Truncated Domes ADA Access Tile - 3' x 5' Mat - Surface Mount

PRODUCT SPECS

• Model: ACC-S-3660
• Size: 3' X 5'

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SURFACE MOUNTED  -  HIGHLIGHTS

• Tile geometry allows for consistent dome spacing between adjoining tiles.
• High density, diamond grip™ pyramid micro texture designed for exceptional slip resistance in wet and dry conditions.
• Tamper-proof, countersunk, stainless-steel Axius® fastener set flush with truncated dome surface
• Audible detectability technology engineered for sound amplification.
• Textured surface to allow optimum adhesive bond.
• Maximized strength load transfer design, bosses, located directly under domes transfer loads directly to substrate.
• Adhesive location identified on the reverse side of tile for easy error-free installation.
• Tiles are Slip resistant, corrosion resistant, and abrasion resistant

TILE SIZING

• 1'x1' - Surface Mount - Retrofit
• 2'x2' - Surface Mount - Retrofit
• 2'x3' - Surface Mount - Retrofit
• 2'x4' - Surface Mount - Retrofit
  (Most Popular Size)
• 2'x5' - Surface Mount - Retrofit
  
• 3'x4' - Surface Mount - Retrofit
  
• 3'x5' - Surface Mount - Retrofit
  
• 30"x24" - Radius Curve Tile -
  Radius Curve Calculator
  

Full Installation Guide

Technical Spec Sheet

Submittal Package

BRIGHT COLORS FOR MAX VISIBILITY

Yellow and other bright colors like orange and red reflect light making them easier for the eye to see even with severe visual impairment.  This is why most of the ADA products sold are typically bright colors such as:

Federal Yellow -YW.

The following color options are also available for the Surface Attached Tiles. Call us if you cannot find the color you're looking for.

Ochre Yellow - OCR
Brick Red - RD
Colonial Red - COL
Ocean Blue - BL
Bright White - WH
Light Gray - LG
Dark Gray - DG
Onyx Black - BK

INSTALLATION &
MAINTENANCE GUIDE

Full step by step installation and maintenance guides for our Cast In Place and Surface Mount Access Tiles can be found on our Installation and Maintenance Page.

Adhesion location identified on the reverse side of the tile for easy, error-free installation

Installation Instructions for Access Tile's ADA Compliant Tiles - FULL GUIDE HERE

SHIPPING

• All items ship for free (standard ground, see map)
• Call: (800) 604-5537 for pricing and shipping questions.

Shipping estimates shown on the map pertain to this specific product only. Orders typically om 3-4 business days if the order is placed before 12:00pm noon EST. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.

FREQUENTLY ASKED QUESTIONS

Questions about our Access Tile products?  Visit our FAQ section here.

1. Review the Project Plans & Installation Location

While preparing the surface and installing the Surface Applied Detectable Tactile Warning Surface Tiles, make sure all procedures are met and adequate safety guidelines are in place. All these requirements are in accordance with the industry and government standards. You should coordinate with the contractor or engineer to guarantee that the surfaces being prepared and fabricated for the tiles are constructed correctly and are good for installation. Review the design drawings with the contractor before construction and refer all discrepancies to the engineer.

2. Mark Tile Placement with Marker

Set the tile true and square to the curb ramp area as shown in the design drawings so the location can be marked on the concrete surface. Tip, a thin permanent marker will work very well for marking. Remove the tile when you are done marking the location

3. Clean Surface for Installation

The surface where the Detectable Tactile Warning Surface Tile will be located must be mechanically cleaned with a diamond cup grinder or shot blaster to remove any dirt or foreign material. The cleaning and roughening of the concrete surface should include at least 4 inches around the perimeter of the area for the tile and along the cross pattern established by the corresponding area on the backside of the tile. Those areas must be cleaned with a clean rag soaked in Acetone.

Immediately before installing the Surface Applied Detectable Tactile Warning Surface Tile, the concrete surfaces must be inspected to guarantee they are clean, dry, free of voids, curing compounds, projections, loose material, dust, oil, grease, sealers, and are considered structurally sound and cured for a minimum of 30 days.

Use Acetone and wipe the backside of the tile around the perimeter and along the internal cross pattern to remove all dirt or dust particles from the area that will receive the adhesive.

