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.

If you do it manually you need to start from landing platform coming down. D1 internal diameter this is the diameter of the central column. There are typically two stringers one on either side of the stairs. Stringer or string the structural member that supports the treads.

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. Otherwise a simple way is to use a stair calculator you find on the web. Spiral stair profile diagram with full dimensions spiral staircase handrail true radius calculator enter actual rise of handrail for entered angle of rotation.

Refer to the figure adjacent to the calculator as a reference. 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. With daring shapes and diverse configurations they can also be iconic objects. Z thickness of steps usually is a geometric parameter of the material e g.

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. A rail fixed parallel above the pitch line at the sides of. The walkine is located 50 cm 20 from the inner handrail or in the centre if the stair width is less than 1m 40. Here below an example of a popular spiral staircase design.

The walkline is located 50cm 20 from the outer handrail. H the height of the staircase usually determined by the distance between the floors in your house. Though the treads may be supported many other ways. Flat radius to handrail.

The stringers are notched so that the risers and treads fit into them. Draw a rough sketch to see where the entry step will be. The stair calculator is an online tool for calculating various parameters involved in the construction of stairs.