Question

The size of frog provided in the standard brick should be:
1. 10 × 3 × 1 cm
2. 9 × 4 × 1 cm
3. 10 × 4 × 1 cm
4. 9 × 4 × 0.8 cm

Answer 1

Correct Answer - Option 3 : 10 × 4 × 1 cm

Frog is an indentation or depression on the top face of a brick made with the object of forming a key for the mortars. This reduces the weight of the brick also.

Size of frog = 100 mm × 40 mm × 10 mm

Depth of frog = 10mm to 20mm

Purpose of frog:

It will provide a key for holding mortar in brick masonry

It can be use for branding purpose