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Handy tips For Installing Tactile Walking Surface Indicators Pathways

As a contractor, do you face difficulties in translating the project requirements into the actual project? Is it because of the lack of understanding about the code standards? If so, we will help you out. Lack of understanding about the code standards results in the disapproval from the project inspector. This is the reason contractors must acquaint themselves with the required code standards before installing Tactile Walking Surface Indicators Pathways, in their facility. All the tactile indicators must comply with the national, provincial and regional code standards. Also, they must meet the AODA guidelines and pass the rigors test requirements.
Tactile Walking Surface Indicators Pathways,

Contractors have to ensure the tactile indicators are color compliant and are easy to install. To avoid any deviations from the standards, contractors have to follow proper installation guidelines.

Installation guidelines for tactile walking surface indicators

With the help of attention TWSI's contractors can provide safety information to pedestrians at potentially dangerous locations. Before installing tactile indicators like Surface Applied Detectable Warning Systems, contractors have to take the following installation guidelines into account.


  • If flat-topped truncated domes or cones are used in the facility, they must be present in a square pattern, parallel or diagonal at 45 degrees to the direction of travel. 
  • The height of the domes or cones should not be more than 4-5 millimetres. 
  • The diameter of the flat-topped domes at the top should be between 12-25 mm. 
  • The diameter of the flat-topped domes at the bottom should be 10 mm more than the diameter of the top.

Surface AppliedDetectable Warning Systems

As far as the spacing between the flat-topped domes or cones is concerned, it should be based on the size of the tactile indicator. According to experts, the optimal size for the top diameter of the dome and cones is 12 mm, making it easy for people with visual impairment to detect the surface.

In addition to the above installation guideline contractors have to take the area of application into account. Some of the common places where contractors can install attention tactile walking surface indicators include:


  • Platform edges 
  • Ferry dock edges 
  • Edges of reflection pools and fountains 
  • Contractors can install tactile indicators at the top of the stairs, where there is a door leading to the landing. 
  • At landings that are longer than 2, 100 mm where there are no continuous handrails. 
  • Curb ramps and depressed curbs  
  • At the unprotected edges with a drop off greater than 250 mm height. 


As a contractor, next time you go for the installation of tactile indicators like tactile warning strips, follow these guidelines to comply with the project requirements.
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