How to calculate the required number of cinder blocks. Online calculator for calculating building blocks
Online calculator
Presets
Before starting any construction, it is necessary to calculate as accurately as possible the amount of building materials needed for construction. Simple counting is often ineffective due to the specifics of each specific building material. The IzhStroyBlok company offers you to use an online construction calculator that allows you to calculate with the highest possible accuracy, since the calculation formulas already contain the specifics of the materials to be calculated, such as expanded clay concrete, aerated concrete, foam blocks, cinder blocks, bricks.
Application
Online calculator building blocks is designed for an approximate calculation of the blocks needed to build walls for garages, outbuildings, residential buildings, summer cottages, and other premises.
By default, the standard dimensions of expanded clay concrete blocks are 39x19x19 cm. To change the dimensions, you must click on the "Change to your own" button and insert your own values, for example, the dimensions of bricks, foam concrete, gas silicate, ceramic blocks or other building materials.
Rules for using the calculator
In the "Total length of all walls" field, you must specify the perimeter of the proposed structure, for example, if the house is 7 by 8 meters, then indicate 30 (7 + 7 + 8 + 8 = 30). The "Average Wall Height" field specifies the average height of all walls. The thickness of the wall is indicated in one (39 cm), or the floor of the block (19 cm), excluding insulation and cladding! Additionally, the dimensions and number of expected window and door openings are indicated.
All dimensions are indicated in centimeters, except for the length of the walls (meters) and the size of the mortar thickness in the masonry, it is indicated in millimeters!
How to calculate how much cinder block is needed to build a house?
results
In the results obtained, the "total cost of blocks" is indicated approximate price on the expanded clay concrete blocks in Izhevsk of the company "IzhStroyBlok" standard sizes excluding delivery. All results are approximate and may differ from the real ones, due to the specifics of a particular structure.
Affordable price, good performance characteristics, dimensions convenient for accelerated masonry are the main advantages that such a building material as a cinder block has. It has found wide application in the construction of capital residential buildings, garages, utility buildings.
Produce cinder blocks from a special concrete mix and slag, which are various construction and other wastes. They lay out the foundation, partitions, walls. The main advantage of the material is that it can be purchased ready-made or made at home.
Regardless of whether they use blocks of their own or factory production, the developer needs to clearly know how much material is required for one square meter of masonry.
What parameters affect the consumption of cinder block?
The number of cinder blocks for each square meter masonry depends on several components:
- block size;
- wall thickness;
- seam depth.
These parameters directly affect the consumption of building material. If you correctly take into account all the initial data, then it will not be difficult to make the correct calculation.
cinder block dimensions
There are the following types of this building material:
- corpulent full block;
- hollow full block;
- hollow block.
The first two types are produced in sizes 390x190x188, and the last - 390x120x188 and 390x90x188. Dimensions are in millimeters, the first digit indicates the length, the second - the depth, the third - the height of the block.
Seam thickness
Renders direct influence on the consumption of cinder block, but in the direction of decrease.
Calculation of cinder block for a garage calculator
This indicator is not always taken into account, especially when the savings do not have crucial. This approach is only suitable for small buildings. The amount of an extra block, if seams are not taken into account, for large buildings can be quite significant.
The thickness of the seams depends on the material:
- when glue is used, the seam is 2-3mm;
- if a solution is used, the seams are 5-10 mm.
The adhesive composition is not widely used, therefore, an indicator from 0.5 to 1 cm is taken into account. However, it is not taken into account in the formula, but is only subtracted from the obtained value, based on the number of rows.
Masonry thickness
Most important characteristic, which affects exactly how much cinder block will go into masonry in one square meter:
- in the floor of the block or 190 millimeters;
- in one block or 380 millimeters.
Therefore, the thickness of the wall is first determined, and then all the necessary calculations are already made.
Calculation of cinder blocks per 1 square meter of masonry
The calculation is made according to the following algorithm:
- calculate the area of the lateral base, that is, S=length*width;
- find the number of cinder block per 1 square meter, that is, N = 1 / S.
Calculations are made exclusively in the SI system. This means that millimeters, that is, the width and length of the cinder block, are converted into centimeters.
