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Construction work largely depends on the correct preliminary calculation of all the necessary materials. Since a very large number of different types are used in this area, it is not possible to immediately come to the store and say: give me this or that is enough.

Before purchasing materials on the pyramida.kh.ua website, you should first evaluate the entire scope of work and roughly estimate how much to buy. There are a lot of rules on how to correctly count such purchases.

Getting to the calculations

Making calculations is a fairly simple process, but there are certain rules to be aware of when performing them. Each type of material has its own specific methodology, which is tailored to certain conditions.

Today, to facilitate such procedures, you can use special services on the Internet, where you just need to specify your parameters and the calculator will give you the required amount.

But in order to understand how such a procedure occurs, consider the basic rules for calculating some building materials:

  • Concrete is always calculated by the required volume. To do this, you first need to know this parameter. The volume itself is calculated by the amount of rubble.
  • Putty. The consumption of this material is different, but in most cases it is indicated on the packaging. To find out the total amount of material required, multiply the working area by this parameter.

In construction, there are many different materials that are used as decoration. To find out the required number of some of them you need:

  • Tile. When calculating the number of required number of features, you first need to know the area (wall, floor). After that, you need to calculate the area of ​​\u200b\u200bthe material itself (the quadrature of 1 tile) and then divide the general parameter by the last number found. To find out the exact number, you need to round the resulting parameter to the nearest upper number.
  • Wallpaper. The calculation of the required amount of such products is not complicated and roughly boils down to the previous technology, where you need to find out the total area, wall height, length and height of the walls. The height of the ceiling often plays a role, since the length of the roll is not always a multiple of a certain number of strips, which can lead to large residues.

When calculating all building materials, the whole procedure comes down to finding the required amount and calculating them according to the average use for a certain volume, area, etc.

The roof is one of the main elements of the roof, which takes on all the impacts coming from the atmosphere.

The main function is to drain water and disperse the load on the top of the building after snow falls.

High-quality roofing is valued for long-term operation and a pleasant appearance.

Roof calculation online (calculator with drawings) - will help you make a reliable calculation of the amount of roofing, rafters and battens.

In construction, there are several types of coatings, which in turn are further divided into subspecies. The most common building surfaces are flat(sometimes operated and non-operated) and attic(this includes a whole group of roofs:, conical and others). Without a doubt, when it comes to choosing the type of roof, a further definition of the surface material becomes relevant.

The most popular types include:

  • , aluminum seam and other metal roofs;
  • slate coating;
  • roof made from natural materials.

Roofing materials

As part of the truss system includes many construction "spare parts", but the main ones in this wide list are:

  • slopes (inclined planes),
  • crate,
  • rafters,
  • mauerlat bar.

In addition, a gutter, aerator, drainage pipe and others take a certain role in the process of shelter and further functioning of the shelter.

The truss system is represented as a carrier system, which is based on inclined rafter legs, vertical racks, as well as inclined struts. In some cases, it becomes necessary to use rafter beams, which will “tie” the rafter legs. There are hanging and layered rafters. In the first group, trusses with sleepers are separately distinguished.

Roof device

The next layer in the design of the mansard roof is the crate, which is laid over the legs of the truss system. Thus, a certain foundation for the roofing deck appears, and the spatial component of the eaves also expands significantly. Most often, this element is made of either wood or metal.

Mauerlat also adheres to its niche of responsibility. It acts as a support for the rafters along the edges., and lay it on the outer wall around the perimeter. The beam is usually lumber (tobish made of wood), but it is quite reasonable if, in the case of a special metal frame, similar contents will be used to prepare the Mauerlat.

Roof calculation online calculator

How to calculate the roof of a house and how to calculate the material for the roof quickly and without errors? In this one, you can use a specially designed service - a construction calculator for calculating the roof of a private house. The calculator calculates the amount, weight, and more.

