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Q: An indent of 10 to 20 mm deep provided on one of the flat faces of a hand moulded Common Burnt clay building bricks of height 90 mm or 70 mm is known as:
  • A. Frog
  • B. Arrises
  • C. Perpends
  • D. Course
Correct Answer: Option A - Frog is an indentation or depression on the top face of a brick made with object of forming a key for the mortars. Size of frog = (10 × 4 × 1) cm. Depth of frog = 1 - 2 cm
A. Frog is an indentation or depression on the top face of a brick made with object of forming a key for the mortars. Size of frog = (10 × 4 × 1) cm. Depth of frog = 1 - 2 cm

Explanations:

Frog is an indentation or depression on the top face of a brick made with object of forming a key for the mortars. Size of frog = (10 × 4 × 1) cm. Depth of frog = 1 - 2 cm