Michael Ellars

michaelellars.com

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

Chapter 11B, Division 4 (Accessible Routes)

2013 CBC Revisions:
Intervening Code Cycle


Chapter 11B, Division 4 (Accessible Routes) 

Toilet Room Route

11B-403.5.1 Clear width. Except as provided in Sections 11B-403.5.2 and 11B-403.5.3, the clear width of walking surfaces shall be 36 inches (914 mm) minimum.

Exceptions: … 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.

Carried forward California amendment from 2010 CBC requiring wider path of travel through multiple accommodation toilet facilities. Potentially significant future impact for restrooms designed between January 1, 2014 (effective date of 2013 CBC), and July 1, 2015 (effective date of intervening code cycle) that were designed with the 36-inch clear width previously allowed.

Eliminated Door Clear Width Exception

11B-404.2 Manual doors, doorways, and manual gates.

11B-404.2.3 Clear width. Door openings shall provide a clear width of 32 inches (813 mm) minimum. …

Exceptions: … 3. Doors, doorways, and gates not providing full user passage shall provide a clear width of 20 inches (510 mm) minimum.

Eliminated Exception 3 to Section 11B-404.2.3, which was redundant with other technical requirements of Section 11B-404 that limit applicability to doors intended for human passage. This change allows non-passage doors to be of any size necessary rather than requiring them to be at least 20 inches wide.

Door and Gate Opening Force

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

3. Required fire doors: the minimum opening force allowable by the appropriate administrative authority, not to exceed 15 pounds (66.7 N).

Clarified language that Section 11B-404.2.9 does apply to fire doors (by previous California amendment). California amendments modify the model code language of 2010 ADA Standards in a way that made the removed text confusing.

Ramp Handrails at Fixed Seating

11B-405 Ramps

11B-405.8 Handrails. Ramp runs shall have handrails complying with Section 11B-505.

Exceptions: … 2. Handrails are not required at ramps immediately adjacent to fixed seating in assembly areas.

Eliminated conflict with Section 11B-505.2, which more specifically deals with ramped aisle handrails in assembly areas.

Eliminated Grooved Borders at Curb Ramps

11B-406.5.11 Reserved. Grooved border. Curb ramps shall have a grooved border 12 inches (305 mm) wide along the top of the curb ramp at the level surface of the top landing and at the outside edges of the flared sides. The grooved border shall consist of a series of grooves ¼ inch (6.4 mm) wide by ¼ inch (6.4 mm) deep, at ¾ inch (19 mm) on center.

Exceptions:
1. At parallel curb ramps, the grooved border shall be on the upper approach immediately adjacent to the curb ramp across the full width of the curb ramp.
2. A grooved border shall not be required at blended transitions.

Section 11B-406.5.11 revised to “reserved” and Figures 11B-406.2.2, 11B-406.3.2, 11B-406.5.3, 11B-406.5.10, and 11B-406.6 are revised to eliminate the grooved border at the top of the ramp and flared sides. Per DSA comment, “Grooves cannot be reliably detected by people with vision impairments and can be confused with grooves between sidewalk panels and cracks in the sidewalk. Grooves can generally only be detected when a cane is kept in constant contact with the ground when this method is used to scan the environment. In addition snow, ice, dirt, weeds and other debris can collect in grooves and obscure any warning intended. The cost associated with providing the grooved borders in new construction and alterations outweighs the negligible benefit grooves may provide. These findings are documented in studies commissioned by the U. S. Access Board - Detectable Warnings; Synthesis of U. S. and International Practice and U.S. Department of Transportation - Designing Sidewalks and Trails for Access, Part II of II: Best Practices Design Guide.”


Figure 11B-406.2.2 Sides of Curb Ramps


Figure 11B-406.3.2 Parallel Curb Ramps


Figure 11B-406.5.3 Landings at the Top of Curb Ramps


Figure 11B-406.5.10 Diagonal or Corner Type Curb Ramps


Figure 11B-406.6 Islands in Crossings

Counter Slope Figure


Figure 11B-406.5.8 Counter Slope of Surfaces Adjacent to Curb Ramps

Revised Figure number for “Counter Slope of Surfaces Adjacent to Curb Ramps” to Figure 11B-406.5.8 to correspond to the related Section number (but no change to the figure itself).