An example of calculating the number of cinder blocks
If a standard cinder block (390x190x188) is used, the calculation is as follows:
- 190 mm wall or block floor. The width and length are converted to centimeters, getting the values 0.188 and 0.39, then the side area is calculated, that is, S=0.188*0.39=0.073. Since the dimensions were converted to centimeters, the resulting value is already calculated in square centimeters, which allows us to proceed to the final calculation, that is, finding N=1/0.073=13.64 blocks. If we take into account the seams, then it turns out that when laying a block in the floor, about 13 pieces of cinder block are required for each square centimeter.
- The wall is 390 mm or in one block. The calculation algorithm is similar to the previous version, but the values, of course, are different. In other words, S=0.188*0.19=0.036, i.e. side area it turns out completely different from the first option, N=1/0.036=27.77, or approximately 27 pieces, if we take into account the thickness masonry mortar. Therefore, the wider the wall, the large quantity blocks to be purchased.
These calculations can be applied to absolutely any structure being built, built from cinder block.
Why calculate the amount of cinder block in one square meter?
This is initial stage calculations are necessary to determine the exact amount of material required for the construction of a particular building. Thus, knowing the consumption per 1 sq. m., it is not difficult to calculate and total costs on the material. If a garage is being built with masonry in the block floor, the wall area of \u200b\u200bwhich is 51 square meters, then you need to purchase 663 cinder blocks. This number will double if the building is built with walls 390 mm thick. In addition, you should always remember that the material should be purchased with a small margin, given the possible marriage or damage to the blocks directly during laying.
How many cinder blocks are needed per house (10 by 10 and 8 by 8)
The main problem in the construction of a private house is the calculation of building materials. In our article, we will deal with the number of cinder blocks per house with the specified parameters of 8 × 8 and 10 × 10 meters. It should be noted that such material as slag concrete is considered one of the cheapest and most effective.
cinder block calculator
It is particularly durable and easy to install. A building made of blocks can be erected much faster than a similar structure made of bricks, which is possible due to the increased dimensions compared to bricks.
The basis for calculating the amount of materials of any house will be a project drawn up in advance, which indicates the thickness and length of the walls, as well as the location of the window and doorways. For a building made of cinder blocks, it is necessary to select such a height of the building that an integer number of rows of masonry is obtained for the construction of the wall. Since one product has overall dimensions of 390 × 190 × 190 millimeters, the height of the structure can be 2.8 or 3 meters (one centimeter goes to the solution). You should also pay attention to the fact that some types of cinder blocks have increased thermal conductivity, so the thickness of the wall should be equal to the length of the block, additional styling heater is recommended.
The number of cinder blocks for the house 8 by 8
To calculate the number of cinder-block products per house, we determine the wall thickness of 39 centimeters and their height - 3 meters. In addition, the building has five windows and one Entrance door, with total area 10 sq meters.
First, let's deal with a building with overall dimensions of 8 × 8 meters and calculate the area bearing walls excluding window and door openings - (8 + 8) × 2 × 3 = 96-10 = 86m2. Now let's define the total building structures 86×0.39 = 33.54 m3. After determining the volume of one block 0.39 × 0.19 × 0.19 \u003d 0.014 m3 per product, you can calculate their total number for the whole house 33.54 / 0.014 \u003d 2395 pieces.
How many cinder blocks are needed for a 10 by 10 house
Now consider the need for materials with overall dimensions of 10 × 10 meters. base values there will be a masonry thickness of 0.39 m, a height of 3 meters and 12 m2 for window and door openings.
To begin with, we calculate the area and volume of the walls (10 + 10) × 2 × 3 = 120 m2, excluding openings 120-12 = 108 m2. From this, the volume of the walls of the building will be the following 108 × 0.39 = 42.12 m3. We determined the volume of one block - this is 0.014 m3, now we will find out how many blocks will be needed for such a house 42.12 / 0.014 \u003d 3008 pieces.
Affordable price, good performance, convenient dimensions for accelerated masonry - these are the main advantages that such a building material as a cinder block has. It has found wide application in the construction of capital residential buildings, garages, utility buildings.