Calculator field designations

Specify roofing material:

Select a material from the list -- Slate (corrugated asbestos-cement sheets): Medium profile (11 kg/m2) Slate (corrugated asbestos-cement sheets): Reinforced profile (13 kg/m2) Corrugated cellulose-bitumen sheets (6 kg/m2) Bituminous (soft , flexible) tiles (15 kg/m2) Galvanized sheet (6.5 kg/m2) Sheet steel (8 kg/m2) Ceramic tiles (50 kg/m2) Cement-sand tiles (70 kg/m2) Metal tiles, corrugated board (5 kg/m2) Keramoplast (5.5 kg/m2) Seam roof (6 kg/m2) Polymer-sand tile (25 kg/m2) Ondulin (Euro slate) (4 kg/m2) Composite tile (7 kg/m2) ) Natural slate (40 kg/m2) Specify the weight of 1 square meter of coating (? kg/m2)

kg/m2

Enter the roof parameters (photo above):

Base Width A (cm)

Base length D (cm)

Lift height B (cm)

Length of side overhangs C (cm)

Front and rear overhang length E (cm)

Rafter:

Rafter pitch (cm)

Type of wood for rafters (cm)

Working section of the side rafter (optional) (cm)

Lathing calculation:

Purlin board width (cm)

Lathing board thickness (cm)

Distance between decking boards
F(cm)

Snow load calculation (pictured below):

Choose your region

1 (80/56 kg/m2) 2 (120/84 kg/m2) 3 (180/126 kg/m2) 4 (240/168 kg/m2) 5 (320/224 kg/m2) 6 ​​(400/280 kg/m2) 7 (480/336 kg/m2) 8 (560/392 kg/m2)

Wind load calculation:

Ia I II III IV V VI VII

Height to building ridge

5 m from 5 m to 10 m from 10 m

Terrain type

Open area Closed area Urban areas

Calculation results

Roof pitch: 0 degrees.

The angle of inclination is suitable for this material.

The angle of inclination for this material is desirable to increase!

It is desirable to reduce the angle of inclination for this material!

Roof surface area: 0 m2.

Approximate weight of roofing material: 0 kg.

Number of rolls of insulation material with 10% overlap (1x15 m): 0 rolls.

Rafter:

Load on the truss system: 0 kg/m2.

Rafter Length: 0 cm

Number of rafters: 0 pcs

Lathing:

Number of rows of lathing (for the entire roof): 0 rows.

Uniform distance between the boards of the crate: 0 cm

The number of boards of the crate with a standard length of 6 meters: 0 pcs

Volume of boards of an obreshetka: 0 m 3 .

Approximate weight of the boards of the crate: 0 kg.

Snow load region

Explanation of calculator fields

Loads acting on the roof

It is likely that when it comes to choosing the type of roof and roofing, one should be guided by more than just visual requirements. First of all, it is necessary to pay attention to studying the issue of the load on the hip.

NOTE!

The roof is affected not only by precipitation and their volumes- temperature instability and various causes of physical and mechanical origin also exert serious pressure on the surface.

There are many reasons and sources of influence, but the leading ones are snow and wind. What can we say, if building codes require mandatory calculations for a future canopy. The calculation has a pronounced individuality in view of the differences in the volume of snow cover that falls in a particular region.

The wind load is not as harmless as it might seem at first glance. In some cases, we have to talk about the load due to the weight of one of the elements of the hip. Most often, the crate or roof acts as a weighting agent.

The topical issue of load is faced by those who is going to use the attic space all year round. In this case, large-scale insulation is necessary (slopes, side walls, etc.), which leads to a significant increase in the pressure force on the surface of the walls. When the attic is not planned to be transferred to a living space, then only one floor needs to be insulated.

The load-bearing structure of the eaves can also exert a noticeable load due to its own weight. In this situation, the load indicators are determined taking into account the average density of materials and the design values ​​of the parameters of a constructive and geometric nature.

All of the above factors of influence are not so easy to analyze, but fortunately, all the necessary SNiPs have long been developed, the norms of which can be consulted at any time.

Cover area calculation

Inevitable in any canopy design. If the surface of the house will be displayed in a shed plane, then you are very lucky with the calculations.

In such conditions, measure the length and width of the structure, add up the indicators of conditional overhangs and then multiply the two results one by the other.

When it comes to the roof, then several more positions should be used in the calculation, including the angle of inclination of one or another element. First of all, we recommend dividing all capacious parts of the coating into certain parts (for example, into triangles).

In the case of a gable surface, the area of ​​each inclination should be multiplied individually by the cosine of the oblique angle. The slope angle is a figure taken from the intersection of the slope and the floor. As for measuring the length of one inclined, the mentioned parameter should be fixed at the available distance from the ridge to the edge of the eaves.

Roof area calculation

Therefore, the solution algorithm in all projects that use pitched eaves is similar. Upon completion of the marked actions, in order to find out the area of ​​\u200b\u200bthe house dome, you will need to sum up the results obtained.

