GATE 2022 AR — Architecture – Question 47

Project Management and Professional Practice · Estimation, costing and specification · 2 marks · Numerical answer

A 230 mm thick brick wall is 10 m long and 3 m high, built in Flemish bond from 230×112.5×70 mm bricks with 5 mm mortar joints. Estimate required bricks, as an integer.

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Correct answer: 3400 to 3500

Explanation

A course height including mortar is 70+5=75 mm, giving 3000/75=40 courses. A repeating stretcher-header length is 230+112.5+2×5=352.5 mm. Through the 230 mm wall thickness that unit contains three bricks: a header and two stretchers. Thus count≈(10000/352.5)×3×40=3404.26, about 3404 bricks. This bond-based estimate lies within the official 3400–3500 range; end closures and cutting influence exact site quantities.

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