Cinder blocks are produced from a special concrete mixture and slag, which is used as various construction and other waste. They lay out the foundation, partitions, walls. The main advantage of the material is that it can be purchased ready-made or made at home.
Regardless of whether they use blocks of their own or factory production, the developer needs to clearly know how much material is required for one square meter of masonry.
What parameters affect the consumption of cinder block?
The number of cinder blocks per square meter of masonry depends on several components:
- block size;
- wall thickness;
- seam depth.
These parameters directly affect the consumption of building material. If you correctly take into account all the initial data, then it will not be difficult to make the correct calculation.
cinder block dimensions
There are the following types of this building material:
- corpulent full block;
- hollow full block;
- hollow block.
The first two types are produced in sizes 390x190x188, and the last - 390x120x188 and 390x90x188. Dimensions are in millimeters, the first digit indicates the length, the second - the depth, the third - the height of the block.
Seam thickness
It has a direct impact on the consumption of cinder block, but in the direction of reduction. This indicator is not always taken into account, especially when savings are not decisive. This approach is only suitable for small buildings. The amount of an extra block, if seams are not taken into account, for large buildings can be quite significant.
The thickness of the seams depends on the material:
- when glue is used, the seam is 2-3mm;
- if a solution is used, the seams are 5-10 mm.
The adhesive composition is not widely used, therefore, an indicator from 0.5 to 1 cm is taken into account. However, it is not taken into account in the formula, but is only subtracted from the obtained value, based on the number of rows.
Masonry thickness
The most important characteristic, which affects how much cinder block will go into masonry in one square meter:
- in the floor of the block or 190 millimeters;
- in one block or 380 millimeters.
Therefore, the thickness of the wall is first determined, and then all the necessary calculations are already made.
Calculation of cinder blocks per 1 square meter of masonry
The calculation is made according to the following algorithm:
- calculate the area of the lateral base, that is, S=length*width;
- find the number of cinder block per 1 square meter, that is, N = 1 / S.
Calculations are made exclusively in the SI system. This means that millimeters, that is, the width and length of the cinder block, are converted into centimeters.
An example of calculating the number of cinder blocks
If a standard cinder block (390x190x188) is used, the calculation is as follows:
- 190 mm wall or block floor. The width and length are converted to centimeters, getting the values 0.188 and 0.39, then the side area is calculated, that is, S=0.188*0.39=0.073. Since the dimensions were converted to centimeters, the resulting value is already calculated in square centimeters, which allows us to proceed to the final calculation, that is, finding N=1/0.073=13.64 blocks. If we take into account the seams, then it turns out that when laying a block in the floor, about 13 pieces of cinder block are required for each square centimeter.
- The wall is 390 mm or in one block. The calculation algorithm is similar to the previous version, but the values, of course, are different. In other words, S=0.188*0.19=0.036, that is, the side area turns out to be completely different from the first option, N=1/0.036=27.77, or approximately 27 pieces, if we take into account the thickness of the masonry mortar. Therefore, the wider the wall, the more blocks to be purchased.
These calculations can be applied to absolutely any structure being built, built from cinder block.
Why calculate the amount of cinder block in one square meter?
This initial stage of calculation is necessary to determine the exact amount of material required for the construction of a particular building. Thus, knowing the consumption per 1 sq. m., it is not difficult to calculate the total cost of the material. If a garage is being built with masonry in the block floor, the wall area of \u200b\u200bwhich is 51 square meters, then you need to purchase 663 cinder blocks. This number will double if the building is built with walls 390 mm thick. In addition, you should always remember that the material should be purchased with a small margin, given the possible marriage or damage to the blocks directly during laying.
The name of the material was due to its first filler - blast-furnace slag. If earlier only such a filler was used in production, today you can choose a cinder block with a “filling” from the most different materials. Consider the main ones that are used in the production of the block:
- slag;
- crushed stone;
- sand;
- different combinations: brick, concrete, and cement;
- expanded clay. Due to the "swelling" when the clay melts, these fillers show quite good properties thermal conductivity;
- materials obtained after coal combustion: slag and ash;
- perlite is a rock of volcanic origin. Crushed perlite is heated, when water passes into steam, the softened rock swells and becomes larger in volume. The filler is the grains that are obtained as a result;
- sawdust.