At construction warehouses and in related stores, slopes with the shape of an irregular polygon can be sold. In this case, remember the advice that has already sounded in the material - divide the plane into identical geometric shapes and, after completing the calculations, simply add them together.

Calculation of the amount of materials for the roof on the example of metal tiles

The metal tile should begin to be considered from the angle of inclination, which was already mentioned in the previous paragraph. If we talk about extremes, then there are all theoretical grounds for saying about 11-70 degree interval. That's just practice, as you know, makes its own adjustments and they do not always coincide with theory.

Experts claim that 45 degrees is the optimal angle of inclination.

Especially when it comes to the roof of the house, which is located in an area with minimal rainfall, which does not require significant slopes. If snow is a fairly frequent visitor, then 45 degrees will be the best option, but because of the increase in wind pressure, it will be necessary to strengthen the crate and truss system. In addition, the greater the slope, the more material will go to the eaves.

Consider the calculation algorithm using the example of a gable roof:

  1. Let the oblique angle be expressed by the letter A, and ½ of the covered span - B, the height will be H.
  2. We introduce an action to find the tangent, which is solved by dividing H by B. We know the mentioned values, therefore, using the Bradis table, we find the value of the angle of inclination A through the arc tangent (H / B).
  3. It is better to use a calculator that can calculate inverse trigonometric functions to solve such serious actions. Then, multiplying B by the length of the cover, we find the area of ​​\u200b\u200beach inclination.

Regarding material costs, such calculations are already addressed at the final design stage. First you need to calculate the surface area that will be laid and directly the dimensions of the roofing material. Let's take a metal tile as an example.

roof area

So, the parameter of the real width is 1180 mm, the effective one is 1100 mm. Now we turn to calculating the length of the coverage of the house, which we have already talked about. Since we are analyzing a fictitious calculation as an example, let the mentioned indicator be equal to 6 meters.

We divide this number by the effective width and get 5.45. The decision of the action displays the number of sheets needed, and since the number is not an integer, for obvious reasons, we round it up.

Thus, we need 6 sheets of metal tiles for flooring one row along the length of the eaves. We proceed to the calculation of the number of sheets vertically.

To measure the vertical row, the size of the overlap should be taken into account (usually taken as 140-150 mm), the distance between the ridge and the cornice, as well as the length of the cornice overhang.

Let the distance be 4 meters, and the overhang - 30 cm. Having made a simple addition, we get a size of 4.3 meters. Let's take the conditional length of a metal tile sheet as 1 meter. Taking into account the overlap, the effective length of one roofing unit will be 0.85 m.

After that, we divide the result of 4.3 m by the effective length and at the end we get 5.05 sheets. In such a small deviation from a whole number, we advise you to round down.

Calculation of steam and waterproofing

- and it is considered very simple. To do this, you just need to divide the covered area by the same parameter of the roofing deck. For example, we are talking about a gable canopy.

Conventionally, we take a slope length of 5 meters and a width of 4 m. Therefore, the area of ​​\u200b\u200bone unit is 20 square meters. m, and the total figure for two slopes will be 40 square meters. m. Steam and waterproofing material is considered to be in rolls.

Useful video

Video instruction for calculating the roof:

In contact with

The best way to estimate costs quickly

Before starting the pleasant and at the same time exciting procedure of building a future family nest, you need to conduct a financial analysis of the issue and clearly indicate the acceptable level of expenses for creating a residential building. If you have already decided on building materials, then an approximate online calculation of the cost of construction can be made directly on the company's website. The smart calculator will allow you to generate a preliminary estimate online, while it will take into account the area of ​​​​the house, the type of foundation, the material of the walls and roof.

In addition, you can choose one of two options for finishing the facade, installation of heating, electrics, water supply systems, add to the estimate the cost of additional insulation and autonomous sewerage. The country house construction cost calculator will take into account all your wishes and display the approximate cost. Of course, the geolocation of the site, the season of work and the complexity of the project will adjust its cost. Therefore, we recommend that you contact the company manager to clarify the estimate.













Building a house is a responsible and complex process, the nuances of which are known only to professionals. But the cost of building a house is primarily influenced by the amount of building materials used and the size of the building, so it is possible to roughly estimate the cost of construction for the selected project using online calculators.

With the help of a calculator and a project of a house, you can imagine its approximate cost.

