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Q: As per BIS specifications, the maximum longitudinal pitch allowed in bolted joints of tension members is about
  • A. 2 times thickness of plate
  • B. 12 times diameter of the bolt
  • C. 16 times thickness of plate
  • D. 16 times diameter of the bolt
Correct Answer: Option C - According to IS 800 : 2007– (a) Pitch 'P' shall not be less than 2.5d where 'd' is the nominal diameter of bolt. (b) Pitch 'P' shall not be more than (i) 16t or 200 mm whichever is less, in case of tension members. (ii) 12t or 200 mm, whichever is less in case of compression member where, t is the thickness of thinnest member.
C. According to IS 800 : 2007– (a) Pitch 'P' shall not be less than 2.5d where 'd' is the nominal diameter of bolt. (b) Pitch 'P' shall not be more than (i) 16t or 200 mm whichever is less, in case of tension members. (ii) 12t or 200 mm, whichever is less in case of compression member where, t is the thickness of thinnest member.

Explanations:

According to IS 800 : 2007– (a) Pitch 'P' shall not be less than 2.5d where 'd' is the nominal diameter of bolt. (b) Pitch 'P' shall not be more than (i) 16t or 200 mm whichever is less, in case of tension members. (ii) 12t or 200 mm, whichever is less in case of compression member where, t is the thickness of thinnest member.