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Sondex Settlement System

The Sondex Settlement System is used to monitor settlement and heave in excavations, foundations, dams, and embankments. It can also be installed behind retaining structures, such as sheet piles and slurry walls, and above underground openings, such as tunnels and shafts. The Sondex system indicates the depths at which settlement has occurred as well as the total amount of settlement. The Sondex system consists of a probe, signal cable, a cable reel with a built-in voltmeter, and a number of stainless steel sensing rings. A survey tape is typically connected to the probe


12123 Harbour Reach Drive, Mukilteo, Washington, USA 98275, Tel: 425-493-6200, Fax: 425-493-6250, e-mail:

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