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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 7: COMMUNICATION ELEMENTS AND FEATURES
 
701 General
 
701.1 Scope. Communications features and elements required to be accessible by Chapter 2 shall comply with the applicable provisions of this chapter.
 
702 Fire Alarm Systems
 
702.1 General. Fire alarm systems required to be accessible shall have audible alarms complying with 702.2 and visual alarms complying with 702.3.
EXCEPTION: Fire alarm systems in medical care facilities shall be permitted to be modified to suit standard health care alarm practice.
 
702.2 Audible Alarms. Audible alarms shall produce a sound that exceeds the prevailing equivalent sound level in the room or space by at least 15 dBA or exceeds any maximum sound level with a duration of 60 seconds by 5 dBA. whichever is louder. Sound levels for alarm signals shall not exceed 120 dBA.
 
702.3 Visual Alarms. Visual alarms shall comply with 702.3.1 through 702.3.6
 
702.3.1 Light Pulse Characteristics.
 
702.3.1.1 Type. The lamp shall be a xenon strobe type or equivalent.
 
702.3.1.2 Color. The color shall be clear or nominal white.
 
702.3.1.3 Flash Rate. The flash rate for an individual appliance shall be 1 Hz minimum and 2 Hz maximum over its rated voltage range.
 
702.3.1.4 Pulse Duration. The maximum pulse duration shall be two-tenths of one second with a maximum duty cycle of 40 percent. The pulse duration is defined as the time interval between initial and final points of 10 percent of maximum signal.
 
702.3.2 Dispersion. Light dispersion of wall mounted appliances shall comply with Table 702.3.2.1. Light dispersion of ceiling mounted appliances shall comply with Table 702.3.2.2.
 
Table 702.3.2.1 Light Dispersion for Wall-Mounted Visual Alarm Appliances
Vertical Dispersion Horizontal Dispersion
Degrees from Horizontal Percent of Rated Degrees from vertical Percent of Rated
0 100 0 100
5-30 90 5-25 90
35 65 30-45 75
40 46 50 55
45 34 55 45
50 27 60 40
55 22 65 35
60 18 70 35
65 16 75 30
70 15 80 30
75 13 85 25
80 12 90 25
85 12    
90 12    
 
Table 702.3.2.2 Light Dispersion for Ceiling- Mounted Visual Alarm Appliances
Degrees from Vertical Percent of Rated
0 100
5-25 90
30-45 75
50 55
55 45
60 40
65 35
70 35
75 30
80 30
85 25
90 25
 
702.3.3 Mounting Height. Appliances shall be located in accordance with 702.3.3.1 or 702.3.3.2.
EXCEPTION: Appliances in guest rooms shall comply with 702.3.6.
 
702.3.3.1 Wall mounted appliances. Appliances shall be located 80 inches (2030 mm) minimum and 96 inches (2440 mm) maximum above the finished floor measured to the bottom of the appliance.
EXCEPTION: Wall mounted appliances which are part of a smoke detector shall be located 4 inches (100 mm) minimum and 12 inches (305 mm) maximum below the ceiling measured to the top of the smoke detector.
 
702.3.3.2 Ceiling-Mounted Appliances. Ceiling-mounted appliances shall be located on the ceiling. Where ceiling height exceeds 30 feet (9140 mm), appliances shall be suspended from the ceiling to a height of 30 feet (9140 mm) maximum above the finished floor.
 
702.3.4 Spacing Allocation and Minimum Intensity. Spacing and minimum effective intensity for appliances shall comply with 702.3.4.1 through 702.3.4.3.
EXCEPTIONS:
1. Appliances in corridors not more than 20 feet (6100 mm) in width shall comply with 702.3.5.
2. Appliances in guest rooms shall comply with 702.3.6.
 
702.3.4.1 General. The signal provided by the appliance or appliances shall be visible either by direct view or by reflection from all parts of the covered area. Multiple appliances within an area are permitted only where size, shape, building construction or furnishings prohibit total coverage by a single appliance. Where multiple appliances are provided in a single area to provide total area coverage, the appliances shall comply with one of the following: a maximum of two appliances located on opposite walls; the appliances shall have synchronized flashes, or, in rooms 80 feet (24 m) by 80 feet (24 m) or greater in size, more than two appliances located such that all appliances in any 135-degree field of view are spaced a minimum of 55 feet (17 m) from each other.
 
702.3.4.2 Wall mounted appliances. Spacing and minimum effective intensity for wall mounted appliances shall be in accordance with Table 702.3.4.2 provided the appliance is located at the midpoint of the longest side of the area served. Where the appliance is not located at the midpoint, the minimum effective intensity shall be based upon a maximum area of coverage equal to the distance to the opposite side of the area served or double the distance to the farthest adjacent side of the area served, whichever is greater.
 
