The physical model, which shows a true representation of what structural elements look like, is used for layout, drawing production and documentation, whereas the analytical model can be bi-directionally linked to third-party structural analysis applications to enable a more integrated design process. Whereas Revit Building uses a single model, Revit Structure uses two and automatically generates an editable analytical model alongside the physical model you create. With Revit StructureÝs change management engine everything is linked ± a change made in one view is propagated everywhere. This is a different approach to many 3D systems which derive 2D drawings and schedule data from a master 3D model, but not the other way around.

This isnÝt just restricted to geometry however, as the master model can also be amended by making changes to linked schedules ± by altering the size of a column, for example.

All of these views are stored in a central project browser rather than in individual files and any changes made, such as moving the position of a member, will be reflected across the whole project. You can view your model in 2D, 3D, elevation, section, and detail and each will give you a live view taken from the master database. Like Revit Building, it is a database-driven application built around a single model. Revit Structure is a design and documentation solution specifically developed for structural engineers. The product was launched in the US last year, but it has taken 12 months for it to make its way across the pond, maturing into third release and picking up localisation for the UK market on the way. The parametric building modeller, which provides the architectural element to AutodeskÝs Building Information Modelling philosophy, has now been joined by a structural engineering partner, Revit Structure. Revit Building was only ever meant to be one part of the much bigger picture that is BIM. Bidirectional linking means that analysis results automatically update your model if any member size has changed. The analytical model can be dynamically linked with external structural analysis and design programs.

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