Three-flight staircase with landings (180 degree turn)

Three-flight staircase with landings (180 degree turn)

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Choose Drawing:
Distance: 0

Calculation results

Staircase
  • 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 construction

Stringers 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 parameters

Display
  • 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 angle29 - 35 degrees
Riser height15 - 17 cm / 7 3/4″ max
The tread depth27 - 30 cm / min 10 inches, 254 mm
The tread thickness4 - 5 cm
The riser thickness2.5 - 3 cm
The stringer thickness 5 - 7 cm
Stairways width94 - 110 cm / min 36 inches
The number of steps per flightfrom 3 to 18
The width of the overhang of a tread (nosings)3 cm/ between 19 mm and 32 mm
The height of handrails90 cm
The headroomnot 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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Specify dimensions
Display
DU
cm
CL
color
Type of stairs
LF
RG
Stairs dimensions, Stairwell
Y
X
Z
Calculate Total Run along:
FTP
FMD
FBT
Steps
QT
7
QM
6
QB
7
SW
SF
SP
Stringers
T
WI
Landing Joists
JT
JW
Risers
H
HT
Landing Support Post
SB
Upper Floor Slab
ST
Balustrade
RH
BA
RT
RW
Wall
WT