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
Wet mortar = masonry volume − solid brick volume. Dry ingredients = wet mortar × dry factor, split by the cement:sand ratio.
Put the numbers in context
If 500 bricks occupy 0.7695 m³ inside 1 m³ masonry, wet mortar is 0.2305 m³ before the editable dry-volume factor.
This illustrates the method; your inputs determine your result.Assumptions to check
- Brick dimensions describe solid units without joints.
- Mix ratio parts are by volume.
- Cement bags round up to whole bags.
Limits of this calculation
- Actual mortar use varies with frog filling, joint profile, brick tolerance and workmanship.
Common questions
Why do you subtract the brick volume?
Masonry volume includes both bricks and joints. The remaining wet volume is the space occupied by mortar.
Do I have to use a 1:6 mix?
No. It is an editable planning default; use the ratio required by the project specification.