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米国における船舶のバリアフリー化推進に関する調査

 事業名 造船関連海外情報収集及び海外業務協力事業
 団体名 シップ・アンド・オーシャン財団  


CHAPTER 4: ACCESSIBLE ROUTES AND ACCESSIBLE MEANS OF EGRESS
 
401 General
 
401. 1 Scope. Accessible routes and accessible means of egress required by Chapter 2 shall comply with the applicable provisions of this chapter.
 
402 Accessible Routes
 
402.1 General. Accessible routes shall comply with 402.
 
402.2 Components. Accessible routes shall consist of one or more of the following components: Walking surfaces with a slope not steeper than 1:20, doorways, ramps, elevators and platform (wheelchair) lifts. All components of an accessible route shall comply with the applicable portions of this chapter.
 
403 Walking Surfaces
 
403.1 General. Walking surfaces that are a part of an accessible route shall comply with 403.
 
403.2 Floor or Ground Surface. Floor or ground surfaces shall comply with 302.
 
403.3 Slope. The running slope of walking surfaces shall be not steeper than 1:20. The cross slope of walking surfaces shall not be steeper than 1:48.
 
403.4 Changes in Level. Changes in level shall comply with 303.
 
403.5 Clear Width. The clear width of walking surfaces shall be 36 inches (915 mm) minimum.
EXCEPTION: The clear width shall be 32 inches (815 mm) minimum for a length of 24 inches (610 mm) maximum. provided that multiple 32 inch (815 mm) wide segments are separated by segments that are 48 inch (1220 mm) minimum in length and 36 inch (915 mm) minimum in width.
 
403.5.1 Clear Width at Turn. Where the accessible route makes a 180 degree turn around an object which is less than 48 inches (1220 mm) wide, clear width shall be 42 inches (1065 mm) minimum approaching the turn. 48 inches (1220 mm) minimum during the turn and 42 inches (1065 mm) leaving the turn.
 
403.5.2 Passing Spaces. An accessible route with a clear width less than 60 inches (1525 mm) shall provide passing space at intervals of 200 feet (61 m) maximum. Passing spaces shall be either a 60 inch (1525 mm) minimum by 60 inch (1525 mm) minimum space, or an intersection of two walking surfaces which provide a T-shaped space complying with 304.
 
403.5.3 Protruding Objects. Protruding objects shall comply with 307. Protruding objects shall not reduce the required clear width.
 
404 Doors and Doorways
 
404.1 General. Doors and doorways that are part of an accessible route shall comply with 404.
 
404.2 Manual Doors and Doorways. Manual doors and doorways and manual gates, including ticket gates, shall comply with 404.2.1 through 404.2.11.
 
404.2.1 Revolving Doors and Turnstiles. Revolving doors and revolving turnstiles shall not be part of an accessible route.
 
404.2.2 Double-Leaf Doors. At least one of the active leaves of doorways with two independently operated leaves shall comply with 404.2.3 and 404.2.4.
 
404.2.3 Clear Width. Doorways shall have a clear opening of 32 inches (815 mm) minimum. Clear openings of doorways with swinging doors shall be measured between the face of the door and the stop, with the door open 90 degrees. Openings more than 24 inches (610 mm) in depth shall provide a clear opening of 36 inches (915 mm) minimum. There shall be no projections into the required clear opening width lower than 34 inches (865 mm) above the floor or ground. Projections into the clear opening width between 34 inches (865 mm) and 80 inches (2030 mm) above the floor or ground shall not exceed 4 inches (100 mm).
EXCEPTION: In alterations where it is technically infeasible to comply with clear opening width requirements, a projection of 5/8 inch (16 mm) maximum into the required clear width shall be permitted for the latch side stop.
 
404.2.4 Maneuvering Clearances.
 
404.2.4.1 Swinging Doors. Approaches to swinging doors shall have maneuvering clearances complying with Table 404.2.4.1.
 
Table 404.2.4.1 Maneuvering Clearances at Manual Swinging Doors.
TYPE OF USE MINIMUM MANEUVERING CLEARANCE 1
Approach Direction Door Side Perpendicular to Doorway Parallel to Doorway 2 (beyond latch side unless noted)
From front Pull 60 inches (1525 mm) 18 inches (455 mm)
From front Push 48 inches (1220 mm) 0 inches (0 mm) 3
From hinge side Pull 60 inches (1525 mm) 36 inches (915 mm)
From hinge side Pull 54 inches (1370 mm) 42 inches (1065 mm)
From hinge side Push 42 inches (1065 mm) 4 22 inches (560 mm) beyond hinge side
From latch side Pull 48 inches (1220 mm) 5 24 inches (610 mm)
From latch side Push 42 inches (1065 mm) 5 24 inches (610 mm)
 
404.2.4.2 Doorways without Doors, Sliding Doors and Folding Doors. Approaches to doorways without doors which are less than 36 inches (915 mm) wide and approaches to sliding and folding doors shall have maneuvering clearances complying with Table 404.2.4.2.
 
