The art of the spiral staircase

2019/7/25 13:50:26    
 

 What is spiral staircase?

 Spiral staircase is normally called a spiral or spiral staircase. The spiral staircase is the general name for all curved staircases. Some people say that a staircase that rotates more than one circle is called a spiral staircase, and a staircase that rotates less than one circle is called a curved staircase, this statement is inaccurate. As long as a staircase rotates along a rotating shaft, whether it is 30 degrees or 360 degrees, it should be called a spiral staircase.

 

 

Some stairs are curved, but they do not have a fixed rotating shaft, such as hyperbolic bending, parabolic bending, etc. These non-closed curved curves generally do not form a rotating shape independently, it often matchs with a rotating curve to form a composite curved staircase maily with a rotating axis curve  and a non-rotating axis curve as a supplement. so we usually call all curved stairs  spiral stairs.

 

 

The most beautiful spiral staircase in the hall is generally rotated from 100 degrees to 120 degrees. Upper is wide and lower is narrow, and the ratio is 4 : 3 to 3 : 2.
The average step height of  house-used marble spiral staircase is between 150 and 170 mm, the width of the step at the narrowest point is not less than 270 mm, the width of the widest point is not more than 480 mm, and the width of the stairs is generally from 900 mm to 1300 mm . The height of the step of the luxury marble spiral staircase in the hall should be less than 150 mm, the width of the step at the narrowest point should not be less than 310 mm, the width of the widest part should not be limited, and the width of the stairs should generally be above 1300 mm, preferably above 2000 mm. The basic frame of the spiral staircase must be precise whether it is made of concrete or steel frame . The curve of the stone veneer should be natural, and there should be no sudden change of curvature. A good stone spiral staircase gives a feeling of making with a whole piece of stone., can not have the feeling of dry branches, chastity.

Three key points of making spiral staircases

 

Key Point 1: Scientific and Accurate Design Solutions —sufficient scientific and accurate design drawings are the top priority of spiral staircase design. If the size of the design is wrong, it will directly lead to the installation failure.

 

 

Key Point 3:The professional installation team  - the spiral staircase is complicated in process, complex in shape, The basic frame of the spiral staircase must be precise whether it is made of concrete or steel frame,The curve of the stone veneer should be natural

 

 

Classification of marble spiral staircase grades should be classified from three aspects: shape, color and quality. Generally, it can be subdivided into the following 8 evaluation items:

1. From the morphological temperament, whether there is a visual center feeling in the decorative space, whether to bend the natural, macroscopic atmosphere.

2, from the color of the material, the matching of various stone color is harmonious and beautiful.

 

3. From the processing precision, the shape of the marble processed parts is rough or fine, and the parts are naturally smooth after being connected.

4. From the texture fineness, whether the marble used in the processing and polishing has the feeling of moisturizing the skin and porcelain.

5. From the connection technology, the connections between various materials and between the various components are connected to each other or inlaid.

6, from the coverage area, whether there are marble kick cover, handrails, waistline, side arc plates and other components that represent the characteristics of marble spiral staircase.

7, from the complex luxury points, side arc plates and other components on whether there are fine lines such as waist line or include fine carving

8. From the length of the stone, whether the length of the hand piece, the waist line, the kick cover, and the side arc plate is greater than the length of the three steps, or more than 1 meter.

It is more objective to evaluate the grade of a marble spiral staircase from the above eight aspects.