Civil Engineering (CE)

The nominal bearing strength of the bolt is given by 2.5 Kb dt fu, where Kb depends upon:
1) Edge distance
2) Bolt diameter
3) Diameter of bolt hole
4) Ultimate tensile stress of bolt
5) Ultimate tensile stress of plate Of the above
  • a)
    1, 3, 4 and 5 are correct
  • b)
    1, 2 and 4 are correct
  • c)
    3, 4 and 5 are correct
  • d)
    2, 3, 4 and 5 are correct
Correct answer is option 'A'. Can you explain this answer?

Mridul Sharma answered  •  5 hours ago
Yes according to IS 456 : 2000 value of Kb does not depend on diameter of bolt (D) but it depends upon diameter of bolt hole (Do) and this code also suggest that diameter of bolt hole (Do) is depends on diameter of bolt (D).. as if it is between {12 to 14, Do = D+1}
{16 to 24 , Do = D+2} And for greater than 24 Do = D+3.. and it concludes that Kb is also depends on Diameter of bolt hole as we
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