Chapter 9 - Barrier-Free Design Flashcards
An __________ is a continuous, unobstructed path connecting ALL accessible elements and spaces in a building or facility. It includes corridors, doorways, floors, ramps, elevators, lifts, and clear floor space at fixtures.
accessible route
The standards for accessible routes are designed primarily to accommodate a person ________, but they should also accommodate _________.
people in a wheelchair
people with other disabilities
The minimum clear width for an accessible route is __” continuously and ___” at a passage point such as a doorway.
36”
32”
The passage point cannot be more than ___” long.
24”
The minimum passage width for two wheelchairs is __”.
60”
If an accessible route is less than ___” wide, then passing spaces at least __” x ___” must be provided at intervals not to exceed _____’.
60”
60”x60”
200’
The minimum clear floor space required to accommodate one stationary wheelchair is ___” x ____” .
30” x 48”
For maneuverability, a minimum ___” diameter circle is required for a wheelchair to make a ___ degree turn.
60” diameter
180 degree turn
In place of this, a T-shaped space of what sizes may be provided?
36” x 36” x 36”
An accessible route may have a slope up to ____ or ___%.
1:20 (1 INCH of rise for every 20 FEET of distance) or 5%
A slope any greater than ___ or ___ is classified as a ramp and must meet the requirements thereof.
1:20 or 5%
A door must have a minimum clear opening width of ___” when opened at 90 degrees.
32”
The maximum depth of a doorway 32” wide is ____”
24”
If the depth of a 32” wide door is deeper than 24”, the width must be increased to _____”
36”
Thresholds at doorways cannot exceed a __” vertical change in elevation
1/4”
Vertical changes in elevations between ____” and ____” must be beveled so no part of the threshold slopes more than ____vertical unit for each ____ horizontal units (i.e. 1:2 slope)
1/4” and 1/2”
1 vertical : 2 horizontal
1:2 slope
Operating devices must have a shape that is _____. This includes ____, ______, and _____.
easy to grasp
lever handles, push-type mechanisms, and u-shaped handles
If door closers are provided, they must ______
be adjusted to slow the closing time
The opening force required to push or pull open an interior hinged door should not require more than ___ pounds of force to open
5
Toilet Stalls–in most cases, the door must provide a minimum clear opening of __” and swing ____, ____from the stall enclosure
32” out
away from the stall enclosure
The clearance depth in toilet stalls depends on ______
whether the toilet is wall hung or floor mounted
At least one ambulatory toilet shall be built in rooms where there are ____ or more toilet stalls.
6
All toilet stalls must have toe clearance below the front partition and ____
at least one side partition
Toe clearance below toilet stalls must be a minimum of ___” above the floor and ___” beyond the compartment-side face of the partition
9” 6”
The dimension from the centerline of the toilet is ____ from an adjacent wall.
16-18”
In residential units, the edge of a lavatory must be located a minimum of ___” from the centerline of the toilet
18”
Toilet paper dispensers must be installed with the centerline between ___” and ___” in front of the water closet, with the outlet of the dispenser between __” and ___” above the floor.
7” and 9” in front
15” and 48” AFF
A clear floor space of ___” x ___” must be provided in front of the urinal, which may adjoin or overlap an accessible route.
30” x 48”
Urinal shields that do not extend beyond the front edge of the rim, may be provided with ___” of clearance between them.
29”
Faucets must be operable with ____ and cannot require tight grasping, pinching, or twisting of the wrist
one hand
Are lever-operated, push-type, and automatically controlled mechanisms acceptable?
yes
Mirrors above lavatories and countertops must be mounted with the bottom edge of the reflecting surface no higher than __” from the floor.
40”
Drinking fountains without clear space below must have a clear floor space in front of them at least __” wide x __” deep with the long dimension parallel to the fountain.The spout must be a maximum of __” from the front edge of the unit for users making a forwards approach.
30” x 48”
5”
The IBC requires that _____ drinking fountains be provided.
2 drinking fountainsone for users and one for persons who are standing. In lieu of two separate fountains, a combination unit that provides for both may be provided.
Bathtubs must be configured with an ______ or _______.
in-tub seat
a seat at the head of the tub
Shower stalls may be one of two basic types, _____ or ______.
roll-in
transfer
When facilities with accessible sleeping rooms or suites are provided, a minimum number of rooms having _____, as specified in the ____ or _____, is required.
roll-in showers, as specified in the ADA or federal Fair Housing Act
A seat is required in the ____, while a folding seat is required in the ____ if a permanent seat is not provided.
smaller shower stall configuration larger configuration
Grab bars must be provided in the shower and must be mounted ___” to __” AFF
33” to 36”
Floor surfaces must be ____, ____, and _____.
stable, firm, and slip-resistant
If a floor change is less than ____, it may be vertical and without edge treatment.
