CHh 29 Barrier Free Design Flashcards
Requirements that dictate how many accessible elements must be provided
Scoping provisions
a continuous, unobstructed path connecting all accessible elements and spaces in a building or facility
accessible route
36” continuously and and 32” at a passage point such as a doorway. The passage point cannot be more than 24” long.
minimum clear width for an accessible route
The minimum clear floor space to accommodate a one stationary wheelchair
30” x 48”
How much space is required for wheelchair maneuverability, and in what 2 configurations
a minimum 60” diameter circle is required for a wheelchair to make a 180 degree turn. In place of this, a T-shaped space may be provided. (each legs 36” wide)
minimum passage width for two wheelchairs is
60”
If an accessible route is less than 60” wide
then passing spaces at least 60” x 60” must be provided at intervals not to exceed 200’
A door must have a clear minimum opening of __” when opened at 90 degrees
32”
The maximum depth of a 32” wide doorway is __”. If the area is deeper than this, then the width must be increased to 36”
24”
Turns in corridors or around obstructions: How deep must a turning area be between 2 perpendicular corridors 42” wide with the distance between the 2 less than 48”
48”
Turns in corridors or around obstructions: How deep must a turning area be between 2 perpendicular corridors 36” wide with the distance between the 2 at least 48”
36”
If sufficient clearance is not provided at swinging doors then the doors must have
power assisted mechanisms or open automatically
Thresholds at doorways can’t exceed __” in height and must be _______ so no slope of the threshold is greater than ___.
1/2”—beveled—1:2
The opening force required to push or pull open an interior hinged door cannot be more than
5lbf-ft
Operating devices must have a shape that’s easy to grasp such as _____________, ___________________, and _______________. Standard door knobs are not allowed.
lever handles, push type mechanisms, and U-shaped handles
Minimum space for two doors shown in a series: Both doors opening in the same direction of travel
48 between the fully open door and the wall of the second door
Minimum space for two doors shown in a series: Both doors opening away for the shared space
48” wall to wall
Minimum space for two doors shown in a series: Both doors opening into the shared space
48” from one fully open door to the other fully open door
Min size of standard ADA bathroom stall
60” wide, 59” deep
Min size of ADA end stall
60” wide, 59” to door, 36” min for door (8’11” total width)
ADA RR Stall: Max distance from end of stall to door hinge
4”
ADA RR Stall: Min distance from door to wall opposite stall
42”
Grabs bars must be mount __” to __“above the floor
33” —36”
The centerline of the toilet must be __” from a wall and __” to the closest edge of a lavatory. Grab bars must be at both the back and side of the water closet
16”-18”
Urinals must be of the stall type or wall hung with an elonagated rim at a max height of __” above the floor
17”
Centerline of toilet must be ____ from edge of lav in residential applications
18”
Centerline of toilet m8st be _____ from edge of lav in commercial applications
60”
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”
If the pipes are exposed below the lavatory, they must be
insulated or otherwise protected and there must not be any sharp or abrasive surfaces under lavatories or sinks
Faucet must be
operable with one hand and cannot require tight grasping, pinching, or twisting of the wrist. Lever operated, push type, and automatically controlled mechanisms are acceptable.
Mirrors must be mounted with the bottom edge of the reflecting surface no higher than __” from the floor.
40”
If a drinking fountain is freestanding or built-in without clear space below, it must have a clear floor space in front of it at least __” x __”, which allows a person in a wheelchair to make a parallel approach
30” x 48”
The IBC requires that ___ drinking fountains must be provided, one for wheelchair users and one for persons who are standing.
2
Bathtubs must have an ___________ or a ____ at the head of the tub
in-tub seat —seat at the head of the tub
When there is an enclosure, it cannot obstruct the ________ or the __________________________ onto seats or into the tub. Enclosure tracks cannot be mounted on the rim of the tub
controls—transfer from from wheel-chairs
When facilities with accessible sleeping rooms or suites are provided
a minimum number of rooms having roll-in showers, as specified in the ADA or the Federal Fair Housing Act, is required
A ____ is required in the smaller shower stall configuration, while a ____________ is required in the larger configuration if a permanent seat is not provided
seat—folding seat
Floor surfaces must be
stable, firm, and slip-resistant
If there is a change in level, the transition must meet the following requirements. If the change is less than___”, it may be vertical and without edge treatment. If the change is between ___” and ___”, it must be beveled with a slope no greater than ___. Changes greater than ___” must be accomplished with a ramp.
