Section 1011. Stairways

1011.1 to 1011.4 {As in IBC}

1011.5 Stair treads and risers. {As in IBC}

1011.5.1 Dimension reference surfaces. {As in IBC}

1011.5.2 Riser height and tread depth. {As in IBC}

Exceptions:

1. - 2. {As in IBC}

3. In Group R-3 occupancies, in dwelling units in Group R-2 occupancies, and in Group U occupancies that are accessory to a Group R-3 occupancy or accessory to individual dwelling units in Group R-2 occupancies:

a. the maximum riser height is 8¼ inches (210 mm),

b. the minimum tread depth is 9 inches (229 mm),

c. the minimum winder tread depth at the walk line is 9 inches (229 mm),

d. the minimum winder tread depth is 6 inches (152 mm), and

e. a nosing not less than ¾ inch (19 mm) but not more than 1¼ inches (32 mm) must be provided on stairways with solid risers where the tread depth is less than 11 inches (279 mm).

4. For the replacement of existing stairways, see the Maryland Building Rehabilitation Code, set forth in COMAR 09.12.58.

5. {As in IBC}

1011.5.3 to 1011.5.5 {As in IBC}

1011.6 to 1011.16 {As in IBC}