Two square cross sectional rods are joined
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• Sleeve and Cotter Joint = Circular rods
• Gib and Cotter Joint = Square/Rectangular rods
- by Sleeve and cotter joint
- by Gib and cotter joint
- by Tie rod joint
- by Flange joint
The Correct Option is B
Solution and Explanation
Cotter joints are temporary fasteners used to connect two co-axial rods subjected to tensile or compressive forces. The two main types of cotter joints studied are:
• Sleeve and Cotter Joint: Connects two cylindrical (circular cross-section) rods using a hollow sleeve.
• Gib and Cotter Joint: Connects two rods where one end is made in the form of a strap/fork (U-shape) and the other is an eye end. It is specifically suited for square or rectangular cross-sectional rods.
Step 2: Role of the Gib:
When connecting square rods using a strap, driving a wedge-like cotter directly can cause the open ends of the U-shaped strap to spread outward. To prevent this, a Gib (a flat plate with hooks at both ends) is introduced alongside the cotter. The gib holds the strap limbs together.
Step 3: Conclusion:
Therefore, a Gib and Cotter Joint is specifically used for square cross-sectional rods, making option (B) correct.
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