Three-flight staircase with landings (U shaped) metric, +3D

Kalk.Pro
Wooden staircases
Three-flight staircase with landings (stringers, 180° turn)

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the Calculator will be available after changes in the relevant parameters.

Click "Calculate" to open the options window.

Choose Drawing:

Stair Drawing (side view)
Stair Drawing (top view)
Stringer of Bottom Flight (Pattern)
Stringer of Intermediate Flight (Pattern)
Stringer of Upper Flight (Pattern)

Distance: 0

Calculation resultsStaircase

Pitch (Stair Angle): 30.47 °
Rise: 16.67 mm
Going: 28.33 mm
Number of Steps: 15 pcs.
Stairs Width: 100 mm
Minimum Stringer Throat Depth (width): 15.63 mm

Materials for constructionStringers of bottom flight

Width: 30 mm
Length: 162.33 mm
Thickness: 6 mm
Quantity: 2 pcs.
Wood Volume: 0.058 m3

Stringers of intermediate flight

Width: 30 mm
Length: 140.68 mm
Thickness: 6 mm
Quantity: 2 pcs.
Wood Volume: 0.051 m3

Upper Stringers

Width: 30 mm
Length: 206.43 mm
Thickness: 6 mm
Quantity: 2 pcs.
Wood Volume: 0.074 m3

Steps

Tread Depth: 35.83 mm
Tread Length: 100 mm
Tread Thickness: 4 mm
Quantity: 15 pcs.
Wood Volume: 0.215 m3

Risers

Width: 12.67 mm
Length: 100 mm
Thickness: 2.5 mm
Quantity: 17 pcs.
Wood Volume: 0.054 m3

Landing (bottom)

Width: 100 mm
Length: 107.5 mm
Thickness: 4 mm
Quantity: 1 pcs.
Wood Volume: 0.043 m3

Landing (upper)

Width: 100 mm
Length: 107.5 mm
Thickness: 4 mm
Quantity: 1 pcs.
Wood Volume: 0.043 m3

Balustrade

Handrail Width: 8 mm
Handrail Thickness: 4 mm
Balustrade Length: 525.47 mm
Wood Volume: 0.017 m3

Balusters

Width: 5 mm
Length: 86.83 mm
Quantity: 16 pcs.
Wood Volume: 0.035 m3

Newel Posts

Width: 8 mm
Length: 106.67 mm
Quantity: 2 pcs.
Wood Volume: 0.014 m3

Bottom Landing Support Posts

Width: 10 mm
Length: 96 mm
Quantity: 4 pcs.
Wood Volume: 0.038 m3

Upper Landing Support Posts

Width: 10 mm
Length: 179.33 mm
Quantity: 4 pcs.
Wood Volume: 0.072 m3

Bottom Landing Joists

Width: 15 mm
Length: 100 mm
Thickness: 5 mm
Quantity: 5 pcs.
Wood Volume: 0.037 m3

Upper Landing Joists

Width: 15 mm
Length: 100 mm
Thickness: 5 mm
Quantity: 5 pcs.
Wood Volume: 0.037 m3

Initial parametersDisplay

Units: cm mm
Color drawing: paint mm

Stairs dimensions, Stairwell

Total Rise (from finish floor - to finish floor): 300 mm
Total Run: 270 mm
Staircase Width: 100 mm

Calculate Total Run along:

Upper stair flight: selected

Steps

Number of Upper Steps: 6 pcs.
Number of Steps (intermediate flight): 5 mm
Number of Bottom Steps: 6 pcs.
Tread Thickness: 4 mm
Nosing (Tread Overlap): 5 mm

Stringers

Thickness: 6 mm
Width: 30 mm

Landing Joists

Thickness: 5 mm
Width: 15 mm

Risers

Thickness: 2.5 mm

Landing Support Post

Post Width: 10 mm

Upper Floor Slab

Thickness: 20 mm

Balustrade

Handrails Height: 90 mm
Baluster Width: 5 mm
Handrail Thickness: 4 mm
Handrail Width: 8 mm

Wall

Thickness: 20 mm

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Online calculator calculates U-shaped stairs with 180 degrees turn, three flights and landing. Determines the angle of the stairs, the sizes of steps, run and rise, material consumption, creates all necessary drawings and 3D model of the staircase.
All you need to do is enter the initial dimensions and start the calculation. Within a few seconds you will receive the calculation results for your future 180 degrees turn staircase with landings and three flights.
The program will do all the work for you, save a lot of your time!
Please make sure your stair design complies with all local building codes and regulations requirements! It is very crucial step.

Calculation of 180 degrees turn wooden stairs with three flights and landing?

Simply enter the initial dimensions of your future staircase. You need to measure some dimenions , and some of them you can choose from optimum dimensional ranges for the convenience and safety of the stairs:

Option feature	Optimal
The staircase angle	29 - 35 degrees
Riser height	15 - 17 cm / 7 3/4″ max
The tread depth	27 - 30 cm / min 10 inches, 254 mm
The tread thickness	4 - 5 cm
The riser thickness	2.5 - 3 cm
The stringer thickness	5 - 7 cm
Stairways width	94 - 110 cm / min 36 inches
The number of steps per flight	from 3 to 18
The width of the overhang of a tread (nosings)	3 cm/ between 19 mm and 32 mm
The height of handrails	90 cm
The headroom	not less than 203 cm / 6 feet 8 inches

You need to measure the height and length of the future of the U-shaped staircase with three flights. Height is measured from the clean floor of the top floor ceiling of the lower floor, between which it is planned to build three-flight staircase.

Changing the source data - for example, the number of stages, you will be able to pick the perfect design stairs for your home.

I advise you to choose for each flight of stairs an odd number of steps to make the stairs easier to climb and descend.