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Q: For double cover butt joints, thickness of each cover plate is taken as-
  • A. 8/5t
  • B. 5/8t
  • C. 3/5t
  • D. 5/3t
Correct Answer: Option B - Butt-joint with double cover-plates– The type of butt joint uses two cover plates one cover plate is placed on both sides of the main plate and riveted. In the double cover butt joint, the thickness of the cover plate is 0.625 times the cover of the main plate (5/8 times the main plate).
B. Butt-joint with double cover-plates– The type of butt joint uses two cover plates one cover plate is placed on both sides of the main plate and riveted. In the double cover butt joint, the thickness of the cover plate is 0.625 times the cover of the main plate (5/8 times the main plate).

Explanations:

Butt-joint with double cover-plates– The type of butt joint uses two cover plates one cover plate is placed on both sides of the main plate and riveted. In the double cover butt joint, the thickness of the cover plate is 0.625 times the cover of the main plate (5/8 times the main plate).