BUILDING & PLANNING · DENSITY CALCULATOR
Common burnt clay brick masonry weighs 1,920 kg/m³ (18.85 kN/m³) by IS 875, the value used for wall loads. The bricks themselves weigh 1,600 to 1,920 kg/m³, engineering bricks 2,160 kg/m³ and sand cement bricks 1,840 kg/m³.
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| Unit weight | 18.83 kN/m³ |
| Density | 1.920 g/cm³ (t/m³) |
| Density | 119.9 lb/ft³ |
| Mass in tonnes | 1.920 t |
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From IS 875 (Part 1):1987 Table 1.
| Material | Unit weight | Density |
|---|---|---|
| Brick masonry, common burnt clay bricks | 18.85 kN/m³ | 1,920 kg/m³ |
| Common burnt clay bricks | 15.70 to 18.85 kN/m³ | 1,600 to 1,920 kg/m³ |
| Engineering bricks | 21.20 kN/m³ | 2,160 kg/m³ |
| Sand cement bricks | 18.05 kN/m³ | 1,840 kg/m³ |
To convert: kN/m³ = kg/m³ × 9.81 ÷ 1,000; lb/ft³ = kg/m³ × 0.0624.
The weight of 2.5 m³ of brick:
18.85 kN/m³ × 0.23 m = 4.34 kN per m² of wall face, before plaster. A 3 m high wall is about 13 kN per metre run.
At IS 875's 1,600 to 1,920 kg/m³, a 190 × 90 × 90 mm brick weighs about 2.5 to 3.0 kg and a 230 × 110 × 75 mm brick about 3.0 to 3.6 kg, depending on the clay and how well it is burnt.
About 120 lb/ft³ (1,920 kg/m³).
