SEDL / STP / STP392-EB / STP41284S

Measurement of Hydrostatic Uplift Pressure on Spillway Weir with Air Piezometers

Warlam, A. A.
Consulting engineer, Hastings-on-Hudson, N. Y.

Thomas, E. W.
Civil engineer, Foundation & Materials Branch, Omaha District, U. S. Army Corps of Engineers, Omaha, Neb.

Pages: 9    Published: Jan 1965

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Abstract

Air-operated piezometers have been found suitable for measuring water pressure on the base of a concrete spillway weir. Hydrostatic pressure cells were embedded in native chalk; thin plastic tubing leads were extended through freshly poured, large-aggregate concrete. Sheet-brass barriers attached to leads with Flex fittings prevented piping. Operation for 2 1/2 years has been satisfactory.