Building block calculator. How many foam blocks are needed to build a house - a step-by-step calculation of the amount of materials Calculate foam concrete blocks

For the construction of houses, various types of block materials with a cellular structure are used, including foam blocks. With a small weight, they are distinguished by an increased volume, provide a long service life of buildings. The construction of a house from foam blocks can be carried out independently without significant cash costs. The thermal insulation properties of the building material contribute to the favorable microclimate of a residential building. Let us dwell in detail on the properties of foam concrete and the specifics of construction.

We plan to use a foam block for the house - characteristics of the building material

Foam concrete blocks are produced using a special technology that ensures uniform distribution of air cells in the concrete mass.

The technology involves mixing the following ingredients with water:

blowing agent;
sand;
cement.

The concentration of air inclusions in finished foam concrete blocks exceeds half of their volume.

Foam blocks are great for building a house

The main performance characteristics of foam concrete:

resistance to compressive loads. The strength of the foam block is marked with a capital letter B and a digital index in the range of 0.75–12.5;
density. It varies depending on the level of porosity of the material, which determines the purpose of the blocks. Makes D 200–D 1200;
integrity during deep freezing. Foam concrete blocks in terms of frost resistance are marked F15–F500;
reduced thermal conductivity. The walls of the foam block building reliably retain heat, helping to maintain a comfortable temperature;
the ability to pass steam. Due to the porous structure of the blocks, a comfortable level of humidity is maintained in the room due to the release of excess moisture.

Cellular building material, depending on the density, is classified into the following types:

structural products. They have a maximum density of more than 1.2 kg / m³, they are used for loaded structures;
thermal insulation products. It has an increased porosity, causing a decrease in density to 0.5 kg / m³, it is used for insulation;
structural and heat-insulating blocks. With a specific weight of up to 0.9 kg / m³, they optimally combine strength with thermal insulation characteristics.

Building a house from foam blocks

The rounded dimensions of the foam blocks are:

length - 30–60 cm;
width - 20–30 cm;
height - 10–30 cm.

A foam concrete house can be built quickly using products with increased dimensions.

Building a house from foam blocks - advantages and disadvantages

When planning to build a house from foam blocks, carefully study the positive aspects and disadvantages of porous building materials. The main advantages of foam block material:

reduced thermal conductivity. It helps to maintain a favorable temperature in the living room, and also reduces heating costs;
small mass of products with increased dimensions. This allows you to independently perform work and significantly reduce the construction cycle;
affordable price of products. The use of inexpensive building materials can significantly reduce the cost of the overall estimate for the construction of a foam concrete building;
incombustibility. The use of foam concrete blocks, resistant to open fire, increases the fire safety of the building;
long period of operation. The porous material does not crack as a result of freezing, retains its integrity for a long time;
ease of machining. Foam concrete is flexible, thanks to which it is easy to make holes and adjust dimensions;

The final design is distinguished by reliability, strength and durability, and the cost of construction will be quite budget

harmlessness of the material for health. There are no harmful ingredients in the composition of foam concrete;
effective noise absorption. The structure of porous concrete prevents the penetration of extraneous sounds into the room;
sufficient strength for the construction of residential buildings. Strength properties allow the construction of foam concrete houses up to 9 m high;
increased surface roughness of foam concrete. Decorative plasters and finishes adhere well to porous blocks.

The walls of the foam block building do not exert an increased load on the foundation, and during the construction process there is no need to use special lifting equipment.

Despite the advantages of the material, foam block structures have weaknesses:

require mandatory cladding in order to protect building materials from moisture absorption;
need to use special glue for foam block masonry, which at a price exceeds the cost of a standard solution;
have an unpresentable appearance, requiring additional decorative finishing of foam concrete.

The disadvantages include increased tolerances for block sizes that require adjustment. Before building a house from a foam block, study the operating experience of similar buildings, and also analyze the characteristics of the cellular material.

Its ability to keep warm makes it possible to use the material for the construction of houses in places with an unstable climate.

Building a house from a foam block - what materials and tools will be required

List of building materials required for construction:

blocks used as the main building material;
special glue, sold in loose form;
reinforcing bars used in the reinforcement process.

Pre-purchased materials should be protected from moisture.

