Timber gridshells can cover large spaces with minimum material. However, with\ua0long-term creep deformations, small cross sections and high elasticity, there are potential\ua0stability issues. Historically, pre-stressing systems have been shown to prevent\ua0instability modes in unstable structures. In this project we investigate the benefits\ua0of pre-stressing a geodesic elastic bending-active gridshells serving as a lecture\ua0pavilion. Digital analysis and physical tests are interactively combined to study and\ua0implement various modelling and analysis techniques, pre-stress configurations and\ua0connection details. It is found that an internal pre-stressing system can significantly\ua0increase the stability of in terms of eigenfrequencies
