StaG is a parametric stadium generator software used for the design and optimisation of seating bowls. Developed by the Arup Sports Venue Design team, it unites our bowl design technical expertise with advanced programing techniques. StaG is at the core of our stadia and arena design development and used extensively by our specialist sports architects.

The application generates seating bowl geometry including tiers, seats, vomitories, gangways, tunnels and barriers based on a wide range of criteria. All the parameters are controlled via a sophisticated user interface that supports both manual and automatic input to allow greater flexibility.

StaG also provides detailed feedback and analysis of the resulting design. This allows for intelligent interpretation of various design solutions, and fast iterative adjustment between options to efficiently evolve the design to an optimum solution.

The software integrates with the popular 3d modelling package Rhino, and is optionally controllable through its general-purpose parametric engine Grasshopper, ensuring interoperability with a wide range of different data formats. This facilitates the holistic design of the bowl in conjunction with the stadium and its surroundings.

For more extensive project documentation, we are also able to use interoperable workflows to create the StaG geometry as a native component in a BIM environment, resulting in a BIM-ready model.

When engaged to define the external envelope of the building our architects and engineers are equally conversant with packages such as Rhino, Grasshopper and CATIA, which we use to optimise complex geometrical shapes into aesthetic and functional solutions that respond to the building concept.

Whilst the design technologies used to shape projects are primarily driven by bespoke specialist software, the design team also uses the standard packages for visualisations and animations essential to demonstrate the features of our venues.