Detectable warnings are common in most roads, pathways and sometimes buildings. They are a distinctive surface pattern that notifies visually impaired persons of their approach to road crossings and dangerous drop-offs. What’s more, they are a requirement by ADA and should and should follow the state’s code and regulations. There are different tactile detectable surfaces in the market, and choosing the best can be daunting. Are you shopping for detectable warning tiles and don’t know where to begin? Check out tips to guide you.
- Choose suitable colors.
Warning surfaces come in distinct colors; these are usually yellow, red and other bright hues. The state laws vary on the choice of colors, but ADA doesn’t require that you use a specific color. However, the guidelines require that you use a contrasting color to the surrounding surface. For instance, if the street or sidewalk features a dark color, your detectable surface should be light in color.
- Know the size requirements
You’ll get detectable warning surfaces from leading tactile walking surface indicators suppliers. They come in varying sizes and should meet exact measurements. For instance, truncated domes must feature a 0.9 to 1.4 inches diameter. Similarly, the height should be 0.2 inches above the surrounding surface.
A higher height will pose tripping hazards and make it difficult to move using wheelchairs and strollers. Moreover, the domes should be arranged in a grid to provide users with a distinct feel. The warning surface should be 24 inches long, extending to the direction of travel.
- Spacing is key!
As mentioned earlier, there are various ADA regulations on using and installing detectable warning surfaces. These specify the exact spacing between truncated domes depending on what works best when using a wheelchair, walker or other forms of aid. From the centre to the other, raised domes should be 1.6 to 2.4 inches apart. Also, there should be at least 0.65 inches of space between adjacent domes.
- Go for quality materials.
You’ll get detectable warning surfaces from different manufacturers and vendors. Get data from the American Society for Testing & Materials (ASTM) on the strength and quality standards before purchasing. Only buy products that meet the ASTM standards to ensure quality, reliability and safety.
- Consider the function& installation procedure
Detectable warning surfaces serve different purposes. They should be slip-resistant in any weather condition. That’s not all; they should have a low absorption capability to enhance their lifespan. The material expands or contracts depending on the temperature levels, and water can make the material less effective or pose dangers to users.
The installation method also matters depending on the type of product. For instance, holes in the cast-in-place tiles will help anchor the panel flanges. On the other hand, surface mounted systems come with adhesives and fasteners to secure them. Also, you need a high-quality sealant to seal the perimeter during installation.
In summary, there are various things to consider when shopping for detectable warning surfaces. You’ll get them in different colors and designs, and you should choose one to match the ADA regulations in your state. Also, shop from legitimate manufacturers to ensure quality and safety.
