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Anchorage of beam bars into a beam-column joint matters because

  • A.slipping bars increase the stiffness of the connection
  • B.anchorage affects durability but not strength
  • C.a bar that slips cannot develop the force the design assumed
  • D.the joint carries no force and the anchorage is decorative

Answer: C

Under reversing load the bar is pulled from one side and pushed from the other, and progressive slip destroys the moment connection the frame depends on. Standard hooks bent into the joint core are the usual way of guaranteeing the anchorage.

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