Wall20 ft long, 3 ft high
Brick426 modular with 5% extra
Masonry cement3 bags
Sand0.53 tons
A low brick wall is a classic first masonry project. It still needs a proper footing.
Materials
| Item | Amount |
|---|---|
| Modular brick | 426 |
| Masonry cement | 3 bags |
| Mason sand | 0.53 tons |
| Footing concrete | from the concrete calculator |
Brick per square foot follows BIA Technical Note 10; mortar and sand use a masonry supplier’s published figures.
Sources
- Brick Industry Association, Technical Note 10: Dimensioning and Estimating Brick Masonry
- Chaney Enterprises masonry catalog: mortar quantities per 1,000 units (25 bags and 5 tons of sand for 8 in block; 7 bags and 1.25 tons for modular brick)
Sources last checked 1 November 2026.
Calculators for this project
Frequently asked questions
How many bricks for a 20 x 3 ft wall?
About 405 modular bricks, 426 with 5% extra.