1023.9.4 Signage requirements.

Floor identification signs required by Section 1023.9.2 shall comply with all of the following requirements:

   1.   The signs shall be a minimum size of 18 inches (457.2 mm) by 12 inches (304.8 mm).

   2.   The top of the signs shall be located 5 feet (1524 mm) above the floor landing in a position that is readily visible when the doors are in the open and closed positions.

   3.   The number designating the floor level shall be not less than 5 inches (127 mm) in height and located in the center of the sign.

   4.   Other lettering and numbers shall be not less than 1 inch (25.4 mm) in height.

   5.   Characters and their background shall have a nonglare finish. Characters shall contrast with their background, with either light characters on a dark background or dark characters on a light background.

   6.   Where signs required by Section 1023.9 are installed in the interior exit stairways and ramps of buildings subject to Section 1025, the signs shall be made of the same luminous materials as required by Section 1025.4.

1023.9.5 Directions to openable doors.

Where doors serving interior exit stairways are locked on the stair side, signage shall be posted in compliance with Sections 1031.4.1, 1031.4.2 and 1031.4.3.

1023.10 Elevator lobby identification signs.

At landings in interior exit stairways where two or more doors lead to the floor level, any door with direct access to an enclosed elevator lobby shall be identified by signage located on the door or directly adjacent to the door stating "Elevator Lobby." Signage shall be in accordance with Section 1023.9.4, Items 4, 5 and 6.

1023.11 Smokeproof enclosures and pressurization alternative.

In buildings required to comply with Section 403 or 405, each of the interior exit stairways and ramps serving a story with a floor surface located more than 75 feet (22 860 mm) above the lowest level of Fire Department vehicle access or more than 30 feet (9144 mm) below the finished floor of a level of exit discharge serving such stories shall be protected by a smokeproof enclosure or pressurization alternative in accordance with Section 909.20.