For construction work, various equipment and special tools will be required:

drill with a nozzle for mixing the adhesive mass;
"Bulgarian" for cutting reinforcement and fine-tuning the geometry of block products;
rubber mallet for compacting foam blocks during masonry;
planer for foam concrete, facilitating the alignment of irregularities;
a hacksaw necessary for cutting foam concrete;
spatula with teeth, for applying the composition;
building cord, which is a guideline when laying foam blocks;
level for quality control of work performed;
plumb line to control deviation from the vertical;
capacious container for preparation of the working mixture;
spatula with a flat working part for grouting.

For self-preparation of the foundation mortar, you will also need a concrete mixer.

To cut the foam block, you do not need to use special tools; you can easily cut the material with a hacksaw

Construction of foam block houses - calculations

Before starting construction activities, it is important to correctly perform the calculations:

determine the dimensions and layout of the building;
calculate material requirements.

When determining the size of the house, consider the following points:

land area;
layout option;
total estimated costs.

Calculate the need for foam concrete blocks according to the following algorithm:

Determine the length of the foam block walls by summing their dimensions.
Calculate the area of the walls by multiplying the perimeter by the height.
Subtract the area of the openings from the obtained value.
Divide the result by the side surface area of the product.

We calculate the need for material for a building with dimensions of 6x8 m and a height of 2.8 m, which is planned to be built from blocks 59.8 cm long and 19.8 cm high:

We calculate the area of the walls - (6 + 8 + 6 + 8) x2.8 = 78.4 m2.
Let's determine the area of the door (0.8x2=1.6 m2) and the window (1.4x1.6=2.24 m2).
Let's sum the area of the openings - 1.6 + 2.24 = 3.84 m2.
We calculate the net area - 78.4-3.84 \u003d 74.56 m2.
Let us determine the area of the lateral surface of the blocks - 0.598x0.198 = 0.118 m2.
Let's calculate the need for material - 74.56: 0.118 = 631.8.

Door and window openings must be reinforced

Rounding the resulting value to an integer, we get the need for building materials - 632 blocks. Comparing the cost of purchasing block material for a house with dimensions of 6x8 m with the amount of bricks for building a building with the same dimensions, one can be convinced of the main advantage of the blocks - an affordable price.

Construction of houses from foam blocks - the choice and construction of the foundation

For foam block buildings, various foundations are used. The choice of the optimal option is determined by the following factors:

depth location of aquifers;
freezing level;
soil characteristics;
base load.

Thinking about how to make a house out of foam concrete, many prefer a tape-type foundation. This proven foundation type is best suited for foam block buildings.

Among the advantages of building a house from foam concrete, the following qualities can be distinguished: environmental safety of the material

The construction of the foundation for the foam block structure is carried out according to the following algorithm:

Mark the outline of the building on the construction site.
Remove vegetation, remove fertile soil and plan the area.
Dig a pit 60-80 cm deep, following the contour of the building.
Fill the base of the trench with a 20 cm layer of sand and gravel.
Assemble formwork from boards or boards, fix the structure.
Seal the gaps through which the solution can flow out.
Attach roofing felt to the inside of the formwork for waterproofing.
Cut bars to make reinforcement bars.
Assemble the reinforcement cage and place it inside the formwork.
Prepare concrete grade M400 and higher, pour into the panel structure.
Compact the concrete with a vibrator to release air bubbles.
Lay polyethylene on the surface to prevent moisture from evaporating.
Do not stress the concrete mass for four weeks.
Dismantle the formwork after the final set of hardness.
Lay two rows of bricks, providing ventilation holes.
Place steel mesh to reinforce the plinth.
Apply cement mortar in an even layer.
Lay the second two rows of brickwork, check the horizontal position.
Waterproof the base of the house with bituminous mastic or roofing felt.

If necessary, you can insulate the foundation base. To do this, attach polystyrene foam to the outside of the base, and fill the pit with crushed stone. With an increased concentration of moisture in the soil, it is advisable to lay drainage lines along the perimeter of the foundation.

You can do the work yourself, step by step performing the indicated operations.

Due to the fact that foam concrete is not heavy and voluminous, it is possible to build a building much faster than using other building materials.

