Spiral Staircase Minimum Diameter

Minimum spiral stair tread width is 26 inches salter s code platforms start at 31 inches wide.

Spiral staircase minimum diameter. Within each range you can select various balustrade designs finishes and options to make a unique stair. As the diagram below illustrates the clear tread width does not refer to the radius the centre column and handrails must be factored in to establish the actual diameter. A 5 foot diameter or larger stair will provide this standard stair width. The total diameter of your spiral staircase however may be limited by the amount of space you have available.

Stair balusters shall be spaced so a 4 inch object cannot pass between. Minimum stair diameter of 60 for a metal stair and 64 for a wood stair. Give your staircase a minimum diameter of 26 inches 66 cm. Horizontal distance between two step nosings.

External diameter of the staircase column. The angle is a multiple of 360. Generally speaking the wider your staircase is the better it will look and the safer it will be. Spiral stair building code compliance.

The upper floor counts as a step. Number of steps that make up the staircase. An international building code compliant spiral staircase must have at least a 5 diameter. In buildings a flight of stairs refers to a complete series of steps that connects between two distinct floors.

The classic the universal the z and the economy. Headroom minimum of 6 6 riser height cannot exceed 9 1 2. The range of spiral staircases on offer from enzie has dramatically expanded over recent years giving you the ability to choose from four distinctly different designs. Its ideal value is 280 mm 11.

The going must be between 230 and 330 mm 9 and 13. Stairs stairways staircases or stairwells are building components that provide users with a means of vertical movement with the distribution of separate and individual vertical steps. Staircase dimensions and clear walking path clear walking path represents the space that you have to walk up and down the stairs. 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.

Our standard diameters range up to 6 wide but we are able to go much wider if your custom staircase calls for it. Angle of the steps. A primary spiral staircase within a dwelling will need an 800mm clear tread width. Landing width shall not be less than the required staircase width.