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Q: In a built-up compression member made up by two channels back to back placed with each other, the two parts are integrated by the use of
  • A. Batten plates
  • B. Connecting rods
  • C. Sag rods
  • D. Gusset plates
Correct Answer: Option A - Batten plates are used when the compression member composed of two flange, channels or T-section back to back in contact or separated by a small distance shall be connected together by riveting, bolting or welding so that the ratio of slenderness of each member between the connections is not greater than 40 or not greater than 0.6 times most unfavourable ratio of slenderness of the strut as a whole whichever is less.
A. Batten plates are used when the compression member composed of two flange, channels or T-section back to back in contact or separated by a small distance shall be connected together by riveting, bolting or welding so that the ratio of slenderness of each member between the connections is not greater than 40 or not greater than 0.6 times most unfavourable ratio of slenderness of the strut as a whole whichever is less.

Explanations:

Batten plates are used when the compression member composed of two flange, channels or T-section back to back in contact or separated by a small distance shall be connected together by riveting, bolting or welding so that the ratio of slenderness of each member between the connections is not greater than 40 or not greater than 0.6 times most unfavourable ratio of slenderness of the strut as a whole whichever is less.