Calculateur de Blocs de Béton Gratuit
Calculez le nombre de blocs de béton nécessaires pour un mur. Entrez les dimensions du mur et la taille des blocs pour un résultat instantané.
Standard CMU is 16 inches including mortar joint
Standard CMU is 8 inches including mortar joint
Blocks (with waste)
284
Blocks (with waste) vs Wall Length
Formule
## How to Calculate Concrete Blocks Needed ### Formula **Blocks = Wall Area / Block Face Area** A standard CMU (Concrete Masonry Unit) is 8 in x 8 in x 16 in nominal (including mortar). The face area of one block with mortar is (16/12) x (8/12) = 0.889 sq ft. So roughly 1.125 blocks per square foot of wall. Always add 5-10% for breakage and cuts.
Exemple Résolu
A block wall 30 ft long and 8 ft high using standard 8x8x16 blocks with 5% waste.
- 01Wall area = 30 × 8 = 240 sq ft
- 02Block face area = (16/12) × (8/12) = 1.333 × 0.667 = 0.889 sq ft
- 03Blocks needed = 240 / 0.889 = 270 blocks
- 04With 5% waste = 270 × 1.05 = 284 blocks
Questions Fréquentes
What size is a standard concrete block?
A standard CMU is 8 inches high × 8 inches deep × 16 inches long (nominal dimensions, which include the mortar joint). Actual dimensions are 7-5/8 × 7-5/8 × 15-5/8 inches.
How many concrete blocks per square foot?
With standard 8×16 inch blocks (nominal), you need approximately 1.125 blocks per square foot of wall area.
How much mortar do I need per block?
Approximately 3 standard bags (80 lb) of mortar mix per 100 blocks, or about 8.5 cubic feet of mortar per 100 blocks.
Apprendre