The level of ground water is practically 1 meter below the foundation slab foot.
was enclosed by in-situ reinforced diaphragm walls, thickness 60 cm, gross area 890 m2
, which acted as bearing and anti-filtration structures at the same time.
Diaphragm walls were constructed by application of hydraulic grab equipment by technology developed by French company "SOLETANCHE BACHY", providing for sealing of joints between panels by "Waterstops"
Trenches were excavated under protection of bentonite slurry by portions 6.3 to 7.1 meter long. The quality of joints between diaphragm walls was secured due to using of L-shaped corner portions.