11-06-2015

If you are going to make repairs in the toilet with your own hands and use tiles at the same time, you will need to solve many important issues. First of all, it will be necessary to decide on the type and design of the coating, and then correctly. This stage should be taken with all responsibility so as not to end up with unfinished walls and not spend extra money on unnecessary material.

Before starting repairs, it is necessary to decide on the design of the room and calculate the necessary materials.

Preparation for calculation

• roulette;
• calculator;
• pen and paper.

Take a tape measure and measure the width and length of the toilet. Add up the values ​​obtained and multiply the sum by 2. All measurements must be taken in meters. For example, you need to calculate the tiles for a toilet with a length of 2 m and a width of 1.5 m. Using the above formula, you will determine that in this case the perimeter of the room will be 7 m.

Such a simple calculation of toilet tiles also allows you to determine the required number of friezes and borders, if their use is provided for by the design project you have chosen. To do this, translate the previously calculated perimeter of the toilet into centimeters and divide by the length of one curb. The resulting value is the number of borders that will need to be purchased for cladding. Add a few spares.

In practice, it looks like this. As an example, the same toilet with a perimeter of 7 m is considered, i.e. 700 cm. Subtract the width of the door from this perimeter (usually about 80 cm), and you will get a value equal to 620 cm. .e. 25 pieces.

When performing a calculation, always round to the nearest whole number.

Otherwise, you simply do not have enough of one product.

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Instructions for calculating floor tiles

To accurately calculate the number of tiles needed, you need to divide the floor area by the area of ​​\u200b\u200bone tile.

Now you need to calculate the tiles for finishing the floor. It's very simple. All you need to do is calculate the surface area. To do this, take a tape measure and measure the width and length of the floor. In this example, the surface area will be 2x1.5=3 m². Thus, you will need to purchase an amount of facing material that would be enough to cover 3 m² of surface. Usually finishing material is sold in packages, each of which is enough to decorate 1 m², so it will not be difficult for you.

Experts say that piece-by-piece calculation of tiles is more accurate. To perform such a calculation, you first need to determine the area of ​​\u200b\u200bone product. For example, if you are going to use a square tile with a side of 50 cm for finishing the floor, then the area of ​​\u200b\u200bone such product will be 0.25 m². Thus, for a floor covering of 3 m², you will need to buy 3 / 0.25 = 12 tiles. Buy 3-4 pieces more for cutting, possible damage during operation, etc.

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The number of tiles for lining the walls of the toilet should be bought 10-15% more.

The calculation of tiles for wall cladding is also quite simple and understandable. It is most easily performed if the walls of the bathroom are lined with material of the same color and the same size. In this case, you will need to find out the total area of ​​\u200b\u200bthe room. To do this, multiply the previously calculated perimeter by the height of the bathroom, and then subtract the area of ​​​​the doorway from it. In this example, the perimeter of the toilet is 7 m. The ceiling is 2.5 m high. A door 80 cm wide and 2 m high was installed. As a result, the total area of ​​​​the room will be: 7x2.5 - 2x0.8 \u003d 15.9 m².

After that, you will need to determine the area of ​​​​one ceramic product. In this example, 60x30 cm tiles will be used for wall cladding. Thus, the area of ​​\u200b\u200bone product is 0.18 m². To determine the required amount of material for cladding, you need to take the total area of ​​\u200b\u200bthe room and divide it by the area of ​​\u200b\u200b1 product. In this example, you will need to use: 15.9 / 0.18 = 88.3 tiles. That is, you will have to purchase 89 pieces.

To all these values, be sure to add about 10-15% in reserve. If you lay the cladding in a direct way, then buy 10% more material. If the lining is carried out diagonally or by other complex methods, the calculated value should be increased by 15%.

Periodically, we need to know the area and volume of the room. This data may be needed when designing heating and ventilation, when purchasing building materials, and in many other situations. It is also periodically required to know the area of ​​\u200b\u200bthe walls. All these data are calculated easily, but first you have to work with a tape measure - measure all the required dimensions. How to calculate the area of ​​\u200b\u200bthe room and walls, the volume of the room and will be discussed further.

