Comprehensive design calculation reports have been added for Chinese JTG 3362-2018 bridge superstructure design checks for shear, torsion, and combined shear and torsion.

Temperature loads can now be applied to rail tracks. Loads can vary along the length of the track. Nonlinear analysis can capture slippage at the track supports, and linear or nonlinear buckling of the track under temperature loading can be analyzed.

Temperature loads applied to bridge objects are now automatically applied to their tendons when the tendons are modeled as elements.

Issues reported by users have been corrected.

The strength design of substructure (bent) columns has been added according to the AASHTO LRFD 2020 code. Design is controlled by defining one or more Design Requests which can specify a set of load combinations, bent columns, column stations, and other parameters to be considered. Results for each Design Request are provided in the form of an Excel spreadsheet that can be used for further calculations and for inclusion in reports. Design results are also available in database tables for display, export, and reporting.

New and updated property libraries:

• • New Indian frame-property library for steel sections
• • Updated Chinese frame-property library
• • New Canadian material-property library

New database tables "Bridge Object Forces with Tendons" and "Bridge Object Girder Forces with Tendons", providing the secondary prestress forces on the full bridge section and the individual bridge girders

The Application Programming Interface (API) now offers more control for connecting to multiple instances of CSiBridge, a new interface to simplify the development of plugins, and speed enhancements for external .NET clients.

Issues reported by users have been corrected.

Bridge tendon layout can now be parametrically defined directly with respect to any girder as well as the bridge layout line.

Bridge superstructure design according to the AASHTO LRFD 2020 code has been added. This new code is also available as a resistance code for superstructure rating.

Longitudinal web stiffeners for steel I-girders and steel U-girders can now be modeled on a girder-by-girder basis. These stiffeners are carried through modeling, analysis, design and rating.

The ability to enable/disabled the coupling between major bending, shear V2, and torsion is now available for channel and general sections.

New vehicles have been added to the AASHTO Rating and Caltrans libraries.

Steel frame design according to the AASHTO 2020 LRFD code has been added.

Moving load response recovery has been sped up by means of multi-threading for database tables and the bridge object response display.

Superstructure design calculation reports are now available for multicell concrete box and concrete T-beam bridges according to the IRC code.

Staged-construction operations Pour Concrete and Remove Forms are now available for Super-T bridge sections. Using these operations, the weight of the wet concrete slab can be applied to the girders in one stage, and the stiffness of the cured slab activated in a subsequent stage.

Performance has been improved for models with frame elements in the presence of many load patterns. This includes speed increases in stiffness formation, event determination, and state-update operations. Nonlinear static, staged-construction, and nonlinear direct-integration time-history load cases will benefit the most.

Speed improvements have been made for calculating joint-reaction response for influence-based moving-load cases.

Temperature gradient loading has been added according to the IRC:6-2017 code.

The IRC vehicle library has been expanded to include the Special Vehicle (SV), Fatigue Truck (40T), and 70R Tracked vehicle per the IRC:6-2017 code.