Types of house construction calculation

There are several types of calculations and a specific construction calculator is usually created for one of them. To understand what results to expect from calculations, you need to understand what type of calculation is used:

    According to the total area of ​​the house. A very approximate calculation method - you indicate the linear dimensions of the building, the estimated number of floors and the material for the walls, and the calculator gives an estimated cost.

    By project type. A more complex calculation method, which is carried out in several stages - based on architectural, structural and engineering projects. It separately shows the cost of building a "box", finishing work and the price of wiring utilities. The accuracy of calculations depends on the number of templates included in the calculator.

    Foundation calculators. They allow you to roughly imagine the amount of building materials (concrete, reinforcement, formwork boards) that will be required for the work. The accuracy of the calculations also depends on the number of templates included in the calculator.

Foundation online calculator interface

    Universal calculators that allow you to include in the calculations the types of floors and the material from which they are made (blocks, bricks, wooden beams, or even). In some cases, you can even count houses designed for fachwerk technology.

Depending on the templates and formulas included in the construction calculator for calculating the templates, as a result you get a calculation of the cost of building a house as a whole, or part of the work, so that you can choose the best option.

In what cases and how is a construction calculator used

To properly use the online construction calculator, you need to clearly understand its pros and cons for yourself. At the same time, first of all, it is necessary to focus on the shortcomings:

    Lack of flexibility. Any calculator makes calculations solely on the basis of its templates and formulas. If you need to calculate data for which the calculator is not provided, then you will not be able to reconfigure it and you will have to do everything manually.

    Low "transparency" of calculations. Even if the calculator contains exact formulas, the user has no way to check what exactly and how correctly he thinks, since everything is hidden behind user interfaces designed exclusively for entering primary data.

Behind the user interface, the formulas by which the calculations are performed are not visible - only the initial data and the result

Despite such significant disadvantages, various construction calculators are still very popular - this is due to such positive points:

    According to the initial data required by the calculator, one can still imagine the course of calculations and what to look for when choosing a project or communicating with specialists who will perform the work.

    Based on the results issued by the calculator, you can compare the cost of work with different materials or compare the price of houses built using different technologies.

As a result, the main task of the construction calculator is to clearly show the user how approximate calculations are made and what is the difference in the cost of houses built using different technologies.

At the same time, it is not recommended to use a building materials calculator for building a house for any accurate calculations, since it is often unknown by what formulas and with what tolerances calculations are made.

What do construction calculators consider

In order to carry out the most correct calculation of the main building materials for the construction of a building, it is necessary to determine in advance the design of the house to be built. When the configuration of the future cottage is known, then this data can be used for an online calculator to calculate the amount of materials needed.

An example of a finished project of a wooden house

Calculation of materials for the foundation

The foundation accounts for about a third of all construction costs. The arrangement of the foundation is one of the first stages of work and calculations usually begin with it. To calculate the number of building materials, it is proposed to select or manually set the following data:

    type of foundation - strip or pile-grillage (it is impossible to calculate a completely pile foundation online, since too many variables must be taken into account);

    the shape of the foundation is usually rectangular or with additional load-bearing walls;

    linear dimensions - depending on the accuracy of the calculator;

    mortar proportions - brand of concrete;

    thickness, and in some cases the desired length of formwork boards;

    reinforcement type.

After calculations, the calculator gives the volume of future pouring, the amount of reinforcement and wire for knitting, the cubic capacity of formwork boards

Clearly emerging nuances of the calculation can be seen in the example of calculating the amount of mortar for pouring a strip foundation measuring 5x6 m under a small country house with two rooms.

Strip foundation - a concrete base laid along the perimeter of the frame of the house under all its load-bearing walls and transferring the load from the cottage to the ground.

Strip foundation

On our site you can find contacts of construction companies that offer house design services. You can directly communicate with representatives by visiting the exhibition of houses "Low-Rise Country".

When calculating the pour volume, the width of the base (for example, 40 cm) is multiplied by its depth (50 cm). The resulting cross-sectional area is multiplied by the length of the walls (3 by 5 m and 2 by 6 m).

The simplest calculation could look like this: 0.4x0.5x ((6x2) + 5x3)) \u003d 0.4x0.5x27 \u003d 5.4 cubic meters. m solution.

But here there is one nuance that must be taken into account - when the sides of 6 m are filled with concrete, then part of the wall volume of 5 m is “captured”. If you do not pay attention to this moment, you can order more concrete than necessary. In fact, the calculation will be as follows 0.4x0.5x ((6x2) + (4.2x3)) \u003d 0.4x0.5x24.6 \u003d 4.92 cubic meters. m solution.

