Michael Ellars

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Michael Ellars, AIA, APX, CSI, CDT, LEED AP, CASp

Chapter 11B, Division 4 (Accessible Routes)

2016 CBC Revisions:
Accessibility Preview


Chapter 11B, Division 4 (Accessible Routes) 

Walking Surfaces

11B-403.5.1 Clear width. Except as provided in Sections 11B-403.5.2 and 11B-403.5.3, and unless otherwise specified, the clear width of walking surfaces shall be 36 inches (914 mm) minimum. The clear width for walking surfaces in corridors serving an occupant load of 10 or more shall be 44 inches (1118 mm) minimum. The clear width for aisles shall be 36 inches (914 mm) minimum if serving elements on only one side, and 44 inches (1118 mm) minimum if serving elements on both sides. The clear width for accessible routes to accessible toilet compartments shall be 44 inches (1118 mm) minimum except for door-opening widths and door swings.

Exceptions:
1.The clear width shall be permitted to be reduced to 32 inches (813 mm) minimum for a length of 24 inches (610 mm) maximum provided that reduced width segments are separated by segments that are 48 inches (1219 mm) long minimum and 36 inches (914 mm) wide minimum.
2. The clear width for walking surfaces in corridors serving an occupant load of 10 or more shall be 44 inches (1118 mm) minimum.
3. The clear width for sidewalks and walks shall be 48 inches (1219 mm) minimum. When, because of right-of-way restrictions, natural barriers or other existing conditions, the enforcing agency determines that compliance with the 48-inch (1219 mm) clear sidewalk width would create an unreasonable hardship, the clear width may be reduced to 36 inches (914 mm).
4. The clear width for aisles shall be 36 inches (914 mm) minimum if serving elements on only one side, and 44 inches (1118 mm) minimum if serving elements on both sides.
5. The clear width for accessible routes to accessible toilet compartments shall be 44 inches (1118 mm) except for door-opening widths and door swings.

11B-403.5.1.1 Sidewalks and walks. The clear width for sidewalks and walks shall be 48 inches (1219 mm) minimum. In alterations where existing conditions make provision of 48 inches (1219 mm) minimum clear width infeasible, the clear width for sidewalks and walks shall be permitted to be reduced to 36 inches (914 mm) minimum for a length of 24 inches (610 mm) maximum provided that reduced width segments are separated by segments that are 48 inches (1219 mm) long minimum and 48 inches (1219 mm) wide minimum; existing conditions include, but are not limited to, right-of-way restrictions, utility poles, street lights, and traffic signal hardware.


Door Opening Forces

11B-404.2.9 Door and gate opening force. The force for pushing or pulling open a door or gate shall be as follows:

Exceptions:
1. Exterior doors to machinery spaces including, but not limited to, elevator pits or elevator penthouses; mechanical, electrical or communications equipment rooms; piping or equipment catwalks; electric substations and transformer vaults; and highway and tunnel utility facilities.
2.
When, at a single location, one of every eight exterior door leafs, …

This is another example of eliminating a redundant exception for machinery spaces.


Revisions to Destination-Oriented Elevator Provisions

These changes further tweak the requirements for Destination-Oriented Elevators originally implemented in the 2015 Intervening Code Cycle update.

11B-411.1.2 Car designations. Elevator cars shall be designated with a single alphabetic character. For elevators programmed to the same hall call console or group of hall call consoles, each elevator car shall be designated with a different single alphabetic character.

11B-411.2.1.2.2 Touch screen. Touch screen display shall comply with Section 11B-411.2.1.2.4. The touch screen shall provide written or visual instruction on the screen as to its use.

11B-411.2.1.2.4 Display screen. Upon activation of the accessibility function button, the display screen shall display information on the location and use of the star (*) and minus sign (-) buttons, including but not limited to, operating instructions, user input confirmation, elevator assignment characters, direction to the assigned elevator, and error messages. …

11B-411.2.1.2.5 Audio output. Upon activation of the accessibility function button, the audio output shall provide verbal announcements, including but not limited to, of operating instructions, location and use of the star (*) and minus sign (-) buttons, user input confirmation, announcement of the elevator assignment characters, direction to the assigned elevator, and error messages. …

11B-411.2.1.3.4 Position. Display screens and touch screens shall be positioned so glare is reduced on the screen. The face of individual elements or group of individual elements that are operated by user input Keypads or buttons shall slope away from the user at 15 to 25 degrees from the vertical plane. The face of hall call console assemblies and the face of Touch screens shall be sloped away from the user at 7 to 25 degrees from the vertical plane. Display screens and touch screens shall be positioned so glare is reduced on the screen.