The simplest definition of your diameter is the width of your stair as spiral stairs are round stairs.
Spiral staircase diameter minimum.
Much like your well opening your diameter may be defined by your placement of the stair.
Headroom minimum of 6 6 riser height cannot exceed 9 1 2.
Please review technical data sheet for additional information on measurements.
Learn about the available dimensions and sizes for spiral staircases.
Bs 5395 part 2 1984.
Stair balusters shall be spaced so a 4 inch object cannot pass between.
Domestic spiral staircases come under 2 aspects of the building regulations.
The diameter of the staircase determines the width of the stair treads the minimum dimension of which is specified by the irc.
Minimum spiral stair tread width is 26 inches salter s code platforms start at 31 inches wide.
Landing width shall not be less than the required staircase width.
Spiral staircases save valuable square meters because they occupy a much smaller area than a conventional staircase.
The walkline is located half way along the stair width method 3.
0 in in diameter spiral staircases have 26 in.
These spirals are designed to be used by individuals generally familiar with the stair and are classed as secondary or primary.
The usable surface of the stair tread must be a minimum of.
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Spiral staircase diameter for domestic spiral staircases.
Tread path between handrail and center column a minimum 26 center tread width 7 1 2 in from the narrow end of the tread d.
The irc stair code permits a 4 3 8 inch space.
A secondary spiral stair assessing a loft basement or mezzanine will require a 600mm clear tread width.
Which is determined by the stair s diameter.
The walkine is located 50 cm 20 from the inner handrail or in the centre if the stair width is less than 1m 40.
This would be our 1448mm diameter.
Although the minimum.
The walkline is located 2 3 of the way along the stair width measured towards the inner handrail method 4.
Minimum stair diameter of 60 for a metal stair and 64 for a wood stair.
Spiral stair building code compliance.
More product details close.
The walkline is located 50cm 20 from the outer handrail.
Of clear walking path.
This spiral staircase meets minimum 2015 irc requirements.
Paragon has a wide variety of prefab and custom stairs to fit any design plans.
