How to calculate window openings?

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Standard sizes of window openings (GOST 23166-99), window units and balcony doors are presented in an expanded range of sizes: height values ​​have been added - 580 and 1320 mm, width values ​​- 2370 and 2670 mm without specifying whether they will be installed in residential or public buildings.

In panel houses, a standard window with two sashes should have dimensions (height and width) of 1300x1400 mm, and with three sashes – a height of 1400 mm, and a sash width of 2070 or 2050 mm.

Window sizes are also standardized for five-story buildings of bc data hong kong Khrushchev period. For a window with two sashes and a narrow window sill, the size used is 1300x1350 mm, for a window with three sashes - 2040x1350 mm, and for a wide window sill - 1450x1500 and 2040x1500 mm.

Thus, in order to select the number and sizes of window openings for a country house under construction, you can perform the following sequence of actions:
- calculate the area of ​​glazing of windows based on the area of ​​the room (divide by 8);
- determine the height of the windows from the standard size range (take into account the architectural appearance of the house, its harmonious aesthetic appearance);
- divide the glazing area by the height of the window glass to obtain the total width of glazing;
- calculate the number of windows for the width values ​​of the standard range that suit you by dividing the total width of glazing by the selected value of the width of the window block glass (round the resulting value up if you get a fractional number);
- select the width value that suits our preferences best.

The result is no worse than the requirements of SNiP, since the result was rounded up.

Let's take a room with an area of ​​40 sq.m. - the glazing area should be at least 5 sq.m. With a window height of 1460 mm (glass height - 1210 mm), the total glazing length will be 4132 mm, which is equivalent to 4 windows with a width of 1320 mm (glass width 1170 mm) or three windows with a width of 1770 mm (glass width 1520 mm).