Room area in square meters

• Roulette. Better - with a latch, but a regular one will do.
• Paper and pencil or pen.
• Calculator (or count in a column or in your head).

A set of tools is simple, there is in every household. It is easier to measure with an assistant, but you can do it yourself.

First you need to measure the length of the walls. It is desirable to do this along the walls, but if they are all full of heavy furniture, you can take measurements in the middle. Only in this case, make sure that the tape measure lies along the walls, and not obliquely - the measurement error will be less.

Rectangular room

If the room is of the correct shape, without protruding parts, it is easy to calculate the area of ​​\u200b\u200bthe room. Measure the length and width, write it down on a piece of paper. Write the numbers in meters, put centimeters after the decimal point. For example, length 4.35 m (430 cm), width 3.25 m (325 cm).

We multiply the found numbers, we get the area of ​​\u200b\u200bthe room in square meters. If we turn to our example, we get the following: 4.35 m * 3.25 m = 14.1375 sq. m. In this value, usually two digits after the decimal point are left, which means we round off. In total, the calculated quadrature of the room is 14.14 square meters.

Irregular room

If you need to calculate the area of ​​​​a room of irregular shape, it is divided into simple shapes - squares, rectangles, triangles. Then they measure all the necessary dimensions, make calculations according to known formulas (there is in the table just below).

One example is in the photo. Since both are rectangles, the area is calculated using the same formula: multiply the length by the width. The figure found must be subtracted or added to the size of the room, depending on the configuration.

Complex room area

1. We consider the quadrature without a ledge: 3.6 m * 8.5 m = 30.6 sq. m.
2. We consider the dimensions of the protruding part: 3.25 m * 0.8 m = 2.6 sq. m.
3. We add two values: 30.6 square meters. m. + 2.6 sq. m. = 33.2 sq. m.

There are also rooms with sloping walls. In this case, we split it so that we get rectangles and a triangle (as in the figure below). As you can see, for this case it is required to have five sizes. It could have been split differently by putting a vertical rather than a horizontal line. It doesn't matter. It just requires a set of simple shapes, and the way they are selected is arbitrary.

In this case, the calculation order is:

1. We consider the large rectangular part: 6.4 m * 1.4 m \u003d 8.96 square meters. m. If we round up, we get 9.0 sq.m.
2. We calculate a small rectangle: 2.7 m * 1.9 m \u003d 5.13 square meters. m. Rounding up, we get 5.1 square meters. m.
3. We calculate the area of ​​the triangle. Since it is with a right angle, it is equal to half the area of ​​a rectangle with the same dimensions. (1.3 m * 1.9 m) / 2 = 1.235 sq. m. After rounding, we get 1.2 square meters. m.
4. Now we add everything up to find the total area of ​​​​the room: 9.0 + 5.1 + 1.2 \u003d 15.3 square meters. m.

The layout of the premises can be very diverse, but you understand the general principle: we divide into simple figures, measure all the required dimensions, calculate the quadrature of each fragment, then add everything up.

Another important note: the area of ​​\u200b\u200bthe room, floor and ceiling are all the same values. Differences can be if there are some semi-columns that do not reach the ceiling. Then the quadrature of these elements is subtracted from the total quadrature. The result is the floor area.

How to calculate the square of the walls

Determining the area of ​​walls is often required when purchasing finishing materials - wallpaper, plaster, etc. This calculation requires additional measurements. To the already existing width and length of the room you will need:

• ceiling height;
• height and width of doorways;
• height and width of window openings.

All measurements are in meters, since the square of the walls is also usually measured in square meters.

Since the walls are rectangular, the area is calculated as for a rectangle: we multiply the length by the width. In the same way, we calculate the dimensions of windows and doorways, subtract their dimensions. For example, we calculate the area of ​​\u200b\u200bthe walls shown in the diagram above.

