ADA Tiles, Detectable Warning Surfaces, & Truncated Domes
ADA Tiles Overview
ADA Tiles, also known as tactile walking surface indicators (TWSI) or detectable warning panels, are special paver attachments that help the visually impaired to safely utilize pedestrian crossings, intersections, or hazardous drop-offs like transit platforms.
These tactile warning surfaces, mandated by the Americans with Disabilities Act, feature a raised, bumpy, slip-resistant surface in a different color than the surrounding concrete to assist with wayfinding. When installed properly, detectable warning panels can keep you and your neighborhood safe.
We can provide polymer, cast iron, or galvanized tactile paving options depending on your location and what your project calls for. We also boast an inventory of dozens of possible radius solutionsโway more than youโll find at a supply store. All our tiles adhere to ADA guidelines and IDOT specifications.
How to Calculate Radius
Our ADA tiles include linear, plate, and wedge options that can be combined to create more than 40 different radius configurations. To find your proper configuration, simply measure the chord length and height at the rear of the curb where the tactile surface will be applied.
ADA WARNING TILES
HOW DETECTABLE WARNING TILES WORK
Detectable warning surfaces are required by the Americans with Disabilities Act (ADA). Federal guidelines require warning mats to be of a minimum size and for truncated domes to meet specific diameter, height, and spacing requirements. These surface-mounted truncated domes can be felt through a cane, walker, wheelchair, or a person’s feet.
DOME SIZE
Truncated domes in a detectable warning surface shall have a base diameter of 0.9 inch (23 mm) minimum and 1.4 inches (36 mm) maximum.
DOME SPACING
Truncated domes in a detectable warning surface shall have a center-to-center spacing of 1.6 inches (41mm) minimum and 2.4 inches (61 mm) maximum.
CONTRAST
Detectable warning surfaces shall contrast visually with adjacent walking surfaces either light-on-dark, or dark-on-light.
PLACEMENT
- Curb Ramps
- Transit Platform Edges
- Street Intersections
- Track Crossings
OBSTACLES
- Uneven Surfaces
- Sudden Drops
- Traffic
- Unexpected Objects
- Rusting
- Not Properly Placed
MATERIALS
- Polymer Composite
- Galvanized Steel (Powder-Coated)
- Cast Iron (Powder-Coated)
COLORS
Yellow
Colonial Red
Brick Red
Patina
Dark Grey
Black
TYPES
RADIAL SIZES
15′
20′
25′
30′
LINEAR SIZES
2’x1′
2’x2′
2’x3′
2’x4′
2’x5′
Three Tile Options to Choose From:
Galvanized Steel (Recommended)
- Rustproof (include a 10-year rustproof warranty)
- Extremely durable, can hold up to snow removal equipment
- Feature an aesthetically pleasing powder-coated patina finish
- More affordable than cast iron tactile systems (easier to work with)
- Price varies by order weight
Polymer
- More cost-effective than galvanized steel or cast-iron options, but lack equal durability
- Can be wet set or applied later
- Minimum six-pallet order required to get materials at cost
- INDOT approved
Cast Iron
- These cast plates feature an aesthetically pleasing powder-coated patina finish
- Can also withstand snow removal equipment (plows, shovels, etc.)
- WISDOT, CDOT, and INDOT approved
- Price varies by order weight
ADA Tiles, Detectable Warning Surfaces, & Truncated Domes Installation
Detectable warning surfaces can be installed in wet concrete or applied directly to an existing concrete surface with the proper sealant. Installation requirements as outlined by the Proposed Guidelines for Pedestrian Facilities in the Public Right-of-Way (PROWAG) include:
- 2โโ concrete border
- 24โโ of patterned domes that cover the full width of the ramp
- 5โ set-back
- 1.6โโ-2.4โโ linear and radial center-to-center dome spacing
Where to Buy
Customers can pick up tiles at one of our many Ozinga locations throughout the Midwest.
Weโve been selling TufTile brand detectable warning products since 2014 and weโre the only ready mix company actively selling these warning mats. Our dispatchers can provide tile pricing with your ready mix concrete quote so you can avoid a last-minute dash for inventory when itโs time to pour. Contact us today to learn more.
Proper ADA Tile Installation Keeps Your Neighborhood Safe
Detectable warning mats for Americans with Disabilities Act (ADA) Solutions are government-mandated tactile warning surfaces that alert visually impaired pedestrians of their proximity to street crossings, transit platforms, or hazardous drop-offs. But in order for these tiles to be effective and keep pedestrians safe, they must be properly installed. ADA Tiles and Detectable warning surfaces
Read full solution