Table 404.2.4.2 Maneuvering Clearances at Doorways without Doors, Manual Sliding Doors, and Manual Folding Doors.
  MINIMUM MANEUVERING CLEARANCE 1
Approach Direction Perpendicular to Doorway Parallel to Doorway 2 (beyond stop/latch side unless noted)
From Front 48 inches (1220 mm) 0 inches (0 mm)
From side (doorway with no door only) 42 inches (1065 mm) 0 inches (0 mm)
From pocket/hinge side 42 inches (1065 mm) 22 inches (560 mm) beyond pocket/hinge side
From stop/latch side 42 inches(1065 mm) 24 inches (610 mm)
 
404.2.4.3 Doors in Alcoves. Doors in alcoves where the plane of the doorway is offset more than 8 inches (205 mm) from the plane of the wall shall provide maneuvering clearances for front approach.
 
404.2.4.4 Floor or Ground Surface. Floor or ground surface within required maneuvering clearances shall have a slope of 1:48 maximum and shall comply with 302. Changes in level are not permitted.
 
404.2.5 Thresholds. Thresholds if provided at doorways shall be 1/2 inch (13 mm) maximum in height. Raised thresholds and changes in level at doorways shall comply with 302 and 303.
EXCEPTION: This requirement shall not apply to existing or altered thresholds 3/4 inch (19 mm) high maximum that have a beveled edge on each side.
 
404.2.6 Two Doors in Series. The distance between two hinged or pivoted doors in series shall be 48 inches (1220 mm) minimum plus the width of any door swinging into the space. Doors in series shall swing either in the same direction or away from the space between the doors.
 
404.2.7 Door Hardware. Handles, pulls, latches, locks, and other operable parts on accessible doors shall comply with 309.4. Such hardware shall be 34 inches (865 mm) minimum and 48 inches (1220 mm) maximum above the floor or ground. When sliding doors are in the fully open position, operating hardware shall be exposed and usable from both sides.
EXCEPTION: Locks used only for security purposes and not used for normal operation are permitted in any location.
 
404.2.8 Closing Speed.
 
404.2.8.1 Door Closers. Door closers shall be adjusted so that from an open position of 90 degrees, the time required to move the door to an open position of 12 degrees is 5 seconds minimum.
 
404.2.8.2 Spring Hinges. Door spring hinges shall be adjusted so that from the open position of 70 degrees, the door shall move to the closed position in 1.5 seconds minimum, measured under ambient conditions.
 
404.2.9 Door Opening Force. Fire doors shall have a minimum opening force allowable by the appropriate administrative authority. The required force for pushing or pulling open a door other than fire doors shall be as follows:
 
1. interior hinged doors: 5 lb (22.2 N) maximum.
2. Sliding or folding doors: 5 lb (22.2 n) maximum.
 
These forces do not apply to the force required to retract latch bolts or disengage other devices that hold the door in a closed position.
 
404.2.10 Door Surface. The bottom 10 inches (255 mm) of all swinging doors shall have a smooth surface on the push side and extending the full width of the door. Parts creating horizontal or vertical joints in such surface shall be within 1/16 inch (1.6 mm) of the same plane as the other. Cavities created by added kick plates shall be capped.
EXCEPTIONS:
1. This requirement shall not apply to sliding doors
2. Tempered glass doors without stiles and having a bottom rail or shoe with the top leading edge tapered at 60 degrees minimum from the horizontal shall not be required to meet the 10 inch (255 mm) bottom rail height requirement.
3. This requirement shall not apply to doors that do not extend to within 10 inches (255 mm) of the floor or ground.
 
404.2.11 Vision Lites. Doors, and sidelites adjacent to doors, containing one or more glazing panels that permit viewing through the panels shall have the bottom of at least one glazed panel located 43 inches (1090 mm) maximum above the floor.
 
404.3 Automatic Doors. Automatic doors and automatic gates shall comply with 404.3.1 through 404.3.6. Full-powered automatic doors shall comply with ANSI/BHMA A156.10. Low-energy and power-assisted doors shall comply with ANSI/BHMA A156.19.
 
404.3.1 Clear Width. Doorways shall have a clear opening of 32 inches (815 mm) minimum in power-on and power-failure mode. The minimum clear width for automatic door systems shall be based on the clear opening provided by all leafs in the open position.
 
