NAKA Tactile Indicators
Tactile ground surface indicators provides the blind or visually impaired a physical cue. It is detectable either underfoot or by the use of a white cane. Tactile ground surface indicators are only one source, amongst many, of orientation information. Unlike some other tactile indicators which are basically generic by nature, tactile ground surface indicators have a specific function and impart specific information about the immediate surroundings.
Tactile ground surface indicators act as, and are interpreted as, landmarks. There are two types of tactile ground surface indicators:
(a) Warning indicators such as NDD1305 and NDD1114C ; and
(b) Directional indicators such as NDT1305
(a) Warning indicators
As the name suggests, warn of either a hazard or a destination. For example, a warning indicator near the edge of a staircase landing warns of the edge of the landing which, otherwise, would pose a significant hazard to a pedestrian with low vision. As the person approaches the edge, the tactile warning treatment will be identified either by the white cane or underfoot, thus warning of an impending drop to the staircase.
(a) Directional indicators
Directional indicators are used to direct the user from one point to another along a safe path of travel. They are only required when there are insufficient cues from other sources to achieve the same result. For example, a directional indicator may be used in an open pedestrian plaza to indicate a clear path of travel in the absence of any other cues.
BASIC INSTALLATION GUIDE
It is very important that prior to installation, the project is planned and set out to achieve a satisfactory and compliant result. Layout the NAKA Tactile Indicator tiles in the designated areas, using a straight edge / string line or tape to ensure the lines are straight.
Substrates must be uncontaminated and unsealed. NAKA Tactile Indicators must be installed on a smooth, flat and dry surface, to ensure adhesive has maximum surface area contact with substrate. Any irregularities must be corrected before installation of the NAKA Tactile Indicators.
- Ensure installation surface is sound
- Measure layout in compliance with approved drawings
- Align warning or directional template to mark layout
- Tape template down to stop movement while drilling
- Set drilling depth gauge includes allowance for template thickness
- Drill hole with 8mm concrete drill bit (for concrete base)
- Drill hole with 8mm diamond core drill bit (for tile or stone base)
- Check the depth regularly
- Remove drilling template
- Vacuum or blow out substrate dust
- Inject approved MASON C-RE 585 epoxy into clean holes
- Fill hole from bottom leaving a small bead
- Epoxy should fill the cavity under the stud or strip
- Twist and press stud to release air bubbles and ensure flush fit
- Clean up if required
- Allow min 6hours to fully cure the epoxy
NAKA Tactile Indicators installed in Various Projects in different types of base materials: