7.2.2.2.4* Winders.

7.2.2.2.4.1 Where specified in Chapters 11 through 43, winders shall be permitted in stairs, provided that they meet the requirements of 7.2.2.2.4.2 and 7.2.2.2.4.3.

7.2.2.2.4.2 New winders shall have a tread depth of not less than 6 in. (150 mm) and a tread depth of not less than 11 in. (280 mm) at a point 12 in. (305 mm) from the narrowest edge.

7.2.2.2.4.3 Existing winders shall be permitted to be continued in use, provided that they have a tread depth of not less than 6 in. (150 mm) and a tread depth of not less than 9 in. (230 mm) at a point 12 in. (305 mm) from the narrowest edge.

Reffering to 101-Table 7.2.8.4(b), Winders is permitted for/as "replacement fire escape stairs" if "serving 10 or fewer occupants"

21.2.2.3.3 Winders complying with 7.2.2.2.4 shall be permitted. (Existing Ambulatory Health Care Occupancies)

24.2.5.5 Spiral stairs and winders in accordance with 7.2.2.2.3 and 7.2.2.2.4 shall be permitted within a single dwelling unit. (One- and Two-Family Dwellings)

26.2.2.4 Winders in accordance with 7.2.2.2.4 shall be permitted. (Lodging or Rooming Houses)

30.2.2.3.4 Winders complying with 7.2.2.2.4 shall be permitted within each dwelling unit. (New Apartment Buildings)

31.2.2.3.4 Winders complying with 7.2.2.2.4 shall be permitted. (Existing Apartment Buildings)

32.2.2.6.2 Existing winders complying with 7.2.2.2.4 shall be permitted to remain only in conversions. (New Residential Board and Care Occupancies)

33.2.2.6.2 Winders complying with 7.2.2.2.4 shall be permitted. (Existing Residential Board and Care Occupancies)