Calculator of volumes of construction works. Calculation of building materials for building a house. Interpretation of calculation results

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 different 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 250 mm thick. 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 the 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 placing a 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.

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.

Regardless of whether you want to build a house of timber or brick, you definitely need calculation of building materials, which will be used for the foundation at the beginning and finishing at the end, not to mention the roofing.

You are about to build a house. This is a very serious undertaking and, undoubtedly, you have decided to approach it with all responsibility. This means that it must be decided what external and internal walls will be built from, what ceilings and floors will be (this is far from always the same thing), what material will be laid on the roof. If the cottage is made of brick, this does not mean at all that you will not need boards or hardware. Therefore, we begin to compile a list of everything necessary, in order to then perform the calculation of building materials.

foundation calculator

At the heart of everything is the foundation, and therefore we will consider it first of all. There are options here. Most often, in order to save money, a tape type is made.. That is, a ditch is dug strictly along the perimeter of the building, which is filled either with ready-made reinforced concrete blocks with additional cement pouring, or simply with concrete mortar. Therefore, at a minimum, you need sand, gravel and water in certain proportions. For laying blocks in a trench, which are very solid in size, it will be necessary to attract a crane. Less often, a columnar foundation is used, which will save a lot of building materials, even more rarely houses are built on wooden piles, which are separate beams or logs.

The calculation of rafter legs can be performed separately or combined with the calculation of the amount of timber for building a house. In addition, it is quite possible that the project will have metal trusses, which means that it will be necessary to purchase hardware, at least a corner, or pipes with a square or rectangular profile. This will require additional calculations of rolled metal, especially in relation to the stability of the structure to loads. The amount of roof covering is calculated separately based on the area of ​​the roof and its shape, for example, a multi-gable option will require more materials due to the high percentage of waste.

The foundation of any building must be reliable, and if the cottage is built from ordinary brick or gas silicate, we discard the piles immediately. Let us dwell on the tape and columnar versions of the foundation, and without reinforced concrete ingots, so as not to involve technology. Usually, pouring under the house is done in a ratio of 1: 3: 5 or 1: 4: 4 cement, sand and gravel, respectively.. It is much more important to choose the right amount of water; for this, the W / C ratio is used, that is, dividing the volume of water by the mass of cement. You can also use the table of finished W / C results, thanks to which, knowing the amount of cement, it will be easy to calculate how much water is needed:

The volume of the strip foundation is determined by the formula V =SL, Where S is the cross-sectional area of ​​the fill, and L- its length, consisting of the perimeter of the building, summarized with lintels under the internal walls. The columnar foundation is defined in a slightly different way, the formula has the form V =SHn, Where S- sectional area of ​​the support, H is its height, and n- the number of columns. The cross section of a square or rectangular base is determined by the formula S=ab, Where a And b are the lengths of the sides. The round section of the support is calculated as follows: S=πR2, Where R is the radius, and π is a constant equal to 3.14.

The number of blocks that will be needed to build walls can be calculated in several ways. Usually it is known in advance how many units of ordinary brick or gas silicate are in a cubic meter. Now it is enough to find out the volume of the walls, for which we multiply the area of ​​\u200b\u200beach by the thickness and subtract from the result the sum of the areas of window and door openings. True, in this case the result will be slightly overestimated, since we did not take into account the corners. In order for the calculation of building materials to be correct, we determine the error. It is enough to carry out the same calculations for the area of ​​\u200b\u200bthe internal walls and subtract the second result from the first. Now it remains to multiply the result by in one cube, and we get the total amount of materials. You can also use the table:

The number of blocks in 1 m 2 masonry

If you want to build a solid log house or a small bathhouse, you will need to determine the height of the building in the crowns, which will build up the walls row by row. But, first of all, it is recommended to find out how many beams or logs with their dimensions are contained in one cubic meter. If the cross section is large enough, be sure that the number of woodworking products will be only a few units. Let's start by determining the volume of one product, with an eye to the shape of the section.

For a beam, the formula will be simple: V =abl, Where a And b are the sides of the section, and l- lumber length. For a log, the calculation will be different: V =πR2l, Where R is the section radius. If all parameters are taken in meters, then the result will be in cubic meters. When buying, you should do the full calculation, because some sellers tend to reduce the volume to whole numbers if the result is decimals.

We have a formula of the form V =HPb, Where H is the height, and P- perimeter. The total number of bars is calculated by dividing the result obtained by the volume of one product with a rectangular cross section. With a log, it is somewhat more complicated, here you should multiply the number of crowns by the number of walls, including internal ones (typically five-walls), and then by the volume of one rounded lumber. There are usually as many logs in the crown as there are walls in the building. For more complex cases, you will need a building materials calculator.

Every person who at least once in his life has encountered the construction of a private dwelling and other buildings knows how important it is to accurately and correctly prepare a project, calculate materials for building a house, etc. In this case, a number of features, the specifics of the building, the climate, and other nuances should be taken into account. After all, sometimes, even the price of a minor mistake in the construction of a building can be too high.

