Space-saving steel staircase KOS in black (beech lacquered) without railing and 7 steps

Technical data for the staircase model steel staircase KOS in black (beech lacquered) without railing and 7 steps – as shown in the photo.

Generally

Staircase type: Metal stringer staircase / steel stringer staircase

Kit: three divided cheeks – easy to assemble and screw together

different floor heights:

• 112 cm to 140 cm with 6 steps / 7 inclines
• 128 cm to 160 cm with 7 steps / 8 inclines
• 144 cm to 180 cm with 8 steps / 9 inclines
• 160 cm to 200 cm with 9 steps / 10 inclines
• 176 cm to 220 cm with 10 steps / 11 inclines
• 192 cm to 240 cm with 11 steps / 12 inclines
• 208 cm to 260 cm with 12 steps / 13 inclines
• 224 cm to 280 cm with 13 steps / 14 inclines
• 240 cm to 300 cm with 14 steps / 15 inclines
• 256 cm to 320 cm with 15 steps / 16 inclines
• 275 cm to 340 cm with 16 steps / 17 inclines

Material: Powder-coated metal/steel

Cheek thickness: approx. 8 mm (2 x 4 mm)

Colour:  black (RAL 9005)

Angle of inclination: 30 – 42 degrees

Variants for the final treatment of the steps: 

• untreated
• colorless oiled
• clear lacquer

Dimensions of the staircase

Unloading: 

• For a floor height of 112 cm to 140 cm = projection of 140 cm to 156 cm
• With a floor height of 128 cm to 160 cm = projection of 163 cm to 182 cm
• With a floor height of 144 cm to 180 cm = projection of 187 cm to 208 cm 
• With a floor height of 160 cm to 200 cm = projection of 210 cm to 234 cm
• With a floor height of 176 cm to 220 cm = projection of 234 cm to 260 cm
• With a floor height of 192 cm to 240 cm = projection of 257 cm to 286 cm 
• With a floor height of 208 cm to 260 cm = projection of 280 cm to 312 cm 
• With a floor height of 224 cm to 280 cm = projection of 304 cm to 338 cm
• With a floor height of 240 cm to 300 cm = projection of 327 cm to 364 cm
• With a floor height of 256 cm to 320 cm = projection of 351 cm to 390 cm
• With a floor height of 275 cm to 340 cm = projection of 374 cm to 416 cm

Width/Minimum dimensions of the ceiling opening: must be at least as wide as the desired stair width plus any railings. Note: the minimum width of the ceiling opening is calculated automatically when the railing is selected. HOWEVER: a gap between the handrail and the ceiling opening/wall for gripping the handrail is not included. Recommendation: approx. 4 cm

Existing length/depth of the ceiling opening: the length of the ceiling opening is essential to ensure sufficient headroom and accessibility of the stairs, given your room height (floor height) minus the ceiling thickness.

Maximum ceiling opening: any

Number of levels: 6, 7 , 8, 9, 10, 11, 12, 13, 14, 15, 16

Gradients: 7, 8 , 9, 10, 11, 12, 13, 14, 15, 16, 17

Stair widths (steps + stringers): 70 , 75, 80, 85, 90, 95, 100 cm 

Step depth: 29 cm

Walkable step depth: 23.4 cm to 26 cm

Rise height: 18 cm

Wood types: Beech laminated timber , oak laminated timber, rustic oak laminated timber

Wood thickness: 40 mm

Railing variants + additional railing widths to be taken into account:

• Metal railing: Metal posts 40 x 40 mm square, powder-coated in RAL to match the staircase – to be mounted laterally on the stringer
  • Metal railing left or right: + 5 cm
  • Metal railings on both sides: + 10 cm

• Designer railing: Stainless steel posts 42 x 4 mm round untreated – to be mounted laterally on the side of the cheek
  • Designer railing left or right: + 7 cm
  • Designer railing on both sides: + 14 cm