How to calculate the area of the house on the walls

When building a private house, many difficulties arise, which often have to be solved even before the beginning of construction work. First, we need to draw up a detailed plan for the future structure, indicating the exact dimensions of the walls of the house, the premises, the size and location of windows and doors. After this, using this data, you can calculate the area of the house on the walls. This is necessary for the preparation of a home's passport and other regulatory documents for the design of the building.

What is a dwelling

Before you calculate the area of the house on the walls, you need to clarify a few nuances. First, you need to know the definition of a dwelling house. Secondly, it is necessary to determine what is meant by living quarters.

So, according to the legislation, a dwelling house is a separate building in which one family lives. It includes residential and other premises intended for comfortable living. Residential are considered all heated premises. Unheated rooms, such as balconies, are not residential.

When calculating the area of an apartment house, the areas of all residential (living rooms, bedrooms, offices and so on) and auxiliary (kitchen, toilet, bathroom, bathroom, boiler room, etc.) are taken into account.

How to calculate the area of the walls of the house

Often it is necessary to know the area of the walls. This can be useful when drawing up a house plan, buying wall material (bricks, blocks, etc.), insulation, materials for interior and exterior wall decoration. Calculate the area of the walls of the house is very simple. To do this, you must measure each of the walls and calculate their area, and then add the resulting values.

Consider a simple example of calculating the area of one room. Suppose that it has a rectangular shape. One wall will be 6 meters long, and the second - 5 meters, ceiling height - 2.5 meters. Since the room is rectangular, it will have two pairs of identical walls. Therefore, we only need to calculate the areas of two conjugate walls. We get the area of the first wall - 6 x 2.5 = 15 square meters, and the area of the second - 12.5 square meters. Since there are two identical walls, the area of the walls of the room is 2 x 15 + 2 x 12.5 = 55 square meters.

Using these values, you can calculate the volume of the room. This is necessary when calculating ventilation and heating systems. The volume is calculated as follows: 5 x 6 x 2.5 = 75 cubic meters.

If you need to know how much wall material you need to buy, then from the area of the walls you need to subtract the area of doors and windows. Suppose that in a room 5 x 6 meters you need to buy a wallpaper. There are two 1.5-square-meter windows in it. M and the door is 2 sq. M. M. Thus, for gluing the walls you need 55 - (1.5 + 1.5 + 2) = 50 sq. M. Meters of wallpaper.

Calculation of internal walls

Since the area of an apartment house is the sum of all areas of living quarters, it is necessary to calculate them without taking into account the windows and doors. It should be noted that the area under the stairs to a height of 160 cm is not taken into account. Also not included in the total area of the area parts of attic rooms with a ceiling height of less than 160 cm (if the angle of inclination of the ceiling is less than 45 °) and up to 190 cm (if the angle of inclination is more than 45 °). For the rest of the attic rooms it is customary to use a coefficient of 0.7. That is, the resulting area is multiplied by 0.7.

Now let's see in more detail how the area of the house is calculated on the walls inside. The area of a rectangular room is the product of its width by the length. With the area of the walls of the room, which has the form of a parallelepiped, we already broke.

We turn to more complex forms. Calculate the area of the walls of the attic room. To do this, it is also necessary to calculate the area of each wall and add the resulting values. For simplicity, let's take the attic room of a house with a symmetrical gable roof. The area of the walls along the slopes are considered according to the ceiling height, as indicated above. The areas of triangular walls are calculated as follows: the length of the wall along the floor is multiplied by the height of the room (in the ridge) and is divided into two. Consider the example: the length of the walls along the ridge along the floor is 10 meters, the length along the slope is 5 meters, the width of the triangular walls is 8 meters, and the height of the skate is 3 meters. Thus, the area of all the walls is 124 square meters.

Calculation on external walls

If the calculation of the area of the house on the walls is carried out from the outside, then it is carried out as follows. The total area of the house is calculated. From it is subtracted the area of the walls, and without regard to the door and window openings. Here all walls are taken into account - both bearing and parting. From the remaining area are subtracted parts of the premises (under the stairs or slope of the roof) and the area of non-residential premises.