Online concrete calculator, find out the volume. Calculation of concrete volume for various types of foundations Calculation of reinforced concrete volume calculator
An online calculator will help you quickly find out how many cubes of concrete you will need and calculate the volume. Thanks to a quick calculation, you will find out the number of cubes; you just need to enter the data and thickness of the concrete slab and get the finished result. The calculator calculates cubes of concrete for floor screed.
In order for construction work to proceed efficiently and without delays, it is necessary to provide the required amount of building material. When screeding a floor, you need to know how much concrete is needed to complete the job.
How to calculate the number of cubes of concrete correctly in order to avoid unnecessary costs and the presence of low-quality material? Calculations can be done very simply using an online concrete cubic capacity calculator.
How to calculate the volume of concrete for laying a floor?
Using a concrete volume calculator, you can make the most accurate calculation of the required materials for construction in a few minutes. To do this, you need to enter geometric parameters into the prepared table. the dimensions of the area of the room, using the formula we find out the area m 2 and enter this value. We measure the average thickness of the screed and enter this value into the table.
C is the height of the slab
In this way, the cubic capacity of concrete is calculated using a calculator in a matter of minutes, now you will find out how much concrete mixture you will need to purchase. Please note that the concrete thickness in the calculator table in meters is indicated by default!
Features of using mortar for floor screed
To ensure that the final result of calculating the volume of concrete for construction work on floor screed does not change radically, several factors must be taken into account during such work:
- area of the room where renovation is planned;
- initial amount of floor; the thickness of the concrete pouring layer will depend on this indicator;
- brand of cement and quality of sand.
How to calculate the required amount of concrete manually?
If you want to compare the obtained data with the calculation of concrete cubic capacity using an online calculator, then to do this you need to take data on the area of the room for floor screed and multiply by the desired layer thickness.
Area formula But in fact, not everything is so simple; a complicating circumstance in such a matter will be the determination of the required thickness of the screed, but for different types of buildings it will be different.
The peculiarities lie in the expected load on the floor, for example, in residential premises these figures are up to 5 cm, for the strength of the coating, and in non-residential premises - half as much.
Thus, if the area of the room is 20 m 2, then with a thickness of 5 cm the final figures will be as follows: 20 m 2 * 0.05 m = 1 m 3, this is how much mixture is needed to screed the floor.
What is the best composition for floor screed?
Before calculating the amount of concrete for the screed, you need to decide which brand of mortar to choose. The best option would be a solution marked M 150 or M 200; such a mixture can be obtained from M400 cement, if you mix it with sand in a ratio of 1:3, or two parts.
- room 29 m2;
- screed thickness – 5 cm;
- required volume – 1m3;
- cement will be 0.24 m 3 (4 parts in total);
- sand – 0.75 m3.
Taking into account the weight of one cube of each component unit separately, we obtain the following data: if we take the average figures - 1300 kg for cement and 1625 for sand, then we get 325 and 1220 kg of each component, respectively.
When preparing materials, you need to take into account the shrinkage of the solution, which often gives a result that is 10% less than expected. You need to make an appropriate reserve so that you don’t have to make a new batch separately later.
When calculating the volume of concrete using a calculator or manually, you need to carefully double-check the data, and only then make the final purchase of building materials. And in this situation, it’s not even about money, but about the quality of the work done, how reliable and durable the floor will be.
If you use a calculator to calculate a floor screed, you must first decide what brand of screed to make, how to strengthen it, and how economically you want to approach this matter.
To save concrete, you can add a coarse fraction, such as gravel or slag, to half the floor.
If we talk about the mass of the screed, then you can make it yourself; we use the following proportion: for one part of cement we put two parts of sand and three parts of crushed stone, or screenings. You can also make the composition only from sand and cement; each master has his own methods, taking into account the characteristics of the initial state of the place for laying the floor. Calculate the required amount of sand and cement more quickly.
In order to strengthen the screed, a reinforcing mesh or fiber is used, such material is attached to the base, and the fiber is mixed into the concrete to form a screed.
What tools are used to make the screed?
