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Structural Monitoring Instrumentation

Strain, Stress and Load Measurements


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Vibrating Wire Centre Hole Load Cell are used for measurement and control of loads, in Rock bolts, tiebacks anchors, foundation anchors tunnel supports and in prestressing of concrete "presstressed girdars" used for Bridge & elevated construction.

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The VW NATM type shotcrete stress cells are designed to measure radial and tangential stress in shotcrete tunnel linings, The cell consists of a rectangular pressure pad constrcted from two stainless steel plates welded around the periphery.

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The Vibrating Wire type Pressure Cells are used for the measurement and control of Pressure/Stress distribution with in embankments and dams. Vibrating Wire Pressure Cells are also used in the measurement of "Contact pressure" on retaining/diaphragm walls, piers and abutments and lining of underground excavations.

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Vibrating Wire Strain Gauge Embedment Type is used for measurement of internal strain in concrete by embeding the structure in single of multi axis configruation. Each gauge contains a high tensile steel wire inn tension between two end flanges and enclosed in steel tube.

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Vibrating Wire Temperature Gauge is suitable for the measurement and monitoring of temperature changes (rise/fall) in concrete, Soil & Rocks. It is also meant for remote reading, scanning and data logging.

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Vibrating wire type Surface mounted type Strain Gauges are used for measurement of strain on the surface of metal/concrete. The V. Wire strain gage uses a high tensile steel wire in tension between the two ends blocks to sense the variation insurface strain over the gauge length.