5. Drill & Install Fasteners

Working from the center outward, drill and install all fasteners in the tile's molded recesses.

Standing with both feet applying pressure around the molded recess in the tile, drill a hole true and straight to a depth of 3-1/2” using a 1/4” drill bit. Drill through the tile with the hammer until the tile has successfully penetrated. Using the option of the hammer, drill into the concrete. Maintaining foot pressure on both sides of the hole while drilling prevents concrete dust from building up between the tile and concrete which can affect the tile being installed flush and could compromise installation integrity.

Before moving on to the next tile, immediately after drilling each hole, and while applying foot pressure, mechanically fasten the tiles to the concrete substrate using a leather-bound or hard plastic mallet to set the fasteners. Make sure the fastener has been placed to full depth in the dome, straight and flush to the top of the dome. Drive the pin of the fastener with the mallet making sure to avoid any inadvertent blows to the truncated dome or tile surface.

7. No Traffic Until Cured

Do Not allow foot traffic on the installed tiles until the perimeter caulking sealant has cured sufficiently to avoid tracking. Any adhesive on the surface of the Armor-Tile can be removed with Acetone.

Bonus Material - Installation Tips

Installing Adjacent Truncated Dome Tiles

If you are installing adjacent tiles, pay attention to the orientation of each tile. Paying careful attention will show that one of the long edges of the tile is different from the other in regard to the tiny dotted texture. You may also see a larger perimeter margin between the tiny dotted texture pattern begins. Consistent orientation of each Armor-Tile is required in order that the truncated domes on the adjacent tiles line up with each other.

In order to ensure proper spacing between truncated domes on adjacent tiles, the tapered edge should be trimmed off using a continuous rim diamond blade in a circular saw or mini grinder. The use of a straightedge to guide the cut is also required. All cuts should be made before the installation of the tiles. If installing adjacent tiles, take care to leave a 1-8” gap between each tile to allow for expansion and contraction.

Custom Fit Cut Tiles

If tiles will be custom cut to size, if pre-molded recesses to receive fasteners are removed by the cut, or to maintain a tight installation to the substrate, then any truncated dome can be centered-drilled with a 1/4” through the hole and countersunk with a suitable bit to receive mechanical fasteners. Care should be shown to not countersink too widely or deeply. Fasteners should be flush with the top of the truncated dome when countersunk correctly.

What Are Truncated Domes and Where Are They Required?

Approximately 12 million people aged 40 and above in the US have impaired vision, including 1 million who are blind, 3 million who have visual acuity after correction, and another 8 million who have poor vision due to uncorrected refractive error? According to the CDC, vision loss causes a substantial toll on the lives of millions of Americans. To make these individuals' lives better, different laws require installing truncated domes in public spaces.

What Are Truncated Domes?

If you've ever stepped on tactile paving, then you have an idea of what truncated domes are. As the name suggests, they are pavers made to be seen, felt, and heard, providing a detectable warning to pedestrians, especially the visually impaired.

These detectable warning systems are designed to make public spaces more accessible and safer. Often, they come with wayfinding bars that safely guide all pedestrians. Therefore, these pavers enhance the safety of everyone in your community, regardless of their abilities. Typically, truncated domes are either square or rectangular and have bumps on the surface. These bumps can often be circular, signifying 'stop' or rectangular, indicating 'go.'

Different countries have unique requirements and standards. These standards determine the color, size, shape, and distribution of the bumps. Truncated domes are mostly made of heavy-duty polyurethane, ceramic, or concrete. This is because these substances are durable.

Although they're popular for their safety, these pavings are sometimes controversial since the bumps can sometimes pose challenges to those in wheelchairs and are sometimes slippery. However, as this article by Perkins School for the Blind highlights, there have been efforts to make truncated domes safe for use by everyone.

Americans With Disabilities Act (ADA) & Truncated Domes

The Americans with Disabilities Act is one of the laws that recognize the rights of individuals with disabilities. Formulated in 1990, this Act prohibits discrimination of disabled persons. It applies to employment, movement, and accessibility to public spaces. As mentioned earlier, different laws exist that require you to install tactile pavers in specific areas. These laws include ADA, the Public Right of Way Act, and California Title 24 requirements.