Correct calculation of the volume of the strip foundation

As you can see, even on a small foundation, the difference is noticeable - an error per half a cube of solution, which is 1.5-2 thousand rubles ...

The nuances of calculating the consumption of bricks and blocks for walls

Since bricks and building blocks have a rectangular shape, the calculation of building a house is performed with approximately the same initial data, so most wall calculators can be used for each of these materials.

To count the number of blocks or bricks, the online construction calculator will request the following data:

    the total length of all walls of the house (perimeter, m);

    area of ​​door and window openings;

    the thickness of the walls of the building (the thickness can be half a block, as well as 1, 1.5 or 2-2.5 blocks);

Masonry width in 2 bricks

    weight and price of one block (kg and rub.);

    the thickness of the mortar in the masonry (cm) - usually this indicator is in the range from 3 to 10 mm;

    the height of the walls in the corners (cm);

    the type and size of future blocks: length, width and height (mm), and some calculators allow you to take into account the voids of the blocks, which is used in a number of calculations.

Building block parameters

Important! In some calculators, the thickness of the masonry joint is not indicated separately. This means that either it is not taken into account at all, or the “format” rule applies, in which the dimensions of a building material unit are increased by 1 cm (by the standard seam thickness).

Based on all these indicators, the total area, mass and cost of masonry is calculated. Approximately the cost of building block (brick) walls will be 1/3 of the cost of building the entire house.

Video description

The video shows an example of manually calculating the number of bricks:

What is pre-calculated during the construction of frame houses

The frame-type house construction calculator allows you to pre-calculate the approximate amount of materials even before contacting the specialists of the selected construction company.

To draw up an estimate, the following parameters are calculated:

    foundation (for the construction of ordinary frame houses, a pile foundation is excellent, and in the case of unstable soil or for a heavier cottage, a tape or slab foundation);

    the amount of material required for insulation - is calculated depending on local climatic conditions;

    roof dimensions - there is a significant difference between a conventional roof and an attic house;

    parameters of engineering networks and other communications - not a single calculator can provide all the nuances;

    the amount of wind and vapor barrier materials;

    exterior and interior decoration of the future building - depending on the selected materials.

For a competent choice of foundation and type of roof, it is necessary to perform a detailed calculation of the specific gravity of walls, ceilings and roofs. Depending on the size of the sheathing material, the dimensions of the building and the roof structure, the builders select a transverse or rack beam for the load-bearing structure of the house.

The basis of any frame house is the upper and lower trim, which also need to be calculated - both in terms of strength and in terms of the volume of building materials used. The cross-sectional area of ​​\u200b\u200bthe beam is usually taken as the basis here.

Video description

An approximate calculation of materials will help to produce an online calculator, as presented in the following video:

Calculation of the amount of finishing materials

To calculate the construction of a house, it is important to determine the amount of finishing material for the walls. One of the most common materials is various types of lining, on the example of which you can consider the nuances of calculations.

The first parameter that affects the price is the type of lining (wooden or plastic), which determines its dimensions.

Wooden lining is a natural material that is durable and has a long service life. The only drawback of this building material is its high susceptibility to the moisture content in the air, because of which it is necessary to include various impregnations, varnishes or paints in the estimate. The dimensions of the lining vary in the following ranges: length - from 210 cm to 600 cm; width - 8, 10, 11, 12, 15 cm; thickness: 1.3cm, 1.6cm, 1.9cm, 2.5cm.

Plastic lining is characterized by an increased service life and absolute moisture resistance, which makes it excellent for finishing the exterior surfaces of the house. For this type of lining, the dimensions will be as follows: length - from 300 cm to 600 cm; width - 10, 12.5 or 15, 20, 25 cm; thickness: 5, 7, 8, 10 mm.

Calculation of the amount of lining on the online calculator

To calculate the required amount of lining, the following data are used:

    number of windows, their height and width;

    number of doors and their dimensions;

    the perimeter of the building and the height of the walls.

Knowing the area of ​​​​the facades of the building and the area of ​​\u200b\u200ba unit of facing material, you can calculate the amount of lining or other type of siding by dividing the first by the second. The same thing happens when calculating the floor coverings inside the house.

A similar building materials calculator will also help you calculate the number of specific elements, for example, cornices, planks (starting or finishing), spotlights, platbands, and more.

