Switzerland – Construction work – Sportplatz Murifeld, Umbau Natur- in Kunststoffrasenspielfeld, 425 Kunststoffrasensportplätze, 463 Belagsarbeiten Oberbau

The intervention is limited exclusively to the playing field and the edge closure/edge plate as well as the directly adjacent shafts. The valuable tree stock must not be affected. At the ends of the field, a root barrier will be created on-site in autumn 2026. Due to groundwater protection, it must be prevented that the rainwater generated can seep away. For this purpose, the playing field will be completely sealed with a bentonite mat. A retention system with lime chippings will be created on the seal, which will also serve as a gravel trap. Drainage suction lines will be laid on the base of the seal for the dewatering of the gravel trap (without gradient or trench formation). A collecting line with gradient will lead the water out of the closed system. The water will then be fed into the cistern via a throttling shaft and a sludge collector. The overflow of the cistern will be connected to and discharged into the public sewer system. Excavation work for the electrical connection of the scoreboard and for the installation of the irrigation system is to be carried out. The mentioned works relate to the BKP463 superstructure. No reference is made to product/brand/design or type designations. If such designations are listed exceptionally, equivalent alternatives are permitted. The equivalence must be proven by the supplier.