The detectable warning criteria specify a pattern of evenly-spaced truncated domes....
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Truncated Domes
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3.3 Guidance on the Visual Properties of Detectable Warnings
On dark sidewalks (e.g. asphalt) use light colored detectable warnings with a high reflectance fact or to provide light-on-dark contrast rather than using darker detectable warnings to provide...
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Doors to Hazardous Areas (Reserved) [4.29.3] and Stairs (Reserved) [4.29.4]
Doors to Hazardous Areas (Reserved) [4.29.3] and Stairs (Reserved) [4.29.4] In the absence of a clear consensus on the need or specification for detectable warnings at doors and stairs...
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Detectable Warning Surfaces on Boarding Platforms Used by Buses and Rail Vehicles, and Boarding and Alighting Areas Used by Rail Vehicles (Section-by-Section Analysis)
Detectable Warning Surfaces on Boarding Platforms Used by Buses and Rail Vehicles, and Boarding and Alighting Areas Used by Rail Vehicles (Section-by-Section Analysis) The 1991 ADAAG...
- Detectable Warning Systems, Inc. AlertTile® Detectable Warning Installation Video
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11B-705.1.1.2 Dome spacing
Truncated domes in a detectable warning surface shall have a center-to-center spacing of 2.3 inches (58 mm) minimum and 2.4 inches (61 mm) maximum, and a base-to-base spacing of 0.65 inch...
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R208 Detectable Warning Surfaces (Section-by-Section Analysis)
R208 Detectable Warning Surfaces (Section-by-Section Analysis) Detectable warning surfaces consist of small truncated domes built in or applied to a walking surface that are detectable...
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11B-705.1.1.2 Dome spacing
Truncated domes in a detectable warning surface shall have a center-to-center spacing of 2.3 inches (58 mm) minimum and 2.4 inches (61 mm) maximum, and a base-to-base spacing of 0.65 inch...
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11B-705.1.1.2 Dome spacing
Truncated domes in a detectable warning surface shall have a center-to-center spacing of 2.3 inches (58 mm) minimum and 2.4 inches (61 mm) maximum, and a base-to-base spacing of 0.65 inch...
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11B-247.1.2.1 Platform edges
Platform boarding edges shall have detectable warnings complying with Sections 11B-705.1.1 and 11B-705.1.2.1....
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Platform Edges: ADA Standard Section 705.2
Detectable warning surfaces at platform boarding edges shall be 24 inches (610 mm) wide and shall extend the full length of the public use areas of the platform....
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11B-705.1.2.1 Platform edges
Detectable warning surfaces at platform boarding edges shall be 24 inches (610 mm) wide and shall extend the full length of the public use areas of the platform....
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Contrast
Detectable warnings are required to contrast visually from adjacent walking surfaces, either light-on dark or dark-on-light....
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11B-705.1.1.3.2
11B-705.1.1.3.2 Detectable warning surfaces shall provide a 70 percent minimum visual contrast with adjacent walking surfaces....
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11B-705.1.1.3.2
Detectable warning surfaces shall provide a 70 percent minimum visual contrast with adjacent walking surfaces....
- SafetyStepTD Powerbond Detectable Warning Mat Video
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Costs to Provide Detectable Warning Surfaces on Curb Ramps (Section-by-Section Analysis)
Costs to Provide Detectable Warning Surfaces on Curb Ramps (Section-by-Section Analysis) Detectable warning surfaces are available in a variety of materials....
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Contrast
Contrast Interior applications require that the warning feature provide contrast in resilience or in sound when sensed with a cane. The domes and their matrix must also offer a...
- Detectable Warning Systems, Inc. EZ Set Tile™
- Detectable Warning Systems, Inc. AlertCast® Detectable Warning Installation Video
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Detectable warnings on curb ramps
Curb ramps must have detectable warnings. (DOT ADA Standard 406.8.)...
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705.1.3 Contrast
Detectable warning surfaces shall contrast visually with adjacent walking surfaces either light-on-dark, or dark-on-light....
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705.1.3 Contrast
Detectable warning surfaces shall contrast visually with adjacent walking surfaces either light-on-dark, or dark-on-light....
- SafetyStepTD Ramp-Up Detectable Warning System Video