Straight Zig Zag Staircase Calculator

The most accurate and reliable calculation of straight stairs on polyline kosoura online using a 3D calculator – professional calculation of metal stairs with drawings.

Error calculationPlease check your input
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
Staircase Dimensions, Stairwell
Y
X
Z
Steps
QS
18
SW
SF
SO
SP
Stringers
STH
STW
Jumpers
BTH
BTW
BAD
Risers
H
HT
AS
FP
Upper Floor Slab
SX
ST
SFX
Balustrade
RH
BA
RT
RW
Walls
WT
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Choose Drawing:
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Distance: 0
Calculation results
Staircase Dimensions, Stairwell
  • Angle (Slope/Pitch): 32.38 °
  • Comfortable Staircase Formula (R + G): 45.47 cm
  • Blondel's Formula (2R + G): 63.12 cm
  • Rise (Step Height): 17.65 cm
  • Tread Depth (Step Width): 32.63 cm
  • Going: 27.82 cm
  • Number of Steps: 16 pcs.
  • Stairway Width: 100 cm
Materials for construction
Stringers
  • Tube Height: 6 cm
  • Tube Width: 4 cm
  • Total Length: 1447.11 cm
  • Total Parts: 64 pcs.
Jumpers
  • Tube Height: 4 cm
  • Tube Width: 4 cm
  • Jumper Length: 86 cm
  • Quantity: 16 pcs.
  • Total Length: 1376 cm
Steps
  • Tread Depth: 32.63 cm
  • Length: 100 cm
  • Thickness: 4 cm
  • Quantity: 16 pcs.
  • Volume: 0.209 m3
Risers
  • Width: 13.65 cm
  • Length: 100 cm
  • Thickness: 1.8 cm
  • Quantity: 16 pcs.
  • Volume: 0.039 m3
Balustrade
  • Handrail Width: 8 cm
  • Handrail Thickness: 4 cm
  • Balustrade Length: 543.78 cm
  • Volume: 0.017 m3
Balusters
  • Width: 5 cm
  • Length: 86.85 cm
  • Quantity: 17 pcs.
  • Volume: 0.037 m3
Initial parameters
Display
  • Units: cm
  • Color drawing: color
Staircase Type
  • Left Turn:  selected
Staircase Dimensions, Stairwell
  • Total Rise: 300 cm
  • Total Run: 450 cm
  • Stairway Width: 100 cm
Steps
  • Quantity: 16 pcs.
  • Thickness: 4 cm
  • Tread Overhang (Nosing): 3 cm
  • Tread Overhang (Side): 3 cm
  • Top Step below 2nd Floor Level:  selected
Stringers
  • Tube Height: 6 cm
  • Tube Width: 4 cm
Jumpers
  • Tube Height: 4 cm
  • Tube Width: 4 cm
Risers
  • Thickness: 1.8 cm
  • End with Riser: 0 cm
Upper Floor Slab
  • Slab Overhang: 100 cm
  • Thickness: 20 cm
Balustrade
  • Balustrade Height: 90 cm
  • Baluster Width: 5 cm
  • Handrail Thickness: 4 cm
  • Handrail Width: 8 cm
Walls
  • Thickness: 20 cm
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How to Calculate Straight Zig-Zag Stringer Stair?

  • 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. Input the stair, stairwell dimensions — total rise, Y*, total run, X**, stair 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)
    ** total run = stairwell length (if upper floor slab non-overlapping staircase)
    *** stair width = stairway width
  • Step 5. Input the steps parameters — quantity, QS, thickness, SW, nosing, SF*.
    *nosing = tread overlap
  • Step 5.1. Select to install the top step below 2nd floor level or keep it at the 2nd floor level, SP.
  • Step 6. Select to install risers or not, H.
  • Step 6.1. Input the risers parameter — thickness, HT.
  • Step 6.2. Select to install risers behind the steps or not, AS.
  • Step 7. Input the stringers parameters — tube height, STH, tube width, STW.
  • Step 8. Input the jumpers parameters — tube height, BTH, tube width, BTW.
  • Step 8.1. Select to install additional jumpers or not, BAD.
  • Step 9. Input the balustrade parameters — baluster width, BA, baluster height, RH, handrail thickness, RT, handrail width, RW.
  • Step 10. Input the upper floor slab parameters* — thickness, ST, overlap, SX.
    * required for visualization only
  • Step 10.1. Select to install fixing to slab or not, SFX.
  • Step 11. Input the wall parameter* — thickness, WT.
    * required for visualization only
  • Step 12. Please check all entered values, click the «Calculate» button and get a Straight Steel Zigzag Staircase design.

 

Plans of Straight Etch Stringer Staircase — Layout Notations 

Drawing Straight Zigzag Staircase
Drawing Straight Staircase
Optimal Step Size
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