Also, when calculating finishing materials for interior work, the volumes and quantities of paint or wallpaper, flooring and plaster are taken into account.

Video description

Video example of calculating the amount of linoleum needed:

The consumption of many of them (for example, primers or paints) is indicated on the label by the manufacturers. Therefore, it is only necessary to know the coverage area (height times width minus the area of ​​windows or doors).

Universal online calculators

To determine the approximate cost of the entire construction, a universal, easy-to-use construction calculator is used. Such a program is designed to perform a preliminary calculation of the price of a house, taking into account the main parameters.

Online calculator for calculating building materials

By choosing a specific construction technology on the construction calculator, you can quickly compare the cost of building a building in different configurations.

When calculating the cost of construction on the online calculator, the following indicators are taken into account:

    foundation type;

    house area;

    number of storeys;

    roof type;

    type of floors (material used for their construction);

    types of building and finishing materials.

In universal calculators, it is possible to enter the dimensions of the building (height, width and length), as well as window and door openings, certain dimensions of each of the rooms, the depth and width of the foundation, the angle of the roof and the type of heating.

An example of an online calculator for calculating the cost of a turnkey house

For example: the construction of an economy option (a one-story cottage with an area of ​​​​up to 80 sq. M) can cost 1 million rubles or more. Basic two-story houses with an area of ​​150 sq. m, will cost at least 2 million rubles. The construction of large and spacious premium-class mansions with a total area of ​​more than 350 square meters will have the highest price. m - from 5 million rubles.

Conclusion

The main purpose of using an online calculator is to save time. The program makes it possible to calculate the approximate cost of building a house quickly and easily. However, it is worth considering that such software implies a considerable error in the calculations. Accordingly, accurate results can only be obtained in a specialized company.

Using an online calculator, it is easier to decide on a suitable project for your future home. The process of calculating the cost of a house is not affected by the human factor, and the application itself is often free and available to everyone. And yet, in order to minimize errors in calculations, it is recommended to contact specialized companies with experienced craftsmen.

The very first thing the owner of the house thinks about is how much the new building will cost, whether there will be enough savings to complete the plan or whether everything will have to be postponed until better times.

True, there are many fears here, and even more fears that are not confirmed by anything. You can calculate the budget for building a house in advance, slowly and very thoroughly.

In this case, everything will be taken into account. Unless it will be impossible to calculate an accidental lightning strike on a construction site or another force majeure event. Although with rational planning, even such things can be foreseen in advance and should not bring confusion to the work on the construction site. We will try to give an answer to how to simply and correctly calculate the price for the implementation of a planned house project in our publication.

Calculating the price of a house

The easiest way to calculate the price of a future home is, having a project or at least a sketch of a future building in hand, contact the specialists of the InnovaStroy construction company. Experts will offer you a free consultation on issues regarding the construction of a house. The price of the house is calculated by the company's specialists based on your needs and capabilities. The calculation of the project itself and the design of the house can also be carried out by the company's specialists.

You can go the other way - look at the company's website for ready-made house designs and ask about the prices that are relevant according to ready-made house designs.In any case, it is better to directly contact a specialist who can clearly give an answer to your question. In particular, he can expertly calculate how much design and construction, decoration, house design or geological surveys will cost. If you want to inspect these calculations and conduct your own analysis of potential construction costs, then listen to our advice.

The calculator is great, but... Now it is quite fashionable to calculate the cost of construction using an online construction calculator. Sometimes such systems are well designed graphically and state the essence of the issue in detail. However, all these are too approximate calculations, which have a large level of error, sometimes reaching 50% or more. The reason is obvious - the construction calculation cannot be carried out according to general ideas and by substituting visually suitable construction elements into the general estimate. This is too rough an estimate. Therefore, such calculators, despite their seeming professionalism, very often sin with calculations that are too approximate and far from reality.

There is one plus in these ways to find out the price of a future home - you can at least see, as they say, the order of numbers. But no more than that, because in addition to the price of building materials, it is also necessary to find out the cost of their delivery, loading and unloading, installation, post-assembly processing. The cost of only transport services can range from 5% to 20%. There are many other factors that are often not taken into account in such calculations. Therefore, the longest and most difficult, but perhaps the most correct option is still working with a finished project. A part of any complete construction project of a house is its estimated part, where the price of all materials is detailed, as well as the cost of their installation and commissioning of the house. Let us consider in more detail how to correctly calculate the cost of construction work.

