What are the three parts of the stairs?

Stairs generally consist of stair sections, platforms, railings or handrails.

1. Stair part: This is the main part connecting two floors and usually consists of a series of continuous steps. According to the type and design requirements of stairs, the shape, size and inclination angle of stairs are different.

2. Platforms: There are usually one or more platforms between the two main parts of the stairs for people to rest, turn around or change the direction of travel. The height and width of the platform are determined according to the purpose and design requirements of the stairs.

3. Rails or handrails: In order to ensure people's safety, stairs are usually equipped with railings or handrails. These facilities can provide extra support and balance and help people walk steadily, especially on steep stairs.

These three parts are isomorphic to form the basic structure of stairs, which ensures that people can safely and conveniently go from one floor to another. When designing stairs, it is necessary to consider the size, inclination angle, platform position and the position and strength of railings or handrails to ensure that they meet the building codes and safety requirements. At the same time, the design of stairs should be coordinated with the overall style and functional requirements of the building to provide users with a comfortable and beautiful traffic environment.

Stair type:

1, Straight staircase: This is the simplest and most common staircase form, which consists of a straight staircase section with two ends connected to the floor platform. This kind of stairs is simple in structure and occupies less space, and is usually used in buildings such as houses and schools.

2.L-shaped staircase: L-shaped staircase consists of two mutually vertical staircase sections, which are connected by a platform. This kind of stairs can flexibly adapt to the layout of the building, save space and provide a better traffic experience.

3.U-shaped staircase: A U-shaped staircase consists of three stairs, two ends of which are connected with the bottom and top platforms respectively, and one or more platforms are connected in the middle. This kind of stairs is beautiful and generous, which can provide more rest and communication space for people.

4. Spiral staircase: Spiral staircase is a kind of artistic staircase, which rotates and rises around a central axis. This kind of stairs occupies a small area and has a unique shape. Usually used in villas, hotels and other high-end buildings.

5. Arc staircase: Arc staircase is a kind of arc staircase, and its shape can be adjusted according to the needs of the building and the creativity of the designer. This kind of stairs is not only beautiful, but also provides a smooth traffic experience.