Spiral Staircase Dimensions & Sizes
Paragonโs designs begin with a few base spiral staircase dimensions. While your spiral staircase height is one, the other is spiral staircase diameter, or spiral stair width. Whether youโre looking for a compact spiral stair for a tight space or a code compliant staircase for your business, our SMA certified designers have the right design for you.
Diameters of Paragon Spiral Staircases
Paragon Stairs provides spiral stairs that are safe and reliable, even at our smallest width. The smallest spiral staircase diameter we offer is 3โ6โ. Thisย space saving spiral stairย is perfect for the homeowner looking to maximize their square footage without sacrificing style or safety.
From there, Paragonโs diameters increase in 6โ intervals. Anย International Building Code compliant spiral staircaseย must have at least a 5โ diameter. Our standard diameters range up to 6โ wide, but we are able to go much wider if your custom staircase calls for it.
Staircase Dimensions and Clear Walking Path
Clear Walking Path represents the space that you have to walk up and down the stairs.
The best way to envision the clear walking path of a spiral stair is to use the Sliding Door test. If you have a sliding door in your home, slide it open 17 inches. 17 inches is the clear walking path of our smallest diameter 3โ6โ. As you increase spiral stair diameter in 6โ increments, clear walking path increases in 3โ increments. Here is a list of our diameter and their clear walking paths.
3โ6โ Diameter โ 17 inch clear walking path
4โ0โ Diameter โ 20 inch clear walking path
4โ6โ Diameter โ 23 inch clear walking path
5โ0โ Diameter โ 26 inch clear walking path
5โ6โ Diameter โ 29 inch clear walking path
6โ0โ Diameter โ 32 inch clear walking path
Determining the diameter that is best for you depends on a few variables including the intended use of the stair (will you be carrying items up and down the stair?), how much it will be used (daily, monthly?) as well as budget.
Keep in mind that no matter what diameter of stair you choose, the minimum finished opening for your stair should be at least 2โ bigger than the stair itself.
For example, the smallest stair that we offer is 3 feet 6 inches in diameter. 3โ6โ translates to 42 total inches in diameter and therefore the MINIMUM opening size that you need MUST be 44 inches x 44 inches (44โx44โ). You need at least 44โx44โ opening because youโll need two extra inches for your fingers to travel along the handrail as you walk up and down the stairs. The two extra inches ensures that there will be no finger pinch-points.
If you are putting your spiral through a hole in the floor, here is a quick guide on the MINIMUM opening that you will need for each Paragon diameter. The absolute smallest opening size we can work with is 44 inches x 44 inches.
3โ6โ Diameter (42 inches) โ requires at least a 44 inch x 44 inch floor opening
4โ0โ Diameter (48 inches) โ requires at least a 50 inch x 50 inch floor opening
4โ6โ Diameter (54 inches) โ requires at least a 56 inch x 56 inch floor opening
5โ0โ Diameter (60 inches) โ requires at least a 62 inch x 62 inch floor opening
5โ6โ Diameter (66 inches) โ requires at least a 68 inch x 68 inch floor opening
6โ0โ Diameter (72 inches) โ requires at least a 74 inch x 74 inch floor opening
Why Paragon
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