• Wooden stairs
  • Three-flight stairs on stringers, rotated by 180°
Calculation of staircase with 180 degrees turn, landings and three flights

Calculation of staircase with 180 degrees turn, landings and three flights

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Specify sizes

Map
DU
cm
  • mm
  • cm
  • m
  • inch
  • ft
CL
paint
  • black and white
  • color
Span
Y
X
Z
Stage
C
15
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
CM
3
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
CB
3
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
W
F
SP
Common for stringers
T
Risers
H
HT
ladder Drawing (side view) ladder Drawing (top view) drwStairsLyingSaddleTAlt drwStairsLyingSaddleMAlt Drawing a second stringer Detail steps

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calculation Results

Common for stringers
  • Width of Board: 12.4 cm
  • Board Width in Sapele: 5.1 cm
  • Thick: 5 cm
  • Angle: 25.1 °
  • Washed down horizontally (oX): 35.6 cm
  • Washed down vertical (oY): 16.7 cm
Top stringer
  • Length: 358.4 cm
  • the Width of a March: 320 cm
  • Elevation of marsh: 150 cm
Intermediate stringer
  • Length: 83.5 cm
  • the Width of a March: 71.1 cm
  • Elevation of marsh: 33.3 cm
Bottom stringer
  • Length: 78.5 cm
  • the Width of a March: 71.1 cm
  • Elevation of marsh: 33.3 cm
Stage
  • Length: 80 cm
  • Thick: 5 cm
  • step Width: 40.6 cm
  • step Height: 16.7 cm
Risers
  • Height: 11.7 cm
  • Length: 80 cm
  • Thick: 2.5 cm
Top. platform
  • Width: 85 cm
  • Length: 80 cm
  • Height: 100 cm
Lower platform
  • Width: 80 cm
  • Length: 85 cm
  • Height: 50 cm

Materials of construction

Top stringer
  • Width: 12.4 cm
  • Length: 358.4 cm
  • Thick: 5 cm
  • Number: 2 PCs
  • Объём: 0.045 m3
Intermediate stringer
  • Width: 12.4 cm
  • Length: 83.5 cm
  • Thick: 5 cm
  • Number: 2 PCs
  • Объём: 0.01 m3
Bottom stringer
  • Width: 12.4 cm
  • Length: 78.5 cm
  • Thick: 5 cm
  • Number: 2 PCs
  • Объём: 0.01 m3
Stage
  • Width: 40.6 cm
  • Length: 80 cm
  • Thick: 5 cm
  • Number: 13 PCs
  • Объем: 0.211 m3
Top. platform
  • Width: 85 cm
  • Length: 80 cm
  • Thick: 5 cm
  • Number: 1 PCs
  • Объём: 0.034 m3
Lower platform
  • Width: 80 cm
  • Length: 85 cm
  • Thick: 5 cm
  • Number: 1 PCs
  • Объём: 0.034 m3
Risers
  • Height: 11.7 cm
  • Length: 80 cm
  • Thick: 2.5 cm
  • Number: 15 PCs
  • Объем: 0.035 m3

Specified Dimensions

Span
  • clearance: 250 cm
  • span Length: 400 cm
  • Width of stairs: 80 cm
Stage
  • Total number: 15 PCs
  • the Number of intermediate: 3 PCs
  • Number bottom: 3 PCs
  • Thick: 5 cm
  • edge guide: 5 cm
Common for stringers
  • Thick: 5 cm
Risers
  • Thick: 2.5 cm

help

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!

 

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.

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