Destination-Oriented Elevators

Exceptions and other language for destination-oriented elevators previously contained at various sub-sections of Section 11B-407, as provided by the 2010 ADA Standards model code, have been eliminated (“reserved”) in favor of a new Section 11B-411 that consolidates the requirements for destination-oriented elevators. Section 11B-411 is about 5 pages of regulations similar to those of Section 11B-407, but with features that are unique to destination-oriented elevators. Unless specifically noted, references to Section 11B-407 or its subsections indicate that the requirement for a destinaton-oriented elevator is the same as the requirement for a “standard” elevator.

11B-411 Destination-oriented elevators.

Related Definition Revisions

ACCESSIBILITY FUNCTION BUTTON. [DSA-AC]
A button on an elevator hall call console in a destination-oriented elevator system that when pressed will activate a series of visual and verbal prompts and announcements providing instruction regarding hall call console operation and direction to an assigned elevator.
DESTINATION-ORIENTED ELEVATOR. [DSA-AC]
Destination-oriented elevators are operated by the user selecting a destination floor at a hall call console located at or near an elevator landing. The destination-oriented elevator system then assigns an elevator car which transports the user to the selected destination floor. Destination-oriented elevators do not provide floor selection within elevator cars.
HALL CALL CONSOLE. [DSA-AC]
An elevator call user interface exclusive to a destination-oriented elevator system that requires the user to select a destination floor prior to entering the elevator car.

11B-411.1 General. Destination-oriented elevators shall comply with Section 11B-411 and with ASME A17.1. They shall be passenger elevators as classified by ASME A17.1. Elevator operation shall be automatic.

11B-411.1.1 Floor designations. In facilities served by destination-oriented elevator systems, floor designations shall be numeric characters only. Floor designations shall be “one” (1) or “zero” (0) at the main entry level and shall increase by one for each successive higher story or level. The initial floor below the main entry level shall be designated “minus one” (-1) and the designation for each successive lower story or level shall decrease by one. Stories or levels shall not be designated by alphabetic characters.

Exceptions:
1. In existing facilities where new elevators are installed or existing elevators are altered into a destination-oriented elevator system, levels within stories, such as mezzanines located above or below the main entry level shall be permitted to be designated with an alphanumeric character such as “M2”, indicating “mezzanine” and the “story number”, respectively, in which it is located, provided there is no duplication with alpha-numeric designations of elevator cars in the facility.
2. Non-successive floor numbering shall be permitted where a specific floor number is omitted or where a floor is frequented only by service personnel for maintenance, repair or occasional monitoring of equipment.

11B-411.1.2 Car designations. Elevator cars shall be designated with a single alphabetic character.

Exception: Elevator systems with more than 26 elevators shall be permitted to use alpha-numeric designations such as “A1.”

11B-411.2 Elevator landing requirements. Elevator landings shall comply with Section 11B-411.2.

11B-411.2.1 Hall call consoles. Hall call consoles shall comply with Sections 11B-411.2.1 and 11B-309.

11B-411.2.1.1 Location. Hall call consoles shall be wall-mounted. On floors with a building entry, including parking and transfer levels, each hoistway entrance shall be adjacent to a hall call console. On other floors, a minimum of one hoistway entrance shall be adjacent to a hall call console.

Exception: Hall call consoles beyond those required by Section 11B-411.2.1.1 shall be permitted to be provided outside the elevator landing and to be wall-mounted, pedestal-mounted, or mounted on a kiosk or security turnstile.

11B-411.2.1.2 Required features. Hall call consoles shall include a touch screen or keypad with display screen, an accessibility function button, and audio output loudspeaker.

