Problem:
After a large-scale break in the water pipe, a large amount of water got under the floor slab and under the foundation. In particular, the ground around the piles was washed away, resulting in cracks along the walls of the house with an opening of up to 1-2 mm. The detected slab subsidence was in the range from 15 mm to 155 mm. After carrying out a set of works on the investigation of physical and mechanical characteristics of the soil, local voids with a capacity of up to 300 mm were found, as well as a serious decompaction of the soil in the range from 0 to 3 meters.
Task:
Return the base slab to the design level, as well as stabilize the foundation piles.
Decision:
To restore the working condition of the residential building, the foundation was reinforced under the foundation slab: the piles were stabilized by deep Lifting. After increasing the load-bearing capacity of the base, the Floor lifting method was used to lift and re-level the foundation slab to the design marks. All work on lifting and leveling the structure was under the constant supervision of the geodesic service.
Technological excessive subsidence of a building columns
Stopping subsidence and increasing the load-bearing capacity of the pile foundation
In a residential building, a floor slab sank after a pipe burst
Reinforcement of base soils and re-leveling of floor slab
Leakage of the retaining wall of the entrance to the underground garage
Compaction of soils and plugging of leaks in the retaining wall structure
Eroding the foundation of the supporting columns
Strengthening the foundation foundation without disrupting the entire project schedule
Reinforcement of foundation soils and stabilization of the foundation
Reinforcement of foundation soils and stabilization of the foundation
Strengthening the foundation soil and stabilizing the foundation
Strengthening the foundation soil and stabilizing the foundation
Subsidence of the slab and the appearance of a longitudinal crack
Compaction of the soil with filling the gap under the slab