Steel and spiral stairs

The rise, the space you have, and inside or outside.

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5′ spiral stair, 9′ rise: 11 treads (9″ rises), a 5′ kit (26″ clear path) and a floor opening of ≥ 62″.

What people get wrong:

• Ordering before measuring. Kits are made for a range of floor-to-floor heights: measure from finished floor to finished floor (carpet, tile and all) before you order.
• An opening too small for the stair. The stair needs the opening 2″ bigger than its diameter, or heads hit the floor’s edge.
• A narrow spiral as the only stair to bedrooms. A 42″ or 48″ spiral is too narrow for the code’s main stair: it’s a second way up.

The worked example, every line's math and the code notes · Your own sizes in the app

• Deck and porch stairs: Stringers, landings and outside steps
• Interior and basement stairs: Building and fixing stairs inside the house
• Concrete steps: Pouring and facing concrete steps
• Railings and guards: Deck, stair and balcony railings: wood, metal and glass
• Every group

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