Spiral staircase
A spiral staircase can be a spectacular element of your home decoration. Usually this type of staircase design is used in case of emergency, when space is limited, or as an addition to the marching stairs. For the construction of the spiral staircase requires 1.5 times less space, does not require the use of supporting beams.
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The structural elements of the spiral staircase are the central post, steps and handrails. The width of the steps varies, usually increasing from the center to the outer edge. The steps are screwed to the center post in a circle and as a result provide a screw-like rise. To install the spiral staircase there is no need to support the construction on the bearing walls, it is enough to fix a rack to the floor slabs.
The small size of the tread in the line of movement compensates for the absence of treads in the design. Absence of a vertical supporting element allows the staircase to have a more comfortable footing when using the staircase. It is extremely inconvenient to move loads on a spiral staircase, which is why this type of construction is used as additional decoration of the room.
The vertical pole is set strictly vertically. An important point is the fastening of the structure to the floor, in the place of fastening the load from the entire staircase is transferred. Anchor bolts are used for fixation, or the end of the post is concreted.
