This Round Robin Exercise 4 is launched by the TensiNet Working Group Specifications and WG5 of the COST Action TU1303 Novel Structural skins and aims at collating reliability indexes for a basic tensioned hypar structure. The exercise is started by Ir.-Arch. Elien De Smedt, Prof. Marijke Mollaert, Prof. Lincy Pyl, Prof Peter Gosling, Dr.-Ing. Jörg Uhlemann and Prof. Jean-Christophe Thomas.

Research institutes, universities, specialised laboratories and engineering offices are invited to volunteer to the Round Robin exercise 4.