600 m3 metal tanks of a brewery have been supported with block foundations on 5 to
7 m thick loess soil. When the tanks, each supported by four columns, were first filled,
the internal foundations settled 20 to 30 cm, while the outside foundations settled
only 2 to 7 cm. The steel structure supporting the tanks was not able to resist this
difference and deteriorated. The tanks collapsed, also damaging nearby buildings.
The existing block foundations were reinforced by surrounding them by 9 m deep trench
pillars. The maximum settlement after refilling the tanks was 8 mm.