about Spiral stairs Save space. If the space is small, generally speaking, the opening size of the spiral staircase can be 1300 * 1300MM, or 1400 * 1100MM. But now there is only one center stress point for the central column revolving stairs. When walking on the outside, such a structure will cause the step board to shake up and down. This is a common disadvantage of the central column rotating stairs. If the passage radius of the stairs is larger, the pedal will shake more severely. The bearing capacity of spiral stairs is generally 150KG to 200KG, compared with other finished products Steel and wood stairs The bearing capacity is generally about 400KG.

Step height and depth: the step height should be 15-18cm, and the step surface depth should be 22-27cm. The number of steps is about 15. If it is too high, a stair rest platform may be required.

The steps shall be controlled to 20-30cm, and the height from the first step to the ceiling shall be more than 2m, and the height from the first step to the ceiling shall be no less than 1.8m. The center distance between the two railings should be 8cm, not more than 12.5cm. The height of the handrail to the waist should be 85-90cm, and the diameter of the handrail should be 5.5cm.

Precautions for stair design:

1、 To avoid illusion when going up and down stairs, the height of the primary step and the last step of the stairs should be the same as that of other steps. If it needs to be changed, it should be controlled within 4 cm, and try not to exceed 2 cm~3 cm.

2、 The height of the stairs from the last floor to the ceiling needs to have a clearance of more than two meters, and at least 1.8 meters at the lowest level, otherwise it will produce a sense of oppression.

3、 Spacing between railings: the center distance between two railings should be 8 cm, not more than 12.5 cm, to prevent children from sticking their heads out of the gap.

What are the design skills of spiral stairs? Hebei steel and wood stairs manufacturer Explain to you

4、 Handrail height: 85~90cm to the waist, and the diameter of the handrail should be 5.5cm.

5、 Step height and depth: the step height should be 15~18cm, and the step surface depth should be 22~27cm. The number of steps is about 15. If it is too high, a stair rest platform may be required.

6、 Stair width: when one side is free, the clear width shall not be less than 75 cm; When there are walls on both sides, the clear width shall not be less than 90cm.

7、 Safety: Stair parts shall be smooth and round without protruding and sharp parts. For families with children and the elderly, the gradient of stairs should be slow and the rotation angle should not be too large; Anti slip measures shall be taken for stair treads, such as anti slip strips, anti slip pads, anti slip grooves, etc.

8、 Stair lighting: too dark light is not conducive to walking safety, and too bright light is prone to glare. Therefore, the light of stairs should be soft and clear.

The above is the knowledge of revolving stairs design skills, and I hope it will be helpful to everyone.