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Spiral staircase minimum diameter uk.
Minimum spiral stair tread width is 26 inches salter s code platforms start at 31 inches wide.
Established in 1966 spiral are the uk s longest standing manufacturer of high quality bespoke staircases and are leaders in the marketplace with a reputation for stunning design premium quality and highly skilled craftsmanship.
Stair balusters shall be spaced so a 4 inch object cannot pass between.
Approved document k requires that if a staircase design uses consecutive tapered treads they.
Landing width shall not be less than the required staircase width.
This would be our 1448mm diameter.
In addition to a category a stair this private stair can also provide the main access to the upper floor of a private dwelling.
Spiral staircase diameter for domestic spiral staircases.
0 in in diameter spiral staircases have 26 in.
The irc stair code permits a 4 3 8 inch space.
800mm 900 in scotland.
Uk building regulations require a minimum clear width on each tread of 600mm for staircases serving one room only.
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A minimum 2000mm diameter spiral is required to meet this 2100mm diameter in scotland.
Domestic spiral staircases come under 2 aspects of the building regulations.
This is a category b spiral staircase under bs5395.
For a main stair serving 2 or more habitable rooms you require a 800mm.
Of clear walking path.
Minimum going from the centre of the tread.
The document governing spiral staircase building regulations in the uk is british standard 5395 part 2.
These spirals are available in 2 diameters 1400mm and 1600mm with clear widths of 607 and 707mm respectively.
This type of spiral staircase is only available as a custom made option models such as the apollo and prisma are examples of this type of staircase.
Minimum and maximum rise per tread.
Please review technical data sheet for additional information on measurements.
This document is summarised in the table below with categories given for each spiral application and the relevant maximum riser heights and minimum widths.
Indoor and outdoor products.
Uk stockists of loft stairs spiral staircase kits modular staircases space saver stairs.
Bs 5395 part 2 1984.
This spiral staircase meets minimum 2015 irc requirements.
A secondary spiral stair assessing a loft basement or mezzanine will require a 600mm clear tread width.
This states that a spiral serving 1 habitable room should have a 600mm clear width max rise of 220mm and centre going of more than 145mm.
Available in a range of materials including wooden and metal.