- for a large amount of mixing you will need a concrete mixer, and when using shovels this process will be long and labor-intensive;
- beacons to ensure an even screed;
- laser and regular level, the more accurately the top point of the floor is determined, the better and more economically the work will be done;
- You will also need trowels, shovels, construction wheelbarrows, buckets, etc.
When laying a cement mixture, the base must be dry and clean, and best of all, special penetrating compounds that will ensure good bonding function with the laying mixture.
There is an option that is more economical and faster. This method is very suitable for apartments and houses where repairs are required as soon as possible.
Conclusion
Now you know how to calculate the cubic capacity of concrete using an online calculator or do it manually using simple mathematical calculations. Wishing you quick and high-quality repairs, be careful and follow safety rules when working with cement mortar!
Liquid concrete is an aqueous solution of viscous consistency from components taken in certain proportions. After curing, it becomes a strong, reliable material, resistant to mechanical stress and natural phenomena.
Dry cement Source tk-stroyresurs.ru
Experienced builders advise making your own concrete mixture rather than buying ready-made ones. To prepare or determine material costs, you need to know exactly how much cement is needed per 1 cubic meter of concrete for the foundation. The calculation of components is carried out using a special system, and a number of factors must be taken into account.
Brand of concrete for the foundation
First of all, it is necessary to determine what brand of concrete is suitable for constructing a foundation for a particular house on a given soil. The foundation must have sufficient strength, rigidity and mobility after the mixture has cured.
Source bg.aviarydecor.com
It is advisable to fill the foundation of a house with concrete that has all the necessary properties:
- M100 or M200 are absolutely not suitable for this purpose. However, some summer residents strengthen lightweight structures using M200. Experts do not recommend taking risks; such a building structure will not be reliable.
- Brands M300, M350 are suitable for foundation construction in all respects. M300 is most suitable in terms of technical characteristics for private construction. M300 allows you to obtain a solution of good quality and is offered at reasonable prices.
- M400 is used for foundations in the construction of industrial buildings and special-purpose facilities.
A house built on a solid foundation will last for many years without destruction of supporting structures or cracks in the walls.
How to find out the amount of cement
Concrete is a building material that contains sand, gravel or crushed stone, cement and water.
Source hype-house.ru
There is a special regulatory document, on the basis of which professional estimators calculate the materials needed to prepare a high-quality mixture. However, in the private construction of low-rise buildings, simplified formulas are used.
The quantitative content of cement in the solution determines the properties and grade of concrete. Even a small deviation from the optimal value affects the quality of the solution.
Arithmetic method
Individuals use a simplified system that allows them to find out how much cement is needed per cubic meter of concrete for a foundation; the calculator greatly simplifies the process. For this purpose, perform the following actions:
- cement, sand and crushed stone are taken for concrete in the ratio 1:3:5, 1+3+5= 9 – 1 m3 of mixture consists of 9 equal parts;
- 1m 3 = 1000000 cm 3;
- 1000000 cm 3 / 9 parts = 111111 cm 3 – the volume of cement required to produce 1 m 3 of concrete;
- specific gravity of cement 3 g/cm 3 ;
- we convert the volume into mass: we multiply the volume with the specific gravity, the mass is 333333 g = 333.333 kg.
Source zabor-mogilev.by
On our website you can find contacts of construction companies that offer house design services. You can communicate directly with representatives by visiting the “Low-Rise Country” exhibition of houses.
In this way we find out how much cement is needed per 1 m3 of concrete, taking into account the error - 333 kg of cement is required. A bag of cement, in standard packaging, weighs 50 kg. Therefore, the number of bags of cement per 1 cubic meter of concrete required is 6.66 or approximately 6.5 pieces.
How accurate is arithmetic?
This scheme makes it possible to almost accurately determine the content of M100 grade material. For other brands, this calculation system is conditionally correct, and the resulting number is only an approximate value. It is recommended to determine the mass of cement with an accuracy of up to 1 kg, crushed stone – up to 5 kg.
When mixing the mixture, you need to know that a 10-liter bucket holds:
- 15-17 kg of cement or crushed stone;
- 14-15 kg of sand.