The construction of walls from foam concrete is carried out, observing the sequence of operations:

Lay the foam blocks in the corner areas of the base, pull the cord between them.
Lay the base row on the adhesive, checking the horizontal position.
Cut a groove in the upper plane of the bottom row.
Clean it of dust and debris, lay a reinforcing bar with a diameter of 10 mm.
Apply a bonding compound to the surface, ensuring that the groove is completely filled.
Lay 4 levels of foam concrete masonry, following the block installation technology.
Reinforce the foam block masonry at the next level.
Continue the installation of foam blocks, reinforcing them at intervals of 4-5 rows.
Form openings for doors and windows, reinforce them with steel lintels.
Assemble the formwork for the last tier of masonry.
Tie the reinforcing cage with knitting wire, place it in the formwork.
Concrete the armored belt for overlapping, plan the upper plane.

Now that the foam concrete walls have been erected, it remains to build a roof.
Foam block house - building a roof

For the construction of the roof of the house, the following work must be done:

Install rafters.
Perform a crate.
Lay insulating material.
Carry out roof installation.

Overlapping can be made from various building materials, depending on the project and financial capabilities. The complex of measures for the construction of a foam block house is completed by the installation of windows and doors, facade decoration, as well as internal work.

Conclusion

Building a house from a foam block is a responsible task. For its implementation, it is necessary to understand the specifics of the technological process, to study the characteristics of foam concrete. Without skills, it is risky to start construction on your own. It is better to use the services of professionals who will perform the work efficiently and on time.

The calculation of the number of foam blocks required for the construction of a future building begins with the determination of the initial data.

This is the perimeter of the house, the height of the masonry and the thickness of the wall, as well as the dimensions of the foam block.

For example, let's calculate how many foam blocks with a size of 600x300x200 millimeters will be required for a one-story house 10x8x2.7m., where 10m. - length, 8m. - width, and 2.7 m. is the height of the house.

First, we determine the perimeter of the outer walls of the building - 10 + 10 + 8 + 8 = 36 linear meters.

Then we multiply the result by the height - 36 * 2.7 = 97.2 square meters.

Now we count the number of foam blocks, for this we multiply the square meters of the building and the thickness of the wall - 97.2 * 0.3 = 29.16 cubic meters. The outer walls of a year-round home are usually laid no less than three hundred millimeters in thickness.

In total, 29.16 cubic meters of foam blocks are needed to build a house. The volume of one wall foam block is 0.036 cubic meters. In order to calculate how many blocks it is in pieces, you need to divide the total volume by the volume of one block of the appropriate thickness - 29.16 / 0.036 = 810 blocks.

The necessary glue for foam blocks is taken at the rate of 25-30 kilograms per cube of blocks. 29.6 * 30 \u003d 888 kg. You can calculate the consumption of blocks for small partitions in a similar way.

How much does a house made of foam blocks cost

How many foam blocks in a cube

In order to find out the number of foam blocks in one cube, you need to make some calculations.

For example, you need to find out how many blocks of 200x300x600 mm are in one cube. For the convenience of calculations, we translate millimeters into meters and get: 0.2 x 0.3 x 0.6 m and multiply the result by each other.

Number of blocks in a cube length 600 mm		Number of blocks in a cube length 625 mm
Dimensions, mm	pieces per cube		Dimensions, mm	pieces per cube
50x200x600	166,7		50x200x625	160
75x200x600	111,1		75x200x625	106,7
100x200x600	83,3		100x200x625	80
125x200x600	66,7		125x200x625	64
150x200x600	55,6		150x200x625	53,3
175x200x600	47,6		175x200x625	45,7
250x200x600	33,3		250x200x625	32
300x200x600	27,8		300x200x625	26,7
375x200x600	22,2		375x200x625	21,3
400x200x600	20,8		400x200x625	20
500x200x600	16,7		500x200x625	16

Dimensions, mm	pieces per cube		Dimensions, mm	pieces per cube
50x250x600	133,3		50x250x625	128
75x250x600	88,9		75x250x625	85,3
100x250x600	66,7		100x250x625	64
125x250x600	53,3		125x250x625	51,2
150x250x600	44,4		150x250x625	42,7
175x250x600	38,1		175x250x625	36,6
200x250x600	33,3		200x250x625	32
300x250x600	22,2		300x250x625	21,3
375x250x600	17,8		375x250x625	17,1
400x250x600	16,7		400x250x625	16
500x250x600	13,3		500x250x625	12,8

Why foam concrete?

Article about foam blocks

Forum about foam blocks.

Foam blocks price from the manufacturer.

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Building from foam blocks.

Foam blocks reviews.

Gas block calculation for construction

Any construction begins with calculations. Here we will show you how to calculate the consumption of a gas block for a house.