1. Wall with a door:
   • 2.5 m * 5.6 m = 14 square meters m. - the total area of ​​\u200b\u200bthe long wall
   • how much does a doorway take: 2.1 m * 0.9 m = 1.89 sq.m.
   • wall excluding doorway - 14 sq.m - 1.89 sq.m. m = 12.11 sq. m
2. Wall with a window:
   1. square of small walls: 2.5 m * 3.2 m = 8 sq.m.
   2. how much does a window take up: 1.3 m * 1.42 m = 1.846 sq. m, rounding up, we get 1.75 sq.m.
   3. wall without a window opening: 8 sq. m - 1.75 sq.m = 6.25 sq.m.

Finding the total area of ​​​​the walls is not difficult. We add up all four numbers: 14 sq.m + 12.11 sq.m. + 8 sq.m. + 6.25 sq.m. = 40.36 sq. m.

Room volume

Some calculations require the volume of the room. In this case, three values ​​​​are multiplied: width, length and height of the room. This value is measured in cubic meters (cubic meters), also called cubic capacity. For example, we use the data from the previous paragraph:

• length - 5.6 m;
• width - 3.2 m;
• height - 2.5 m.

If we multiply everything, we get: 5.6 m * 3.2 m * 2.5 m = 44.8 m 3. So, the volume of the room is 44.8 cubic meters.

How to calculate the area of ​​​​a room in square meters: instructions for measuring a living room, bathroom, kitchen, balcony and garage

How to calculate the area of ​​​​a room in square meters: instructions for measuring a living room, bathroom, kitchen, balcony and garage

In order to save on building materials, you need to know the exact footage of the dwelling.

To do this, you need to be able to correctly measure the room.

This article details how to do this.

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Classmates

Where to start measuring

Each room has 3 indicators to measure:

1. Length. Most often there are values ​​\u200b\u200bof 4 or 4.5 meters.
2. Width. In a standard apartment building, the width of the rooms is 3 or 3.5 meters.
3. Height. In new buildings, the height of the walls is 2.5 meters, and for example, in buildings of the Stalin era, it can reach three meters.

To measure square meters, you will need the following tools:

• roulette;
• pencil;
• paper;
• calculator.

Algorithm for calculating the quadrature of the room

For the calculation, it is necessary to apply the area formula: S \u003d a * b, where S is the area, a is the length, b is the width.

So, let's calculate the footage using the example of a living room with the following indicators:

Height (h) = 2.5 m;

Width = 3 m;

Length =5 m.

Let's calculate the floor area of ​​the room: S= 5 m*3 m = 15 m2. You will need these data when buying a floor covering or installing a stretch ceiling.

We calculate the area of ​​\u200b\u200bthe room along the walls using the following formula:h *(a*2+ b*2).

We calculate as follows: 2.5 m * (5 m * 2 + 3 m * 2) \u003d 40 m2.

In order to obtain net area values, it is necessary to subtract the area of ​​doors and windows from 40m2.

Doors and window openings

Standard doors have the following dimensions:

Width = 0.8 m, height = 2.0 m.

We multiply the indicators on each other: S \u003d 0.8 m * 2.0 m \u003d 1.6 m2.

A standard window in a multi-storey building has the following dimensions:

Width \u003d 1.6 m, height \u003d 1.5 m. In the course of the product of two numbers, we get the area: S \u003d 1.6 m * 1.5 m \u003d 2.4 m2.

Snet \u003d 40 m-2.4 m-1.6 m \u003d 36 m2.

Master's note: determining the net area will help you choose the right amount of wallpaper tubes, drywall sheets and other finishing materials.

Irregular room

It is necessary to measure the quadrature of the room in stages, dividing it into several sections of the correct shape.

So, let's look at concrete examples of how to calculate the footage:

1. Kitchen. Each kitchen has a ventilation shaft, a radiator along the window, a door, a window and a built-in storage shelf. Let's calculate the net area of ​​\u200b\u200bthe walls of the kitchen for.

Kitchen details:

Height =2.5 m;

Width=3m;

Length =3.5m.

