Brick, block & aggregate
Masonry takeoffs depend on unit size, wall geometry, bond pattern, joints, openings, reinforcement, and waste. Bulk aggregate adds another variable: density.
Quick reference
| Item | Planning data |
|---|---|
| Nominal CMU | A common nominal 8 × 8 × 16 in. concrete masonry unit has an actual size near 7⅝ × 7⅝ × 15⅝ in.; verify the product and joint assumptions. |
| Wall area | Gross wall area is length × height. Subtract openings only when the takeoff method and units justify it; corners, returns, and cuts may offset some deductions. |
| Fill volume | Cubic feet = length × width × depth, with all dimensions in feet. Cubic yards = cubic feet ÷ 27. |
| Tonnage | Tons depend on aggregate density, gradation, and moisture. Use the supplier's material-specific conversion, not a universal value. |
Values marked common or typical are starting points, not a specification. Confirm the actual product data sheet, label, and project documents.
Brick and block
Confirm unit size, bond, mortar joint, lintels, corners, bond beams, reinforcement, grout, and waste with drawings or the mason. Simple area ratios are planning estimates.
Base and fill
Confirm aggregate type and intended use, compaction requirements, lift thickness, drainage, and geotextile or base details from the project design.
Mortar and compatibility
Choose mortar type and mix based on the masonry unit, exposure, and specification. Structural or historic masonry repairs need more than a generic bag estimate.
Common mistakes
Using nominal unit dimensions as actual dimensions; forgetting corners and returns; treating density as fixed; and estimating retaining or load-bearing work without engineering and drainage details.
Continue planning
Further reading: Manufacturer or industry reference ↗. External guidance may not replace local requirements or product-specific instructions.