The websites of most construction online stores have special calculators to help calculate the required amount of material. Open one of them, and together we will do the calculations. Calculation of how much gas block is needed for a house, garage or cottage, we will begin with the calculation of gas blocks, which are needed for the construction of external structural walls. For this purpose, we will take into account such parameters as:

The height of the house;
wall thicknesses;
Perimeter of all walls of the building.

What is important to take into account in order to correctly calculate gas blocks for a house?

The volume of wall materials is calculated taking into account the following indicators:

1. Floors of the building. The height of the building from the inside and outside depends on this. Additional difficulties are possible if an attic with a non-standard roof design is planned:

gable;
broken line;
triangular;
pyramidal;
symmetrical;
asymmetric.

In this case, you will need to enter the average height of the walls (H), in meters, into the “quantity calculation” form.

1. Sum the perimeter of the outer walls (L) and the total length of the inner partitions.

2. Wall thickness.

How many aerated concrete blocks are needed for a house of 100 sq.m?

We strongly recommend that you consult with experts about this parameter. It is very important to calculate the thickness in accordance with the norms. This determines such important indicators of the building as the strength of the walls and thermal insulation, the requirements for which vary in different climatic zones. Somewhere the standard block width of 400 mm will not be enough, and somewhere on the contrary, it may even turn out to be redundant.

3. Total opening area (S). This refers to the sum of the areas of door and window openings, measured in m 2.

4. Overall dimensions of one block.

The total cost of building a house depends, among other things, on how accurately this calculation is made of how much gas block is needed per house.

An important advantage of aerated concrete blocks is a wide range of dimensions. Able to withstand high loads, gas blocks of large width (up to 375 mm) are used mainly for external and load-bearing walls of a building. It is quite possible to lay heavy floor slabs on them.

Interior partitions are usually made of gas blocks of smaller thickness. This reduces costs and increases floor space.

How to calculate a gas block: a mechanism?

First, let's decide on the thickness of the walls. Usually it is 200 - 300 mm, or 400 mm, when conditions require the laying of gas blocks of greater thickness. Let's take for our example the average value, a gas block with a thickness of 300 mm., Its full dimensions are 300x200x600 mm.

Now that all the necessary parameters are known, let's proceed to the calculation:

We determine the perimeter of the outer walls: 10x4 \u003d 40 meters.
The area of the walls is the perimeter multiplied by the height: 40 * 3 \u003d 120 m 2.
Let's take the sum of the areas of all openings, for example, equal to 10 m 2. Subtract it from the area of the outer walls and get the real area of the outer walls: 120-10=110 m2.
Next, we need to take into account the number of gas blocks per 1 m 2. The area of one block is: 0.2 * 0.6 = 0.12 m 2. Therefore, in 1m 2 square meter 1: 0.12 = 8.33 blocks.
We calculate the total number of gas blocks required for the construction of external walls: 8.33 * 110 \u003d 916.3 pcs. Those. we need 917 whole blocks
It happens that the gas block is sold not in pieces, but in cubic meters. In this case, we will make an additional calculation. In one block: 0.2 * 0.3 * 0.6 \u003d 0.036 m 3. Then the total volume will be: 0.036 * 917 \u003d 33 m 3.

The thickness of the joints in the laying of aerated concrete blocks is 2-3 mm., We did not take this value into account in our example. Also, experienced builders usually purchase materials with a margin, given the inevitable additional cost of fighting and pruning, for our example, let's take this margin equal to 5%. Next, we need to calculate the number (volume) of gas blocks for internal partitions and walls.

How many gas blocks are needed per house for internal partitions?

Let's take for example that according to the project we have two main load-bearing walls located inside the building, with a total length of 12 m. The load-bearing walls are usually made from blocks of the same size as the external walls, therefore the calculation data are similar. Remember that the height of our walls is 3 m. The area of \u200b\u200bthe walls is 12 * 3 \u003d 36 m 2. Let's make a calculation of the gas block for the walls: 8.33 * 36 = 299.88 (300) blocks.

Now it remains for us to calculate the consumption of the gas block for the construction of internal partitions. Suppose that according to the project, the total length of the partitions is 15 m, respectively, the surface area is 15 * 3 \u003d 45 m 2. The house must have interior doors, which means we must subtract the total area of our internal doorways. Suppose that this figure is 9.60 m 2., based on the fact that there are 6 such doors, the size of each is 2x0.8 m. We calculate the total area of \u200b\u200bthe partitions: 45-9.6 \u003d 35.4 m 2. Overall dimensions in mm of partition gas blocks are 100x250x625 mm. How much an aerated concrete block is needed: 35.4: 0.25: 0.625 \u003d 226.56 (227) aerated concrete blocks.