1/4”
If a floor change is between ___” and ___”, it must be beveled, with a slope no great than ____
1/4” and 1/2” 1:2 (1/2” of rise requires 1” of length)
Floor changes greater than ___” must be accomplished with a ramp meeting the requirements of such
1/2”
Carpets must have a _____ or ______.
firm cushion/backing or no cushion
Carpet must have a _____ loop, ______ pile, or _________ pile texture with a maximum pile height of _______.
level
level-cut
level-cut/uncut
1/2”
Carpet must be _____ and have ________.
securely attached to the floor and have trim along all lengths of exposed edges
Ramp slopes may not exceed ____
1:12
1 inch of rise for every 12 inches of run
The maximum rise for any ramp is limited to _____
30 inches
Changes in elevation greater than ____ require a level landing before the next run of ramp is encountered
30 inches
In cases where existing conditions prevent the ____ slope, a ____ slope is permitted if the maximum rise does not exceed ____.
1: 12
1: 10
6”
A ____slope is permitted if the max rise does not exceed ____in.
1:8
3”
A ramp must have a minimum clear width of ___” and landings at least ______________.
36”
at least as wide as the widest ramp leading to them
Landing lengths must be a minimum of _____
60”
If ramps change direction at a landing, the landing must be at least ______
60”
Ramps with rises greater than ___” or lengths greater than ____” must have handrails on both sides, the top of the handrail must be from ____” to _____” above the ramp surface
6 inches
72 inches
34-38 inches
On ramps, handrails must extend horizontally at least ____” beyond the top and bottom of the ramp segment and have a diameter of ___ to ____”
12”
1 1/4” to 1 1/2”
In assembly, handrails (are/are not) required for ramps adjacent to seating.
are not
Egress stairs and stairs not connected by an elevator: Max riser height: ___” Treads (measured from riser to rise): ___”
7”
11”
Open risers are not permitted, however when a stairway is not required to be accessible open risers are permitted provided that the opening between treads does not permit the passage of a sphere with a diameter of ___”.
4”
The undersides of the nosing must not be ______ and must conform with certain styles.
abrupt
Stair handrails must be continuous ________
on both sides of the stairs
The inside handrail on ______ or ______ stairs must always be continuous.
switchback or dogleg
Stair handrails must have a diameter of ___” to_____”
1 1/4” to 2”
When an exit stairway is part of an accessible route in an unsprinklered building, there must be a clear width of ____” between the handrails.
48”
A protruding object with a lower edge less than ___” AFF can be detected by a person using a cane, so these objects may project any amount.
27”
If the vertical clearance of an area adjacent of an accessible route is reduced to less than _____”, a guardrail or other barrier must be provided.
80”
A _________ is a surface feature built in or applied to walking surfaces or other elements to warn of hazards on a circulation path.
detectable warning
Detectable warning surfaces
consist of 1/2” high truncated domes spaced between ____ and ____ inches on center in a square grid pattern.
1.6
2.4
Continuous ________ surfaces _____” wide are generally required at passenger transit platform edges where there is no guard or other protective elements.
detectable warning surfaces
24”
Both the ___ and ___ required detectable warning surfaces at platform boarding edges, but the ___ does not require them at ______
ADA and IBC
IBC
bus stops
Signage for visually impaired people must be provided, and must give _____ and ____
emergency information
general circulation directions
Signage is also required for _____
elevators
Emergency warning systems that provide both ____ and ____ alarms are required
visual and audible
Audible alarms must produce a sound that exceeds the prevailing sound level in the room or space by at least ___dB
15
________ alarms must be ________ _______ that have a frequency of about 1 cycle/ second
Visual
flashing lights
Alarms must comply with ______
NFPA 72
ADA requires that certain accessible rooms and features be ________________
clearly identified with the symbol for accessibility.
The hall lantern for an elevator should be centered at _____
72”
The call button for an elevator should be centered at ____
48”
The hall lantern must give a ___ and ___ signal
audible and visual
Inside the elevator car, the floor buttons may be no higher than ____ in above the floor. However when a side approach is possible and the elevator panel serves more than 16 openings, floor buttons may be a max of ___ in AFF.
48”
54”
Emergency controls in an elevator cab must be grouped ________ with the centerline of the group no less than ________” AFF
At the bottom of the panel
35”
If fixed or built-in seating or tables are provided in accessible public or common-use areas, at least____% but not less than ___ table, of the seating areas must be accessible. This applies to facilities such as restaurants, nightclubs, churches, and similar spaces
5%
not less than 1 table
In places of assembly with fixed seating, the minimum number of wheelchair locations is given in the ______ based on the capacity of the seating in the assembly area.
ADA/ABA Guidelines Table
At least ___% (no less) of all fixed seats must be aisle seats with no arms rests on the aisle side, or must have removable or folding armrests on the aisle side. Signs notifying people of the availability of these seats must be posted ______.
1%
at the ticket office
The wheelchair areas in assembly spaces, must be an ________ and must be provided so people ________
an integral part of the overall seating plan
have a choice of admission prices and lines of sight comparable to those available for member of the general public.
At least one __________ must be provided next to each wheelchair area.
companion seat
Wheelchair areas must join an _______
accessible route that also serves as a means of emergency egress
When assembly areas are part of a ______ and it is not feasible to disperse the seating areas throughout the facility, the accessible seating areas may be ______. These _____ areas must have provisions for companion seating and must be located on an accessible route that also serves as a means of emergency egress.
remodeling
clustered
clusters
