GATE 2026 AR — Planning – Question 24

Building Construction, Materials, and Structural Systems · Building construction techniques, methods and details: foundation, plinth, masonry, bonds, fenestrations, arches, scaffolding, formwork, timber/RCC/Steel frame construction, roof and roof covering · 1 mark · Numerical answer

Find the minimum number of dry masonry units, each 200×100×100 mm, for a solid wall 3 m long, 2 m high and 0.20 m thick. Give an integer.

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Correct answer: 600 to 660

Explanation

Wall volume is 3×2×0.20=1.2 m³. Each unit occupies 0.20×0.10×0.10=0.002 m³. Dividing gives 1.2/0.002=600 units. The dimensions permit full units to fill the wall and the question specifies dry construction, so no mortar-joint deduction or wastage allowance is added.

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