Total calculation of the number of gas blocks:

External blocks: 300+917=1217 pcs. +5% 1278= pcs.

Partition gas blocks: \u003d 227 pcs. +5% = 239 pcs.

Outdoor blocks: 0.2 * 0.3 * 0.6 * 1278 \u003d 46 m 3.

Partition blocks: 0.1 * 0.25 * 0.65 * 239 = 3.9 m 3.

Well, now about the sad ...

Calculation of gas blocks in the cost of construction

We launch the gas block calculator on the site you like www.kupoll.com.ua, enter our data and make a calculation. If we assume that the price for 1 m 3 is on average 1000 hryvnia, then we get the following picture:

Outdoor blocks: 46*1000=46000 UAH

Partition gas blocks: 3.9 * 1000 = 3900 UAH.

Total: 46000+3900=49900 UAH

Now you can without outside help and confidently calculate how many gas blocks you need for a house or garage:

How many aerated concrete blocks are needed for external and load-bearing walls;
Calculate the number of gas blocks for internal partitions;
Calculate how much money you need.

Accurate and faithful calculations to you, good luck in building your home!

Calculation of the gas block on the wall

For reference: if you wish, using this calculator online, you can calculate not only individual walls and partitions, but the whole house, just add up all the lengths of the walls, and indicate the total height of the house as the height, but a separate calculator is planned for calculating the house from the gas block.

For two or more storey buildings, it is desirable to use a brand of blocks from 500.

Thin partition gas blocks 75mm and 100mm, there are basically only 500, 600 and even higher density.

The weight of the gas block in the calculation is taken from the calculation of the theoretical weight of 1 meter of cubic aerated concrete. The real weight of the blocks is highly dependent on humidity, and it can be increased if the block is fresh, or stored outside in humid weather, and the packaging does not completely cover the entire masonry.

Calculation of the number of 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. A simple calculation is often not effective 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 calculated materials such as expanded clay concrete, aerated concrete, foam blocks, cinder blocks, bricks.

Application

The online calculator of 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.

How many foam blocks are needed to build a house: calculating the number per meter of building area

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!

results

In the results obtained, the “total cost of blocks” indicates the approximate price for expanded clay concrete blocks in Izhevsk of the IzhStroyBlok company of standard sizes, excluding delivery. All results are approximate and may differ from the real ones, due to the specifics of a particular structure.

How much aerated concrete is needed for a house

Now gas blocks and other cellular concrete products can be considered one of the most promising wall materials, so many private developers are turning their attention to them. If aerated concrete is chosen for the construction of a private house, then before erecting the building, it is necessary to create its project, which indicates the main dimensions of the walls, both external and internal, as well as the number and dimensions of windows and doors. At the design stage, the density of the blocks and their main dimensions are determined. It should be noted that the walls of the gas block can be finished with ceramic bricks, which allows you to slightly increase their thickness and thermal insulation properties.

How to calculate the number of gas blocks per house 6 × 8 meters

To calculate the amount of aerated concrete for the construction of a private house, consider a specific example. Let's say we have a one-story house with walls measuring 6 and 8 meters in height of 2.8 meters. The building has an attic room, made in the form of a triangle, 2.5 meters high. Wall laying is carried out using a gas block of a standard size of 60 × 30 × 20 centimeters flat, so that the wall thickness is 30 centimeters.

The cost of building a house from foam blocks

The house has 8 windows and two doors, the total area of openings is 18 m2.

Based on the basic dimensions, we determine the area of \u200b\u200buseful walls (6 + 8) × 2 × 2.8 = 78.4 m 2, excluding openings 78.4-18 = 60.4 m 2. Further, to determine the number of blocks for laying the walls of the first floor, it is necessary to calculate its volume, provided that the wall thickness is 30 centimeters - 60.4 × 0.3 = 18.12 m 3. According to building standards, there are 28 pieces of gas blocks in a cubic meter, so 18.12 × 28 = 507 pieces will be needed to build the walls of the first floor. It should be noted that the amount of material will be somewhat less due to the arrangement of mortar joints and the alignment of masonry at the corners of the building.

