Wall Area = Length × Height - Opening Area
• Standard brick: 200×100×75mm
• With mortar: 210×110mm per brick
• Bricks per m² ≈ 45.45 pieces
• Mortar = Net Area × 0.015 m³/m²
Example: 10m wall, 3m high, 4m² openings:
Net Area = 26 m², Bricks ≈ 1,182 pieces