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What is the maximum permissible tolerance for length and width respectively?

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What is the maximum permissible tolerance for length and width respectively?

(a) ± 3mm and ± 6mm

(b) ± 6mm and ± 3mm

(c) ± 3cm and ± 6cm

(d) ± 6cm and ± 3cm

I had been asked this question in an online quiz.

The doubt is from Tests on Bricks in chapter Materials for Construction of Basic Civil Engineering

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Correct choice is (b) ± 6mm and ± 3mm

The explanation is: The standard size of brick is length – 190mm and width – 90mm.  When manufactured, size variations may occur by expansion or contraction while drying and burning process.  Permissible tolerance is ± 6mm for length and ± 3mm for width and height.

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