Foundation price

One of the most expensive jobs in building a house is building a foundation. Installation costs depend on the following factors:

  • climatic conditions of the area;
  • house construction - frame, solid brick or aerated concrete blocks;
  • soil type, soil properties;
  • selected type of foundation.

When you have this data in your hands, then you can accurately calculate both the amount of materials needed for construction and their range. Here are a few indicators that will give you a general idea of ​​\u200b\u200bhow much material you need to spend on foundation work:

  • with a brick foundation wall thickness of 510 mm, the mass of the wall will be 920 kilograms;
  • if it is a hollow brick with a wall thickness of 380 mm, then the weight of the wall will be 450 kg;
  • lightweight concrete panels with a thickness of 250 to 400 mm will weigh 230-550 kg.

On average, both work and materials for building a foundation of various options will cost 20-30% of the cost of building a house, if you do not take into account the interior design in the cost of the house. You can reduce the cost of building a foundation by arranging a foundation on piles. However, a light pile foundation should be for a small house, otherwise you will need to use special equipment. Meanwhile, a pile foundation may be cheaper due to the fact that there is no need to excavate a lot of soil, mix and pour concrete formwork or build a brick foundation wall. Given such a reduction in the cost of a house project, the price of foundation work can even reach minus 40-50%.

If you are building an ordinary concrete strip foundation, then it should be noted that more than 1 cubic meter of rubble stone or brick will be spent per 1 cubic meter of masonry of such a foundation. meters, and cement mortar - 0.4 cubic meters. meters. The installation of pillar foundations for lighter houses with a simple design or built from light wall materials will require a consumption rate of stone or brick at the level of 1-1.2 cubic meters. m per 1 cu. m masonry. Cement-lime mortar is necessary in this case no more than 0.27 cubic meters. m. Separately, you should take into account the cost of installing a basement and waterproofing.

Walls are an important part of the house

Calculation of the price of construction cannot do without calculating the cost of erecting walls. Depending on the materials that can be used in construction - wood, brick, concrete - the price of construction also changes.

There are several practical examples of calculating the cost of building walls:

  • a house made of profiled timber should be calculated so that one degree of winter cold accounts for 0.8 cm of timber;
  • if the house is built from solid bricks, then at an average air temperature in winter not lower than minus 30 degrees Celsius, the wall thickness should be at least 65 cm;
  • the construction of walls from different materials requires different design data, therefore, when calculating wall structures, the height and length of the elements that make up the wall should be taken into account.

There are norms for the consumption of bricks in the construction of walls, for example, with ordinary masonry of a wall with a thickness of 250 mm. If we take into account 1 cubic meter of masonry, then it will require at least 400 full-bodied ceramic bricks, 0.2 cubic meters. m solution. Based on these standards, you can calculate the need for brick and cement, sand, and other components of the masonry.

How much does a roof structure cost

The calculation of the necessary building materials for the roof begins with the exact figure of the roof slope. It can range from 5 to 60 degrees. Depending on this, the consumption of building materials will also be normalized.

For this, a simple formula is used - half the width of the span of the house is multiplied by the relative value. For example, with a slope of 25 degrees and a house width of 8 m, the calculation will be as follows: 4 m times 0.47 \u003d 1.88 m - by this height (1.88 m) the rafters must rise. During the construction of the roof, the overhang of the rafters is usually made, which is from 0.5 m. Accounting for roofing materials is carried out according to the roof area. Each material has its own margin of accuracy and joining. It is small for a slate roof, but the need to calculate the length of each element should be taken into account.

If the length of the roof or its width is greater than required, it will be necessary to cut off half or most of the slate slab and thus the consumption of this roofing material will increase regardless of the roof area. The situation is similar with metal profile structures for roofing. It is easier to calculate tiled roofs or roofs made of soft tiles, other materials that can be cut without sections and supplied for construction. However, it should also be taken into account that soft roofing materials can be supplied in rolled packages of a certain length, which may also entail additional costs compared to the calculated ones.

Engineering and Design

After the "box" is built, you should start building engineering communications. Often, interior decoration of walls and rooms is also done with them.

Typically, interior, engineering and finishing work includes:

  • sewerage and water supply;
  • construction of a heating system, including the arrangement of a "warm floor" system;
  • wiring of electrical networks, installation of engineering electrical appliances. These can be, for example, split air conditioning and ventilation systems;
  • construction of any partitions or design objects
  • installation of internal fences, fixtures, plastering and interior decoration, including draperies, stretching, wallpapering.

