How much does a 20kg bag of concrete cover?
Quick Answer: A single 20kg bag of pre-mixed concrete yields approximately 0.0094 m³ (9.4 litres) of mixed wet concrete. In terms of area, one 20kg bag covers roughly 0.19 m² (2.0 sq ft) at 50mm (2 inches) depth, or 0.094 m² (1.0 sq ft) at 100mm (4 inches) depth. You need approximately 106 bags of …