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Q: The distance measured from the exposed concrete surface to the nearest surface of the reinforcing bar is known as
  • A. Clear cover
  • B. Normal cover
  • C. Effective cover
  • D. Nominal cover
Correct Answer: Option A - The cover is measured as the thickness from the outer surface of the concrete to the nearest surface of the reinforcement, sometimes referred as clear cover. Nominal cover for different members– Slab - 20 mm Beam - 25 mm Column - 40 mm Footing - 50 mm • Nominal cover is the distance from the outer surface to the stirrups. • Effective cover is the distance from the outer surface to mid of main reinforcement.
A. The cover is measured as the thickness from the outer surface of the concrete to the nearest surface of the reinforcement, sometimes referred as clear cover. Nominal cover for different members– Slab - 20 mm Beam - 25 mm Column - 40 mm Footing - 50 mm • Nominal cover is the distance from the outer surface to the stirrups. • Effective cover is the distance from the outer surface to mid of main reinforcement.

Explanations:

The cover is measured as the thickness from the outer surface of the concrete to the nearest surface of the reinforcement, sometimes referred as clear cover. Nominal cover for different members– Slab - 20 mm Beam - 25 mm Column - 40 mm Footing - 50 mm • Nominal cover is the distance from the outer surface to the stirrups. • Effective cover is the distance from the outer surface to mid of main reinforcement.