As per IS 800 ∶ 2007, what is the maximum pitch of bolts allowed in a lap joint between two steel plates (in compression) of equal of thickness, t?

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  1. 2.5 times diameter of the hole
  2. 2.5 times diameter of the bolt
  3. 12t or 200 mm whichever is less
  4. 16t or 200 mm whichever is less

Answer (Detailed Solution Below)

Option 3 : 12t or 200 mm whichever is less
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Detailed Solution

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Explanation:

As per IS 800: 2007, Cl No: 10.2.3.2, the limits on Pitch in case of bolted connection are:

Maximum pitch < minimum (16t, 200 mm) → For Tension Members

Maximum pitch < minimum (12t, 200 mm) → For Compression Members

Where, t is the thickness of thinner plate.

Note:

1. The above values can be increased by 50 % if bolts are staggered and gauge distance does not exceed 75 mm.

2. Minimum Pitch = 2.5 times the nominal diameter of bolt.

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