Source aviarydecor.com
It is known that the higher the grade of concrete (density and strength) that needs to be obtained, the fewer bags of cement will be required.
Approximate tabular data
The approximate consumption of cement per cube of concrete for the foundation, depending on the brand used, is presented in the tables:
- mixture prepared on the basis of M300
| Concrete grade | M250 | M300 |
| 340 | 300 |
- based on M400
| Concrete grade | M300 | M400 |
| Required mass of cement, kg | 350 | 300 |
When the amount of cement of a particular brand in the composition changes, the brand of concrete changes. The values indicated in the table depend on the quality of the soil and the size of the crushed stone material, and therefore may change up or down during calculations.
Does it make sense to use M500 for the foundation?
Using the arithmetic method or tables, it is not difficult to find out, for example, how much M 500 cement is needed per 1 cubic meter of concrete for the foundation. At least 8 bags or 400 kg to obtain M400 mortar, used for the construction of foundations in professional construction.
Source analytspectr.ru
It is not advisable for 1 cubic meter of concrete to contain more than 350 kg of cement. An oversaturated foundation will be subject to severe cracking after the final evaporation of moisture. Therefore, it is not advisable to use the M500 grade for placing concrete under the foundation. This material is intended for other purposes.
Online foundation calculator
To find out the approximate cost of a strip foundation, use the following calculator:
Features of the right choice
Cement is crushed mineral powder. In a concrete mixture, it is the only binding component that holds sand, crushed stone or gravel together.
The grade of material is chosen taking into account the concreting technology. An error leads to excessive consumption of concrete and violation of proportions for other components. A foundation that has the wrong composition will not last long, and after a while the work will have to be repeated.
Source de.linkedin.com
The following parameters are important when choosing cement:
- compressive strength (strength is determined by this parameter);
- presence of impurities;
- grinding quality.
The choice of material is also influenced by the curing speed, hydrophobic properties, resistance to low temperatures, and operational requirements.
Previously, the marking M100-M500 was used, the number showed the strength in kg/cm 2. Since 2003, the rules have changed. For private construction, cement with strength class B32.5 (M300) is popular. It is offered at affordable prices, has the technical characteristics necessary for the foundation, and can withstand pressure of 300 kg/cm 3 .
Video description
More information about old and new markings is described in this video:
Types of cement
Source getmeteo.me
Depending on the proportions of the incoming components, this material is divided into several types:
- Portland;
- slag Portland;
- pozzolanic;
- fast-hardening.
How much water do you need
When calculating the amount of materials per 1 cubic meter of concrete, it is dangerous to make a mistake when calculating the water for the solution under the foundation. Violation of proportions leads to too thick or thin mortar, which is not suitable for strengthening the building.
According to the methods for calculating the water-cement ratio, a ratio of 1:2 is used. For one serving of dry mixture, take half a serving of water. The amount of water affects the consistency and brand of the solution. The more water, the less viscosity of concrete.
For example, using M400 cement, you can prepare concrete of any grade by pouring water in different quantities:
By multiplying the weight of cement (in kg) by the corresponding number in the table, you will find out the amount of water in liters. The table is valid if medium-sized crushed stone is used.
Features of guiding the solution
When building small private houses, the concrete mixture is often prepared independently. The procedure involves the gradual introduction of water into the dry composition, followed by thorough and constant mixing of the solution to prevent hardening. For this purpose, it is recommended to use a concrete mixer. Filling work should be carried out in a short time, until the induced solution has lost the required viscosity.
Component quality requirements:
- Cement fractions from 5 to 20 mm are separated by sifting through a sieve. Dry, loose cement is suitable.
- Sand should not contain unnecessary impurities. After sifting, sand with fractions from 1.5 to 5 mm is isolated.
- Gravel or crushed stone is medium in size, ranging from 8-35 mm.
- Water should not contain an increased amount of unnecessary chemical elements or be heavily polluted.
In a humid environment, cement quickly becomes damp and lumps form. Considering this, purchase it immediately before use. If you have no experience, you should choose medium or large crushed stone. Large stones provide a denser concrete structure and prevent the formation of air bubbles.
