Browse By Tags

  • LEAP Substructure - Full height abutment on piles - footing reinforcement design

    Hi - I'm designing a full height abutment and wingwalls on a shared footing supported on piles. LEAP has calculated an extremely large design moment and I can't quite back into the number. Can you explain how the software determines the maximum design…
  • How to change the stress limits for the intermediate bent cap from normal exposure (=0.19 sqrt(fc) <0.6ksi ) to severe exposure (=0.0948 sqrt (fc)<0.3ksi) in leap bridge concrete

    I need to change the stress limits for the bent cap from normal exposure (=0.19 sqrt(fc) <0.6ksi ) to severe exposure (=0.0948 sqrt (fc)<0.3ksi)
  • RCPier P-Delta Analysis increases axial forces in the column.

    When running analysis with and without P-delta I noticed there is a substantial increase in the axial column force when P-delta is applied. At the node 1 the difference is about 300 kips. What could be a reason for such an increase? Any insight is appreciated…
  • Has Leap Bridge Concrete been updated to expand the use of Strut and Tie Modeling (STM)?

    My version of Leap Bridge Concrete currently allows for the use of STM in hammerhead pier caps, but we also need that option for all cap types in multi-column bents. We also need an STM option for prestressed and CIP concrete girders in Leap Bridge Concrete…
  • Shrinkage Strain Load & Moment capacity error - LBC Substructure

    I have bent that is being constructed in two phases so some shrinkage will happen on the first phase before the next phase is constructed. In the final condition, I could assume the entire shrinkage strain is applied to both sections but that will be…
  • LEAP (RC-Pier) IMPROVEMENT ? import multiple files at once

    Hello, Currently, when trying to import girder reaction (bearing loads) specifically for Live load. The user needs to upload one Text file at the time. This is very time consuming and requires a lot of attention to avoid any mistake while selecting…
  • LEAP Bridge - RCPier Centrifugal Forces Considerations

    Hi, There are cases where centrifugal forces produce a moment that actually counteracts the critical moment in the column, does RCPier consider effects due to vehicle cases without centrifugal forces as provisioned in AASHTO Spec (See below excerpt…
  • LEAP RC-PIER P-delta effect in load combinations

    When checking Show P-delta Effects in the Analysis tab, are the values shown represent values with p-delta effect? For example, are the column/shaft moments magnified with p-delta factor in these load combinations (with a "C" on the end of the LC#)? If…
  • Hammer Head Pier Design Using Strut and Tie - Vertical Tension Ties

    I am designing a hammer head pier cap using LEAP Bridge Concrete's strut and tie option. I have input "main bars" and "stirrups" under the Cap tab. When I check the Design Status of the pier cap, I do not see where it checks the stirrup input against…
  • 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…