Material calculator
Measure twice, order once.
Rough quantities for the common jobs, so your first order is close. Your engineer's bill of quantities always comes first.
Per job
Quantities for every ten
| Job | Size | Main material | Cement (50kg bags) | Sand and stone |
|---|---|---|---|---|
| 9 inch block wall | 10 sq m | 100 blocks | 1.5 bags | 0.4 t sharp sand |
| 6 inch block wall | 10 sq m | 100 blocks | 1 bag | 0.3 t sharp sand |
| Plaster one face (15mm) | 10 sq m | None | 1 bag | 0.3 t plaster sand |
| Floor slab (150mm) | 10 sq m | 1.5 cubic m of concrete | 10 bags | 0.8 t sand and 1.5 t granite |
| Strip footing (600 x 225mm) | 10 m run | 1.35 cubic m of concrete | 9 bags | 0.7 t sand and 1.3 t granite |
| Interlocking paving | 10 sq m | 10.5 sq m of stones | None | 0.6 t stone dust |
| Floor tiles 60 x 60 | 10 sq m | 11 sq m of tiles | 2 bags of adhesive | None |
| Wall paint (two coats) | 40 sq m | 20 litres of emulsion | None | None |
| Long-span roof | 100 sq m of plan | about 115 m of sheet | None | None |
Rough planning guides with about five per cent for waste. Your engineer's bill of quantities comes first. Example figures for this demo store.
Mixes
Concrete and mortar mixes
The ratios our trade desk is asked about most. By volume: cement to sand to granite.
- Foundations and slabs
- 1 : 2 : 4
- Columns and beams
- 1 : 1.5 : 3
- Block laying mortar
- 1 : 6
- Plaster
- 1 : 4
- Floor screed
- 1 : 3
- Water
- Only enough to work it
How to use it
From drawing to order
Measure
Take wall lengths and heights, or floor areas, from the drawing.
Divide by ten
Each row is for ten square metres or ten metres of run.
Multiply
Times the row by your figure and round up.
Check with us
Send the list and the trade desk checks it before you pay.
Check my list
Send us your sums
Your measurements or the drawing, and what you are building. We check the quantities and send a priced list.
- desk@thebuildersyard.example
- Lekki-Epe Expressway, Sangotedo, Lagos