It should be noted that the choice of filler for concrete block defines specifications of this material: strength, frost resistance, density. So, to obtain a full-bodied cinder block, sand, pebbles or crushed stone are taken. Due to this, the material becomes heavy and dense, with the properties of high thermal conductivity.
Lightweight concrete mix is made from expanded clay, perlite and slag. From such materials, a cinder block will be lighter and with lower thermal conductivity. An ecological material - sawdust - can increase the heat resistance and provide the unit with fire safety properties.
In this regard, the cinder block is a product that is often used in all areas of construction.
There are two types of cinder block depending on their density:
- hollow - used for the construction of partitions for the house, as well as walls. The type and number of internal cavities affects the basic properties of the material;
- corpulent - used for construction different kind structures. This cinder block is very durable.
Let us consider in more detail the first type of cinder block, which is distinguished by the presence of voids in the material:
- The voidness of the cinder block is 40%. Such a material shows the lowest strength indicators, but it has a high degree of thermal conductivity. Used in the construction of structures where it is used metal carcass. In addition, it is not bad as a heater in combination with the most durable components.
- The void is 30%. Such an indicator of voidness allows us to say that the material conducts heat well. That is why this type of cinder block has found wide application in construction.
Such products are produced with cameras inside round look, rectangular or oval. The first and last are pretty solid. However, cinder blocks having rectangular cavities have ease of installation. They can break even without the use of certain tools.
Characteristics of the cinder block
Cinder block is a popular product that is made from a concrete mixture of a constant composition (water, binder and filler), while using the vibrocompression method. The cinder block retains its shape even after many years, so it is suitable for the construction of residential buildings that must stand for a long time.
Benefits of Blocks
The cinder block is the most practical material. First, they contribute big sizes compared to brick. This increases the speed of construction, and also reduces the consumption during the laying of the mortar, which affects the overall cost of the cinder block structure. Secondly, the practicality of the product is achieved in connection with its main properties - availability and durability. Therefore, cinder block is a leader among modern building materials.
Block Disadvantages
It is very difficult to name the shortcomings of the material. They are so insignificant that because of them it would be foolish to refuse to use a cinder block. For some, the disadvantage is the large size and weight of this product, which causes undeniable difficulties in transporting and laying buildings with a large number of floors. Modern technology in turn, eliminates this alleged shortcoming.
The high thermal conductivity of the material is also considered a disadvantage. However, the thermal conductivity of a concrete block is a property that depends directly on the use of filler. If each brand of material is used in connection with its purpose, all the shortcomings will go away.
cinder block dimensions
On the initial stage construction, the necessary action is to calculate the number of cinder blocks. To do this, you need to know what sizes the material is. Dimensions of the block manufactured in industrial environment the following:
- height - 188 mm;
- width - 190 mm;
- length 390 mm.
As for volume, one unit of cinder block is equivalent to 5 bricks. It has a block and other sizes, although they are not so common: 395x195x195 mm and 400x200x200 mm. If you take on the manufacture of a cinder block outside of industrial production, you can neglect the voidness of the material and make it for yourself, but in no case should you change the standard dimensions.
cinder block calculator
If you need to calculate the number of blocks, use a simple calculation method: multiply the width by the length 190x390 mm. It will turn out somewhere 0, 074 m2. This will be the area of \u200b\u200bthe wide edge of the cinder block, which will be required, for example, to build a wall.
To calculate blocks per m2, we divide the unit by the result that we got in m2 earlier: 1/0, 074. When rounded, we get 14. This number will be the number of blocks that are needed to build 1 m2 of wall. To find out the total required material, you need to multiply the resulting number by the entire area of \u200b\u200bthe future wall.
To simplify your calculations, you can use an electronic calculator.
Novice builders often face the problem of correctly calculating the required amount of material. In order not to be mistaken with the numbers, it is necessary to take into account the dimensions of the material and the future structure, the necessary margin for cutting, debris and other features. Our article is devoted to the intricacies of calculating such a building material as a cinder block.