Source yastroyu.ru
High-quality pouring of the foundation requires removal of air bubbles or cavities from the concrete mass, which always appear during the pouring process. For this purpose, the concrete mass is compacted using specialized vibration installations for construction.
The clear answer is: is there one?
It is impossible to answer exactly how much cement is needed per 1 cubic meter of concrete for the foundation, or exactly how much concrete will be produced from a bag of cement. It all depends on what kind of concrete should be used for pouring the foundation for a particular house. The choice is influenced by:
- the dimensions of the future house and the building materials used, which determine its weight;
- soil characteristics: groundwater level, freezing depth.
The table below shows the content of the components necessary for laying the most popular brand of concrete - M300 - depending on the degree of mobility of the mixture:
In order to save money, it is recommended to purchase cement of a higher grade than the concrete required. The grade of concrete is always lower than that of cement.
Source pt.decoratex.biz
Conclusion
At first glance, preparing concrete for the foundation is not difficult. However, this is the most critical part of the work when constructing a residential building; errors when pouring the foundation will affect further work and during operation. Although a foundation cement calculator will help you calculate the amount of concrete, these will be inaccurate numbers, and the proportions may be significantly wrong, especially if you have never seen building materials before. In many cases, it is advisable to turn to professional craftsmen.
The foundation is an important part of any structure and at the same time the most expensive. To create a reliable and durable foundation, it is necessary to choose the right building materials, as well as determine their quantity.
Why do you need the cubic capacity of the foundation?
The volume of the supporting base is important to determine for several reasons:
- First, the known volume of the foundation helps to accurately determine the volume of excavation work and the costs associated with this stage.
- Secondly, based on the volume of the foundation, it is not difficult to determine the required amount of concrete mass and building materials that will be required to prepare the solution.
- Thirdly, knowing the volume of the foundation, you can easily calculate the consumption of materials that will be required for formwork, creating a reinforcing frame and other activities.
In construction, when calculating foundation parameters, volume is taken as the basic unit, not mass, since 1 m 3 of concrete mixture of different grades has different weights. To determine the cubic capacity of a complex-shaped foundation, the structure is divided into simpler shapes.
The calculation of the volume of the foundation is carried out according to a certain scheme, which depends on the type of foundation.
Determining the volume of a strip foundation
In general, you can calculate the amount of concrete for pouring a strip base yourself. To do this, you need to know the height, width and length of the tape. If the foundation has the same width and height along its entire length, then you can use a simple geometric formula:
V = S*L.
In this formula, the letter “S” denotes the cross-sectional area of the foundation, which can be calculated by multiplying the width of the foundation by its height. The letter "L" indicates the total length of the concrete strip.
For example, you can consider the following option:
The strip base for a house measuring 10*8 meters has a width of 0.4 meters and a height of 0.8 meters. First, the cross-sectional area of the foundation is determined:
L = (10+8)*2 = 36 meters.
V = 0.32*36 = 11.52 m3.
Consequently, to pour a strip foundation for a house measuring 10*8, about 12 cubic meters of concrete solution are needed.
If the foundation has different widths in individual sections, then the calculation is carried out separately for each section, then the resulting values are summed up.
It is also important to take into account those parts of the foundation that are located under all load-bearing partitions, calculate their volume and add to the overall result.
Independent calculation of the volume of a monolithic slab base
The slab base is a monolithic reinforced concrete structure located over the entire area of the building. Such a foundation is in most cases made in the shape of a rectangle or square. Therefore, the main parameters are also considered to be the length, width and height of the reinforced concrete structure. The volume is calculated using the formula:
V = S*H.
In this formula, the letter “S” denotes the area of the base, and the letter “H” is the height of the slab.
For example, you need to determine the volume of concrete that will be required to pour a monolithic slab measuring 8*8 meters and 0.3 meters high.
First we determine the area of the base.