11B-411.2.1.2.1 Keypads. Keypads shall be in a 12-key ascending telephone keypad layout. Characters and symbols shall be centered on the corresponding button. The number five key shall have a single raised dot. The dot shall have a base diameter of 0.118 inch (3 mm) minimum and 0.120 inch (3.05 mm) maximum and a height of 0.025 inch (0.6 mm) minimum and 0.037 inch (0.9 mm) maximum. Keypads shall have a star (star) on the lower left button and a minus sign (-) on the lower right button. From any level above and below the main egress level, when the star button is pressed an elevator shall be dispatched to the main egress level.

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-411.2.1.2.3 Accessibility function button. The accessibility function button shall be identified by the International Symbol of Accessibility and a raised indication. The International Symbol of Accessibility shall comply with Section 11B-703.7.2.1, and shall be 5/8 inch (15.9 mm) minimum in height. The indication shall be three raised dots. Each dot shall have a base diameter of 0.059 inch (1.5 mm) minimum and 0.063 inch (1.6 mm) maximum and a height of 0.025 inch (0.6 mm) minimum and 0.037 inch (0.9 mm) maximum. The dots shall be spaced 1/4 inch (6.4 mm), measured center to center, in the form of an equilateral triangle with a vertex pointing up. The accessibility function button shall not be provided with a key repeat function.


Figure 11B-411.2.1.2.3 Destination-Oriented Elevator Accessibility Function Button Indication

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 (star) and minus sign (-) buttons, user input confirmation, elevator assignment characters, direction to the assigned elevator, and error messages. The display screen shall comply with Section 11B-411.2.1.2.4.

11B-411.2.1.2.4.1 Contrast. Display screens shall provide contrast with light characters and symbols on a dark background or dark characters and symbols on a light background. The background shall be solid and static.

11B-411.2.1.2.4.2 Size. Elevator assignment characters shall be 1 inch high (25 mm) minimum.

11B-411.2.1.2.4.3 Duration. Elevator assignment characters shall be displayed for a minimum of 5 seconds.

11B-411.2.1.2.5 Audio output. Upon activation of the accessibility function button, the audio output shall provide verbal announcements of operating instructions, location and use of the star (star) and minus sign (-) buttons, user input confirmation, announcement of the elevator assignment characters, direction to the assigned elevator, and error messages. Audio output shall be recorded or digitized human speech, and shall be delivered through a loudspeaker. Auditory volume shall be at least 10 dB above ambient sound level, but shall not exceed 80 dB, measured 36 inches (914 mm) in front of the console. At hall call console locations where the ambient sound level varies, auditory volume shall be maintained at the required volume by an automatic gain control or shall be set at not less than 75 dB.

11B-411.2.1.3 Arrangement. Hall call console arrangement of required features shall comply with Section 11B-411.2.1.3.

11B-411.2.1.3.1 Keypad call console arrangement. Where keypad call consoles are provided, the display screen shall be located directly above the keypad. The accessibility function button shall be located directly below the keypad at a height of 36 inches (914 mm) to 42 inches (1067 mm) above the finish floor.

11B-411.2.1.3.2 Touch screen call console arrangement. Where touch screen call consoles are provided, the touch screen shall be located directly above the accessibility function button. The accessibility function button shall be located at a height of 36 inches (914 mm) to 42 inches (1067 mm) above the finish floor.

11B-411.2.1.3.3 Proximity of required elements. Required features shall be provided on a hall call console assembly or as individual elements grouped in close proximity.

11B-411.2.1.3.4 Position. The face of individual elements or group of individual elements that are operated by user input 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.

11B-411.2.1.4 Additional features. Hall call console additional features, if provided, shall comply with Sections 11B-309 and 11B-411.2.1.4.

11B-411.2.1.4.1 Hall call console additional buttons. Hall call console buttons provided in addition to the accessibility function button and keypad buttons shall comply with Section 11B-411.2.1.4.1. Buttons in addition to the accessibility function button are not permitted on hall call consoles using a touch screen.

11B-411.2.1.4.1.1 Arrangement. Buttons shall be arranged in columns to the right of the keypad with a minimum horizontal spacing of 1.5 times the horizontal spacing between the numeric keys and with the same vertical spacing as the numeric keys.