Pros and cons of the material
The appearance of cinder blocks is directly related to the natural human desire for waste-free production. In the USSR in the post-war years, production developed at a rapid pace. Metallurgical plants literally overgrown with mountains of slag. Then the decision came to use this waste to create building materials.
The slag served as a filler for the cement-sand mixture. The resulting mass was molded into large "bricks". The finished blocks were too heavy - they weighed 25-28 kg. To reduce weight, voids were made in them. Hollow specimens turned out to be a little lighter - from 18 to 23 kg with standard dimensions.
The name cinder blocks is still used today, although not only slag, but also other components are used as fillers. In modern blocks you can find granite sifting or crushed stone, river gravel, broken glass or expanded clay, volcanic mass. The production of cinder blocks is most often done by small businesses. Small private enterprises produce building blocks on vibrating machines, filling cement mixture multiple forms at once. After molding and tamping, the "bricks" gain strength for at least a month.
Cinder blocks are endowed with certain advantages and disadvantages.
- The advantage of block building material, first of all, is its low cost. That is why the material is in great demand.
- This building material has others positive characteristics. For example, blocks do not change their size after laying out. The structure will not shrink, which means that the design calculation will not be adjusted during the construction process.
- The strength and hardness of the "big brick" determine its service life. This is nothing less than 100 years! Durability is not calculated, but tested by time. There are many buildings of the middle of the last century, "firmly standing on their feet." The houses have not squinted or crumbled, only the facades require cosmetic repairs.
- Blocks react poorly to ultraviolet and temperature changes. The material is not edible for rodents and insects.
- Due to the increased size, the construction is proceeding at a rapid pace. Much less masonry mixture is used for laying blocks than, for example, for brick wall similar sizes.
- Behind the cinder block wall, street noises are not heard, because it is able to absorb sounds.
- Finally, with simple equipment and desire, blocks can be made at home, which will further reduce the cost of construction.
The disadvantages of the building material are no less than the advantages.
These include the following characteristics.
- Nondescript appearance.
- The problem of fastening to the walls due to voids in the body of the block.
- The need for cladding to make the structure attractive and protect the building material from the effects of external moisture.
- Fragility. If dropped during work, during transportation or loading, the unit may break.
- High thermal conductivity. Without additional insulation The structure does not retain heat well.
- Wide tolerance limits. Dimensions may differ significantly from the face value.
Dimensions
The sizes of cinder blocks directly depend on their types.
Standard cinder blocks are products with the following parameters, measured in millimeters:
- length - 390;
- width - 190;
- height - 188.
Due to the small difference between width and height, both values are often assumed to be the same, equal to 190 mm.
Hollow and full-bodied products have similar sizes. The first, as lighter ones, are used exclusively for laying walls. The latter can serve as the starting material not only for walls, but also for foundations, columns or other structural elements buildings that carry the most loads.
Slag half-blocks are always hollow. dimensions may differ only in thickness (width). The length is constant and remains equal to 390 mm, height - 188 mm.
Thicker semi-blocks are 120 mm wide, while thinner ones are only 90 mm wide. The latter are sometimes called longitudinal slabs of cinder blocks. Scope of semi-blocks - internal walls, partitions.
Available in the slag family "giant" - building block enlarged in size. Its dimensions are 410x215x190 millimeters.
Calculation
For the construction of any object (house, garage or other outbuildings), information on the number of cinder blocks is required. Extra building material is useless, and a lack can lead to downtime and additional costs for loading, transporting and unloading the cinder block. In addition, different batches, even from the same manufacturer, may differ slightly. What can we say about buying the missing blocks from another supplier!
There will be no problems with the construction of the building due to the lack of basic material if you first calculate the need for cinder blocks with maximum accuracy. Of course, you will have to buy more. First, because you always need a reserve. And secondly, the blocks are not sold by the piece. Manufacturers stack them on pallets and fasten them so that the goods do not break during delivery to the buyer, and it is convenient to load them into vehicles.
If necessary, you can purchase material and by the piece. However, the lack of reliable fastening is fraught with the presence of chips and even complete destruction. In order to calculate the need for building blocks, for example, for a house, you need to know the dimensions of this building.
First of all, you need to remember school curriculum more precisely, the definition of areas and volumes. The task is simple, accessible to everyone and does not require any engineering knowledge.
