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…
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…
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…
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…
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
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…
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…
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 : 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?
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…
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?…
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…
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…
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…