Table 702.3.4.2 Spacing Allocation for Wall-Mounted Visual Alarm Appliances
Maximum Area of Coverage in Feet Minimum Required Light Output (Effective Intensity)(candela)
  One Light Per Area Two Lights Per Area Four Lights Per Area
20X20 (6100X6100 mm) 15 Not Permitted Not Permitted
30X30 (9140X9140 mm) 30 15 Not Permitted
40X40 (12X12 m) 60 30 Not Permitted
50X50 (15X15 m) 95 60 Not Permitted
60X60 (18X18 m) 135 95 Not Permitted
70X70 (21X21 m) 185 95 Not Permitted
80X80 (24X24 m) 240 135 60
90X90 (27X27 m) 305 185 95
100X100 (30X30 m) 375 240 95
110X110 (34X34 m) 455 240 135
120X120 (37X37 m) 540 305 135
130X130 (40X40 m) 635 375 185
 
702.3.4.3 Ceiling mounted appliances. Spacing and minimum effective intensity for ceiling mounted appliances shall be in accordance with Table 702.3.4.3 provided the appliance is located at the centerpoint of the area served. Where the appliance is not located at the centerpoint, the minimum effective intensity shall be based upon a maximum area of coverage equal to two times the distance from the appliance to the farthest side of the area served.
 
Table 702.3.4.3 Spacing Allocation for ceiling-Mounted Visual Alarm Appliances
Maximum Area of Coverage in Feet Minimum Required Output (Effective Intensity)(candela)
  Maximum Ceiling Height in Feet One Light
20X20 (6100X6100 mm) 10 (3050 mm) 15
30X30 (9140X9140 mm) 10 (3050 mm) 30
40X40 (12X12 m) 10 (3050 mm) 60
50X50 (15X15 m) 10 (3050 mm) 95
20X20 (6100X6100 mm) 20 (6100 mm) 30
30X30 (9140X9140 mm) 20 (6100 mm) 45
40X40 (12X12 m) 20 (6100 mm) 80
50X50 (15X15 m) 20 (6100 mm) 115
20X20 (6100X6100 mm) 30 (9140 mm) 55
30X30 (9140X9140 mm) 30 (9140 mm) 75
40X40 (12X12 m) 30 (9140 mm) 115
50X50 (15X15 m) 30 (9140 mm) 150
 
702.3.5 Corridor Spacing Allocation and Minimum Intensity. Corridors that are 20 feet (6100 mm) maximum in width shall comply with 702.3.5.Corridors exceeding 20 feet (6100 mm) in width shall comply with 702.3.4.
 
702.3.5.1 Appliance Spacing. Appliances shall be located 15 feet (4570 mm) maximum from each end of the corridor and shall be located 50 feet (15 m) minimum and 100 feet (30 m) maximum apart along the corridor. Interruptions to the concentrated viewing path by doors, elevation changes or other obstructions shall constitute the end of a corridor for purposes of this section.
 
702.3.5.2 Minimum Effective intensity. Appliances shall have a minimum effective intensity of 15 candela.
 
702.3.6 Guest Rooms. Guest rooms required to have visual alarms shall comply with 702.3.6.1 through 702.3.6.3.
 
702.3.6.1 Activation. Where single or multiple-station smoke detectors are provided in the sleeping room or suite, a visual alarm that is activated upon activation of the smoke detectors shall be provided within the room or suite. Where a building fire alarm system is provided, a visual alarm that is activated upon activation of the system shall be provided within the room or suite. The signaling line or channel between the activating device of the appliance and the building fire alarm system shall be monitored for integrity by the building fire alarm system. Where the same appliance is used for visual notification of smoke detector and fire alarm system activation, activation of the room or suite smoke detectors shall not activate the building fire alarm system.
 
702.3.6.2 Location. In sleeping rooms or suites having a linear dimension exceeding 16 feet (4880 mm), the appliance shall be located 16 feet (4880 mm) maximum from the head end of the bed location, measured horizontally. Where a suite contains more than one sleeping room, an appliance shall be provided in each sleeping room.
 
702.3.6.3 Minimum Effective intensity and Mounting Height. Wall mounted appliances located 24 inches (610 mm) minimum below the ceiling shall have a minimum effective intensity of 110 candela. Ceiling mounted appliances and wall mounted appliances located less than 24 inches (610 mm) below the ceiling shall have a minimum effective intensity of 177 candela.
 
703 Signs
 
703.1 General. Signs required to be accessible shall comply with 703.
 
703.2 Characters that are Both Tactile and Visual. Characters required to be tactile shall comply with 703.2.1 through 703.2.7. Tactile characters shall be duplicated in Braille complying with 703.5.
EXCEPTION: Tactile characters complying with 703.3, where separate visual characters complying with 703.4 provide the same information.
 
703.2.1 Finish and Contrast. Characters and their background shall have a non-glare finish. Characters shall contrast with their background with either light characters on a dark background or dark characters on a light background.
 
703.2.2 Tactile Characters. Tactile characters shall be raised 1/32 inch (0.8 mm) minimum above their background. Raised borders and decorative elements that are not required shall be separated 3/8 inch (9.5 mm) minimum from tactile characters.
 
703.2.3 Character Forms. Fonts shall have characters complying with 703.2.3.1 through 703.2.3.5.
 
703.2.3.1 Case. Characters shall be uppercase.
 
703.2.3.2 Style. Characters shall be sans serif. Characters shall not be italic, oblique, script, highly decorative or of other unusual forms.
 
