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Chemical anchors installed into existing concrete should be

  • A.placed as close to the edge of the member as possible for ease of access
  • B.loaded immediately after installation without waiting for the resin to cure
  • C.tested on site by pull-out on a sample
  • D.installed without cleaning the drilled hole

Answer: C

Anchor capacity depends heavily on hole cleaning, resin mixing and curing, none of which can be seen once installed. A pull-out test on a proportion of the anchors is the only practical confirmation that the workmanship was adequate.

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