The Versatility of Radius Tiles for ADA Compliant Public Spaces

Over the last few years, more and more urban designers and architects are incorporating radius shapes as part of their exterior designs. These new shapes bring modern life to an intersection rather than the classic rectangular ramp pattern we are all accustomed to. These specific radius tiles are made-to-order and manufactured with the same nano-engineered polymer concrete material as the standard TekWay ADA Dome Tiles to ensure long lasting durability and functionality. 

Since designers specify all materials used on projects, it is a challenge to be knowledgeable regarding so many different products. Therefore, StrongGo Industries is offering their technical assistance during the development stage of projects to assist in the layout of curb ramps utilizing radius tiles. 

By working directly with the person responsible for the sidewalk layout, StrongGo can obtain key dimensions for each radius ramp and calculate the number of full-size and/or partial tiles required to populate any given ramp. With the designer aware of this, he/she has the option of adapting a ramp to allow for the use of only full-size tiles. This is a cost savings for the project-owner without sacrificing any purposeful design. 

Another benefit of TekWay ADA Radius Tiles is that standard tiles can be installed preceding and following a radius ramp while still maintaining ADA compliant dome spacing from tile to tile

Like with all TekWay High Performance ADA Products, and to ensure the durability of radius tiles, the contractor must follow the proven installation process to create a solid attachment and monolithic structure between the nano-engineered polymer concrete-based ADA domes and the concrete substrate. TekWay Installation Instructions can be obtained from the website 

The Benefit of True Radius Tiles

  • Reduces material costs by eliminating the need to cut square or rectangular tiles to fit into a radius ramp
  • Reduces labor costs by using tiles designed for a given location
  • Provides an aesthetically pleasing curb ramp feature

Installs radius ADA Dome-Tiles that are dimensionally correct in size and dome shape, possess color contrast and remain durable and functioning for the lifetime of the project. Detectable warning dome tiles must meet the ADA standards in color contrast, sound, and shape. This way they can adequately warn visually impaired pedestrians of potential hazards.

Reduces annual maintenance costs and greatly reduces the chance of having vegetation growing between the tiles and surrounding concrete with the lack of grout joints.

Common Uses for TekWay ADA Radius Dome-Tiles

  • ADA curb ramps
  • Escalator approaches
  • Pedestrian crossings
  • Stair landings
  • Transit platforms and stations
  • Vehicle roads
  • Wheelchair ramps

Components of TekWay ADA Radius Dome-Tiles

Radius tiles are produced in either 24-inch or 36-inch depths and can vary in radius from 10 – 60 feet. A key component here is that the domes are tapered to match the radius so that the ADA dome spacing remains ADA compliant in every design.

Color & Contrast

The ADA Accessibility Guidelines (ADAAG) have set forth standards for detectable warning materials including color contrast with the surrounding sidewalk. Therefore, there must be either light-on-dark or dark-on-light contrast between the sidewalk and the detectable dome tiles.

States differ on the level of contrast. Some require the ADA detectable dome tiles to meet or exceed 70% contrast.

For TekWay ADA Dome Products, all tile colors possess a Light Reflectance Value (LRV), the universal value for “contrast.” This value measures the proportion of useful light reflected by a colored object. LRV represents the relative light and darkness value of an item rather than an actual color since dissimilar colors can have the same LRV. Measured on a scale of 0 to 100, an LRV of 0 means absorption of black and a score of 100 is reflective of white.

To determine the color contrast needed for all detectable warning tiles including radius, the formula of [(B1 - B2) / B1] x 100 is used. The B1 represents the LRV of the lighter area while the B2 is the LRV of a darker area.

Please use the TekWay color contrast calculator at for determining the correct contrast for your project and reach out to us at to discover your radius tiles solutions.

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