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The chief practical obstacle to ductile detailing on site is

  • A.the absence of any published standard for it
  • B.the congestion and workmanship the detailing demands
  • C.the cost of the additional concrete required
  • D.the unavailability of hoops of any diameter

Answer: B

Close hoop spacing, bent hooks and continuous joint reinforcement all take care and supervision to build correctly, and shortcuts are hidden once the concrete is placed. Surveys after Indian earthquakes have traced many failures to that gap between drawing and execution.

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