?