• 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…
  • LBS Substructure Module Imported Centrifugal Force

    Hello, When I first open the Substructure Module there is a CE load that is imported from LBS. This load only has a couple force in the Y direction acting at the exterior bearings. However, when the Auto Generation tool is used, lateral forces…
  • How do I install LEAP RC Pier v14.0019 with our selectserver?

    How do I install LEAP RC Pier v14.0019 with our selectserver? It used to install fine. Now when we try to install on a PC,it asks for the correct activation and selectserver info which we enter then it says its activated, When we click on the executable…
  • 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…
  • Tie Beam / Intermediate Bent / Stacked Columns Design

    Is it possible in RCPier / Substructure / LEAP Concrete V18 to model a tie beam / intermediate bent with a different column diameter above and below the tie beam? Like so: I have tried to enter column information for both diameter columns, but I get…
  • RCPier crashes on open

    I am using Leap Bridge Enterprise v14.00.00.09 in a Win7 environment. When I open the Geomath and Conspan modules, they work fine. When I open RCPier, it gets to a screen which says "Loading Project File" and then crashes, and it sometimes gives me a…
  • RCPier Cap design - shear and torsion

    The attached file shows the output from the cap design module of RCPier v14. Can you tell me why there is a point where phi*Vn=504 and Vu=72.5 yet phi*Vn < Vu? Is this result spurious or is there a reason for this? Also, how can I tell what the most…
  • RC Pier - Lateral Pile Resistance

    How does RC Pier calculate the lateral pile resistance for battered piles? Thanks.
  • RC Pier - EV & EH loads

    I am designing an abutment using RC Pier. Under the Loads tab, I input/generate EV & EH loads. However, when I run an analysis and review the load combinations the vertical or horizontal earth loads are all "0". It appears that these loads are being applied…
  • Temporary supports in RC-Pier

    I want to place an eccentric point load on the footing to model a temporary support in RC-Pier. What's the best way to do that? I tried applying a dead load to the footing tab under DC1, however the input is a little confusing and there is no way to…
  • LEAP RC-Pier Rotated Column on Pile Footing

    We are working a substructure design in which, due to the geometry of the roadway, it may be necessary to have the column rotated at an angle from the orientation of the pile footing on which it sits. In the past we've had to handle this via calculation…
  • Live Loads in RC-Pier

    I noticed my live loads were larger when I auto-generated them in RC-Pier than compared to when I imported them from Conspan. Is there a reason for this? This yields a more conservative pier design, but is it accurate? Thanks.
  • RE: Solid Wall Pier

    Hi, I'm also trying to model a solid wall pier using LEAP RC-Pier V12.01.00.57. This version has the 'Wall Pier' option, however the generated wall design is coming up with rather impractical reinforcement layouts (#18 @ 12") oriented parallel to the…
  • Solid Wall Pier

    What is the best way to model a solid wall pier using RC Pier? I am thinking there are two possibilities: 1) Model short cap (1' height or less) and one column (non-tapered in x and z direction) centered on footing 2) Model short cap (1' height…
  • Importing loads into RC Pier from Conspan

    I have created a model of the roadway in Conspan and then generated the loads and exported them into a text file. I have also created a model of one of the piers for that bridge. When I go to import the loads from the text file I receive an error message…
  • RCPier Ec does not match f'c

    We have the Leap Bridge Precast package which is updated to vers 09.00.02.01. I have found when I have used a 3000 psi Cap/Seat concrete strength the modulus of elasticity, Ec will show the correct value of 3320 ksi, however it has occasionally…
  • Walls in RC Pier

    I am designing a two stage pier wall. There is no option for just a wall in RC pier. Is there a way to trick the program, I have tried a couple of different options but none have worked. The top wall is tapered in both directions and the bottom wall does…
  • RC-Pier Ouput - Alx

    When designing the cap, the shear and torsion output lists a term "Alx" which is defined as "Alx is the EFECTIVE longitudinal steel required in addition to the PROVIDED EFFECTIVE flexural steel." My question is the interpretation of this statement. If…
  • RC-Pier Footing Output

    In the output for LRFD footing design, under the Cracking/Fatigue section, there are "Srqt", "Srqb", "Sprt" and "Sprb" heading with the unit of 'inch'. I cannot find anything in the manual or help that identifies what these heading are for. Can anyone…
  • New Release: LEAP Bridge V8i(SELECTseries 1) v9.0.0

    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…
  • RC-Pier: Best way to input vertical wind loads on pier.

    I'm trying to apply vertical wind loads on a pier per AASHTO LRFD 3.8.2. The problem I have is with the load combination generation. This load shoud only be applied during Strength III and Service IV limit states. Is there a way to specify this for the…
  • LEAP Bridge V8i Release Enhancements

    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…
  • LEAP bridge problems

    Hello all: I am having an extremely difficult time getting through my bridge design on LEAP bridge. Especially while working in GEOMATH and RC PIER. In GEOMATH: Problem #1: Back when I was trying to make minor adjustments to the geometry of the…