L-Shaped Staircase Calculator (90 degree turn, Quarter turn)
Free professional L-shaped staircase calculator with drawings and 3D — tools to easy find stringer length, landing dimensions, steps rise and run.
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Choose Drawing:
- Side View
- drwStairsFrontViewAlt
- Top View
- Lower Stringer
- Upper Stringer
Calculation results
Staircase Dimensions
- Angle: 32.01 °
- Comfortable Staircase Formula (R + G): 48.75 cm
- Blondel's Formula (2R + G): 67.5 cm
- Rise: 18.75 cm
- Tread Depth: 37.5 cm
- Going: 30 cm
- Number of Steps: 15 pcs.
- Stair Width: 100 cm
- Minimum Throat Depth: 14.1 cm
Materials for construction
Lower Stringers
- Width: 30 cm
- Length: 68.63 cm
- Thickness: 6 cm
- Quantity: 2 pcs.
- Wood Volume: 0.025 m3
Upper Stringers
- Width: 30 cm
- Length: 433.34 cm
- Thickness: 6 cm
- Quantity: 2 pcs.
- Wood Volume: 0.156 m3
Straight Steps
- Tread Depth: 37.5 cm
- Length: 100 cm
- Thickness: 4 cm
- Quantity: 14 pcs.
- Wood Volume: 0.21 m3
Risers
- Width: 14.75 cm
- Length: 100 cm
- Thickness: 2.5 cm
- Quantity: 15 pcs.
- Wood Volume: 0.055 m3
Landing
- Width: 100 cm
- Length: 107.5 cm
- Thickness: 4 cm
- Quantity: 1 pcs.
- Wood Volume: 0.043 m3
Landing Support Joists, Oriented along Lower Stringer
- Width: 15 cm
- Length: 100 cm
- Thickness: 5 cm
- Count: 2 pcs.
- Wood Volume: 0.015 m3
Landing Support Joists, Oriented along Lower Stringer
- Width: 15 cm
- Length: 100 cm
- Thickness: 5 cm
- Count: 2 pcs.
- Wood Volume: 0.015 m3
Balustrade
- Handrail Width: 8 cm
- Handrail Thickness: 4 cm
- Handrail Length: 520.34 cm
- Wood Volume: 0.017 m3
Balusters
- Width: 5 cm
- Length: 86.85 cm
- Quantity: 15 pcs.
- Wood Volume: 0.033 m3
Newel Posts
- Width: 8 cm
- Length: 108.75 cm
- Quantity: 1 pcs.
- Wood Volume: 0.007 m3
Support Posts
- Width: 10 cm
- Length: 52.25 cm
- Quantity: 4 pcs.
- Wood Volume: 0.021 m3
Initial parameters
Display
- Units: cm
- Drawing Color: color
Calculate Total Run Along:
- Upper Stairway: selected
Stairs Dimensions, Stairwell
- Total Rise: 300 cm
- Total Run: 460 cm
- Stair Width: 100 cm
Landing
- Overlap Landing along the Lower Stringer: 0 cm
- Overlap Landing along the Upper Stringer: 0 cm
Steps
- Quantity (Upper Stairway): 12 pcs.
- Quantity (Lower Stairway): 2 pcs.
- Thickness: 4 cm
- Nosing (Tread Overlap): 5 cm
Stringers
- Thickness: 6 cm
- Width: 30 cm
Landing Joists
- Thickness: 5 cm
- Width: 15 cm
Risers
- Thickness: 2.5 cm
Support Posts
- Width: 10 cm
Upper Floor Slab
- Slab Overlap: 0 cm
- Distance from Wall: 0 cm
- Thickness: 20 cm
Balustrade
- Handrail Height: 90 cm
- Baluster Width: 5 cm
- Handrail Thickness: 4 cm
- Handrail Width: 8 cm
Wall
- Thickness: 20 cm
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