How the quantities are calculated
Follow the method, check the example and review the assumptions.
How the quantities are calculated
Follow the method, check the example and review the assumptions.
From measurements to materials
Dry volume = finished volume × dry factor. Each material receives its ratio share; cement converts from volume to bags.
Put the numbers in context
One cubic metre with a 1.54 factor and 1:2:4 split uses 1.54 m³ dry ingredients divided into seven total parts.
This illustrates the method; your inputs determine your result.Assumptions to check
- Ratio parts and dry-volume factor come from the applicable work specification.
- Cement bulk density and bag size are explicit inputs.
Limits of this calculation
- Moisture corrections, bulking of sand, admixtures and batching tolerances are not inferred.
Common questions
Why is dry volume larger than finished volume?
Loose ingredients contain voids and consolidate during mixing. The editable factor represents that planning allowance.
Can I use the default ratio for every job?
No. They are editable calculation examples and must be checked against the relevant specification.