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 March 2007
Tech News

Soil and Rock Committee Approves New Standard on Vertical Inclinometer Probes

Soil and rock monitoring programs that use inclinometer probes often run for several years. Normal wear and tear can degrade the probe’s ability to produce useful surveys, though this degradation can happen incrementally and may go unnoticed for some time. A new standard developed by ASTM International Committee D18 on Soil and Rock, D 7299, Practice for Verifying Performance of a Vertical Inclinometer Probe, gives users the means to verify whether inclinometer probes are performing as they should.

Practice D 7299 is under the jurisdiction of Subcommittee D18.23 on Field Instrumentation.

“D 7299 provides a guideline for users who have quality programs association with their instrumentation projects,” says Richard Monroe, D18 member and manger for sales to Europe, Durham Geo Slope Indicator. “Using the standard will help answer questions about how often machinery should be recalibrated, whether the user can do this recalibration themselves and what values to look for when doing the recalibration.”

Monroe says the standard suggests two possible tests for verifying performance. While the first test is rather complex, the second requires only simple apparatus and can be used to obtain a generally accurate response in the field.

Interested parties are welcome to join in the standards developing activities of Subcommittee D18.23. Monroe notes that there are many possibilities for standards within the realm of field instrumentation, including monitoring pore-water pressure.


Technical Information: Richard Monroe, Durham Geo Slope Indicator, Mukilteo, Wash.
Phone: 425/493-6200

ASTM Staff: Robert Morgan
Phone: 610/832-9632

Upcoming Meeting: June 24-27
June Committee Week
Norfolk, Va.

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