The number of cinder blocks required can be calculated in two ways.
- By volume. The volume of the walls of the building is determined, the number of bricks in 1 m3 is calculated. Building volume in cubic meters multiplied by the number of blocks in one cube. It turns out required amount cinder bricks for the whole house.
- By area. The area of the walls of the house is calculated. The number of blocks per 1 m2 of masonry is found. The area of the walls of the house is multiplied by the number of pieces of cinder blocks in one square meter.
If you need to calculate the number of building blocks per square meter, two dimensions are taken into account: length (390 mm) and height (188 mm). We translate both values into meters and multiply with each other: 0.39 m x 0.188 m = 0.07332 m2. Now we will find out: how many cinder blocks per square meter. To do this, divide 1 m2 by 0.07332 m2. 1 m2 / 0.07332 m2 = 13.6 pieces.
Similar calculations are performed to determine the amount of building material in one cube. Only here all block sizes are involved - length, width and height. We calculate the volume of one cinder block, taking into account its dimensions not in millimeters, but in meters. We get: 0.39 m x 0.188 m x 0.190 m = 0.0139308 m3. The number of bricks in 1 cube: 1 m3 / 0.0139308 m3 = 71.78 pieces.
Now you need to find the volume or area of all the walls of the house. When calculating these parameters, it is important not to forget to take into account all openings, including door and window openings. Therefore, each construction is preceded by the development of a project, or at least detailed plan with doors, windows, openings for laying various engineering communications.
Consider the calculation of the need for material for the house in a "volumetric" way.
- Let's say the house is planned to be built square, with a length of each wall of 10 meters. The height of a one-story building is 3 meters. The thickness of the outer walls is the thickness of one cinder block, that is, 0.19 m.
- Find the volume of all walls. Let's take two parallel walls equal in length to ten meters. The other two will be shorter in length by the thickness of the walls already taken into account: 10 m - 0.19 m - 0.19 m = 9.62 m. The volume of the first two walls: 2 (number of walls) x 10 m (wall length) x 3 m (wall height) x 0.19 m (wall thickness) = 11.4 m3.
- Let's calculate the volume of two "shortened" walls: 2 (number of walls) x 9.62 m (wall length) x 3 m (wall height) x 0.19 m (wall thickness) = 10.96 m3.
- Total volume: 11.4 m3 + 10.96 m3 = 22.36 m3.
- Suppose that the house has two doorways 2.1 m high and 1.2 m wide, as well as 5 windows with dimensions of 1.2 m x 1.4 m. You need to find the total volume of all openings and subtract it from the previously obtained value.
The developer is always faced with the task of calculating how much cinder block do you need for construction. Help make cinder block calculator on this page. Just enter your details and our cinder block calculator will calculate how much cinder block you need to buy for construction.
How the cinder block calculator works
The starting point of the calculation is the dimensions of the cinder block. standard cinder block has dimensions: 390x190x188mm. We will assume that the area of the side surface of the stone is 0.39 * 0.19 = 0.0741 m2.
The area of openings (windows, doors, gates) must be subtracted from the area of the walls, then we will get our calculated area of \u200b\u200bthe material. We take into account the number of layers of masonry (half a block, a block or one and a half blocks). Dividing the estimated wall area by the area of one cinder block (0.0741m2), we get how much cinder block is needed for construction.
Knowing the perimeter, height and thickness of the walls, as well as the dimensions of the openings in the walls, we can easily calculate how much cinder block is needed for the walls.
Please note that the height of the walls is best calculated based on the number of rows of masonry. Divide the required building height by 0.19m. If you get a fractional value, then slightly increase or decrease the height of the building to optimize material consumption.
The thickness of the solution in the calculation formula is not taken into account. The consumption of cinder block is calculated taking into account a margin of 5% (losses per battle when carried to the place of laying, laying itself, etc.).
In the form of a calculator, the dimensions of each wall or opening are specified separately (they are often different heights, and the shape is not always a strict rectangle). Use the green button with the "+" sign to add the required number of walls and openings.
Enter the dimensions of the building and the cinder block calculator will give you an approximate figure for the required amount.