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Applying the usual factor of safety to a limit load of \( 1471 \) kN gives an ultimate load of

  • A.2207 kN
  • B.1471 kN
  • C.2942 kN
  • D.981 kN

Answer: A

Civil practice uses an ultimate factor of 1.5 on limit load, so \( 1.5 \times 1471 = 2207 \) kN. The structure must carry limit load without detrimental permanent deformation and ultimate load for three seconds without failure.

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