Answer / t.vinod kumar sriharikota

frog is placed at top of the brick which shows the manufacturer name and it acts as key between the layers.

Answer / pravin

part of brick...at top side

Answer / ram

A depression the Face of the Brick

Answer / er. umesh sharma

frog is a depression on the top of the brick which acts as a key in between two courses of the masonry.It also show the manufacturer name.

Answer / vivek

it is the top prtion of the brick....

Answer / amar kantak

A TYPE OF MECHANICAL DEVICE OR JOINT.

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