Spiral Staircase Diameter Minimum

Of clear walking path.

Spiral staircase diameter minimum.

Paragon has a wide variety of prefab and custom stairs to fit any design plans. Bs 5395 part 2 1984. 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 usable surface of the stair tread must be a minimum of.

0 in in diameter spiral staircases have 26 in. Much like your well opening your diameter may be defined by your placement of the stair. Minimum stair diameter of 60 for a metal stair and 64 for a wood stair. Based on 598 reviews.

More product details close. Domestic spiral staircases come under 2 aspects of the building regulations. Spiral stair building code compliance. The irc stair code permits a 4 3 8 inch space.

Minimum spiral stair tread width is 26 inches salter s code platforms start at 31 inches wide. Stair balusters shall be spaced so a 4 inch object cannot pass between. Learn about the available dimensions and sizes for spiral staircases. This would be our 1448mm diameter.

Spiral staircase diameter for domestic spiral staircases. Landing width shall not be less than the required staircase width. Headroom minimum of 6 6 riser height cannot exceed 9 1 2. A secondary spiral stair assessing a loft basement or mezzanine will require a 600mm clear tread width.

No matter where your stair is going you will need to keep stair diameter in mind. The walkline is located 50cm 20 from the outer handrail. Although the minimum. Spiral staircases save valuable square meters because they occupy a much smaller area than a conventional staircase.

This spiral staircase meets minimum 2015 irc requirements. The walkline is located 2 3 of the way along the stair width measured towards the inner handrail method 4. For a main stair serving 2 or more habitable rooms you require a 800mm. These spirals are designed to be used by individuals generally familiar with the stair and are classed as secondary or primary.

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. Which is determined by the stair s diameter. The diameter of the staircase determines the width of the stair treads the minimum dimension of which is specified by the irc. Please review technical data sheet for additional information on measurements.