Steel Spiral Staircase Design Calculation

Flat radius to handrail.

Steel spiral staircase design calculation.

Spiral staircases save valuable square meters because they occupy a much smaller area than a conventional staircase. Otherwise a simple way is to use a stair calculator you find on the web. If you do it manually you need to start from landing platform coming down. Though the treads may be supported many other ways.

Draw the spiral staircase plan spiral staircase design calculation. 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 walkine is located 50 cm 20 from the inner handrail or in the centre if the stair width is less than 1m 40. With daring shapes and diverse configurations they can also be iconic objects.

The stringers are notched so that the risers and treads fit into them. The walkline is located 2 3 of the way along the stair width measured towards the inner handrail method 4. Spiral stair profile diagram with full dimensions spiral staircase handrail true radius calculator enter actual rise of handrail for entered angle of rotation. Stringer or string the structural member that supports the treads.

Draw a rough sketch to see where the entry step will be. Z thickness of steps usually is a geometric parameter of the material e g. D1 internal diameter this is the diameter of the central column. 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 fraction to decimal conversion table for common fractions used in measurements is also provided at the bottom of the page. A rail fixed parallel above the pitch line at the sides of. 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.

The walkline is located 50cm 20 from the outer handrail. Here below an example of a popular spiral staircase design. There are typically two stringers one on either side of the stairs.