I am using AASHTO LRFD and IDOT does not have conventional longitudinal reinforcing in their PPC IL-Beams, but IDOT does consider bonded prestressing strands as sufficient in resisting the temporary tensile forces in prestressed concrete before losses…

Hi If we define bar length, is leap bridge software have capability to deduct development length based on dia of bar and calculate flexure check at that point.

Hello, I am not matching LEAP's operating rating factors for shear (screenshots below) - 0.99 (HL93 Inventory), 1.46 (HL93 Operating), and 0.78 (FL120). I am using the appropriate live load factor for each case. The difference seems to be in the Shear…

I am analyzing a pier supporting 2 simple spans that are 45 degree skewed. 1. I am confused what offset needs to be entered in superstructure definition? 2. How is this offset playing a role in LL generation? I noticed that changing offset is changing…

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…

how can I find other limit state result? It shows up SER I, SER III, STR I, and FAT I.

Hello, I have 95 ft long and 12 ft wide abutment footing on 2 rows of piles. Abut stem is 88 ft long. How is the Leap program calculating Dist (ft) , dv, Vu and Phi Vc for X and Z ? I will appreciate the response. Thanks,

How does LEAP Conspan apply multiple presence factors if live load distribution factors are entered manually? If distribution factors are entered manually, is it up to the user to apply the multiple presence factor to the manually inputted distribution…

Hi, I am trying to design prestressed concrete 78" Girder with 8.25" Slab thick. my Prestressing steel centroid is Ypg=9.88 in and total section height H=86.25" so my dp=H- ypg=86.25-9.88=76.37". I have no mild reinforcement in the girder, so dp=de…

How does leap concrete bridge calculate the deflection due to live load on prestressed concrete girders below cast in place slab. I tried all types of presence factors, aashto... etc . Could reach to similar results

Hi, I am designing a bridge with draped strands in a prestressed concrete beam. Typically the owner likes to have the bottom strands to 0.75, and they like to have 4 strands in the top stressed to 0.17. When I add in the top row, the default is…

Hello, I need to run a flared girder analysis with two different beam types on the same span. I have been able to do this for a while without any issues, but now any new model I make with different beam types will give me an error when I re-open it…

I get the -nan(ind) error during final stress check whenever I provide temperature load for the girders. Is there a solution to this issue? I am using LEAP Bridge Concrete CE 19.02.00.33.

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…

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?

Hello, I am designing a multi-column pier substructure for a bridge. The substructure model is connected to the superstructure so I am able to auto-generate the superstructure dead load, Braking load, and Permit Live Loads. However, the button to generate…

Hi I am designing 2 span continuous bridge with FIB 54 beams by opting full continuity, disregards restraining moments option. After analyzing and iteration of strand pattern and providing huge negative steel, i am not able to reduce tension stress…

Occasionally when I print beam design results, I will get zero camber and deflection values reported in the design summary. I have to go back and rerun the analysis and that clears it up. Is this bug documented and is there a fix?