It should be attributed to design solutions and elements of landscape design. Is it possible or not to count all the necessary nails, screws, sockets and other trifles? In principle, it is possible, however, this is hardly the primary task of the developer. There is a simple recommendation on how to control the need to install one or another object of electrical systems or water supply and sewerage.

Check the data with the project, calculate the average number of the same sockets or taps. Take into account only large units, as they will make up the largest part of the construction cost. You can safely add 50% of their cost to the estimate for all these materials, and in some cases, for example, when installing a specific bath or equipping an indoor pool with a self-cleaning system, then everything is 100%. This will be a rough, but fairly close to reality, estimated cost construction works.

It should be noted that the cost of unique works, such as the construction of a decorative fountain, can be much more expensive than traditional bricklaying, although in fact it is the same thing. The fact is that such specific types of work are usually taken by narrow specialists, therefore the price of such work can be higher and this is justified.

Three myths of construction cost calculation

There are some important tips that will help you avoid unnecessary risks when calculating the cost of building a house.

In order to make construction as cheap as possible, since savings or cash are not always in the right amount, some developers make three mistakes that can, instead of saving money, cost them significant unexpected expenses. These are the typical mistakes:

  • Hiring non-professional builders who can reduce cost estimates by up to 50-60%. As it turns out, laying certain building materials requires experience, and unprofessional pouring of the foundation or the beginning of laying walls will lead to more disastrous consequences - deformation of walls or ceilings, poor foundation stability. In addition, the consumption of building materials will be much higher, since non-professionals simply do not know how to correctly and on time lay the mortar, rationally lay bricks or do roofing work. Especially a lot of questions on internal and engineering work. As a result, all actions on supposedly "savings" will result in an even larger budget.
  • The price of work without a project or a detailed project is cheaper, and work on construction without an estimate, which can “save” 10-15% of the cost of construction, is better than a full development of project documentation.

We have already explained what unprofessional work with building materials can result in. Approximately, the same will happen when you do not have complete documentation on hand. The finished project of the house with all its necessary components includes detailed plans, including engineering communications, the placement of certain devices, assemblies. The estimate can be specified and drawn up specifically for the house, for certain materials and models of windows, walls, drywall, nails, screws, cranes and similar construction details.

On the one hand, this may seem like excessive and overwhelming detail, and you really can not require such too precise calculations. On the other hand, if you are building a large house, then such details can eventually make up a significant part of the construction budget. In any case, the availability of estimate documentation disciplines both the developer and the builder, since there is a document and a specific technical instruction for construction.

  • You can find out the price of building a house from friends and be guided by it when making decisions.

This is not quite the right solution. If the start of building a house goes according to all the rules and in this case:

  • geodetic works are carried out;
  • the project of the house is drawn up by a competent professional designer;
  • all conditions for the placement of the house, the need or vice versa the absence of the need to build a heavy, powerful foundation, the construction of a certain type of wall or roof, are established based on the results of research;
  • the miscalculation of materials is done in a standardized way, and not by eye, then the results of calculating the cost of construction can differ significantly.

The price of a house is individual, as is the character of a person. In the same area with a difference of hundreds of meters, the composition of the soil can change. The architectural and planning solution may also change. The simplest thing that can significantly increase or decrease the value of a house is the presence or absence of connected communications, including electricity and water. Therefore, an assessment of the price of a building on friendly advice may turn out to be very inaccurate information.

How to count correctly

If you decide to correctly calculate the price of a house, then you should take into account many factors. Self-calculation of the construction price can lead to gross miscalculations. And it's not just that the developer does not always have complete information about the price of materials or the cost of construction work. The fact is that there are many other circumstances affecting the price of construction:

  • seasonality of work performance;
  • payment and its form;
  • materials recommended for construction;
  • discounts offered by the executor of the order;
  • rational construction methods.

We have named only a few additional, but significantly affecting the price of construction, factors. For example, if you decide to finish building a house in the winter, then the construction price will increase, since you will need to pay for more expensive labor and the necessary additives to the solutions, the use of frost-resistant binding materials that are not used in the spring-summer season.

To sum up our research, we can come to the obvious conclusion that construction and its calculation is not an easy task and requires considerable special knowledge or extensive construction experience. The correct calculation will save you money and time, and most importantly, it will give you confidence that you will be able to complete the construction of the house on time and without difficulties.

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