Door size: width=0.8m, height=2.0m;

Window size: width 1.2 m, height = 1.5 m;

The ventilation shaft has the following dimensions: width =50 cm, length =30 cm; height = 2.5 m;

Built-in shelf: width = 20 cm, length = 50 cm, height = 2.5 m;

Radiator dimensions: width = 10 cm, length = 100 cm, height = 50 cm.

Let's calculate the net area:

First, we find the total area: (3.5 m * 2) + (3 m * 2) * 2.5 m = 32.5 m2;

Windows: S net = 1.2 m * 1.5 m = 1.8 m2;

Doors: S net = 0.8 m * 2.0 m = 1.6 m2;

Ventilation shaft: S net = (50 cm * 2) + (30 cm * 2) * 2.5 m = 400 cm2 or 0.40 m2;

Built-in shelf: S net = (20 cm * 2) + (50 cm * 2) * 2.5 m = 350 cm2 or 0.35 m2;

Radiator surface area: (10 cm *2) + (100 cm *2) * 0.5 m = 110 cm2 or 0.11 m2.

Now we determine the number of net square meters by subtracting their total area: S net kitchen walls \u003d 32.5 m2 - 1.8 m2 - 1.6 m2 - 0.40 m2 - 0.35 m2 - 0.11 m2 \u003d 28, 24 m2.

Useful advice: to count the number of wallpaper tubes, you need to divide the net area by the number of sheets in the tube.

A standard tube has the following dimensions: width = 50 cm, web length = 10 m. The height of the walls of the apartment is 2.5 m, and it follows that 4 paper sheets are included in one tube: 10 m / 2.5 m = 4 sheets.

Let's calculate how many tubes are needed to:

28.24 m2 / 4 = 7.06 tubes. But since a paper canvas can contain a pattern in increments of 0.3 or 0.5, the number of tubes should be rounded up to 8.

1. Bathroom. Calculate the number of boxes of tiles for a standard bath. In order to correctly calculate the quadrature of the room, it is necessary to take measurements taking into account the trimming of ceramic tiles.

We know the standard size of the door: width = 0.8 m; height = 2.0 m.

The size of a typical bathroom is: width 2.3 m; length = 1.6 m, height = 2.5 m.

We calculate the net area of ​​the bath:

S baths \u003d (2.3 m * 2) + (1.6 m * 2) * 2.5 m \u003d 19.5 m2.

Then, subtract the following values:

S net = 19.5 m2 - 1.6 m2 = 17.9 m2.

In order to calculate how many boxes of tiles you need, you should decide on the size of the ceramic product. The tile comes in the following sizes: 10x10; 10x20; 20x30; 30x30. Let's take a more common option: 30x30.

There are 10 pieces in one package and, knowing the size of the tile, you can calculate the number of pieces per 1 m2:

1 m2 is 100 cm by 100 cm, it follows that 1 m2 includes 9 whole tiles 30x30 and 7 tiles, 10x10 cm in size.

Let's determine the number of whole tiles and the number of cuts:

17.9 m2 / 9 \u003d 1.9 - round up and get 20 boxes of whole tiles;

20 * 7 = 140 small tiles, 10x10 in size.

If you lay tiles on a plane without trimming, then you should take 20 boxes, and if with trimming, then 16.

1. Balcony. To get the net area of ​​the balcony, it is necessary to measure the frames with glazing. The perimeter of the balcony is measured excluding windows.
2. Garage. As a rule, the garage is a box with a small window. To calculate the net area, it is necessary to measure the dimensions of the gate.

try on the area of ​​​​a round window, ceiling, building wall in the form of an irregular shape or an octahedron, you can use improvised means.

Take a tape measure and measure the maximum diameter of the circle, for example, it turned out to be 100 cm. Calculate the radius: 100 cm / 2 \u003d 50 cm - this is ¼ of a circle in the form of a triangle.

If the circle is visually divided into 4 parts, and the points are connected with straight lines, we get 2 isosceles triangles or 1 square. We know a part of an isosceles triangle, therefore, all sides will be 50 cm long. It remains to find the area of ​​a square where all sides are 50 cm long. You can calculate the total area of ​​\u200b\u200bany structure using an online program.

