Detectable Warning Tile Radius Calculator

Diagram illustrating Arc Length, Height, and Chord Length

If project plans do not contain the radius size:

From these 2 field measurements the calculator will determine the actual RADIUS SIZE. Enter measurements in yellow boxes below. All measurements must be in feet and in decimal format, not fractions. Example: 1' 6" = 1.5 ft; 2' 3" = 2.25 ft

Option 1

Use Standard TufTile Radius

Select the closest fitting radius from the list below. These “standard” size radii use the same tile and same radius wedge throughout the full radius assembly.

Option 2

Use TufTile Radius Calculator

Find the closest–fitting combination of tiles and wedges with our interactive tool. Get Started

Standard TufTile Radius Sizes

A “standard” radius uses one wedge size and one linear tile size in an alternating pattern. This chart shows the 20 standard radii that can be formed with TufTile products and the tile and wedge sizes required for each. Estimate the number of tiles and wedges needed to cover your project area by dividing the tile width for that radius into your ramp's chord or arc length. Additional material may be required to fully cover the surface area of your project.

Example: A 15R ramp 12' wide would need roughly 5 - 15R wedges and 6 - 2' x 2' tiles (6 x 2 = 12)

Radius Size		Wedge		Tile
8.8R	=	15R	+	2' x 1'
11.5R	=	20R	+	2' x 1'
14.1R	=	25R	+	2' x 1'
15R	=	15R	+	2' x 2'
16.8R	=	30R	+	2' x 1'
18R	=	15R	+	2' x 2.5' *
20R	=	20R	+	2' x 2'
21R	=	15R	+	2' x 3'
24.2R	=	20R	+	2' x 2.5' *
25R	=	25R	+	2' x 2'
27.2R	=	15R	+	2' x 4'
28.5R	=	20R	+	2' x 3'

Radius Size		Wedge		Tile
30R	=	30R	+	2' x 2'
30.4R	=	25R	+	2' x 2.5' *
33.4R	=	15R	+	2' x 5'
35.8R	=	25R	+	2' x 3'
36.6R	=	30R	+	2' x 2.5' *
37R	=	20R	+	2' x 4'
43.3R	=	30R	+	2' x 3'
45.5R	=	20R	+	2' x 5'
46.7R	=	25R	+	2' x 4'
56.5R	=	30R	+	2' x 4'
57.5R	=	25R	+	2' x 5'
69.8R	=	30R	+	2' x 5'

*cast iron only

Our Radius calculator is provided as a reference to help you estimate the amount of material you need for your project. This calculator provides an ESTIMATE. Coverage is affected by a number of factors. ** In order for us to ensure that you have adequate material for your job, please round up to the nearest foot. The colors shown are provided only as a reference, as monitors may vary in hue, saturation, and brightness.

This tool is currently optimized for desktop environments and is not configured for mobile compatibility. Functionality may be limited or unavailable on mobile devices.