|
|
QUESTION:
Does a party wall on a property line between two dwelling units that is required to have a 1 hour fire-resistance rating and be continuous from the top of the footings to the underside of the roof deck need to extend to the upper roof deck if one of the roofs decks is above the other in elevation.
DISCUSSION:
Normally a party wall on a property line has to be constructed as a firewall (Article 9.10.11.1.).Article 9.10.11.2. Firewalls Not Required is an exemption to this general requirement for party walls between residential buildings in which there is no dwelling unit above another dwelling unit.
This exemption allows for a continuous 1 hour fire-resistance rated fire separation to be constructed between the units from the top of the footings to the underside of the roof deck.
However, if the adjoining dwelling units do not have the same roof deck level, the fire separation must be continuous to the underside of the upper roof deck.
February 28, 1996
Back to the OBC Home Page
E-mail comments/questions to: OBC Advisory Service
© Copyright 2000 Queen's Printer for
Ontario.
This information is provided as a public service, but we cannot guarantee that the
information is current or accurate. Readers should verify the information before acting
on it.