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A cover meter is used on an existing building to

  • A.detect voids and honeycombing within the depth of a structural member
  • B.measure the chloride content of the concrete at the level of the reinforcement
  • C.locate the reinforcement and measure the cover over it
  • D.measure the compressive strength of the concrete in place without cutting cores

Answer: C

Correct answer: locate the reinforcement and measure the cover over it

A cover meter detects the steel electromagnetically, so it finds the bars, their spacing and the depth of concrete over them without breaking out. That matters twice over in retrofit work: the reinforcement layout is often undocumented, and the cover governs how long the steel will be protected from corrosion.

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