Quantities
Solid volume
- where
- volume (m³)
- length (m)
- height (m)
- thickness (mm)
Explain this equation
This gives the solid volume of a rectangular block of material, such as a length of wall, a pier or a slab, when the thickness is in millimetres and the other sizes are in metres.
L is the length and H the height, both in metres. T is the thickness in millimetres, for example 102.5 for a half-brick leaf or 215 for a one-brick wall. V is the result in m³.
Volume is length times height times thickness. Dividing by 1000 turns the millimetre thickness into metres so all three sizes are in the same unit before they are multiplied.
A wall 5 m long, 2 m high and 215 mm thick is 5 × 2 × 0.215 = 2.15 m³. Halve the thickness and the volume halves.
Watch out: this is the gross solid. Cavities, voids and openings must be deducted separately.
Calculate a rectangular solid from metre lengths and millimetre thickness.
Enter your values to see the result.
Good to know
This is gross solid volume. Deduct cavities or voids separately.
Sources
- Geometry / arithmetic
Estimates are not design approval or British Standards compliance checks. Structural arch, retaining-wall, wind, foundation, lintel and masonry-capacity design are not performed. Use the project engineer’s specification.