Warning This information has been archived because it is outdated and no longer relevant.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the "Contact Us" page.

3.3.4.4.(5)
OS3
ObjectiveOS3 Safety in Use
Attribution
Application
Application 1: 
Opening of a doorway from a dwelling unit directly into an exit stairway, where the dwelling unit has a second and separate means of egress.
This applies to buildings of residential occupancy described in Sentence 1.3.3.2.(1) of Division A. that are not more than 3 storeys in building height.
Application 2: 
This also applies to tents and air-supported structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1).
Exceptions: 
except as stated in:
Top of Page
Intent
Intent 1: 
To exempt a doorway serving a dwelling unit from the requirements of Sentences 3.3.1.3.(8) and (9), which would otherwise require a doorway to the exterior, a public corridor or an exterior passageway, on the basis that there is a second means of egress from the dwelling unit available if the route through the exit stair is impeded, blocked, or untenable.
This is to limit the probability that persons will not have the choice of an alternative egress route in the case where one route is blocked or obstructed in an emergency situation, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.
Top of Page