The Ontario Building Code | Definitions
11.1.1.2. Definitions
(1) In this Part,
building system means a combination of elements or components that form a complete major division of construction in the design of a building or part of a building, including a structural or framing system, a waterproofing system, a drainage system, an exterior cladding system, a roofing system, a window system, a partition system, a corridor system, a stair system, a fire alarm and detection system, a sprinkler system or a heating, ventilation or air-conditioning system, a foundationsystem, a standpipe and hose system, a flooring system, a plumbing system, a sewage system or an electrical system.
11.1.2. Application
11.1.2.1. Extension, Material Alteration or Repair
(1) Where an existing building is subject to extension, material alteration or repair,
(a) the proposed constructionshall comply with Section 11.3., and
(b) the performance level of the building shall be evaluated and compensating construction shall be undertaken in accordance with Section 11.4.
Section 11.2. Classification of Existing Buildings
11.2.1. Classification
In Plain Language
This article provides definitions specific to Part 11, clarifying terms used throughout the renovation and existing-building provisions that follow.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.