703.2.3.3 Width. Character width shall be 55 per cent minimum and 110 per cent maximum the height of the character with the width based upon the uppercase letter "O" and the height based upon the uppercase letter "I".
 
703.2.3.4 Height. Character height measured vertically from the baseline of the character shall be 5/8 inch (16 mm) minimum and 2 inches (51 mm) maximum based upon the uppercase letter "I".
 
703.2.3.5 Stroke Thickness. For characters with rectangular cross sections, the stroke thickness of the uppercase letter "I" shall be 10 per cent minimum and 15 per cent maximum of the height of the character. For characters with other cross sections, the stroke thickness of the uppercase letter "I" shall be 10 per cent minimum and 30 per cent maximum of the height of the character measured at the base of the cross section. Stroke thickness at the top of the cross section shall be 15 per cent maximum of the height of the character.
 
703.2.4 Character Spacing. Character spacing shall be measured between the two closest points of adjacent characters within a message, excluding word spaces. Where characters have rectangular cross sections, spacing between individual characters shall be 1/8 inch (3 mm) minimum to 3/8 inch (10 mm) maximum. Where characters have other cross sections, spacing between individual characters shall be 1/16 inch (2 mm) minimum to 3/8 inch (10 mm) maximum at the base of the cross sections and 1/8 inch (3 mm) to 3/8 inch (10 mm) maximum at the top of the cross sections.
 
703.2.5 Line Spacing. Spacing between the baselines of separate lines of characters in a sentence or paragraph shall be 135 per cent minimum and 170 per cent maximum of the character height.
 
703.2.6 Mounting Height. Characters shall be located 48 inches (1220 mm) minimum and 60 inches (1525 mm) maximum above the adjacent floor or ground surface measured from the baseline of the characters.
EXCEPTION: This requirement shall not apply to elevator car controls.
 
703.2.7 Mounting Location. Where a sign containing tactile characters is provided at a door, the sign shall be located alongside the door at the latch side. Where a tactile sign is provided at double doors, the sign shall be located to the right of the right hand door. Where there is no wall space at the latch side of a single door or to the right side of double doors, signs shall be located on the nearest adjacent wall. Signs containing tactile characters shall be located so that a clear floor space of 18 inches (455 mm) by 18 inches (455 mm) minimum, centered on the sign, is provided beyond the arc of any door swing between the closed position and 45 degree open position.
EXCEPTION: Signs shall be permitted on the push side of doors with closers and without hold-open devices.
 
703.3 Tactile Characters. Where tactile characters are required and separate tactile and visual characters with the same information are provided, tactile characters shall comply with 703.3.1 through 703.3.6 and visual characters shall comply with 703.4. Tactile characters shall be duplicated in Braille complying with 703.5.
 
703.3.1 Tactile Characters. Tactile characters shall be raised 1/32 inch (0.8 mm) minimum above their background. Raised borders and decorative elements that are not required shall be separated 3/8 inch (9.5 mm) minimum from tactile characters.
 
703.3.2 Character Forms. Fonts shall have characters complying with 703.3.2.1 through 703.3.2.5.
 
703.3.2.1 Case. Characters shall be uppercase.
 
703.3.2.2 Style. Characters shall be sans serif. Characters shall not be italic, oblique, script. highly decorative or of other unusual forms.
 
703.3.2.3 Width. Character width shall be 55 per cent minimum and 110 per cent maximum the height of the character with the width based upon the uppercase letter "O" and the height based upon the uppercase letter "I".
 
703.3.2.4 Height. Character height measured vertically from the baseline of the character shall be 1/2 inch (13 mm) minimum and 3/4 inch (19 mm) maximum based upon the height of the uppercase letter "I".
 
703.3.2.5 Stroke Thickness. Stroke thickness of the uppercase letter "I" shall be 15 per cent maximum of the height of the character.
 
703.3.3 Character Spacing. Character spacing shall be measured between the two closest points of adjacent character within a message, excluding word spaces. Spacing between individual character shall be 1/8 inch (3 mm) minimum to 1/4 inch (6 mm) maximum.
 
703.3.4 Line Spacing. Spacing between the baselines of separate lines of characters in a sentence or paragraph shall be 135 percent minimum and 170 percent maximum of the character height.
 
703.3.5 Mounting Height. Characters shall be located 48 inches (1220 mm) minimum and 60 inches (1525 mm) maximum above the adjacent floor or ground surface, measured from the baseline of the characters.
EXCEPTION: This requirement shall not apply to elevator car controls.
 
703.3.6 Mounting Location. Where a tactile sign is provided at a door, the sign shall be located alongside the door at the latch side. Where a tactile sign is provided at double doors, the sign shall be located to the right of the right hand door. Where there is no wall space at the latch side of a single door or to the right side of double doors, signs shall be located on the nearest adjacent wall. Signs containing tactile characters shall be located so that a clear floor space of 18 inches (455 mm) by 18 inches (455 mm) minimum, centered on the sign, is provided beyond the arc of any door swing between the closed position and 45 degree open position.
EXCEPTION: Signs shall be permitted on the push side of doors with closers and without hold-open devices.







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更新日: 2019年7月20日

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