U-Shaped Staircase with Double Landing Calculator

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the Calculator will be available after changes in the relevant parameters.
Click "Calculate" to open the options window.
Switch interface
Display
DU
CL
Staircase Type
LF
RG
Stairs Dimensions, Stairwell
Y
X
Z
Calculate Total Run Along
FTP
FMD
FBT
Steps
QT
5
QM
4
QB
5
SW
SF
SO
SP
Stringers
T
WI
Support Joists
JT
JW
Risers
H
HT
AS
Support Posts
SB
Upper Floor Slab
ST
Balustrade
RH
BA
RT
RW
Wall
WT
Switch interface
Choose Drawing:
Switch interface
Distance: 0
Calculation results
Staircase Dimensions
  • Angle (Slope/Pitch): 27.43 °
  • Comfortable Staircase Formula (R + G): 51.65 cm
  • Blondel's Formula (2R + G): 69.29 cm
  • Rise (Step Height): 17.65 cm
  • Tread Depth (Step Width): 39.5 cm
  • Going: 34 cm
  • Number of Steps: 14 pcs.
  • Stairway Width: 100 cm
  • Minimum Throat Depth: 14.34 cm
Materials for construction
Lower Stringers
  • Width: 30 cm
  • Length: 189.69 cm
  • Thickness: 4 cm
  • Quantity: 2 pcs.
  • Volume: 0.046 m3
Middle Stringers
  • Width: 30 cm
  • Length: 160.67 cm
  • Thickness: 4 cm
  • Quantity: 2 pcs.
  • Volume: 0.039 m3
Upper Stringers
  • Width: 30 cm
  • Length: 198.98 cm
  • Thickness: 4 cm
  • Quantity: 2 pcs.
  • Volume: 0.048 m3
Straight Steps
  • Tread Depth: 39.5 cm
  • Length: 100 cm
  • Thickness: 4 cm
  • Quantity: 14 pcs.
  • Volume: 0.221 m3
Risers
  • Width: 13.65 cm
  • Length: 100 cm
  • Thickness: 2.5 cm
  • Quantity: 16 pcs.
  • Volume: 0.055 m3
Lower Landing
  • Width: 100 cm
  • Length: 105.5 cm
  • Thickness: 4 cm
  • Quantity: 1 pcs.
  • Volume: 0.042 m3
Upper Landing
  • Width: 100 cm
  • Length: 105.5 cm
  • Thickness: 4 cm
  • Quantity: 1 pcs.
  • Volume: 0.042 m3
Balustrade
  • Handrail Width: 8 cm
  • Handrail Thickness: 4 cm
  • Balustrade Length: 572.07 cm
  • Volume: 0.018 m3
Balusters
  • Width: 5 cm
  • Length: 86.79 cm
  • Quantity: 15 pcs.
  • Volume: 0.033 m3
Newel Posts
  • Width: 8 cm
  • Length: 107.65 cm
  • Quantity: 2 pcs.
  • Volume: 0.014 m3
Lower Landing Support Posts
  • Width: 8 cm
  • Length: 101.88 cm
  • Quantity: 4 pcs.
  • Volume: 0.026 m3
Upper Landing Support Posts
  • Width: 8 cm
  • Length: 190.12 cm
  • Quantity: 4 pcs.
  • Volume: 0.049 m3
Lower Landing Support Joists
  • Width: 15 cm
  • Length: 97 cm
  • Thickness: 5 cm
  • Quantity: 5 pcs.
  • Volume: 0.036 m3
Upper Landing Support Joists
  • Width: 15 cm
  • Length: 97 cm
  • Thickness: 5 cm
  • Quantity: 5 pcs.
  • Volume: 0.036 m3
Initial parameters
Display
  • Units: cm
  • Drawing Color: color
Stairs Dimensions, Stairwell
  • Total Rise: 300 cm
  • Total Run: 270 cm
  • Stairway Width: 100 cm
Calculate Total Run Along
  • Upper Stairway:  selected
Steps
  • Quantity (Upper Stairway): 5 pcs.
  • Quantity (Middle Stairway): 4 cm
  • Quantity (Lower Stairway): 5 pcs.
  • Thickness: 4 cm
  • Tread Overhang (Nosing): 3 cm
  • Tread Overhang (Side): 3 cm
Stringers
  • Thickness: 4 cm
  • Width: 30 cm
Support Joists
  • Thickness: 5 cm
  • Width: 15 cm
Risers
  • Thickness: 2.5 cm
Support Posts
  • Width: 8 cm
Upper Floor Slab
  • Thickness: 20 cm
Balustrade
  • Balustrade Height: 90 cm
  • Baluster Width: 5 cm
  • Handrail Thickness: 4 cm
  • Handrail Width: 8 cm
Wall
  • Thickness: 20 cm
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How to calculate Two-Quarter-Turn U-Shaped Stair with Landings?

  • Step 1. Choose the measurement units, DU — mm, cm, m, inches, feet.
  • Step 2. Choose the drawing color, CL — monochrome, color.
  • Step 3. Choose the staircase type — left turn, LF, right turn, RG.
  • Step 4. Choose how to calculate total run — along upper stairway, FTP, along intermediate stairway, FMD, along lower stairway, FBT.
  • Step 5. Input the stair, stairwell dimensions — total rise, Y*, total run, X, stairwat width, Z.
    * from the 1nd floor level to the 2nd floor level
    * total rise = stairwell height (if top step is on the 2nd floor level)
  • Step 6. Input the landing support joists parameters — thickness, JT, width, JW.
  • Step 7. Input the support posts parameter — width, SB.
  • Step 8. Input the steps parameters — number of steps on upper stairway, QT, number of steps on intermediate stairway, QM, number of steps on lower stairway, QB, thickness, SW, nosing, SF*.
    * nosing = tread overlap
  • Step 8.1. Select to install the top step below 2nd floor level or keep it at the 2nd floor level, SP.
  • Step 9. Select to install risers or not, H.
  • Step 9.1. Input the risers parameter — thickness, HT.
  • Step 10. Input the stringers parameters — thickness, T, width, WI.
  • Step 11. Input the balustrade parameters — baluster width, BA, baluster height, RH, handrail thickness, RT, handrail width, RW.
  • Step 12. Input the upper floor slab parameter* — thickness, ST.
    * required for visualization only
  • Step 13. Input the wall parameter* — thickness, WT.
    * required for visualization only
  • Step 14. Please check all entered values, click the «Calculate» button and get a U-Shaped Staircase with Double Landing design.

 

Plans of U-Shaped Staircase with Double Turning Landigs — Layout Notations 

Drawing U-shaped Staircase with Double Landing
Drawing U-shaped Staircase with Double Landing
Optimal Step Size
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