Calculating the Volume of Concrete in Slab, Beam, Column, Retaining wall, & Footing
Volume is a measure of how much space occupies. Consider a glass filled with water. The volume of water in the glass is the water that occupies the space within the glass.
The same thing applies to concrete. Three dimensions are multiplied to calculate volume, so it is the calculation of three dimensions.
Procedure
The volume of concrete must be worked out first, and then the quantities of the individual ingredients must be calculated.
? Fill a box of length 1metre, width 1metre, depth 1metre with concrete.
? 1 meter x 1 meter x 1 meter = 1 m3 of concrete.
? 25KN of concrete is needed to fill 1m3 of the box, where 1KN = 100Kg.
The formula changes depending on the shape, but the methodology remains the same, namely multiplying the three dimensions to calculate the volume of any shape. Imagine a cylinder that does not have a length and a width. A cylinder's volume is calculated by multiplying its surface area by its height.
Volume of Concrete Calculation
Column
Columns may be rectangular, circular, hexagonal or any other shape. It is calculated by multiplying the surface area by the depth.
Circular Column
Circle radius = 0.25 m.
A circular column's volume is calculated by multiplying its surface area by its height.
A circular column has a volume equal to 3.14 x 0.252 x 3 = 0.58m3.