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Q: The effective width of a column strip of a flat slab is taken as:
  • A. One-fourth the width of the panel
  • B. Half the width of the panel
  • C. Half the diameter of the column
  • D. The diameter of the column
Correct Answer: Option A - According to IS 456:2000, clause 31.1.1,The effective width of a column strip of a flat slab is taken as one-fourth the width of the panel. Column strip means a design strip having width of 0.25L2, but not greater than 0.25L1, on each side of the column centre line.
A. According to IS 456:2000, clause 31.1.1,The effective width of a column strip of a flat slab is taken as one-fourth the width of the panel. Column strip means a design strip having width of 0.25L2, but not greater than 0.25L1, on each side of the column centre line.

Explanations:

According to IS 456:2000, clause 31.1.1,The effective width of a column strip of a flat slab is taken as one-fourth the width of the panel. Column strip means a design strip having width of 0.25L2, but not greater than 0.25L1, on each side of the column centre line.