An International Building Code compliant spiral staircase must have at least a 5′ diameter. Our standard diameters range up to 6′ wide, but we are able to go much wider if your custom staircase calls for it.Click to see full answer. Moreover, how much space do you need for a spiral staircase? For example, if you are using a 3’6” spiral stair to get you access to an attic through a hole in the floor then you would need a finished floor opening of 44 inches x 44 inches. 2. How should I select a spiral stair diameter? Clear Walking Space Guide Stair Diameter Clear Walk Space 5′ 6″ 29″ 6′ 0″ 32″ Secondly, do spiral staircases save space? Space saving is a great reason to consider installing a spiral staircase. However, even if you have great deal of space to work in a spiral staircase can be a preferred option. A larger room will allow you to design a less steep staircase, which will make it more user friendly and easier to ascend. Moreover, how do you measure a spiral staircase? How to Measure for a Spiral Staircase Step 1 – Measure Width and Depth. Begin by measuring both the width and the depth of the opening for your spiral staircase. Step 2 – Measure Floor Height. You will need to measure the actual height. Step 3 – Consider Your Materials. Keep in mind while measuring what kind of stairs you will be installing. How do you measure a spiral staircase handrail? The length of a spiral staircase’s helical handrail can be calculated by the diameter and height of the staircase. Measure the radius of the spiral staircase using your tape measure. Measure the height of the staircase using the same units as you used for the radius. Use the formula:
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