The Ontario Building Code | Tactile Attention Indicators
220.127.116.11. Tactile Attention Indicators
(1) Where a tactile attention indicator is required, it shall conform to Sentence (2) and Clauses 4.1.1. and 4.1.2. of ISO 23599, "Assistive Products for Blind and Vision-Impaired Persons – Tactile Walking surface Indicators".
(2) The depth of the tactile attention indicator shall be not less than 300 mm and not more than 610 mm.
Section 3.9. Portable Classrooms