404.3.2 Maneuvering Clearance. Clearances at power-assisted doors shall comply with 404.2.4.
 
404.3.3 Thresholds. Thresholds and changes in level at doorways shall comply with 404.2.5.
 
404.3.4 Two Doors in Series. Doors in series shall comply with 404.2.6.
 
404.3.5 Controls and Operating Mechanisms. Control switches shall comply with 309.
 
404.3.6 Signs. Labels and warnings for automatic doors shall comply with 703.4.
 
405 Ramps
 
405.1 General. Walking surfaces on accessible routes with a running slope steeper than 1:20 are ramps and shall comply with 405.
 
405.2 Slope. Ramp runs shall have a running slope not steeper than 1:12.
EXCEPTIONS:
1. Ramps in or on existing buildings or facilities shall be permitted to have slopes steeper than 1:12 complying with Table 405.2 where such slopes are necessitated by space limitations.
2. In alterations to qualified historic buildings and facilities where alternative requirements are permitted by 202.5, the slope of a ramp run of 24 inches (610 mm) maximum shall not be steeper than 1:6.
 
Table 405.2 Maximum Ramp Slope and Rise for Existing Sites, Buildings and Facilities.
Slope 1 Maximum Rise
Steeper than 1:10 but not steeper than 1:8 3 inches(75 mm)
Steeper than 1:12 but not steeper than 1:10 6 inches(150 mm)
 
405.3 Cross Slope. Cross slope of ramp runs shall not be steeper than 1:48.
 
405.4 Floor or Ground Surfaces. Floor or ground surfaces of ramp runs shall comply with 302. Changes in level other than the running slope and cross slope are not permitted on ramp runs.
 
405.5 Clear Width. The clear width of a ramp run and the clear width between handrails, if provided. shall be 36 inches (915 mm) minimum.
 
405.6 Rise. The rise for any ramp run shall be 30 inches (760 mm) maximum.
 
405.7 Landings. Ramps shall have landings at bottom and top of each ramp run. Landings shall comply with 405.7.1 through 405.7.5.
 
405.7.1 Slope. Landings shall have a slope not steeper than 1:48 and shall comply with 302. Changes in level are not permitted.
 
405.7.2 Width. The landing shall be at least as wide as the widest ramp run leading to the landing.
 
405.7.3 Length. The landing length shall be 60 inches (1525 mm) minimum.
 
405.7.4 Change in Direction. Ramps that change direction between runs at landings shall have a 60 inch (1525 mm) minimum by 60 inch (1525 mm) minimum landing.
 
405.7.5 Doorways. Where doorways are located adjacent to a ramp landing, maneuvering clearances required by 404.2.4 and 404.3.2 shall be permitted to overlap the required landing area.
 
405.8 Handrails. Ramp runs with a rise greater than 6 inches (150 mm) shall have handrails complying with 505.
 
405.9 Edge Protection. Edge protection complying with 405.9.1 or 405.9.2 shall be provided on each side of ramp runs and at each side of ramp landings.
EXCEPTIONS:
1. Edge protection is not required on ramps that are not required to have handrails and have sides complying with 406.3.
2. Edge protection is not required on the sides of ramp landings serving an adjoining ramp run or stairway.
3. Edge protection is not required on the sides of ramp landings having a vertical drop-off of 1/2 inch (13 mm) maximum within 10 inches (255 mm) horizontally of the minimum landing area.
 
405.9.1 Extended Floor or Ground Surface. The floor or ground surface of the ramp run or landing shall extend 12 inches (305 mm) minimum beyond the inside face of a handrail complying with 505.
 
405.9.2 Guard, Curb or Barrier. A guard, curb or barrier shall be provided that prevents the passage of a 4 inch (100 mm) diameter sphere, where any portion of the sphere is within 4 inches (100 mm) of the floor or ground surface.
 
405.10 Outdoor Conditions. Outdoor ramps and outdoor approaches to ramps shall be designed so that water will not accumulate on walking surfaces.
 

Notes:
1.
Maneuvering clearance shall include the full width of the doorway.
 
2.
Doors to hospital patient sleeping rooms are exempt from the clearance beyond the latch side of the door provided the door is 44 inches (1120 mm) wide minimum.
 
3.
Add 12 inches (305 mm) if closer and latch are provided.
 
4.
Add 6 inches (150 mm) if closer and latch are provided.
 
5.
Add 6 inches (150 mm) if closer and latch are provided.
Notes:
1.
Maneuvering clearance shall include the full width of the doorway.
 
2.
Doors to hospital patient sleeping rooms are exempt from the clearance beyond the stop/latch side of the door provided the door is 44 inches (1120 mm) wide minimum.
Notes:
1.
A slope steeper than 1:8 is prohibited.







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集計期間:成果物公開〜現在
更新日: 2019年7月13日

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