Design requirements of spiral staircase size

Design requirements of spiral staircase size

1, basic standard

The basic standard of spiral staircase size is that the first step of the staircase can reach the height of the ceiling, which should be higher than 1.8m? Stair pedal length

2. Step control

The control of steps is generally between 20 and 20-30 cm. Some steps can reach the height of the ceiling, requiring a clearance of not less than two meters, while others should be not less than 1.8 meters. The distance between the centers of the two railings is 8cm, which shall not exceed 12.5 cm. The height of the handrail is about 85-90 cm, and the diameter of the handrail is 5.5cm..

Step 3: take the ladder

Spiral stairs are arranged around a single column, and the plane of the stairs is circular. Moreover, the platform and steps are both fan-shaped planes, and the width of the inner side of the steps is very small, forming a steep slope, which is unsafe to walk and complicated to construct. It needs to be determined according to the actual situation.

4, the central column rotation

Central cylindrical spiral staircase saves space. If the space is small, the size of the hole of the spiral staircase can be opened to 1300 1300MM, or14001kloc-0/00mm. As a revolving staircase with a central column, it has only one central stress point. Walking on the outside, this structure will make the pedal shake up and down.

5. Completed stairs

If the finished staircase is made, it is simple, convenient, fashionable and very cheap. Generally, the spiral staircase 1300 is a relatively small diameter, and 2000 is considered as a large diameter. Usually, the whole staircase needs 4500-7500, depending on the local consumption level.

Note: The above prices are collected online for reference only.