Now let's move on to counting the number of blocks for the attic floor. We know that the walls are made in the form of a triangle with a width of 8 meters and a height of 2.5 meters. As you know, the area of an isosceles triangle for our case is 8 × 2.5 / 2 \u003d 10 m 2, for two sides 20 m 2. Now we calculate the volume of building material 20 × 0.3 = 6 m 3, and the number of blocks per attic 6 × 28 = 168 pieces. In this regard, the total number of aerated concrete blocks for laying the main walls will be 507 + 168 = 675 pieces.

We calculated only the number of products for the construction of load-bearing walls, but in any house there are partitions and their volume must also be taken into account. Let's say the total length of all partitions in the building is 15 m, which means that the area of the walls will have the following value 15 × 2.8 = 42 m 2 (we assume that the areas of window openings are subtracted from this indicator).

For the construction of internal partitions, gas blocks of the same size are used, but the products are laid on the edge so that the wall thickness corresponds to 20 centimeters. In this case, the volume of material will be the following 42 × 0.2 = 8.4 m 3, which is 8.4 × 28 = 235 pieces of blocks. In this regard, the total number of products for the whole house is 675 + 235 = 910 pieces.

Foam concrete is a modern and durable material, often used for the construction of private housing. As in the case of bricks, before buying foam blocks, they are carefully calculated. It can be done in two ways. The first is the use of mathematical formulas, the second is the use of special construction calculation calculators. Both of them, as well as detailed instructions for performing calculations, are presented below.

To perform the calculation using the online calculator, you must select the length, width and height of the block. Next, you should choose the type of masonry by analogy with a brick wall. Additionally, you can fill in the “Block price” field to navigate by the total cost of the material.

After selecting the blocks, you will need to fill in the data about the object being built. If an ordinary wall is being erected, then its length, thickness and height in meters are indicated. If you need to calculate the blocks for building a house, then you should measure the length of all walls. After that, the data are summarized and entered in the "Wall length" field.

A preliminary calculation of the amount of foam block will help determine the transport for delivering the material to the facility

At the end, the field “Area of openings” is filled in. To do this, measure the length and width of all openings in the wall or walls of the house that you plan to build. Next, calculate the area of each opening separately. Sum up the results and enter them into the calculator field.

The result will be the number and total cost of blocks. At the same time, keep in mind that these are indicative data without a surcharge of 5-7% for marriage, pruning, etc.

Calculation of foam blocks without a calculator

The calculation of the number of foam blocks for building a house without a calculator can be performed using two methods - with and without taking into account the thickness of the mortar joint. According to standard technology, the thickness of the seam should be at least 5 mm.

As an example, let's calculate how many foam blocks are needed for a house with a length of 10 m and a width of 8 m. The height of the walls will be 3 m with a thickness of 30 cm. The outer walls will have one doorway 2 × 1 m and two window openings 2 × 1.5 m . A 60x30x30 cm block will be used to build the house.

The calculation algorithm is as follows:

Perimeter of outer walls: (10+8)*2=36 m.
The total area of the walls of the house without openings: 36 * 3 = 108 m2.
The total area of window and door openings: 2*1.5+(2*1)2=7 m2.
The area of the walls of the house, taking into account the area of the openings: 108-7 = 111 m2.
The area of the outer surface of one foam block without the thickness of the mortar joint: 0.6 * 0.3 = 0.18 m2.
The area of the outer surface of one foam block, taking into account the thickness of the mortar joint: (0.6 + 0.005) * (0.3 + 0.005) \u003d 0.605 * 0.305 \u003d 0.185 m2.
The number of foam blocks without taking into account the dimensions of the mortar joint: 111 / 0.18 = 617 pcs.
The number of foam blocks, taking into account the dimensions of the mortar joint: 111 / 0.185 = 600 pcs.

As a result, we have a difference between the first and second methods of 17 foam blocks. We recommend using the first method, and laying the excess material for a possible marriage during the delivery and installation of foam blocks. In general, the algorithm described above can be used to calculate blocks for the construction of any structure, especially if it is not possible to use an online calculator. The main thing to consider is the thickness and methods of laying blocks.

What foam blocks are used to build houses

In addition to the dimensions of foam concrete blocks, the following parameters should be taken into account when choosing them: density and hardness. Density indicates how many kilograms a block can support when subjected to a specified weight per unit area.

