Steel Spiral Staircase Design Calculation

Spiral stair profile diagram with full dimensions spiral staircase handrail true radius calculator enter actual rise of handrail for entered angle of rotation.

Steel spiral staircase design calculation.

If you do it manually you need to start from landing platform coming down. 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. The walkline is located 2 3 of the way along the stair width measured towards the inner handrail method 4. The stair calculator is an online tool for calculating various parameters involved in the construction of stairs.

The walkine is located 50 cm 20 from the inner handrail or in the centre if the stair width is less than 1m 40. A rail fixed parallel above the pitch line at the sides of. The walkline is located 50cm 20 from the outer handrail. D1 internal diameter this is the diameter of the central column.

Spiral staircases save valuable square meters because they occupy a much smaller area than a conventional staircase. There are typically two stringers one on either side of the stairs. Otherwise a simple way is to use a stair calculator you find on the web. The walkline is located half way along the stair width method 3.

Stringer or string the structural member that supports the treads. With daring shapes and diverse configurations they can also be iconic objects. A fraction to decimal conversion table for common fractions used in measurements is also provided at the bottom of the page. Z thickness of steps usually is a geometric parameter of the material e g.

Though the treads may be supported many other ways. 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. Refer to the figure adjacent to the calculator as a reference. D1 staircase overall diameter determined my the distance between end points of two steps which point opposite directions.

Here below an example of a popular spiral staircase design. Draw the spiral staircase plan spiral staircase design calculation. Flat radius to handrail.