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Equipment

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<p>The Model 4350 Vibrating Wire Biaxial Stressmeter is designed to measure compressive stress changes in rock, salt, concrete or ice. Three or six Vibrating Wire sensors oriented at 60° intervals allow the principal stress changes to be measured in the plane ...
<p>The Model 5000 Borehole Deformation Gage is the proven USBM-style gage used to measure in situ rock stresses using the overcoring technique in rock that is competent and elastic. The measurement of in situ stresses is important in the design of underground ...
<p>Borehole Pressure Cells have a long term track record of stress monitoring in both elastic and viscoelastic rock. While typically classified as a soft inclusion, the cell may be filled with mercury to gain stiffness for use as a rigid inclusion in low modulus ...
<p>The standard Borehole Pressure Cell (BPC) is used to measure rock stress changes and is designed to be grouted inside a borehole. The BPC is manufactured from two steel plates welded together around their periphery. The plates are deformed into a “dog bone” ...
<p>The Model 4300 Vibrating Wire Borehole Stressmeters are designed to measure stress changes in rock and can be installed in boreholes up to 100 feet deep. The Stressmeter consists of a high strength steel proving ring wedged tightly across one diameter inside ...
Center-hole load cells are designed to measure loads in tiebacks, rock bolts, and cables. Typical applications include: Proof testing and performance monitoring of tiebacks, rock bolts, and other anchor systems. Monitoring loading of vertical supports in underground ...
<p>The Model 4370 Concrete Stressmeter comprises a short vibrating wire load cell in series with a longer cylinder of concrete. This concrete cylinder has the same properties as the surrounding concrete but is de-bonded from it by means of a smooth-walled, ...
<p>The Model 4810 &ldquo;Fat Back&rdquo; Pressure Cell is intended to measure contact earth pressures on the surface of concrete or steel structures. The cell has an extra thick backplate to minimize any point loading effects. &lsquo;Ears&rsquo; on the cell ...
<p>YieldPoint’s d-CABLE technology allows engineers, technicians, consultants and contractors to monitor how the load develops along 7-wire stand cable bolts over time, and hence to assess the Factor of Safety against cable rupture. The instrument is applicable ...
<p>The Digital Hydrostatic Profile Gauge is used to monitor the profile of settlement or heave and is predominately used for monitoring beneath embankments or structures where access to the surface is not possible. The system comprises a probe assembly, attached ...