Brick and CMU Count
Unit count from wall area, unit size, and mortar joint.
Example
You enter
- Wall area (ft²) 100
- Unit type cmu_8x8x16
- Mortar joint (in) 0.375
- Waste factor 0.05
You get
- Unit count (with 5% waste) 119
- Base count 113
- Face area per unit 0.889 ft^2
Details, formula, and sources
Brick count = wall_area / brick_face_area × layer factor. CMU count = wall_area / cmu_face_area. Allow 5% breakage waste.
BIA (Brick Industry Association) Technical Notes by name; NCMA TEK manuals by name.
BIA Tech Notes free at gobrick.com. NCMA TEK manuals free at ncma.org.
Estimate. AHJ and licensed professional govern.
Field names used by the API: wall_area_ft2, unit_type, mortar_joint_in, waste_factor, unit_count, base_count, face_ft2
- Modular brick face area 32 in² (4 in × 8 in nominal) unless user suppliesBIA Tech Note 10