ADA requires that all public spaces be accessible and that community members find it convenient and enjoyable when in such spaces. Most notably, the Act requires you to use truncated domes as visual and tactile warning systems for those with visual impairments. To strengthen the ACT, the government introduced ADA standards. A section of the standards specifies that truncated domes must be installed in spaces accessible by the public.

These spaces include but are not limited to parking garages, escalators, stairs, transit platforms, wheelchair ramps, and pedestrian crossings.

Besides, there exist ADA Accessibility Guidelines, which specify the requirements for truncated dome installation. Some of the specifications include:

• General: This section specifies that detectable warnings must comprise truncated domes aligned in square or radial grid patterns.
• Dome Size: Truncated domes must have a base diameter ranging between 23 mm (0.9 in) and 36 mm (1.4 in) maximum. The top diameter must be 50%-60% of the base diameter, and the height must be 5 mm (0.2 in).
• Dome Spacing: The center-to-center spacing of the truncated must be a minimum of 41 mm (1.6 in) and a maximum of 61 mm (2.4 in). The base-to-base spacing must be at least 17 mm (0.65 in).
• Contrast: The surface of a truncated dome must visually contrast the adjacent walkway surface, highway or street, or gutter. I'll discuss this requirement in detail in a subsequent subheading.
• Size: A tactile paver's surface must extend by at least 610 mm (24 in). It should be in the direction of travel.
• Location: Suppose a perpendicular curb ramp's bottom grade break's ends are at most 1.5 m (5.0 ft) or less from the curb's back. In that case, you should install the truncated dome on the ramp surface at the grade break's bottom. Otherwise, it should be installed on the lower landing. For landings and blended transitions, the truncated dome should be installed on the blended transition at the curb's back or landing.
• Alignment: The guidelines require that you align the rows of truncated domes either perpendicularly or radially to the grade break between the blended transition and the street, ramp, or landing.

Follow these steps to install a surface-mount tactile paver:

• Ensure the surface is free of moisture, debris, oil, and grease.
• Apply an adhesive to the tile's underside.
• Set the tile on the installation area
• Once the tile is in the correct location, drill holes into the cement at the pre-formed fastener locations.
• Apply adhesive around the edge of the tile as necessary

Where Are Truncated Domes Required?

Now that we've discussed the relevant guidelines to follow when installing truncated domes, let's discuss the location specification in more detail. Here are some of the places that require tactile surfaces:

Besides, there exist ADA Accessibility Guidelines, which specify the requirements for truncated dome installation. Some of the specifications include:

Curb Ramps

Curb Cuts allow scooters, walkers, and wheelchair users to travel between sidewalks and streets safely. However, visually impaired persons may find it difficult to identify these transitions.

Therefore, truncated domes are required at the transitions between streets and sidewalks, where curbs indicate crosswalks or anywhere with a cut. For instance, truncated domes on sidewalks tell blind or partially blind individuals that they are moving traffic nearby or are in a safe area.

Street Intersections

Curb cuts at street intersections must have tactile pavers. Local authorities usually install curb cuts at pedestrian crossings, easing access to building entrances and easing the transition to and from parking garages. Besides, they may install curb ramps and truncated domes at nearby crossings, depending on public facilities' availability or if people with mobility disabilities suggest they are needed.

Track Crossings

Tactile pavers are required on sidewalks leading to track crossings. As a general principle, the pavers must be far enough to alert people well in advance before their lives could be at risk. A distance of 6-15 ft (1.83-4.57 m) from the nearest rail's centerline is mostly considered sufficient. 

The distance leaves enough room for train gates to close, keeping individuals far enough from passing trains.

Islands or Cut-Through Medians

As a general rule, any raised islands at crossings must be level with the street. Besides, they must be cut through. Alternatively, they can have curb cuts on both sides.

The direction of the curb cut's running slope must have a level of length 48 in (121.92 cm) and width 36 in (91.44 cm) at the minimum.

Caution: It's not advisable to install truncated domes on steep slopes.

Meanings of Patterns on Tactile Paving

Now that we've discussed the areas where truncated domes are required, let me pose a question:

Have you ever noticed how tactile pavers' patterns often change, depending on the location?

If you've been keen enough, you may discover that these patterns depend on the hazards that are present in the specific locations. That is because different truncated domes' patterns indicate various dangers. Here are some of the patterns and their meanings:

Further Reading on Truncated Domes

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