Concrete is a composite material made from cement, water, sand, and aggregates. When mixed and poured it hardens into a durable structure. It is used in foundations, slabs, walls, columns, bridges, and roads.
For a slab: length × width × thickness. For a column: π × radius² × depth. Complex shapes like stairs are calculated by combining simpler geometric forms. Results are shown in cubic meters, cubic feet, and cubic yards.
Standard concrete has a density of approximately 2,130 kg/m³. Bags are commonly available in 60 lb and 80 lb sizes. Always order slightly more than estimated to account for waste, spillage, and settling.
Concrete has a working time of 30–90 minutes after mixing. Hot weather accelerates setting; cold weather slows it. Prepare all forms before mixing. For large projects, ready-mix concrete is more consistent than hand-mixing bags.
It calculates the volume and weight of concrete needed for slabs, columns, circular tubes, curb and gutter barriers, and stairs.
For a slab: length x width x thickness. For a column: pi x radius squared x depth. Complex shapes like stairs are calculated by combining simpler geometric forms.
Standard concrete has a density of approximately 2,130 kg/m3. Bags are commonly available in 60 lb and 80 lb sizes, and it is recommended to order slightly more than estimated to account for waste, spillage, and settling.
Results are shown in cubic meters, cubic feet, and cubic yards.
Concrete has a working time of 30-90 minutes after mixing. Hot weather accelerates setting, while cold weather slows it down.