EasyArc from TufTile determines the correct material for a Detectable Warning Tile installation using 2 measurements. The measurements are a combination of Radius, Chord Length, Arc Length or Rise. Plug in the the 2 values, click the Calculate button to work out the exact Tiles and Wedges to build your installation. You can then have the App draw the layout and provide the parts list which can then be emailed to yourself or a 3rd party.