Watch the video in which the master explains in detail how to correctly calculate the area of ​​\u200b\u200bthe walls in the apartment:

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If you are going to make repairs, the first thing you need to do is plan the budget for repairs, and for this, in turn, you need to know how much building and finishing materials will be needed, provided, of course, that you have already decided on the design project and you know exactly where the tiles will be installed, which walls will be “painted” or textured plaster, and where the built-in wardrobe will be located.

Interested in the cost of services for repair work, you will pay attention to the fact that all prices are usually "tied" to square meters. Actually, the apartment renovation budget is directly related to the area of ​​\u200b\u200byour square meters. So we come to the main question of our article - how to calculate square meters?

Take a good look at your room. The room consists of walls, floor and ceiling, it also has windows and doors. So you will need to calculate the area of ​​​​all surfaces that will be subject to repair work, taking into account all additional components, which are windows and doors.

Each of the walls, as well as the ceiling and floor, is either a square or a rectangle. Walls have width and height, floor and ceiling have length and width measured in meters. How to calculate square meter?

So, the area of ​​a rectangular or square surface is calculated by the formula:

S= a x b, where

a and b - sides of the rectangle (walls, ceiling, floor).

Suppose your room is 6 meters long and 4 meters wide, then:

• the floor area of ​​the room will be 24 square meters:

Now let's calculate the area of ​​the rooms along the walls. Suppose you have a ceiling height of 3 meters, then:

• the area of ​​​​the room along one wall will be equal to 18 square meters

• the area of ​​the room on the other wall will be equal to 12 square meters

• the area of ​​four walls is 60 square meters

S = (18+12) x 2

How to count square meters, you already know. But for repairs and accurate calculation of the area, for example, plastering, you need to calculate from the total area of ​​\u200b\u200bthe walls the areas that are occupied by windows and doors. After all, they do not need to be plastered or putty.

Similarly, you calculate the area of ​​the rectangle occupied by windows and doors. Suppose the door is 2 meters high and 0.90 meters wide, then:

• door leaf area is 1.8 square meters

We consider the area occupied by the window opening. If the height of the window is, say, 1.5 meters, and the width is 1.6 meters, then:

• the window area in our example is 2.4 square meters

If the room has one door and one window, then from the total area of ​​​​the walls it is necessary to subtract the area occupied by windows and doors:

S = 60 - 1.8 - 2.4

So, the total wall area is 55.8 square meters, the floor and ceiling area is 24 square meters each.

Igor Voropaev

Expert comment

Igor Voropaev - leading lawyer of "Prosper-Consulting"
PropertyExperts Portal Consultant

I have been working for a construction company for several years and go out to measure the dimensions of the premises almost daily. Before starting work, everyone who plans to use the services of our company must call a specialist and measure the geometric perimeter, determine the shape of the room (maybe even a triangle), the number of simple and complex shapes (protrusions, niches), and also determine the values ​​​​of other quantities in cubic and running meters.

If this is an exterior finish, the roof and the entire structure are also measured. A student also arrives and performs the calculations (it may take several minutes, because it is necessary to multiply the measurements). After converting the indicators and units, he will present a quick final result with the presence of the correct dimensions, according to which the cost of various works will be calculated (number of rolls of paper, lining, coatings in the bathroom, putty weight).

Based on these data, the total cost of the work will be set. We do not charge for these works if the repair is ordered from us. It is in this case that it is excluded that there will be problems with materials or the amount of work, which is convenient for everyone.

It is impossible to repair the floor surface without knowing the exact floor area in a private household or apartment. The fact is that today the cost of building materials is quite high, and every property owner tries to save as much as possible on their purchase. Therefore, information on how to calculate the floor area will not be superfluous for someone who prefers to make repairs with his own hands.

Why you need to know the floor area

Before starting work, you should decide on the scope of activities, plan costs and calculate the amount of building materials. To do this, you will need the original data. For this reason, it is important to know how to calculate the floor area accurately. This is especially true for uneven surfaces and rooms with a non-standard layout.

