size of the standard brick is 190cm*90cm*90cm and
the size of the nominal brick is 200cm*100cm*100cm which includes the thickness of the mortar in joint.

the minimum crushing or compressive strength of the bricks is 3.5 N/mm^2 as per BIS:1077-1957

sorry for the above answer.
size of the standard brick is 190mm*90*mm*90mm.
size of the nominal brick which includes mortar thickness
is 200mm*100mm*100mm.
the compressive strength or crushing strength of the
bricks as per BIS:1077-1957 will be 3.5 N/mm^2 (minimum).

size of the standard brick is 190mm*90*mm*90mm.
burnt clay bricks
the minimum compressive strength shall not be less than
8.5 MPa for individual bricks and 10.5 MPa for average of 5
specimens as per IS:1077

traditional size of the brick is 9"*4.25"*2.5"
(228 × 107 × 69 mm)
Nominal size of brick is 190 cm *90 cm* 90 cm
the minimum compressive strength shall not be less than
8.5 MPa for individual bricks and 10.5 MPa for average of 5
specimens as per IS:1077.
For A class bricks this value is as high as 35MPa