On a spiral staircase drawing with a diameter of 1500 mm this chart is saying that we can have 12 or 13 steps per circle. Now that you know the spiral staircase diameter, you have to find out how many steps you need per turn of 360 degrees (the total degrees of a circle). Mm (or round diameter 1600 mm) the diameter of your staircase will be 1500 xġ500 mm (or 1500 mm diameter). If your stairwell square opening is for example 1600 x 1600 This is to be able to fit the staircase in an easy way and to allow for the hand to grab the handrail without touching the slab. Remember that the spiral staircase diameter will have to be 100 mm smaller than the ceiling opening. If the arrival floor of the staircase is a mezzanine and not a spiral staircase opening, you do not need to check this. The number of steps per turn (360 degrees circle) depends on the spiral staircase diameter you need.įirstly check the measures of the ceiling opening (stairwell opening) you have. Here below you find some useful indications to determine how many steps you need on your spiral staircase plan. Square staircases are in fact a little bit different, we will deal with this in In this article we are explaining how the round spiral staircases work. Height (staircase elevation) but also by the geometry of the circular shape The number of steps is in fact limited by the floor to floor Spiral staircase with glass railing Oak & glass spiral staircase Determine the location of the top landing platform. Likewise with this spiral staircase design guide you will learn how to design (and build) a perfect spiral staircase step by step. There are indeed some geometrical rules you need to follow and take into account to design a spiral staircase in the correct way and with the right dimensions. In terms of design, there are a number of technical issues you need to take into account when designing a spiral staircase.
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