The Ontario Building Code | Fire Alarm Systems
220.127.116.11. Fire Alarm Systems
(1) Except as provided in Sentences (2) and (3), the fire alarm system in the main school building shall be extended to the portable classrooms with a separate zone indicator on the annunciator.
(2) The requirements in Sentence (1) need not be provided where there are not more than 12 portables on a site and where,
(b) the distance between portable classrooms is less than 6 m and the requirements of Subsection 3.2.3. are applied between the classrooms, or
(c) the portable classrooms are in groups where,
(i) the distance between the classrooms is less than 6 m,
(ii) the number of classrooms in a group does not exceed six,
(iii) within a group of classrooms, the facing walls have a fire-resistance ratingof 45 min, rated from inside the classroom, and
(iv) the distance between groups of classrooms is 12 m or more.
(3) The requirements in Sentence (1) need not be provided where the distance between portable classrooms is 6 m or more.