1/4”—1/4” and 1/2”—1:2—1/2”
Carpet must have a firm cushion or backing or no cushion, as well as __________, ______________, or ____________________________. It must be securely attached to the floor and have trim along all edges.
level loop, textured loop, level-cut pile, or level-cut/uncut pile texture with a maximum pile height of 1/2”
Ramps
are required to provide a smooth transition between elevation changes, for both wheel chair bound persons as well as those whose mobility is otherwise restricted
In general, the least possible slope should be used, but in no case can a ramp have a slope greater than
1:12
The maximum rise for any ramp is limited to
30”
In some cases where exiting conditions prevent the ____ slope, a ____ slope is permitted if the maximum rise does not exceed _”. A 1:8 slope is permitted if the maximum rise does not exceed _”
1:12—1:10—6”–3”
A ramp must have a minimum clear width of __” and landings at least as wide as the widest ramp leading to them. Landing lengths must be a minimum of __”. If ramps change direction at a landing, then the landing must be at least __“square
36”—60”—60”
Ramps with rises greater than _” or lengths greater than __” must have handrails on both sides, and the top of the handrail must be from __” to __” above the ramp surface. Handrails must extend horizontally at least __” beyond the top and bottom of the ramp segment and have a diameter or width of gripping surface from ____” to ____”
6”—72”—34”—38”—12”—1-1/4”—1-1/2”
The maximum riser height is _” and the treads must be a minimum of __” as measured from riser to riser.
7”—11”
How high must a protruding object be from the floor to not have a maximum depth
27”
Max protrusion from a wall if below 27”
4”
Min headroom to a protrusion from the ceiling
80”
Permanent rooms and spaces must be identified with signs having lettering from ___” to _” high, raised ____” above the surface of the sign. Lettering must be all uppercase, in sans serif or simple serif type accompanied with Grade 2 Braille. If pictograms are used they must be at least _” high and must be accompanied by the equivalent verbal description, placed directly below.
5/8”—2”—1/32”—6”
Signs must have an (finish)
eggshell matte or other nonglare finish with characters and symbols contrasting with their background
Permanent identification signs must be mounted on the wall adjacent to the back latch side of of the door such that a person can approach to within _“of the signage without encountering protruding objects or standing within the door swing. Mounting height to the baseline of the lowest tactile character must be __” minimum and __” maximum. When there is no wall space to the latch side of the door, including double leaf doors, the sign must be placed on the nearest adjacent wall
3”—48”—60”
Directional and informational signs must have lettering from___” to _” high; depending on the viewing distance
5/8”—3”
Emergency warning systems must provide a visual and audible alarm. Audible alarms must be ___ db louder than the prevailing sound level of the room, and visual must have:
15 dB —— Flashing lights have a flashing frequency of about 1 cycle/sec
How many telephones must comply with ADA regulations?
One telephone per floors must conform
The location of text telephones
must be identified with the international TDD symbol, and volume control telephones must have a sign depicting a telephone handset with radiating sound waves. In assembly areas, permanently installed assistive listening systems must display the international symbol for hearing loss access
Call buttons for elevators must be:
48” max for the up highest button
If fixed or built in seating or tables are provided in accessible public or common uses areas: Space required if HC area is open to aisle
30”
If fixed or built in seating or tables are provided in accessible public or common uses areas: Space required if HC area is against a wall
36”
In auditorium or stadium style seating at least 1% of all fixed seating
must be aisle seats with no armrests on the aisle side, or must have removable or folding armrests on the aisle side. At least one companion seat must be provided next to each wheelchair seat.
which title of the ADA most affects interiors
title III
requirements for construction and interiors are actually in the…
ADAAG
What is ADAAG
ADA accessibility guidelines
ADA is based on…
ANSI 117.1
requirements that dictate # of accessible features/elements to be provided
scoping provision
continuous accessible path connecting all accessible elements and spaces in a building
accessible route
w,d for stationary wheelchair space
30x48
max level change without bevel
1/4”
max level change of up to 1/2” with a____
bevel
___” at pull latch side
18”
___” at push latch side
12”
height for grab bars
33-36”
minimum length for grab bars
36”
minimum depth for lavatories
17”
minimum height for knee clearance
27”
max countertop height
34”
max knee space width
30”
of grab bars at a tub
4
heights for 4 grab bars in tub
3 @ 33-36” aff, 1 @ 9” above tub ledge
max carpet pile height
1/2”
max nosing dimension
1 1/2”
if an object protruding from ceiling lessens ceiling height any lower than ____” than a gaurdrail or barrier must be provided at floor
80”
protruding objects higher than 27” can protrude ___” from wall
4”
floor surface with a heavy texture and contrasting color in front of hazardous situations require a
detectable warning
signage should be mounted on (latch/hinge) side
latch side
mounting height for lowest tactile character is ___-____”
48-60”