11B-411.2.1.4.1.2 Identification. Buttons shall be identified by raised characters and symbols, white on a black background, complying with Section 11B-703.2 and Braille complying with Section 11B-703.3. Identification shall be placed immediately to the left of the control button to which the designation applies.

11B-411.2.1.4.2 Security or access controls. Security or access control system card readers associated with elevator operation shall be in close proximity to each hall call console in a consistent manner throughout the facility.

11B-411.2.1.5 Button requirements. Keypad buttons, the accessibility function button, and additional hall call console buttons shall comply with Section 11B-411.2.1.5.

11B-411.2.1.5.1 Size. Buttons shall have square shoulders, be 3/4 inch (19.1 mm) minimum in the smallest dimension and shall be raised 1/8 inch (3.2 mm) plus or minus 1/32 inch (0.8 mm) above the surrounding surface. The buttons shall be activated by a mechanical motion that is detectable.

11B-411.2.1.5.2 Color. Characters and symbols on buttons, where provided, shall be white on a black background.

11B-411.2.1.6 Identification of floors served. In buildings with two or more elevator banks, each serving a different group of specific floors, hall call consoles located on floors with a building entry, including parking and transfer levels, shall be provided with signage complying with Sections 11B-703.2, 11B-703.3, and 11B-703.5 on the surface of or above the hall call console stating “FLOORS n1 - n2,” where n1 - n2 represents the range of floors served. Characters shall be white on a black background. When the accessibility function button is pressed, the audio output shall provide a verbal announcement of the floors served by the elevator group.

11B-411.2.1.7 Elevator car assignment. When the accessibility function button is pressed, elevator car assignment shall comply with Section 11B-411.2.1.7.

11B-411.2.1.7.1 Assignment by keypad hall call console. The audio output shall provide verbal instruction for the user to enter a destination floor. The selected destination floor shall be confirmed by verbal announcement and on the display screen. Verbal and visible indication of an invalid input shall be provided. The display screen shall indicate the elevator assignment characters and a verbal announcement shall be made of the assigned elevator responding to the call. Visual and verbal direction to the assigned elevator shall be provided.

11B-411.2.1.7.2 Assignment by touch screen hall call console. The audio output shall provide verbal instruction for the user to press the accessibility function button as a response to verbal direction in order to select the destination floor. The selected destination floor shall be confirmed by verbal announcement and on the display screen. Verbal and visible indication of an invalid input shall be provided. The display screen shall indicate the elevator assignment characters and a verbal announcement shall be made of the assigned elevator responding to the call. Visual and verbal direction to the assigned elevator shall be provided.

Exception. In addition to assignment by Section 11B-411.2.1.7.2, a verbal announcement providing the user with an option to select an alternative mode of operation shall be permitted. Alternative operation shall be by one of the following options:
1. Virtual keypad. The size of the keypad shall be a nominal 4 inches (102 mm) wide by 5 inches (127 mm) high in a 12-key ascending telephone keypad layout centered in the console. Characters and symbols shall be centered on the corresponding button. Keypads shall have a star (star) on the lower left button and a minus sign (-) on the lower right button. Operation shall be by contact with the touch screen with a press on the key. The audio output shall provide user input confirmation after each key is pressed. Keys shall not be provided with a key repeat function. From any level above and below the main egress level, when the star button is pressed an elevator shall be dispatched to the main egress level.
2. Gesture-based mode of operation. Operation shall be by contact with the touch screen, without specific contact with an icon, and using established non-proprietary gestures for selection and input, including but not limited to tapping, sliding, and tap-hold contact release to select. The audio output shall provide verbal direction on use of the touch screen, and indication of floor selection options until assignment to the elevator is given.

11B-411.2.1.7.3 Assignment by security credential. If a security system or other form of access control system is provided, the audio output shall provide a verbal announcement and direction to the location of the access control activation sensor, such as “present security credential at the sensor immediately to the left.” Upon presentation of security credential, the destination floor shall be confirmed by verbal announcement and on the display screen. The display screen shall indicate the elevator assignment characters and a verbal announcement shall be made of the assigned elevator responding to the call. Visual and verbal direction to the assigned elevator shall be provided.

