U-Shaped Mono Stringer Metal Staircase with Double Winders Calculator
Two Quarter-Turn Steel Mono Stringer Staircase with Winders
U-shaped staircase - the best choice when the opening is very limited, a 180° turn allows you to almost halve the length of the staircase.
Winder steps - the most perspective type of turning, in terms of opening space saving.
This design allows installing a more steps per flight, compared to the variant with a landing.
The main weakness of the construction is the turning space - winder steps have different tread depths, which reduce from the outside to the inside. At the point of connection to the support post, the tread depth is minimal, causing problems when persons movement in opposite directions, and quite traumatic.
U-shaped, 180° (Half Turn)
- Straight
- L-shaped, 90° (Quarter Turn)
- U-shaped, 180° (Half Turn)
- Spiral
Error calculationPlease check your input
SVG vector drawings, 3D AR augmented reality
SVG vector drawings, 3D AR augmented reality
Choose Drawing:
SVG vector drawings, 3D AR augmented reality
Calculation results
Staircase Dimensions, Stairwell
- Angle (Slope/Pitch): 33.12 °
- Comfortable Staircase Formula (R + G): 44.7 cm
- Blondel's Formula (2R + G): 62.35 cm
- Rise (Step Height): 17.65 cm
- Going: 27.06 cm
- Number of Steps: 16 pcs.
- Stairway Width: 100 cm
- Correct a Going (Lower Stairway): 0 cm
- Correct a Going (Middle Stairway): 0 cm
- Correct a Going (Upper Stairway): 0 cm
Materials for construction
Step № 1
- Length: 100 cm
- Tread Depth: 31.69 cm
- Thickness: 4 cm
- Volume: 0.013 m3
Step № 2
- Length: 100 cm
- Tread Depth: 31.7 cm
- Thickness: 4 cm
- Volume: 0.013 m3
Step № 3
- Length: 100 cm
- Tread Depth: 39.35 cm
- Thickness: 4 cm
- Volume: 0.016 m3
Step № 4
- Length: 109.04 cm
- Tread Depth: 51.42 cm
- Thickness: 4 cm
- Volume: 0.022 m3
Step № 5
- Length: 145.02 cm
- Tread Depth: 57.23 cm
- Thickness: 4 cm
- Volume: 0.033 m3
Step № 6
- Length: 151.42 cm
- Tread Depth: 46.25 cm
- Thickness: 4 cm
- Volume: 0.028 m3
Step № 7
- Length: 120.85 cm
- Tread Depth: 45.49 cm
- Thickness: 4 cm
- Volume: 0.022 m3
Step № 8
- Length: 105.21 cm
- Tread Depth: 39.16 cm
- Thickness: 4 cm
- Volume: 0.016 m3
Step № 9
- Length: 100 cm
- Tread Depth: 39.64 cm
- Thickness: 4 cm
- Volume: 0.016 m3
Step № 10
- Length: 109.94 cm
- Tread Depth: 50.7 cm
- Thickness: 4 cm
- Volume: 0.022 m3
Step № 11
- Length: 145.5 cm
- Tread Depth: 56.05 cm
- Thickness: 4 cm
- Volume: 0.033 m3
Step № 12
- Length: 151.42 cm
- Tread Depth: 48.55 cm
- Thickness: 4 cm
- Volume: 0.029 m3
Step № 13
- Length: 119.26 cm
- Tread Depth: 47.72 cm
- Thickness: 4 cm
- Volume: 0.023 m3
Step № 14
- Length: 103.99 cm
- Tread Depth: 38.54 cm
- Thickness: 4 cm
- Volume: 0.016 m3
Step № 15
- Length: 100 cm
- Tread Depth: 32.66 cm
- Thickness: 4 cm
- Volume: 0.013 m3
Step № 16
- Length: 100 cm
- Tread Depth: 32.65 cm
- Thickness: 4 cm
- Volume: 0.013 m3
Riser № 1
- Length: 100 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 2
- Length: 100 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 3
- Length: 100 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 4
- Length: 101.44 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 5
- Length: 114.84 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.003 m3
Riser № 6
- Length: 141.42 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.003 m3
Riser № 7
- Length: 115.37 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.003 m3
Riser № 8
- Length: 101.71 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 9
- Length: 100 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 10
- Length: 101.71 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 11
- Length: 115.38 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.003 m3
Riser № 12
- Length: 141.42 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.003 m3
Riser № 13
- Length: 113.78 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.003 m3
Riser № 14
- Length: 100.97 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 15
- Length: 100 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Riser № 16
- Length: 100 cm
- Width: 13.65 cm
- Thickness: 1.8 cm
- Volume: 0.002 m3
Initial parameters
Display
- Units: cm
- Color drawing: color
Staircase Type
- Left Turn: selected
Staircase Dimensions, Stairwell
- Length (along Lower Stairway): 200 cm
- Length (along Upper Stairway): 200 cm
- Opening between Stairways: 80 cm
Staircase Construction Mode
- Fixed Total Run: selected
Staircase Dimensions, Stairwell
- Total Rise: 300 cm
- Stairway Width: 100 cm
Steps
- Minimum Tread Depth at the Connection to the Support Post: 10 cm
- Minimum Tread Depth at the Connection to the Stringer: 4 cm
- Rise: 18 cm
- Thickness: 4 cm
- Tread Overhang (Nosing): 3 cm
- Tread Overhang (Side): 3 cm
Risers
- Thickness: 1.8 cm
Stringers
- Tube Height: 6 cm
- Tube Width: 4 cm
- Quantity: 3 pcs.
Upper Floor Slab
- Thickness: 20 cm
Walls
- Thickness: 20 cm
Choose saving method
Bookmark a Website
Keep a reference to the result of the calculation in the section "My bookmarks" in your account.
Scan QR-code
Get a link to a calculation with parameters by scanning a QR code
Select the subscription for additional features Kalk.Pro
Any active subscription not disables advertising on the site
More than 10,000 users have already used advanced access to successfully create their project. Detailed drawings and estimates of the project save up to 70% of the time on the preparation of construction elements, as well as prevent unnecessary consumption of materials.
More information about subscriptions can be found here.