Determine the Standard brick size in mm (Length, Width and Height) as per Standard. Tolerance of brick size Visual Examination for brick dimension.
Test Standard : IS 1077-199, Reaffirmed 2011
Test Appratus : A steel tape.
Test Procedure :
- Selected random 20 Nos of bricks for testing.
- Examine for surface defects like cracks, flaws and nodules of free lime.
- Take twenty brick sample. Remove all blisters, loose particles, clay and small projections from brick.
- Arrange all brick lengthwise in contact with each other and in a straight line at a level surface.
- Measure overall length of the assembled bricks a steel tape.
- Measure width and height of assembled bricks.
The standard brick size
The size of modular bricks
Length (L) mm | Width (W) mm | Height (H) mm |
190 | 90 | 90 |
190 | 90 | 70 |
The size of non-modular bricks
Length (L) mm | Width (W) mm | Height (H) mm |
230 | 110 | 70 |
230 | 110 | 30 |
Tolerances for bricks dimension per 20 bricks
For modular size brick
Length | 3720 to 3880 mm (3800+/- 80 mm) |
Width | 1760 to1840 mm (1800+/-40 mm) |
Height | 760 to 1840 mm (1800+/-40 mm ) (for 90mm height) |
Height | 760 to 840 mm (800+/-40 mm ( for 70 mm height ) |
For non-modular size bricks
Length | 520 to 4680 mm (4600+/- 80 mm) |
Width | 2240 to 2160mm (2200+/- 40 mm) |
Height | 1440 to 1360 mm (1400+/-40 mm) (For 70 mm high bricks) |
Height | 640 to 560 mm (600+/-40 mm) (For 30 mm high bricks) |
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