11B-411.2.1.7.4 Adjacency assignment. The system shall assign an elevator car immediately to the left or right of the hall call console.

Exception: The most adjacent elevator serving the selected floor shall be assigned by hall call consoles located outside the elevator landing.

11B-411.2.2 Elevator car identification at elevator landings. Elevator car identification shall comply with Section 11B-411.2.2.

11B-411.2.2.1 Visible identification. Above or adjacent to each elevator car entrance there shall be a visible identification fixture with a car designation character. The identification fixture shall be 80 inches (2032 mm) minimum above the finish floor or ground to the bottom of the fixture. The characters on the fixture shall be upper case with a height of 4 inches (102 mm) minimum complying with Sections 11B-703.5.1, 11B-703.5.3, 11B-703.5.4, 11B-703.5.7, and 11B-703.5.8.

Exception: Existing buildings shall be permitted to have a visible identification fixture with a car designation character adjacent to each elevator car entrance centered at 72 inches (1829 mm) above the finish floor or ground. The character on the fixture shall be upper case with a height of 21/2 inches (64 mm) minimum complying with Sections 11B-703.5.1, 11B-703.5.3, 11B-703.5.4, 11B-703.5.7, and 11B-703.5.8.

11B-411.2.2.2 Verbal identification. When the accessibility function button is pressed, verbal announcement of the car designation shall be provided at the elevator car entrance upon arrival. Audio output shall be recorded or digitized human speech, and shall be delivered through a loudspeaker. The verbal annunciator shall have a frequency of 300 Hz minimum and 3000 Hz maximum. Auditory volume shall be at least 10 dB above ambient sound level, but shall not exceed 80 dB, measured 36 inches (914 mm) in front of the elevator entrance and at 48 inches (1219 mm) above the floor. At elevator entrances where the ambient sound level varies, auditory volume shall be maintained at the required volume by an automatic gain control or shall be set at not less than 75 dB.

11B-411.2.3 Signs on jambs of elevator hoistway entrances. Signs on jambs of elevator hoistway entrances shall comply with Section 11B-411.2.3.


Figure 11B-411.2.3 Floor Designation and Car Designation Signs on Jambs of Destination-Oriented Elevator Hoistway Signs

11B-411.2.3.1 Floor designation signs. Floor designation signs complying with Sections 11B-703.2 and 11B-703.4.1 shall be provided on both jambs of elevator hoistway entrances. Signs shall be provided in both raised characters and Braille. Raised characters shall be 2 inches (51 mm) high. A raised star placed to the left of the floor designation, shall be provided on both jambs at the main entry level. The outside diameter of the star shall be 2 inches (51 mm) and all points shall be of equal length. Raised characters, including the star, shall be white on a black background. Braille complying with Section 11B-703.3 shall be placed below the corresponding raised characters and the star. The Braille translation for the star shall be “MAIN”. Applied plates are acceptable if they are permanently fixed to the jamb.

11B-411.2.3.2 Car designation signs. Car designation signs complying with Sections 11B-703.2 and 11B-703.4.1 shall be provided on both jambs of the hoistway immediately below the floor designation. Signs shall be provided in both raised characters and Braille. Raised characters shall be 2 inches (51 mm) high. Raised characters shall be white on a black background. Braille complying with Section 11B-703.3 shall be placed below the corresponding raised characters. Applied plates are acceptable if they are permanently fixed to the jamb.

11B-411.3 Elevator door requirements. Hoistway and car doors shall comply with Section 11B-411.3.

11B-411.3.1 Type. Elevator door type shall comply with Section 11B-407.3.1.

11B-411.3.2 Operation. Elevator hoistway and car doors shall open and close automatically.

11B-411.3.3 Reopening device. Elevator doors shall be provided with a reopening device complying with Section 11B-411.3.3 that shall stop and reopen a car door and hoistway door automatically if the door becomes obstructed by an object or person.

11B-411.3.3.1 Height. The height of the reopening device shall comply with Section 11B-407.3.3.1.

