Concrete consumption in the manufacture of various

As a rule, calculations of the cost of a concrete solution are contained in the project documentation. However, if you build your house, household structure and other buildings yourself, you will have to do the calculations yourself. From their correctness depends on the cost of concrete work.

How to make calculations for the basics of the house

The amount of concrete costs depends on the type of foundation selected.

Shallow foundation

The similar basis is the monolithic plate which is filled in under the whole house.

In this case, you need to know the area of ​​the building and the thickness of the base.

1. Let's give an example. It is necessary to fill the slab foundation, 10 cm thick (0.1 m) under the house, measuring 9 × 9 m.
2. The plate area is: 9 • 9 = 81 m2.
3. We calculate the fill volume: 81 • 1 = 8.1 m3. In the same way, calculations are made for a concrete screed.

This instruction did not take into account the stiffeners at the bottom of the foundation, which ensure its stability and rigidity.

They intersect and break the base into squares.

1. For a foundation of 9? 9 m, it is necessary to lay ribs every 3 m.
2. Their thickness is equal to the thickness of the plate itself, in our case it is 10 cm.
3. The total number of edges is 6 (3 across and 3 along), the length of each of them is 9 m.
4. Consequently, their total length is 54 m. With a width and height of edges of 0.1 m, their volume is: 54 • 1 • 0.1 = 0.54 m3.

We add both figures and get the result - 8.64 m3 of solution.

Tape base

The rate of concrete consumption per 1m3 of such a foundation is also calculated simply.

For this purpose, it is necessary to know the width, length, depth and height of the ground part of the base.

1. Our example will be the same building with sides of 9 × 9 m. Its perimeter is 9 • 4 = 36 m. Let the base be 40 cm (0.4 m), the depth of laying 1 m, and the ground part 50 cm (0.5 m).
2. In other words, the total height of the base is 1 + 0.5 = 1.5 m.
3. Calculate the volume of the foundation: 36 • 4 • 1.5 = 21.6 m3.

Note! This calculation does not include partitions. If they are in the project, you should summarize the volume of tapes for them and the volume of the main foundation.

Pillar foundation

To determine the cost of concrete for arranging such a foundation, you need to know the number, height and cross section of the supports.

First, the mixture consumption is calculated for 1 column, then the number is multiplied by their number.

1. When calculating the area of ​​a support with a circular cross section, the formula S = 3.14 is applied. • R • The letters mean: S is the required area, and R is the radius of the section.
2. With rectangular pillars, the area is calculated by multiplying their two adjacent sides.
3. When the support area is found, multiply it by the height of the supports and their number. So you will find the amount of concrete you need.

Valve consumption

When pouring a structure with a reinforcement cage, you should also calculate the cost of materials for it.

The framework from rods

To calculate the frame, you just need to measure the entire length of the reinforcement.

The consumption of knitting wire per 1 m3 of concrete is determined as follows.

1. First, the join method is determined. It can be like this: the transverse and longitudinal bars of the lower belt are fixed, then vertical bars are screwed to them. And already to them the transverse and longitudinal reinforcement of the upper belt is fixed.
2. This means that at the intersection points of two horizontal and one vertical rods there will be 2 connections with wire.
3. For ligation of a single point of intersection of the reinforcement, 15 cm of knitting wire are needed. At the same time, it folds twice, therefore, for one compound it takes 30 cm.

Volume reinforcement

Volume reinforcement при помощи фиброволокон используется все шире. В отличие от аналогов из металла, они распределены в массе раствора равномерно, повышают его вяжущие качества и стойкость к расслоению.

Fiber consumption per 1 m3 of concrete is given in the table.

Waterproofing

Deep penetration waterproofing compounds are often used for concrete structures.

Note! For example, Penetron consumption per 1 m3 of concrete is not so great, but it prevents the penetration of moisture through the base. In addition, the composition increases the strength and frost resistance of concrete.

This waterproofing is available in dry form. It consists of special cement, fine ground quartz sand and active chemical additives.

Penetron consumption per 1 m2 of concrete varies from 0.8 to 1.2 kg, which depends on the degree of roughness of the substrate.

Standards applied in production

The norms of consumption of concrete in production are applied, according to the requirements of GOST №14.322 / 83.

They reflect the maximum amount of solution that can be used to produce units of products or work. Making the standard, technologists take into account the useful consumption of material, its losses and waste. Based on them, determined the price of products.

In factories, the desired volume of the mixture for the production of certain products is calculated or graphoanalytical method.

1. When calculating the method used drawings and technical documentation.. Also taken into account the coefficient of consumption of concrete during its compaction.
2. With the graphic-analytical method, the real material costs are compared with the numbers of the protocols.. Next, make graphics that are analyzed by computer programs.

Conclusion

It is extremely important to know the exact amount of mortar costs in the implementation of works, whether it is the consumption of aerated concrete blocks per 1 m2 or a mixture for monolithic structures. On this depends how you organize the construction process.

The video in this article will give you more food for thought.