What are open doors and windows, and what are no open doors and windows?

Open doors and windows refer to doors and windows with Liangzi, while open doors and windows refer to doors and windows without Liangzi.

Liangzi, also known as waist window, is divided into horizontal type, fixed type, upper, middle and lower hanging type above the door, which is used for auxiliary lighting and ventilation.

When there is no strong light on the door of a residential building, the height of the door opening is usually 2 100mm and 2400mm；; When there is a bright child, the height of the door is generally 2400mm and 2700mm, and the height of Liangzi is generally 300 ~ 600 mm The height of the door is the height of the door leaf plus the height of Liangzi, plus the height of the door frame and the size of the structural gap between the door frame and the wall. * * * The building will be appropriately heightened with the change of the width of the doorway.

Extended data:

Classification of doors and windows:

1. According to the materials of doors and windows, they can be roughly divided into the following categories: wooden doors and windows, steel doors and windows, plastic steel doors and windows, aluminum alloy doors and windows, glass fiber reinforced plastic doors and windows, stainless steel doors and windows, and iron flower doors and windows.

Since the reform and opening up, people's living standards have been continuously improved, and the types and grades of doors and windows and their derivatives have been continuously increased, such as insulation broken bridge aluminum doors and windows, wood-aluminum composite doors and windows, aluminum-wood composite doors and windows, solid wood doors and windows, sun rooms, glass curtain walls and wood curtain walls.

2. According to the function of doors and windows: revolving door security door, automatic door and revolving door.

3. According to the opening mode, it can be divided into: fixed window, upper hanging window, middle hanging window, lower hanging window, vertical rotating window, casement window, sliding window, casement window, sliding casement window, folding door, floor spring door, lifting sliding door, sliding folding door and inner sliding door.

4. According to the performance, it can be divided into sound insulation doors and windows, thermal insulation doors and windows, fire prevention doors and windows and closed doors and windows.

5. According to the application parts, it is divided into internal doors and windows and external doors and windows.

Baidu encyclopedia-doors and windows

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