11B-411.3.3.2 Contact. The device contact shall comply with Section 11B-407.3.3.2.

11B-411.3.3.3 Duration. The door reopening device duration shall comply with Section 11B-407.3.3.3.

11B-411.3.4 Door delay. Door delay shall comply with Section 11B-407.3.5.

11B-411.3.5 Width. The width of elevator doors shall comply with Table 11B-407.4.1.

11B-411.4 Elevator car requirements. Elevator cars shall comply with Section 11B-411.4.

11B-411.4.1 Car dimensions. Inside dimensions of elevator cars and clear width of elevator doors shall comply with Section 11B-407.4.1.

11B-411.4.2 Floor surfaces. Floor surfaces in elevator cars shall comply with Section 11B-407.4.2.

11B-411.4.3 Platform to hoistway clearance. Platform to hoistway clearance shall comply with Section 11B- 407.4.3.

11B-411.4.4 Leveling. Elevator car leveling shall comply with Section 11B-407.4.4.

11B-411.4.5 Illumination. The level of illumination at the car controls shall comply with Section 11B-407.4.5.

11B-411.4.6 Elevator car controls. Where provided, elevator car controls shall comply with Sections 11B-411.4.6 and 11B-309.4.

11B-411.4.6.1 Location. Controls shall be located within one of the reach ranges specified in Section 11B-308.

11B-411.4.6.2 Buttons. Car control buttons shall comply with Sections 11B-407.4.6.2.1 and 11B-407.4.6.2.4. The car shall not have non-functional, exposed floor buttons.

11B-411.4.6.3 Emergency controls. Emergency controls shall comply with Section 11B-407.4.6.4.

11B-411.4.7 Designations and indicators of car control buttons. Designations and indicators of car control buttons shall comply with Section 11B-411.4.7.

11B-411.4.7.1 Type. Control button type shall comply with Section 11B-407.4.7.1.1.

11B-411.4.7.2 Location. Raised characters or symbols and Braille designations shall comply with Section 11B-407.4.7.1.2.

11B-411.4.7.3 Symbols. The control button for the emergency stop, alarm, door open, door close, and phone, shall be identified with raised symbols and Braille as shown in Table 11B-407.4.7.1.3.

11B-411.4.7.4 Button spacing. Button spacing shall comply with Section 11B-407.4.7.1.5.

11B-411.4.8 Car position indicators. Audible and visible car position indicators shall be provided in elevator cars.

11B-411.4.8.1 Visible indicators. Visible indicators shall comply with Section 11B-411.4.8.1.

11B-411.4.8.1.1 Size. Characters shall comply with Section 11B-407.4.8.1.1.

11B-411.4.8.1.2 Location. Location of indicators shall comply with Section 11B-407.4.8.1.2.

11B-411.4.8.2 Audible indicators. Audible indicators shall comply with Section 11B-411.4.8.2.

11B-411.4.8.2.1 Signal type. The signal shall be an automatic verbal annunciator which announces the floor at which the car is about to stop.

11B-411.4.8.2.2 Signal level. The verbal annunciator signal level shall comply with Section 11B- 407.4.8.2.2.

11B-411.4.8.2.3 Frequency. The verbal annunciator frequency shall comply with Section 11B-407.4.8.2.3.

11B-411.4.9 Emergency communication. Emergency communication shall comply with Section 11B-407.4.9.

11B-411.4.10 Support rail. Support rails complying with Section 11B-407.4.10 shall be provided on at least one wall of the car.

11B-411.4.11 Floor destination indicators. There shall be on each elevator car door jamb a visual display indicating floor destinations.

11B-411.4.11.1 Height. Floor destination characters shall be 1 inch (25 mm) high minimum complying with Section 11B-703.5.3.

11B-411.4.11.2 Contrast. Visual display shall provide contrast with light characters on a dark background or dark characters on a light background. The background shall be solid and static.

11B-411.4.11.3 Duration. Floor destination characters shall be displayed upon elevator car arrival at the input floor and shall not extinguish until the elevator car arrives at the destination floor.