Sheet 03 of 06 · Calculator

Material calculator

Estimate cement, sand, aggregate, steel, bricks, plaster and tiles for your job. Use it to plan a budget or to check a quotation.

Element

How many

Length (m)

Width (m)

Depth (m)

Concrete grade

Steel (% of concrete volume)

Wastage allowance (%) Steel percentage is a thumb rule (slab 1%, beam 2%, column 2%, footing 0.8%). Use the figure from your structural drawings.

How to use these numbers. These are thumb-rule estimates for planning and comparing quotes. Real quantities depend on your drawings, bar bending schedule, site conditions and the materials supplied. Keep a small buffer, and have a structural engineer confirm any structural work.

Assumptions. 1 bag of cement is 50 kg (0.0347 m³). Dry concrete volume is 1.54 times wet volume. Steel weighs 7850 kg per m³. Dry mortar volume is 1.33 times wet volume for brickwork and 1.3 times for plaster. 1 m³ is about 35.3 cft.

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