However, do not despair, even if you do not know all the building nuances, do not remember or do not know how to use algebraic formulas. Our site contains online calculators for calculating the construction of a house, the volume of liquid, the area of ​​\u200b\u200bthe roof, materials for the foundation, etc. All you need is to take a tape measure and measure a few basic parameters, on the basis of which our program will perform a full calculation.

Let's take a quick look at how to use the presented online calculators.

Essential elements:

• The left column contains the main parameters with empty cells where you will need to enter your data.
• For clarity, your main parameters will be indicated on the drawing so that you can better navigate where and what numbers you will need to enter.
• When all the parameters are specified, you press the "Calculate" button and a window will appear in the center of the screen with ready-made results and a dynamic drawing that will strictly correspond to your project and the entered data. By changing the basic parameters, the drawing will automatically adapt to your dimensions.
• You will also be presented with an explanatory part with a static drawing, where each variable and other useful information will be described in detail.
• For complete convenience, the "Save to PDF" and "Print" buttons are provided, which will be located at the top of the page. Thanks to this, you can print an already finished project on a printer or save it on a computer that will always be at your fingertips, which is very convenient.

Now such complex construction work as the calculation of lumber, pouring the foundation, insulation, roofing, calculation of fencing, concrete, reinforcement and many other materials will become a simple and understandable process for you. Another pleasant moment is an approximate calculation of the estimate for the construction of a house. Almost every our online calculator has columns where you can enter the approximate cost of building materials or work. Along with the drawing and basic data, you will receive an approximate price calculation for certain works, which will allow you to properly plan your budget and financial capabilities. Moreover, you will be able to control the workers you hired, because. it is not uncommon for “conscientious” builders to try to get their hands on the purchase of materials.

Important! Despite all the precise calculations and calculations, it must be taken into account that 5-7% of all building materials will go to waste. That is why when purchasing materials, consider the stock.

Each of our calculators for the consumption of building materials and the cost of work already includes all the necessary algebraic and geometric formulas. You just have to measure the main parameters correctly and enter them in the appropriate cells.

We hope that our service will help everyone who plans to build a house or other buildings, both with their own hands and with the help of qualified specialists.

Before starting construction work, it is necessary to determine the amount of materials used. We are talking about a brick, of course, it will not be possible to calculate the exact quantitative value up to one piece, but you will get an approximate volume figure from which you can start.

Design data for construction

Why is it necessary to pre-calculate the number of brick products? It will help to determine the volume and not to buy too much. And for high-quality construction, it is desirable to use blocks from the same batch, because products from different purchases may differ in shades that are obtained with different clay consistency during production. Shades that are different from each other will significantly worsen the appearance.

Required parameters for calculation actions

• For the perimeter, you will need the size of the walls.
• Structure height.
• The type of building material used: single, one and a half or double brick monolith.
• Type of layout to be used for construction.
• Seam thickness. For horizontal, the standard is 12mm, and for vertical - 10mm.

brickwork scheme photo

Depending on the type of monolith and laying, it is possible to compile a table with average building material consumption rates per 1 square meter. These tabular indicators can be used for many ways of laying patterns.

Varieties of layout affect the width of the wall layer. It will depend on how the laying work will be done:

• with a half layout option, the width will be in millimeters - 120;
• for laying in 1 product, it will increase to 250;
• at 1.5, respectively, 380;
• for 2.0 the thickness will be 510;
• with a variant of 2.5, the interlayer is represented as 640;

Calculation sequence

1. Calculate the perimeter of the building. To do this, we summarize the lengths of the outer wall surfaces.
2. We determine the area. Multiply the sum of the walls by the height of the room.
3. According to the list above, we determine the number per 1 m², knowing the dimensions of the clinker for construction and the width of the wall layer.
4. We multiply the found value by the area of ​​\u200b\u200bthe building, and we get the required amount for the entire structure. The resulting figure in the process of calculations is rounded up to a larger one.

Calculation example

Material calculation table

Our future building according to the project has walls of 12 m, 10 m, 12 m, 10 m. The height of the building is 3 m. Laying is done in 1.5 bricks, one and a half blocks are taken for these works.

1. We determine the sum of the lengths, it is equal to 12+10+12+10=42 m.
2. We calculate the area 42 * 3 = 126 m².
3. According to the table, we select the value, taking into account seam joints for laying 1.5 bricks, it is equal to 117.
4. We calculate the number of bricks 126*117=14742 pcs.

For the given parameters of the building, we need 14750 pieces of building material.

IMPORTANT! Do not forget that up to 7% of the purchased product will be defective, in connection with this, the quantity must be purchased taking into account this amendment.

Of course, you can calculate the necessary building materials using calculators that you will be offered on many construction sites. But as you can see, an independent option will not be difficult. And you can use the online assistant to check your own output result.

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