During the construction of a new underground car park, leaks at expansion joints and connections as well as cracking occurred on the steel fibre concrete floor slab and on the flat roof construction made with waterproof concrete.

• Expert opinion on the causes of leakage at flat roof construction and cracks in the base plate
• Surveying inspection of floor slab evenness (levelling) and evaluation of measurement results with regard to the requirements of DIN 18202 (dimensional tolerances)
• Suggestions for the repair of flat roof sealing, for the revision of cracks in the base plate and for drainage of parking space areas
• Cost estimate for repair work