The rules and regulations for spiral staircases are still laid out by the british standard 5395 although the scottish regulations still require the 900mm clear tread width for a main stair as opposed to the 800mm mentioned in the bs.
Spiral staircase regulations scotland.
Overall staircases in scotland are likely to be larger in width and length and take up more space than those elsewhere in the uk.
Uk staircase regulations there are three main building regulations that relate to staircases generally referred to as part k m b.
K1 building regulations is the approved document which covers stairs ladders and ramps.
When considering the building regulations for spiral staircases in the uk it is worth being aware that these can differ in scotland.
In k1 section 1 21 spiral and helical stairs the regulations refer you to a british standard bs5395 2 1984.
Domestic spiral staircases come under 2 aspects of the building regulations.
If your spiral staircase complies with bs5395 then it also complies with k1 building regs.
Spiral staircases page of continental stairs.