Perhaps the door reception is present in any room. The convenience of entering the room, as well as the ability to move large pieces of furniture and household appliances, directly depends on it, more precisely, on its size.
The size of doorways is regulated by the mandatory requirements of GOST and a number of norms set forth in various construction documents and rules (SNiPah).
This procedure allows us to standardize the design and construction of various buildings, both residential, public and industrial.
When choosing the size of doorways, it is necessary to focus on the convenient passage of people through it, and also take into account the estimated intensity of movement.
In the case when you are installing doors yourself, you need to be able to correctly measure. You can not focus on the standard sizes of doorways without defining their parameters, as they can have significant differences.
The first thing to do is measure the width. This value is the distance from one side of the opening to the other. Do not forget that the measurement should be carried out in the narrowest place. In the case when you change the old door to a new one, you can simply measure the existing canvas.
Now let's move on to ascertaining the height. This value is equal to the distance from the top of the opening to the floor. Or if you have an old door leaf, you can measure its height. This will also be correct.
The third step in taking measurements will be to determine the depth of the opening. To do this, find out the wall thickness in the opening. Measurement is carried out at three points on both sides: above, below and in the center. This way you will understand where the widest point of the wall is.
Now you know how to measure a doorway correctly . Dimensions (GOST) provided by regulatory requirements determine typical values for different rooms of a residential building. For example, for the kitchen, a canvas is used with a width of 70 centimeters, a height of 200 and an opening depth of 7 centimeters. Or an example: the standard sizes of doors and openings in the bathroom (bathroom) should correspond to a width of 55 or 60 centimeters, a height of 190 or 200 centimeters, and a depth of the opening from 7-20 cm
The size of the doorways corresponds to the parameters of the canvas. In order to make it easier to make a choice, there is an approximate table of the ratio of values. With its help, you can easily come to the right decision.
| Door leaf size | Doorways Size |
| Width (mm) | Height (mm) | Width (mm) | Height (mm) |
| 550 | 1900 | 630-650 | 1940-2030 |
| 600 | 1900 | 660-760 | 1940-2030 |
| 600 | 2000 | 660-760 | 2040-2070 |
| 700 | 2000 | 770-870 | 2040-2070 |
| 800 | 2000 | 880-970 | 2040-2070 |
| 900 | 2000 | 980-1100 | 2040-2070 |
| 1200 | 2000 | 1280-1300 | 2040-2070 |
| 1400 | 2000 | 1480-1500 | 2040-2070 |
| 1500 | 2000 | 1580-1600 | 2040-2070 |
Standard sizes have a number of rather significant advantages, as they allow the installation of doors in the shortest possible time. Another advantage of this option is the cost, which reduces your financial costs. According to experts, when installing standard doors you do not have to use professional services. And yet, do not think that when you have to limit yourself in choosing, buying a model of traditional sizes. Today, there is a large assortment of doors on sale that meet standard parameters.