Stairway/Platform System

11 Pitch 30° 38° 45° 60° First step depth 160 mm 160 mm 160 mm 160 mm Second step depth 320 mm 240 mm 240 mm 240 mm Pitch 30° 38° 45° 60° Step depth 320 mm 320 mm 240 mm 160 mm Stringer profile The following profile is recommended as a stringer for use with all Stairway Assembly Sets: ■ ■ Profile 8 120x40 light (0.0.416.66) Steps European Standard EN ISO 14122-3 requires an overlap of at least 10 mm on steps. This means that different step depths are required for different pitches. Step depth 160 mm ■ ■ Step Profile 8 160 (0.0.650.14) ■ ■ Step Profile Bracket Set 160 (0.0.647.13) Step depth 240 mm ■ ■ Step Profile 8 240 (0.0.650.15) ■ ■ Step Profile Bracket Set 240 (0.0.647.15) Step depth 320 mm ■ ■ 2 x Step Profile 8 160 (0.0.650.14) ■ ■ Step Profile Bracket Set 320 (0.0.647.14) ■ ■ Step Spacer Profile 24x8 (0.0.650.76) Stairway Assembly Sets PP The Stairway/Platform System includes various Assembly Sets PP for different stairway pitches. ■ ■ Stairway Assembly Set PP 30° (0.0.653.14) ■ ■ Stairway Assembly Set PP 38° (0.0.653.15) ■ ■ Stairway Assembly Set PP 45° (0.0.653.16) ■ ■ Stairway Assembly Set PP 60° (0.0.653.17) Note: You can find a formula for calculating the length of the stringer profile alongside the Stairway Assembly Sets PP on page 14. When using the Stairway Assembly Set PP with a 60° pitch, it is important to ensure that the top step is 240 mm deep rather than 160 mm. Lower end of stairway When using Stairway Assembly Sets PP, two steps of different depths are installed at the foot of the stairway.