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Q: The minimum width of bolted lacing bars shall be
  • A. 6 times the nominal diameter of the end bolts
  • B. 4 times the nominal diameter of the end bolts
  • C. 3 times the nominal diameter of the end bolts
  • D. 2 times the nominal diameter of the end bolts
Correct Answer: Option C - As per IS 800 : 2007 Clause 7.6.2. • In bolted /riveted construction the minimum width of lacing bars shall be three times the nominal diameter of the end bolt/rivet. • The thickness of flat lacing bars shall not be less than one-fortieth of the effective length for single lacing and one-sixtieth of the effective length for double lacings.
C. As per IS 800 : 2007 Clause 7.6.2. • In bolted /riveted construction the minimum width of lacing bars shall be three times the nominal diameter of the end bolt/rivet. • The thickness of flat lacing bars shall not be less than one-fortieth of the effective length for single lacing and one-sixtieth of the effective length for double lacings.

Explanations:

As per IS 800 : 2007 Clause 7.6.2. • In bolted /riveted construction the minimum width of lacing bars shall be three times the nominal diameter of the end bolt/rivet. • The thickness of flat lacing bars shall not be less than one-fortieth of the effective length for single lacing and one-sixtieth of the effective length for double lacings.