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Transverse reinforcement in a beam-column joint is required to be

  • A.continued through the joint at close spacing
  • B.omitted within the joint to leave room for the beam bars
  • C.provided only on the two faces where beams frame in
  • D.replaced by plain bars of smaller diameter

Answer: A

The joint transfers the full capacity of the framing beams and columns and is subjected to high shear with reversing diagonal cracking. Congestion makes the detail difficult to build, but omitting the hoops has been a repeated cause of joint failure in earthquakes.

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