Steel Spiral Staircase Design Calculation

There are typically two stringers one on either side of the stairs.

Steel spiral staircase design calculation.

Stringer or string the structural member that supports the treads. Otherwise a simple way is to use a stair calculator you find on the web. Though the treads may be supported many other ways. Draw a rough sketch to see where the entry step will be.

D1 staircase overall diameter determined my the distance between end points of two steps which point opposite directions. A rail fixed parallel above the pitch line at the sides of. The walkline is located 50cm 20 from the outer handrail. The stringers are notched so that the risers and treads fit into them.

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. Draw the spiral staircase plan spiral staircase design calculation. H the height of the staircase usually determined by the distance between the floors in your house. Z thickness of steps usually is a geometric parameter of the material e g.

The walkline is located 2 3 of the way along the stair width measured towards the inner handrail method 4. Spiral staircases save valuable square meters because they occupy a much smaller area than a conventional staircase. A fraction to decimal conversion table for common fractions used in measurements is also provided at the bottom of the page. The walkline is located half way along the stair width method 3.

Refer to the figure adjacent to the calculator as a reference. 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. Spiral stair profile diagram with full dimensions spiral staircase handrail true radius calculator enter actual rise of handrail for entered angle of rotation.

D1 internal diameter this is the diameter of the central column. The stair calculator is an online tool for calculating various parameters involved in the construction of stairs. With daring shapes and diverse configurations they can also be iconic objects.