Field report: Planetarium Hamburg

… as a historical monument. In the meantime it had become leaky and was no longer working properly. The LPI Ingenieurgesellschaft mbH planning office, which was commissioned to carry out the repair, provided a special waterproof concrete base and then had 250 square metres of upstands and 110 square metres of overflows waterproofed with Triflex liquid applied waterproofing. The dynamic crack bridging, its high mechanical …