Spiral and Winder Stairs

Spiral and Winder Stairs are added to the available stair configurations to meet the requirements of constructing stairs associating with specialized building elements.

2D Drawing Compliance

Stair representations in 2D drawings comply with China drafting standards, where:

• On placement (lower) floor - shows the stair assembly up to cut plane (optional, show outline of stair assembly above)
• On floor above placement floor - shows the treads that are above the cut line of the floor below
• For multiple views of floor below - uses a fixed distance from upper floor, set on the stair element