Straight Closed Stringer Staircase 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
Staircase Dimensions, Stairwell
Y
X
Z
Steps
QS
18
SW
SF
SP
Stringers
T
HE
FWR
BWR
Risers
H
HT
Upper Floor Slab
SX
ST
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): 32.69 °
  • Comfortable Staircase Formula (R + G): 45.15 cm
  • Blondel's Formula (2R + G): 62.79 cm
  • Rise (Step Height): 17.65 cm
  • Tread Depth (Step Width): 33.3 cm
  • Going: 27.5 cm
  • Number of Steps: 16 pcs.
  • Stairway Width: 100 cm
  • Minimum Throat Depth: 30.38 cm
Materials for construction
Stringers
  • Width: 31.35 cm
  • Length: 540.75 cm
  • Thickness: 6 cm
  • Quantity: 2 pcs.
  • Volume: 0.203 m3
Steps
  • Tread Depth: 33.3 cm
  • Length: 88 cm
  • Thickness: 4 cm
  • Quantity: 16 pcs.
  • Volume: 0.188 m3
Risers
  • Width: 13.65 cm
  • Length: 88 cm
  • Thickness: 1.8 cm
  • Quantity: 16 pcs.
  • Volume: 0.035 m3
Balustrade
  • Handrail Width: 8 cm
  • Handrail Thickness: 4 cm
  • Balustrade Length: 538.67 cm
  • Volume: 0.017 m3
Balusters
  • Width: 5 cm
  • Length: 86.85 cm
  • Quantity: 17 pcs.
  • Volume: 0.037 m3
Initial parameters
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): 4 cm
Stringers
  • Thickness: 6 cm
Risers
  • Thickness: 1.8 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 Open 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 7. Input the closed stringers parameters — thickness, T, width, WI, protrusion from bottom step, HE*, reserve throat depth from nosing line, FWR, stringer reserve throat depth from layout line, BWR.
    * includes the step thickness and nosing
  • Step 8. Input the balustrade parameters — baluster width, BA, baluster height, RH, handrail thickness, RT, handrail width, RW.
  • Step 9. Input the upper floor slab parameters* — thickness, ST, overlap, SX.
    * required for visualization only
  • Step 10. Input the wall parameter* — thickness, WT.
    * required for visualization only
  • Step 11. Please check all entered values, click the «Calculate» button and get a Straight Housed Box Staircase design.

 

Plans of Straight Routing Stringer Staircase — Layout Notations 

Drawing Straight Closed Stringer Staircase
Drawing Straight Staircase
Optimal Step Size
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