How to calculate the volume of concrete for different types

In this article we will talk about how to calculate the volume of concrete in accordance with the type of structure. The topic of the article is not accidental, since the foundation, floor slabs and framework for individual construction are the most massive structures made using mortars.

Pouring mortar into formwork

The need for accurate calculations

In the photo - large-scale concreting in industrial construction.

Why is it so important to correctly know the volume of the required solution, because if there is not enough material, it will be possible to make more? In fact, the maximum strength and durability of monolithic structures is ensured only if the solution is supplied to the formwork for concrete products without long downtime.

Avoid downtime that can lead to the separation of concrete, you can know the exact amount of the mixture, which will be required for those or other construction work.

Actual calculation formulas

In the photo - installation for the preparation of mortars in limited quantities

At the moment there are many ways to carry out calculations, for example, you can use a calculator of the volume of concrete. But the online calculator at the most crucial moment may not be available, and therefore consider those formulas that can be implemented in practice at any time and under any circumstances.

It is no secret that there are several varieties of foundations laid at a particular depth before the start of the main construction works. Depending on the configuration of these structures, their size and, as a result, the volume of the solution that will be required differs.

Important: When making calculations, it will be necessary to take into account a number of different factors, including the chosen structure of the structure, the conditions under which the construction will be carried out, the temperature and humidity characteristics of the air and soil, the depth of the groundwater, etc.

Formula for the bases of the column type

On the photo - formwork for the column (pile) foundation

So, how to calculate the volume of concrete? To do this, measure the height of the structure to find out the area and multiply these figures. But the approach to calculations in accordance with the formula V = S * H ​​is relevant only to simple structures, whereas for calculating the volume in relation to complex structures, a different approach will be required.

The method of calculation for the bases of the column type with round piles is as follows:

  • Calculate the base area of ​​each pillar, we do it according to the formula S = 3.14 * r ?, where r is the radius of each individual pile;
  • Next, multiply the area parameters by the estimated pile height and get the volume;
  • Then the resulting volume is multiplied by the number of piles.which will be applied according to the project.

Important: no matter how correctly calculations are made, you need to order the solution by 5-10% more than the calculated amount.

Calculations for slab type bases

On the photo - slab base formwork

Now we will consider how to calculate the volume in m3 of concrete for slab foundations.

The instruction in this case is simple, since such a foundation is a solid construction.

  • To begin with, we divide the planned perimeter of the foundation into rectangles. This must be done if the base form is complex. If the configuration is simple and is a rectangle or a square, we will know the area by multiplying the length by the width.
  • Next we determine the depth of the bookmark and multiply this number by the resulting area..

Important: As with the columnar base, concrete must be ordered with a small margin. The fact is that according to the project, the depth of the laying is the same over the entire area, but in practice this value may be different.

Calculation of the volume of material for the strip foundation

On the photo - tape formwork

Belt concrete foundation today is the most popular type of base, as it is characterized by sufficient strength and durability. In addition, choosing this type of base can save the solution, as it will not be poured around the entire perimeter of the object, but only under the bearing walls and partitions.

The calculation of the volume of concrete in this case does not constitute anything complicated and is performed as follows:

  • We measure the estimated width and total length of the tape. The resulting parameters are multiplied and we obtain the area of ​​the base.
  • Then we determine how much the foundation will be buried, and multiply this number by the area and get the nominal volume of the solution, which is necessary for pouring into the formwork.

Important: If the depth of the base for the bearing walls and under the partitions is assumed to be different, then the area of ​​the walls and partitions should be considered separately and separately multiplied by the corresponding depth value.

Consider the amount of material for floor slabs

The framework of the walls and floor slabs

Let's try to calculate the amount of concrete for the device floor slabs. Unlike factory-type slabs, structures made by hand do not have through cavities, but are a solid structure. Therefore, we use the formula V = S * H, according to which the area must be multiplied by the height of the structure.

Since, unlike factory analogues, self-produced slabs do not have cavities, their weight can be impressive, and therefore care must be taken to relieve concrete in a timely manner.

Porous or cellular concrete can be used on objects with a low load on the floor. An excellent solution for the arrangement of low-rise housing facilities has become expanded clay concrete, which is several times lighter than heavy dense solutions.

Calculation of materials for the construction of walls

The price of construction is largely determined by the cost of the materials used and that is why it is so important to know in advance how much of what will be used for the construction of the walls.

As a rule, walls entirely from concrete are not cast, but a monolithic frame is made in the form of columns at the corners and horizontal crossbars. Wall blocks, bricks or other masonry materials are laid in the cavity of the frame.

In order to calculate the volume of the frame, it is necessary to draw the outline of the structure as a whole and break it into separate columns and crossbars. Now we have to calculate the volume for each individual item, which will be an order of magnitude easier. To do this, we calculate the cross-sectional area of ​​the columns and crossbars and multiply them by the height.


So, you know the instructions for calculating the amount of mortar for the device of various structural elements in a residential building. These skills can be applied in practice and thus avoid over-expenditure of expensive concrete.

You can find more useful information by watching the video in this article.

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