What are the different types of spiral stairs?

There are several different types of spiral stairs:

1. Traditional spiral stairs: These stairs have a circular design with each step decreasing in size as the spiral progresses upward.

2. Helical spiral stairs: These stairs have a more gradual curve than traditional spiral stairs, with each step having a consistent size and shape.

3. Elliptical spiral stairs: These stairs have an oval shape, with each step being wider and rounder than a traditional spiral stair.

4. Square spiral stairs: These stairs have a square shape rather than a circular one, with each step being angular rather than curved.

5. Winder spiral stairs: These stairs have alternating steps that are wider on one side than the other, allowing the stairs to turn sharply in a tight space.

6. Spiral stairs with landings: These stairs have one or more landings that break up the spiral, making them easier to climb and more visually interesting.

7. Cantilever spiral stairs: These stairs have a central column or spine, with each step cantilevering out from the column in a helix pattern.

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