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Benchmarks for the monitoring of subsidence and deformations of pipelines

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Benchmarks are used for the control of subsidence and deformations of underground pipelines with external Dn= 530-1020 mm. They are mounted on underground pipelines with 5-40 m cycle.


It consists of precast brace with welded to the upper half of the metal pin (position 4), is trapped between the soil loosely fitted pipes (position 2) with guaranteed clearance. The hole between the pipe and the probe closes easily removable lid (position 3).

Bandage trihedral is 2 half couplings are made out of steel plate (position 3). Half couplings should be tightened around the pipe Bottom bolts (position 5).