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Grooves, exposed aggregate, and other designs intended for use as detectable warning are too similar to pavement textures, cracks and joints and are not considered equivalent facilitation.
The detectable warning with a bar tile cue was a modification to the truncated dome detectable warnings that are required at curb ramps in the United States (U.
The guidelines define a detectable warning as "a standardized surface feature built in or applied to walking surfaces or other elements to warn visually impaired people of hazards on a circulation path.
Recognizing this perspective and experience, skepticism and opposition to raised truncated domes has increased among government standard-setting bodies, such as the American National Standards Institute (ANSI), which removed the detectable warning requirement from its list of accessibility standards in 1992.
Detectable warning mats are supplied by Material Sales, Int'l.
5 sy concrete sidewalk; 5 ea pedestrian ramp with detectable warning domes; 250 cy crushed aggregate for base; 487.
A detectable warning is "a standardized surface feature built in or applied to walking surfaces or other elements to warn people who are blind or visually impaired of specified hazards" (Public Rights-of-Way Access Advisory Committee, 2001, PROWAAC, p.
1 Committee action to delete specific standards related to detectable warning surfaces.
300 sf of 4" concrete sidewalk; 1 ea detectable warning field; 100 lf street handrail, installed and coated; 1 ls route restoration and landscaping; 1 ls erosion control; 1 ls traffic control; 1 ls excavation and disposal.
The Architectural and Transportation Barriers Compliance Board (Access Board) will conduct a seven-month project with an optional one-year extension to study requirement for the installation of detectable warning surfaces.
Tenders are invited for approx 8,400 sf of new concrete sidewalk; detectable warning surface 6 un 3; concrete driveway apron, 6" thick 355 sf; white extruded thermoplastic crosswalk 50 sf 5.
Tenders are invited for excavation, tree trimming, erosion control, paving, marking, milling, lighting, sidewalk, detectable warning, concrete seat wall, signage, electrical, drainage and related work.
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