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  • Overstress factors not applied to column in LEAP Concrete?

    Hi there, I am checking column capacity in LEAP Bridge CE V20. The default load combinations I am using are correctly applying the overstress factor (See below screenshot #1), however, the overstress factor is not being applied to the column calculations…
  • Leap bridge concrete Flexure check

    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.
  • 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)
  • Prestress Beam Design Mu-p/r Ration Greater Than 1.00 But Beam Failed

    I am designing a prestressed slab-beam bridge and the design output shows Mr/Mu ratio of 1.06, but the value is shown in red with asterisk next to it indicating the design is not acceptable (see screenshot below). I have not been able to figure out why…
  • 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…
  • Beam properties

    When we try to copy the beam sections (BT-54) without changing any properties, the strands layout is disturbed and few of the rows are disappearing. Original Girder section strand arrangement Name Changed Girder Section strand arrangement Top…
  • RC-Pier LEAP Bridge: Column Seismic Shear Design

    Hello - I am modeling hammerhead piers in RC-Pier Version 20.00.00.58. EQ/ES/LS loads are applied at the bottom of the column with a user-defined seismic load combination. For some piers, the seismic shear output at the top of the column shows Combo …
  • 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…
  • Circular Column Interaction Diagram

    Hello. I'm wondering how LEAP Version 21.01.00.22 calculates the maximum axial load displayed in the diagram. The diagram displays a maximum axial force allowed of 1802 kips. As expected the 1802 kips doesn't change regardless of the load combination…
  • LEAP Bridge Concrete Legal Load Rating Output

    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…
  • Does RC Pier check shear friction in the pier cap (AASHTO 5.7.4)?

    Does RC Pier check shear friction in the pier cap (AASHTO 5.7.4)? I've looked in the output reports and didn't see reference to this spec section. I've also looked in the application help interface and couldn't find it. Note: my application version…
  • Data Modification "Edit..." changes to parameters are not saved even after saving file and exiting the program

    Hello, This is an issue that I have seen with previous versions and still has not been resolved. When the need for different material properties and other design parameters is different from the generalized materials tab parameters, the use of the…
  • RC-Pier LEAP Bridge Concrete SDCL

    Hello, Is LEAP Bridge concrete / RC-Pier capable of having a structure simple span for dead load and continuous for live load (SDCL)? Thanks.
  • LEAP Conspan Multiple Presence Factor

    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…
  • Create/Modify Custom Beam Sections

    I am creating a custom I Beam section but the input fields are constantly being locked, preventing me from updating the dimensions. Restarting the application and going straight to the Beam Section Library sometimes, but not always let me update the dimensions…
  • What's new in OpenBridge Designer V10.09.01.15?

    OpenBridge Designer CONNECT Edition V10.09.01.15 contains the following analytical enhancements, user request enhancements, and bug fixes in its components (RM/LBC/LBS): AASHTO LRFD 9th Edition update (LBC) This enhancement aims to support the…
  • 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…
  • Column Types

    To add columns to the pier structure click on the Column button and it will activate the Column screen. This screen will appear differently depending on the selected column shape, i.e., rectangular, round, rectangular tapered, rectangular chamfered…
  • How to add a Company Logo and Company Name to reports in LEAP Bridge Enterprise.

    One can add a Company Logo and Company Name to your reports generated from LEAP Bridge Enterprise:. Steps To Accomplish: To begin, save your company logo in the form of a JPG or a BMP file to a location on your computer. When you have LEAP Bridge…
  • OpenBridge Designer Functionality

    I am working on the Bentley tutorials but I am confuse on how all of the Open Bridge Desiner connects to Open Bridge Modeler and Leap. do we need to start from OpenBridgeDesigner to have the Modeler and Leap work together. When I create in OpenBridge…
  • What is New in OpenBridge Designer Connect Edition v10.09?

    OpenBridge Designer CONNECT Edition V10.09 is available for all users! OpenBridge Designer CONNECT Edition is a unique application that combines modeling, analysis, and design into one comprehensive bridge product, as it creates a true bridge BIM physical…
  • LEAP Bridge Pier Load Generation

    I have several questions and need clarification on several aspects of the load generation in LEAP Bridge for substructure design. 1. For WS, is the "barrier height" in the Geometry tab used for any other purpose besides determining WS? I want to use…
  • 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…
  • Mu increases as total number of strands decreases

    Hi, I've encountered a scenario in prestressing design where with the decreasing of total number of strands, the Mu provided somehow increases. Attached are two screenshots with different total number of strands & corresponding Mu. -Total number of…
  • Leap-Bridge Concrete: -nan(ind) error

    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.