24 177181 ALT

Project Description

The correspondence has been prepared as an Alternative Solution Proposal as specifically requested by the City of Toronto in the past, as notwithstanding recent clarification changes to the OBC with respect to smoke dampers in ducts and air-transfer openings in residential public corridors as noted in Sentences 3.2.6.2.(5.1) and 3.1.8.8A.(2), the project is subject to the requirements of the 2012 Ontario Building Code (OBC, O.Reg. 332/12 as amended to O.Reg. 762/20, i.e., Code of Record), based on the date of permit application. Since the application for the Building Permit of the project, an amended Building Code Regulation has been issued and come into force. OBC, O.Reg. 30/23 specifically addresses the subject matter of the permission to waive smoke dampers in certain locations in OBC Sentence 3.1.8.8A.(2), and the revised language clarifies the intent that the branch ducts of make-up air systems penetrating the public corridor fire separation can apply the waiver permitted in Subclause 3.1.8.8A.(2)(a)(iii), as the revised wording adds a specific reference to OBC Sentence 3.2.6.2.(5.1), applicable to the public corridor make-up air system configuration of the project. It is important to note that no other related OBC requirements were altered in the amendment by O.Reg. 30/23 (several requirements related to demountable stages and support structures were added).

Permit Details