Watch a feature video

In previous versions

P-Y curves

Watch how to define p-y curves to represent soil properties adjacent to the piles in an integral bridge model (Version 20).


RC Slab / wall design

Watch how to define a reinforcement arrangement and set up a design check to carry out an assessment of utilisation. (Version 20)

User Experience Improvements

Watch an overview of key new facilities that improve the use of LUSAS for all users. (Version 20)

Steel Composite Bridge Wizard

Watch how to create a beam and shell model of a 3-span curved steel composite bridge using the Steel Composite Bridge Wizard. 


Composite sections, girders, spans, supports are defined prior to generating an initial bridge model from the input data. Stiffeners and cross-bracing details are added also using the wizard and the bridge is re-generated to show their inclusion in the model. After solving the model, bending moment results are displayed for a selected girder by using the slice resultants facility. (Version 19)

Steel Composite Bridge Deck Design

Watch  the steps involved to carry out a design check of a composite girder member of a 3-span curved bridge deck to AASHTO LRFD 8th Edition. (Version 19)

Branched analysis for staged construction checks

Watch how to use the branched analysis facility to set-up and carry out buckling, stability and other what-if checks for chosen construction stages, or to consider an alternative construction sequence. (Version 19)

Grillage modelling

Watch the use of the grillage wizard and the new bridge deck grillage geometric and materal attributes to model a single span skewed deck formed of slab and beams. Short-term, Long-term and dead loadcases are investigated showing stresses obtained for each. (Version 19)

Influence analysis and enhanced vehicle load optimisation

Understand key aspects of influence analysis and watch how influence analysis can now also be carried at beam/shell slice resultant locations. (Version 19)

CS 458 and AASHTO MBE traffic loading

The Vehicle Load Optimisation facility has been extended to support optimised loading and custom vehicles for United Kingdom CS 458 rev 0 with ALL Model 1 and United States of America AASHTO MBE Section 6A (LRFR). (Version 19.1)

Cut and Cover Tunnel Modelling

Watch how activation and deactivation of elements is used to model the staged construction process of excavating the soil, installing ground anchors and constructing the tunnel structure. 

A linear and a nonlinear analysis is performed to evaluate using different soil properties, and a soil stability check using the Phi-c reduction method is carried out. Live loading to simulate vehicles passing over the ground above the tunnel is applied prior to looking at bending moments in the structural elements.  (Version 19.0)