Sand is the bulkiest material on a building site and the easiest to waste. A sound estimate stops you running out mid-plaster or paying for lorry loads that wash away in the first rain.
The Thumb Rule
| House | Sand at 1.8 cft / sq ft | Approx. tonnes |
|---|---|---|
| 1,000 sq ft | 1,800 cft | 75 – 80 t |
| 1,500 sq ft | 2,700 cft | 115 – 120 t |
| 2,400 sq ft (G+1) | 4,300 cft | 180 – 195 t |
Tonnes are approximate, at about 22–24 cft of dry sand per tonne.
Where the Sand Goes
| Use | Typical share | Sand type |
|---|---|---|
| Concrete (footings, frame, slabs, PCC) | 30 – 35% | Concrete-grade M-sand or river sand |
| Masonry mortar | 20 – 30% (much less with AAC adhesive) | Masonry sand |
| Plaster | 25 – 35% | Plaster-grade, finely graded |
| Flooring base and misc. | 10% | Concrete or masonry sand |
Estimating from Drawings
- Concrete: volume × 0.42 m³ of sand per m³ for M20.
- Mortar: masonry volume × mortar share × sand per m³ of mortar for the mix.
- Plaster: about 5 cft per 100 sq ft for 12 mm internal 1:6 plaster; about 8 cft for 20 mm external 1:4.
Which Sand?
River sand supply is restricted in many places, and manufactured sand (M-sand) is now the norm for most Hyderabad sites. Use concrete-grade M-sand for concrete and plaster-grade (finer) sand for plastering, and check for excess silt and dust.
Cutting Waste
- Store on a hard, drained surface, not loose soil.
- Cover stockpiles against rain and wind — especially June to September.
- Use measuring boxes for every mix.
- Order by stage, so sand does not sit for months.
The Short Version
Budget about 1.8 cft of sand per sq ft, split roughly a third each to concrete, masonry and plaster, and less if you build with AAC. Use the right grade for each job and protect the stockpile.