When constructing any building, it is important to correctly calculate the foundation. Calculate the foundation You can do this with the help of specialists or independently using a foundation calculator. Let's consider the most important points, this includes load calculation, the volume of the foundation pit and tips that need to be taken into account when creating a house foundation project. To calculate the foundation, you can use the foundation calculator.
1. Calculate the weight of the house structure.
An example of calculating the weight of a house structure: You want to build a house with a height of 1 floor, 5 m by 8 m, also an internal wall, the height of floor to ceiling is 3 meters.
Let's substitute the data and calculate the length of the walls: 5+8=13 meters, add the length of the inner wall: 13+5=18 meters. As a result, we get the length of all the walls, then we calculate the area, multiply the length by the height: S = 18 * 3 = 54 m.
We calculate basement floor area, multiply the length by the width: S=5*8=40 m. The attic floor will have the same area.
We calculate roof area, multiply the length of the sheet by the width, for example, a sheet of roofing has a length of 6 meters, and a width of 2 meters, as a result the area of one sheet will be 12 m, in total we will need 4 sheets on each side. In total, you will get 8 roofing sheets with an area of 12 m. The total area of the roofing will be 8 * 12 = 96 m.
2. Calculate the amount of concrete required for the foundation.
To begin the construction of a building, you need to draw up a project for the foundation of a private building, from which you can calculate the required amount of building materials for the construction of the structure. In our case, it is necessary to calculate the amount of concrete to create the foundation. The type of foundation and various parameters serve to calculate the amount of concrete.
3. Calculation of foundation area and weight.
The most important factor is the soil under the foundation; it may not withstand high loads. To avoid this, you need to calculate the total weight of the building, including the foundation.
An example of calculating the weight of a foundation: You want to build a brick building and have selected a strip foundation for it. The foundation goes deep into the ground below the freezing depth and will have a height of 2 meters.
Then we calculate the length of the entire tape, that is, the perimeter: P= (a+b)*2=(5+8)*2=26 m, add the length of the internal wall, 5 meters, and in the end we get the total length of the foundation 31 m.
Next we do volume calculation To do this, you need to multiply the width of the foundation by the length and height, let’s say the width is 50 cm, which means 0.5 cm * 31 m * 2 m = 31 m 2. Reinforced concrete has an area of 2400 kg/m3, now let’s find the weight of the foundation structure: 31m3*2400 kg/m=74 tons 400 kilograms.
The supporting area will be 3100*50=15500 cm2. Now we add the weight of the foundation to the weight of the building and divide it by the supporting area, now you have a load of kilograms per 1 cm 2.
Well, if, according to your calculations, the maximum load exceeded these types of soils, then we change the size of the foundation to increase its supporting area. If you have a strip foundation, then you can increase its supporting area by increasing the width, and if you have a columnar foundation, then increase the size of the column or their number. But remember, this will increase the total weight of the house, so it is recommended to re-calculate.
In concrete, cement is the compound that binds all its components. The technical characteristics of the solution depend on its quantity and quality - strength, frost resistance, water resistance, corrosion resistance. As part of the mixture, the price for it is the highest, so the issue of cement consumption per 1 cubic meter of concrete is acute - too much, the profitability of construction will decrease, cracks will appear after hardening, too little - the required technical and operational characteristics will not be achieved.
What does consumption depend on?
The main requirement for concrete is to achieve the required strength after hardening. Based on this, in accordance with construction standards describing the quality of components, their ratio and technical characteristics are selected. This is done taking into account the strength grade of the composition; the recommended ratio of ingredients is indicated in specialized reference books. To calculate how much cement will be contained in 1 m³ of concrete, the following factors are taken into account:
- brand, density, required setting time;
- plasticity of the solution and its mobility;
- type of sand, fraction, presence of impurities, the proportion of which does not exceed 15%, otherwise this filler is subjected to pre-treatment - sifting or washing;
- fraction, type and other technical characteristics of crushed stone - flakiness, density, contamination, if it exceeds the norm, the crushed stone is cleaned;
- the presence of additional components that improve characteristics - hardeners or plasticizers.
