Release notes (enhancement and fixes for LEAP Bridge Concrete) for Release 2 of 2021 (v21.2.0.38) (March 2022) 

LEAP Bridge Concrete (LBC) 

• Enhancements for NJDOT 

The following features have been added: 

• Custom surface wear 
• Custom DW load 

• New NJDOT permit vehicle 
• Default strength and service limit states using NJDOT permit vehicle 
• New dynamic load allowance for NJDOT PV 
• Custom rise and fall for uniform temperature load TU 
• Custom prestressed tendon type 

• Custom tension stress check under SLS 
• Custom prestress loss option 
• Custom load factors of seismic load EQ 
• Custom horizontal earth pressure load EH 

• Enhancements for PennDOT 

The following features have been added: 

• Custom elastic shortening (ES) 
• Custom prestressed strand relaxation 
• Custom settings of analysis (release time, age of deck placement, final age) 
• Custom Deflection and Camber 

• PennDOT Box Beams Designation 

• Transfer of steel cross-frames in concrete bridges 

This enhancement allows a user to read steel cross-frames from OpenBridge Modeler into LEAP Bridge Concrete and use them in bridge analysis and design. 

• Improvement to read custom concrete girders from OpenBridge Modeler 

This enhancement offers a user the flexibility to overwrite or save as new beam type when custom beams are read from OpenBridge Modeler under BIM workflow. 

• Consolidation of the template of I-girders 

This enhancement unified the template of I-girders from both precast prestressed concrete girder module and spliced girder module. 

• Added 9 custom I-girders for MSDOT 
• Added 13 custom wide-flange girders for Caltrans 

The following issues are fixed: 

• False red flag of the final stress check summary even though the stress check was ok in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Program crashed when rows were added in the beam definition grid in Precast/Prestressed Girder module of LEAP Bridge Concrete. 

• Program crashed when Save or Save As is pressed from the  main interface prior to accessing any module in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Concentrated moment applied at top of column was incorrectly doubled at point of fixity of shaft in Substructure module of LEAP Bridge Concrete. 
• Diaphragm loading did not work correctly for the adjacent box beams in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Parameter Kz was calculated based on incorrect height of superstructure for the wind load on structure in Substructure module of LEAP Bridge Concrete. 
• Live load effects under Strength II Limit State were calculated based on the incorrect dynamic load factor when the side by side option was selected in Substructure module of LEAP Bridge Concrete. 

• Fatigue stress issue caused by incorrect calculations of the effective area of steel reinforcement in Substructure module of LEAP Bridge Concrete. 
• Girder spacing was incorrectly changed when deck thickness was changed in a user's file in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Box section properties for transition were incorrectly applied to the entire length of the segment in Spliced Girder module of LEAP Bridge Concrete. 
• Resistance factor (Phi) under moment capacity by the equation and strain compatibility was incorrectly changed when design status was pressed for "All" in Spliced Girder module of LEAP Bridge Concrete. 
•  Surcharge of footing under LFD code did not produce the corresponding load effect under footing in Substructure module of LEAP Bridge Concrete. 

• Drastic changes of bridge geometry were triggered when OK button was clicked and working tab was changed in a user's file in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Copying strand patterns led to incorrect deflection calculation as zero in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrect load factor was used for Florida permit vehicle in load rating per LRFD with Florida State option selected in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrect factor of compressive stress limit for temporary stresses before losses under LRFD 8th and 9th editions in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Unable to add new beam sections to the existing beam library in Precast/Prestressed Girder module of LEAP Bridge Concrete. 

• Program crashed when the stirrup was being edited in Rebar Pattern window in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrect steel reinforcement generated in the auto-design process when the temperature load was considered in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrect symbols showed up in the Analysis results when the temperature load was considered in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrect vertical load effect reported and used when the option of the effective footing dimensions was selected in Substructure module of LEAP Bridge Concrete. 
• Incorrect shear reactions for a user's file in Precast/Prestressed Girder module of LEAP Bridge Concrete. 

• Comb zero observed in flexural and punching shear design check for the inverted tee cap in Substructure module of LEAP Bridge Concrete. 
• Incorrect changing of bridge offset was triggered by changes in haunch or curb data in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrect drop of shear capacity was caused by incorrect consideration of the development length of prestressed strand in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• The analysis results were reset each time when the user left the Project page without any changes in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrect moment diagram observed under the noncontinuous span Precast/Prestressed Girder module of LEAP Bridge Concrete. 

• Program crashed when diaphragms were assigned, and the Design Parameter button was clicked in Precast/Prestressed Girder module of LEAP Bridge Concrete. 
• Incorrectly calculated effective area of steel reinforcement with hook in footing in Substructure module of LEAP Bridge Concrete. 
• Live load distribution factors were incorrectly calculated per Caltrans amendment 4.6.2.2.2b in Precast/Prestressed Girder module of LEAP Bridge Concrete.  
• Program crashed during the design check of column’s moment interaction diagram when Texas state specifications was selected, and the custom limit states were used in Substructure module of LEAP Bridge Concrete.