The spiral staircase serves as an excellent interior decoration. Adhering to a certain order when calculating the design and installation of the structure, you can make a staircase of any form.
Elements of spiral staircase
The characteristic feature of the spiral staircase is the location of the steps. Steps are installed radially, from the center to the edge of the circle. Top view looks like a circle or polygon. For the manufacture of the design, prepare several main nodes:
- Steps;
- Central support;
- Balusters;
- Railing.
Calculation of design elements
To bind the facilities to your home, make the basis of the main elements of the stairs based on the following recommendations:
- The optimal length of steps is 80 cm. In case of rare use - 60 cm.
- The diameter of the staircase is about 2 m.
- The width of the stage in the middle part must be at least 20 cm. At 15 cm from the middle part, the width should not be less than 10 cm.
- Diameter of support (rack) - from 2 to 5 cm.
- The height between the turns of the stairs is more than 2 m.
- The number of steps in full turn is at least 12.
Approximate calculations of the screw staircase
On the construction sites on the Internet you can find ready-made projects of screw stairs, which can be converted to its room. With a design height of 3 m, the initial dimensions can be taken as follows:
- The outer diameter of the design is 220 mm.
- The inner diameter of the design is 20 cm.
- Number of steps - 27 pcs.
- The thickness of the steps is 5 cm.
- Stage height - 11.1 cm.
- Stage length - 100 cm.
- Step width - 36.1 cm.
Selection of material
For construction, solid species of trees (oak, maple), metal profile, plastic will be suitable. All materials can be combined with each other.
Making steps
The market sells blanks for steps with a thickness of 40 mm of two sizes - 40 × 80 cm and 30 × 110 cm. Pick the desired size. Split every workpiece into two parts diagonally. Cut samples in size. In a narrow part of each stage, perform a hole with a diameter of the central support. The edges of the steps are rounded, stroke on the machine.
Stand manufacturing
The column must be steel, usually a thick-walled pipe. Spile the sample of the required length. From the metal sheet, take out the disk drive. Welcome a column to the spyer.
Balaasins and Perila
Balaasins are made of wood or metal. Lower to do longer to rest in the floor - will serve as an extra support. The railing is better made bent, look beautiful, although difficult in performance.
Sleeves on racks for fixing steps
The bushings are put on the column, they keep the steps. The height of the sleeve is equal to the height of the stage, and the inner diameter is equal to the rack diameter. In order not to deform the steps and the sleeve itself, make safety washers. When calculating the height of the sleeves, take into account the thickness of the washers.
Assembling stairs
Secure the central support to the floor strictly vertically. If the floor is wooden, boat rack using anchor bolts. The cement floor support is attached by concrete fill with stretch marks. Install the sleeve on the central column, the height of which is equal to the height of the stage. It dresses her first step. The remaining bushings and steps are installed on top. Steps must overlap each other by 5-6 cm. Place them in the required position and secure by the hospitals. Balaasins and railings are attached to the wide part. The upper step should be on the same level with the second floor floor. In this place, you mount the platform and secure the top of the column, additionally holding it in the vertical plane. The last step is painting the design.
The spiral staircase has a very attractive look, but it is necessary to climb it carefully. Unbroken steps, problems with transportation of overall objects restricted their mass construction. Rationally build such stairs in rooms with a small movement.
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