Steel Spiral Staircase Design Calculation

The walkline is located 2 3 of the way along the stair width measured towards the inner handrail method 4.

Steel spiral staircase design calculation.

Flat radius to handrail. If you do it manually you need to start from landing platform coming down. The walkine is located 50 cm 20 from the inner handrail or in the centre if the stair width is less than 1m 40. Otherwise a simple way is to use a stair calculator you find on the web.

With daring shapes and diverse configurations they can also be iconic objects. Stringer or string the structural member that supports the treads. Though the treads may be supported many other ways. The walkline is located 50cm 20 from the outer handrail.

Spiral staircases save valuable square meters because they occupy a much smaller area than a conventional staircase. The stringers are notched so that the risers and treads fit into them. Refer to the figure adjacent to the calculator as a reference. Z thickness of steps usually is a geometric parameter of the material e g.

A fraction to decimal conversion table for common fractions used in measurements is also provided at the bottom of the page. The stair calculator is used for calculating stair rise and run stair angle stringer length step height tread depth and the number of steps required for a given run of stairs. H the height of the staircase usually determined by the distance between the floors in your house. The walkline is located half way along the stair width method 3.

There are typically two stringers one on either side of the stairs. For convenience and flexibility this stair stringer calculator comes in two forms the automatic and manual click on the icons to determine the best calculator to use for your stairs. Spiral stair profile diagram with full dimensions spiral staircase handrail true radius calculator enter actual rise of handrail for entered angle of rotation. D1 staircase overall diameter determined my the distance between end points of two steps which point opposite directions.

Draw the spiral staircase plan spiral staircase design calculation. D1 internal diameter this is the diameter of the central column. Here below an example of a popular spiral staircase design.