You should also read the typical residential guidelines for more conventional stairs The staircase comes in white or grey complete with 11 treads plus substantial landing platform both finished in quality beech multiplex For the newer building codes, these are the code sections.
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How to measure the diameter of the spiral stairs the diameter is the width of the staircase from the edge of the treads from one side to the other as shown below:
The standard spiral staircases consist of the following main components
Center tube, railing, platform, and steps You can choose your step surface, railing model, and surface treatment All spiral staircases are individually customized which means we design them after your needs The recommended minimum diameter for a frequently used spiral staircase is at least 150 cm, to ensure a comfortable and safe tread
Spiral staircases may also need a minimum clear stair width of 60 cm These points are a guidance, and it will be the decision of the building inspectors to judge whether your spiral stair meets the regulations. The basic model includes 12 steps + 1 universal landing + railing with handrail.but you can personalise your staircase thanks to the accessories For the spiral staircases exterior the minimum ideal opening should be 5 cm larger than the diameter of the staircase
