Column + Pad Concrete Volume Calculator - Metric

Columns need to be supported by footings. In some cases, this can be the same footings that support your foundation walls, but more often or not, they are on a separate footing, also known as a pad. For round columns, these pads usually are square.

To calculate the volume for a column plus pad, you need the diameter and height of the column plus the length of one of the sides and the depth of the pad.

Column & Pad Concrete Calculator

Calculation

enter the number of columns and pads required
diameter of the column in millimetres
the height of the column(s)
length of one side of the pad in metres
depth of pad (thickness) in millimetres

Results

amount of concrete needed in cubic meters
converted into cubic yards
concrete needed in feet

Formula

column

V = π * D² ÷ 4 * h * n

pad

V = w² * d * n

where V = volume
π = 3.14159
D = diameter
h = height of the column
w = pad length
d = pad thickness
n = number of pads and columns

Example calculation

column diameter = 254 millimetres = 0.254 metres
column height = 1.5 metres
pad size = 0.7 metres x 0.7 metres
thickness of pad = 254 millimetres = 0.254 metres
5 columns and pads

Calculating the volume of the columns using the above formula:

3.14159 * 0.254² ÷  4 * 1.5 * 5

3.14159 * 0.064516 ÷  4 * 1.5 * 5 = 0.380

The columns have a volume of 0.380 cubic metres.

Calculating the volume of the pads;

0.7² * 0.254 * 5

0.49 * 0.254 * 5 = 0.6223

The volume of the five  pads is 0.6 cubic metres.

Adding both results together;

0.380  + 0.6223 = 1 .002

It will take 1 cubic metres of concrete to pour these five columns with pads.

Conversions

To convert cubic metres to cubic yards multiply cubic metres * 1.30795061931439
To convert cubic metres to cubic feet multiply cubic metres * 35.3146667214886

When Ordering Concrete

This concrete calculator will help you in estimating the amount of concrete needed for your project. The amount given as needed, does not include any waste. It is recommended, depending on the job you are doing, to add anywhere from an extra 4% to 10% to your concrete order to make sure you have enough concrete to finish the job. Ask when ordering the concrete. They will be able to give you a good idea of what is needed.

Column + Pad Concrete Volume Calculator - Metric

Column & Pad Concrete Calculator

Amount of concrete needed:

Calculation

Results

Formula

Example calculation

Conversions

When Ordering Concrete

Concrete Volume Calculators

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