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For a section with one axis of symmetry, the shear centre

  • A.Always coincides with the centroid
  • B.Lies outside the section
  • C.Cannot be located
  • D.Lies on that axis of symmetry

Answer: D

Symmetry forces the shear flows either side of the axis to mirror one another, so their resultant must lie on it. One axis of symmetry therefore fixes one coordinate of the shear centre and only the other has to be computed.

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