There are other reasons when there is a need to accurately determine the dimensions of the floor surface:

• checking the quality of construction work;
• the need for redevelopment of the premises.

Determining the area of ​​a rectangular room

Before you calculate the floor area, you should stock up on a calculator and a measuring tape. Most often there are rooms in the shape of a rectangle. To calculate their area, they use a formula known to everyone from school: S \u003d a x b, where a and b are the length and width. For example, a room has parameters of 3 and 4 meters, then the desired value will be 12 square meters. m.

In the event that the room has a fireplace or built-in furniture, then you need to find out their area and subtract from the total area. In the case of a major overhaul of the floor, all unnecessary in the room will have to be dismantled.

Calculation of the area of ​​​​the room of the wrong layout

It is much more difficult to calculate the area of ​​​​a room that has a polygonal shape. Often in brick houses in the layout there are niches, triangular recesses and rounded elements, as in the photo.

In this case, before calculating the quadrature of the floor, the layout of the room must be divided into separate zones. For example, if the room has an L-shaped layout, it should be divided into 2 rectangles, then calculate the area of ​​\u200b\u200beach of them and add the results.

Finding the area of ​​a triangular room

When another part of the room is not perpendicular to the main area, this means that there is also a triangle between the two rectangles, which has a right angle.

In this case, the area of ​​the triangle is calculated by the formula: S \u003d (a x b): 2 and added to the grand total. For example, a \u003d 2, b \u003d 3, then S \u003d (2x3): 2 \u003d 3 m².

You can define the area in another way:

1. First calculate the square of the rectangle.
2. Determine the area of ​​the beveled triangular corner.
3. Subtract the area of ​​the triangle from the quadrature of the rectangle.

In the case when the triangle does not have a right angle, then use the Heron formula S \u003d √p (p - a) (p - b) (p - c).

For example, its sides are 5, 6 and 7 meters, then the calculations are made as follows:

1. Find out the semiperimeter of the triangle p = (5+6+7):2 = 9.
2. Digital values ​​​​are substituted into the Heron formula and the result is obtained: √ (9 x (9-7) x (9-6) x (9-5) \u003d 14.7 m².

The square of the premises is rounded

Often, a similar form is present at the windows in old houses or on balconies that are combined with rooms. First, calculate 1/2 of the protruding part of the circle and add to the area of ​​the rectangle, applying the formula S = πR²: 2, in which:

R² is the radius of the circle squared.

How to calculate the area of ​​​​the walls of a room

The procedure for calculating the area of ​​\u200b\u200bwalls and floor is different. The fact is that before you calculate the quadrature of the floor, you should find out the length and width of the room, and to calculate the walls you will need to measure its height. Therefore, they first find out the perimeter of the room and multiply by the height of the ceilings.

For example, the floor parameters are 3 and 4 meters, and the height of the room is 3 meters. In this case, the perimeter of the walls will be equal to (3 + 4) x2 = 14 m, and their area S = 14x3 = 42 m².
In this case, one should not forget about the quadrature of the openings of windows and doors. Their area is subtracted after the completion of wall calculations. But on the other hand, they can be ignored and thus provide a certain supply of materials.

Proportions between floor and window area

According to SNiP 31-01-2003, the parameters of windows and their number should depend on the quadrature of the floor. So for residential multi-apartment buildings, the ratio between the areas of window openings and the floor surface will be from 1:5.5 to 1:8. As for the upper floors, a minimum proportion of 1:10 is allowed there.

For private households, this norm is regulated by SNiP 31-02-2001. According to this documentation, for every 8 "squares" of the floor surface, there must be at least one "square" of a source of natural light flux. On the attic floors, this proportion cannot be less than 1:10.

To ensure high-quality repairs, you need to find out in advance how to calculate the floor area and other necessary dimensions of the room. The preparatory stage also provides for the purchase of building materials and then during the repair process, costs will be minimized, since there will not be large residues and the cost of delivery will be inexpensive.

The manual method of calculating how to find out the floor area will take longer than when making calculations on an existing building calculator, but it allows you to find out more accurate results.