Preliminary calculations of the foam block can be performed without taking into account the thickness of the mortar joint

The letter “D” is used to mark the density. Most often in private construction, a foam block of the following density is used:

100-300 - the construction of internal partitions. They are used extremely rarely;
400-500 - erection of a second non-bearing wall contour. Used everywhere, tk. has low thermal conductivity;
600-1000 - construction of external load-bearing walls. Standard option for the construction of one- and two-story houses;
1100-1200 - the erection of walls of two- and three-story houses.

Higher density blocks are not used in civil engineering. For the construction of external walls, as a rule, blocks of sizes 60x30x30 cm and 60x30x20 cm are used, and for internal walls - 60x30x10 cm. Hardness is indicated by the letter “B” and shows the resistance of the material to compression, namely, what load the block can withstand when exposed to a square centimeter surfaces.

It is conventionally accepted to distinguish groups of blocks of the following hardness:

0.5-1 units - the construction of internal walls and partitions related to the heat-insulating contour of the house;
2.7-7.5 units - construction of external walls with high thermal insulation qualities with a low coefficient of thermal conductivity;
10-12.5 units - are used only for the construction of load-bearing walls of two- and three-story housing.

When choosing blocks, carefully evaluate their structure. It should be homogeneous without interspersing foreign components. The bubbles should be about the same. In this case, the color of the product must be uniform over the entire area.

To determine the correct geometry of the blocks, it is enough to take 3-5 products from one batch and put them on top of each other. If the difference in size is within 1-2 mm, then blocks from this batch can be safely purchased. In other cases, it is better to purchase another supply.

Before buying blocks, be sure to calculate their number using an online construction calculator with further manual verification. Then you will be completely sure that you will not overpay for material overruns.

Any construction begins with calculations, an important part of which is determining the amount of building material used. The foam block calculator will help make calculations easy and fast, you only need to substitute the initial values into the menu items.

The purpose of the calculator

Manual calculations will take a lot of time, an error may creep in, and if you need to change at least one parameter, then all calculations will have to be done again. In turn, the calculator for calculating foam blocks for building a house does it instantly, the user can change the parameters a hundred times, until he gets an exhaustive vision of his task. In addition, the online calculator gives several important parameters at once, including not only the number of blocks, but their volume, the weight of the glue, which will be useful when buying and transporting materials.

Additional information will be the calculations of the amount of reinforcing mesh and mortar, if it is decided to use it instead of glue. For the mortar, the exact weights of cement, sand and water are also calculated for maximum masonry strength.

Calculator functions

The calculator for building a house from foam blocks contains a number of basic and additional functions for detailed calculations. Additional options are optional.

The entire calculation of the foam block for masonry is drawn up in the form of an understandable and concise document, where the user sees the input parameters and calculation results on one page. For clarity, the information is grouped into blocks.

Main functions

Block dimensions (as a rule, sizes are standard)
Density (the greater the density, the colder and stronger the material.
The thickness of the seam (the thickness of the seam must be made minimal to reduce cold bridges)
Wall thickness (wall thickness for the house should not be less than 30 cm without additional insulation)
Wall area

For all graphs, a set of parameters standard for the foam block is provided. Plus, for block sizes, you can enter your own values, which makes it possible to calculate the number of blocks of any size.

Additional functions

Wall area, including doors, windows, gables
Reinforcing mesh that can be replaced with reinforcement
cement mortar

For the mortar, an indication of the proportions of cement and sand is available, which is necessary for different brands of cement.

Reference

The foam block is a popular modern building material, which is characterized by low cost, ease of processing, low density and low thermal conductivity. A kind of artificial stone, cellular concrete, which is produced by mixing cement mortar with a foaming agent. Due to the availability of technology, there is a semi-handicraft production of foam blocks. This fact requires the buyer to be especially careful when choosing a quality supplier.

Problems with the construction of a country house on their own can begin already at the very first stage - when the building is only being designed. Not only do you need to take into account all the nuances yourself, you will also need to calculate all the costs associated with the purchase of building materials. We will help you with this issue - we will teach you how to calculate the required amount of foam concrete products for the house.

Design stage

That is why you need a quality project that takes into account all the slightest nuances.

First you need to decide on the total area of \u200b\u200bthe building, this is important both at the stage of building the foundation, and when designing the second floor or attic room. In small areas it is better to build narrow multi-storey buildings, enough building 7 by 7 or 8 by 8 m.
The calculation of internal surfaces is just as necessary as the calculation of the bearing surface. Do not forget that in a two-story house, 1-2 load-bearing partitions are required so that the load on the second floor is not so critical for the building.
At the design stage, it is important to immediately determine the number of window and door openings in order to take into account the data obtained for the calculation.