During production, the brand of Portland cement is taken into account. It should be twice the grade of the composition made from it - for the M200 solution, take the M400 composition. The higher the brand, the less it will be needed to prepare the mixture of the required class.
Drawing up proportions
To calculate the amount of cement spent on a cube of concrete, you need to know the brand of the mixture; in addition, the brand of the binder used is also taken into account. The proportional ratio of the components is indicated in special tables. In construction, M400-M500 are more often used, and the proportion is calculated in mass parts.
| Concrete grade | Proportion by mass C/P/Shch |
| 100 | 1/4.6/7 |
| 150 | 1/3.5/5.7 |
| 200 | 1/2.8/4.8 |
| 250 | 1/2.1/3.9 |
| 300 | 1/1.9/3.7 |
| 400 | 1/1.2/2.7 |
| 450 | 1/1.1/2.5 |
| Concrete grade | Proportion by mass C/P/Shch |
| 100 | 1/5.8/8.1 |
| 150 | 1/4.5/6.6 |
| 200 | 1/3.5/5.6 |
| 250 | 1/2.6/4.5 |
| 300 | 1/2.4/4.3 |
| 400 | 1/1.6/3.2 |
| 450 | 1/1.4/2.9 |
This means that to prepare M300 concrete from M400 cement, you will need to take 10 kg of cement, 19 kg of sand, 37 kg of crushed stone. The result will be 66 kg of finished material. The average density of the mixture is 2200 kg/m³, so the mass of the binder component consumed is 2200/66*10≈330 kg. Such calculations have already been compiled into special tables to facilitate the work of designers and builders.
When calculating the amount of solution, take into account that the yield by volume is less than the total volume of all components due to compaction during mixing. The most popular fraction of crushed stone is 20 mm, it provides the required strength and is affordable. The amount of added water required to prepare 1 cube of the mixture is determined during the manufacturing process, since it depends on the moisture content of the sand used and the technical parameters of the mixture.
How much cement is needed for 1 cubic meter of concrete mixture?
If in order to obtain the necessary technical characteristics it is necessary to know the proportions of sand and crushed stone, then in order to calculate construction costs it is necessary to calculate the cost of cement per 1 cubic meter of concrete. This data has been calculated and tabulated.
| Concrete grade | Weight of cement, kg |
| 100 | 166 |
| 150 | 205 |
| 200 | 241 |
| 250 | 313 |
| 300 | 329 |
| 400 | 417 |
| 450 | 469 |
This will help determine the rate of consumption, as well as the quantity after calculating the entire volume of material required for construction. The quantity and cost of fillers are calculated using tables with their proportions for different brands. Similar reference data have been developed for M500; if necessary, this indicator is calculated using figures for the proportions of the components for preparing the mixture.
To deliver the required amount of water, it is taken into account that it depends on the moisture absorption of sand and other components, but on average it is recommended to store up to 200 liters per 1 m³ of concrete. The water must be clean, without salts and organic additives that can reduce the quality even if all proportions are fully observed.
Problems often arise when making solutions. Cement of a lower grade is brought to the site than is required for the manufacture of a composition of a certain strength class. To achieve the desired effect, its amount increases by 15%. 10% more fine-grained sand is added and this will not affect the quality.
Most often, cement is offered in 50 kg paper bags. This is a convenient container that allows you to quickly calculate its volume to complete the planned work. To do this, calculate how many bags of cement are contained in 1 cube of concrete. To obtain this volume, M300 will require 329/50 = 6.58 bags or 6 bags and 29 kg. This value is multiplied by the volume of solution that is poured. If you need to make a 40 m³ monolith from M300, then you will need 40·6.58=263.2≈264 bags or 13.2 tons. In this case, the quality of the mixture will correspond to the declared parameters, subject to the manufacturing technology.
A correctly calculated amount of cement per cubic meter of mixture will allow you to achieve the required technical and operational characteristics. We must not forget about the quality of fillers and water. They must comply with the declared parameters and not contain foreign inclusions or impurities. This will help to pre-calculate the financial component and optimize construction costs. When purchasing, it is better to opt for quality brands 400 or 500, since you will need fewer of them at a similar price.