The calculation of the required amount of Foundation for concrete is carried out using simple formulas known from a school course of geometry for parallelepiped:
Volume = Width * Height * Length
Volume = Area* Height
If the width of the Foundation in the upper part differs from the width of the base, use the following formula for the trapezoid:
Volume = (Width1+Ширина2)/2 * Height * Length
Dimensions to calculate the cubic capacity of the Foundation should take the actual mounted on the mold. Also take into account the presence of stiffening ribs, if they are described in the project, and other elements that can influence the change of the volume of the poured concrete.

Calculation of strip Foundation

There are a few things that are important to consider in the calculations. Strip foundations are not always rectangular in shape, may contain various protrusions or recesses, in addition to the main perimeter are often spinoffs of the Foundation for interior walls and bridges. Some parts of the Foundation can vary in width for extra amplification. Should be divided the Foundation into groups with the same width between the inner walls of the formwork. The volume is calculated as the sum of the volumes of each of the groups.

To determine the length of Foundation is not used for internal or external size, and the length of the perimeter of the Foundation at the middle line between the walls of the formwork. This avoids unnecessary calculations of the volume in the presence of the turns of the tape Foundation. The same applies to the Foundation for inner walls.

Calculation of slab Foundation

This type of Foundation is formed in the form of a solid reinforced concrete slab under the entire building. The calculation in this case is very simple and runs according to the formula:
Volume = the area of the basement * basement Height of
Separately calculated the capacity of the stiffeners, if required, and can be combined with the main volume.
If the design of the Foundation provided for the formation of the technological voids or holes, their total amount is subtracted from the total volume.

The calculation of the cubic capacity of the piles

Calculates the volume of a single pile according to the formula:
Volume = Area of base * Height
Order best received the capacity to increase by 15%, in case if there are delays in casting or show flaws in the formwork.

In the case of the broader the base, the volume is calculated separately for the base and for the top, and after they are added. The result calculated for one pile multiplied by the number of piles in the Foundation.