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ADA Resources

Specification & Technical

Installation & Maintenance

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ADA Regulations

The Americans with Disabilities Act (ADA) came into standardization in the 1990’s, and states all persons must have equal access to public spaces, jobs, infrastructure, and more. The ADA Accessibility Guidelines (ADAAG) were revolutionary because it held true for all persons, regardless of ability, and made specific mention of persons with disabilities. With the advent of these ADA regulations truncated dome tile, or Tactile Walking Surface Indicators (TWSI), soon became a requirement in public spaces across the country.

In our section titled ADA Regulations we break down what it means to be ADA compliant, and how exactly our detectable warning tiles meet and surpass these standards. This section also discusses the California Title 24 Requirements, which provide further accessibility guidelines for detectable warning pavers.

Specifications & Technical Drawings

This section is your hub for all of our specifications and technical drawings, all of which are available as downloadable PDFs.

Installation & Maintenance

Installation or replacement of our ADA warning mats is remarkably easy, and able to be completed in under 5 minutes per tile. Tactile Services, LLC products can also be cut with ease, without voiding your warranty, in order to place ADA tiles in tricky or tight locations.

Further, the composite used in all of Tactile Services, LLC detectable warning pavers is abrasion and corrosion resistant, but it is also non-porous. While this is a good thing, because it allows all of our ADA Compliant Tiles to survive the harsh freeze-thaw cycles of northern winters, it also means grime collects on the surface. As such, it is recommended that all tactile paving is regularly cleaned and maintained in order to stay compliant with ADA regulations. This page details the complete installation instructions for all of our tiles, as well as the complete maintenance processes. As always, downloadable versions of these instructions are available via PDF on our Installation and Maintenance Instructions page.

  • R304.1 General. Detectable warnings shall consist of a surface of truncated domes aligned in a square or radial grid pattern and shall comply with R304.
  • R304.1.1 Dome Size. Truncated domes in a detectable warning surface shall have a base diameter of 23 mm (0.9 in) minimum to 36 mm (1.4 in) maximum, a top diameter of 50 percent of the base diameter minimum to 65 percent of the base diameter maximum, and a height of 5 mm (0.2 in).
  • R304.1.2 Dome Spacing.Truncated domes in a detectable warning surface shall have a center-to-center spacing of 41 mm (1.6 in) minimum and 61 mm (2.4 in) maximum, and a base-to-base spacing of 17 mm (0.65 in) minimum, measured between the most adjacent domes.
  • R304.1.3 Contrast. Detectable warning surfaces shall contrast visually with the adjacent gutter, street or highway, or walkway surface, either light-on-dark or dark-on-light.
  • R304.1.4 Size. Detectable warning surfaces shall extend 610 mm (24 in) minimum in the direction of travel and the full width of the curb ramp (exclusive of flares), the landing, or the blended transition.
  • R304.2 Location and Alignment:
    • R304.2.1 Perpendicular Curb Ramps. Where both ends of the bottom grade break complying with R303.3.4 are 1.5 m (5.0 ft) or less from the back of curb, the detectable warning shall be located on the ramp surface at the bottom grade break. Where either end of the bottom grade break is more than 1.5 m (5.0 ft) from the back of curb, the detectable warning shall be located on the lower landing.
    • R304.2.2 Landings and Blended Transitions. The detectable warning shall be located on the landing or blended transition at the back of curb.
    • R304.2.3 Alignment. The rows of truncated domes in a detectable warning surface shall be aligned to be perpendicular or radial to the grade break between the ramp, landing, or blended transition and the street.

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Tactile Services, LLC. offers a large variety of ADA truncated domes, detectable wayfinding bar tiles, and curved radius tactile tiles. Please Fill out the email area below to request a quote a representative will be in touch with you within 24 hours.