Note! An equally important part is communications, but they do not carry a monetary burden for the purchase of materials, so we will not talk about them.

Self-calculation

Now that you know what you should pay attention to initially, you can move on to a visual example, otherwise you simply won’t be able to calculate how many foam blocks you need per house.

We take as a basis a two-story house with a height of each floor of 3 m, side lengths of 7 by 8 m, the location of the internal walls is repeated, only on the first floor there is one carrier, and on the second everything is made of lightweight blocks. For facade walls, we will use blocks with dimensions of 600x250x400 mm (LxHxW).

For your information! There is a calculator on the Internet - how many foam blocks you need for a house with it is easy to calculate, but it does not take into account the features of your structure. For example, the counting system does not include internal walls and interior partitions.

First of all, it is necessary to determine the total area - 7 + 7 + 8 + 8 = 30 linear meters are occupied by our facade walls.
We add here an internal partition made of foam concrete 8 - 0.8 (the thickness of the two facade walls, since the partition is located between them) = 7.2 + 30 = 37.2 l.m. the total length of the walls of the first floor.
Now we translate everything into square meters, for this we multiply the result by the height - 37.2 x 3 = 111.6 m2.

Note! Although the interior partition will be of a lower height, the minimum margin will not hurt us.

It remains to determine the total area of the first floor in cubes, for this we multiply the squares by the thickness of the walls - 111.6 x 0.4 = 44.64 m3.

We need to find out what volume one building block has - 0.6 x 0.25 x 0.4 (we multiply all sides of the product) = 0.06 m3.
Now you need to divide the total quadrature by the result of one block - 44.64 / 0.06 = 744 pieces.

This result is checked as follows:

We divide 1 square meter by the volume of 1 foam concrete block, as a result we get about 17 pieces.
We multiply this number by the total area - 17 x 44.64 \u003d 758 pieces.

The difference obtained in the calculations is allowed no more than 5%, and this number of blocks goes in reserve.

Including all openings

But that's not all. To calculate how much foam block is needed per house, it is necessary to take into account the area of window and door openings. After all, if we are to save, then it is right to save - so that the costs are as low as possible. The price (cost) of foam blocks for 1 cubic meter is about 900 rubles. How many foam blocks in a cube? It depends on the block sizes.

So, we count the number of windows and doors.
We multiply the number of doors by the opening area - 5 x 2.25 (standard window dimensions 1500x1500) = 11.25 m2.
We add to the result the area of the door (two) - 11.25 + 3.2 = 14.45 m2.
Subtract the result from the total area - 111.6 - 14.45 = 97.15 m2.
We translate into cubic meters - 97.15 x 0.4 \u003d 38.86 m3.
We divide by the volume of one block - 38.86 / 0.06 = 648 pieces.

As you can see, the savings are almost 100 foam concrete blocks, which is about 6 cubic meters, that is, if converted into money, then a little more than 4,000 rubles.

Internal partitions

On the first floor there is a partition 3.2 m long, to which we add the internal walls of the second floor - 3.2 + 7.2 + 3.5 = 13.9 running meters.
The height of the partitions is slightly less than that of the load-bearing walls, depending on the thickness of the ceiling and the floor covering, for example, let's take 2.7 m - 13.9 x 2.7 = 37.53 square meters.
Now we translate into cubic meters - 37.53 x 0.2 (the thickness of the foam block for partitions is 200 mm) = 7.506 m3.

It is necessary to calculate the volume of one foam concrete product for internal walls - 0.6 x 0.3 x 0.2 = 0.036 m3.
We calculate the total number of foam blocks - 7.506 / 0.036 = 209 pieces.

Here you can also save on doorways:

In total, 5 interior doors are obtained - 5 x 1.3 (opening area) = 6.5 m2.
Subtract the result from the total area - 37.53 - 6.5 = 31 m2 (rounded up).
Based on this, we calculate cubic meters - 31 x 0.2 = 6.2 m3.
We divide by the volume of 1 product known to us - 6.2 / 0.036 \u003d 172 pieces.

As you can see, the savings can be about 40 foam concrete blocks, and if you take into account the savings on load-bearing products, you get a decent amount.