安大略省 2024 年建筑规范纲要的第一卷 2024 Ontario Building Code Compendium Volume 1

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The Compendium is not an official copy of the Act and Code. Official copies of the legislation can be accessed from www.ontario.ca/laws.

Ministry of Ministère des

Municipal Affairs Affaires municipales

and Housing et du Logement

Building and Development Direction du bâtiment

Branch et de l'aménagement

777 Bay Street, 12th Floor 777, rue Bay, 16e étage

Toronto ON M7A 2J3 Toronto ON M7A 2J3

Telephone: 416 585-6666 Téléphone : 416 585-6666

www.ontario.ca/buildingcode www.ontario.ca/buildingcode

May 29, 2024

TO: BUILDING CODE USERS

Enclosed, please find the Ministry’s official compendium of the 2024 Building Code.

This edition of the Building Code Compendium amalgamates Ontario Regulation 203/24 with errata

(superseding O. Reg. 163/24) which adopts the 2020 National Building Code (NBC) together with the

document “Ontario Amendments to the National Building Code of Canada 2020”. This Compendium also

contains the Building Code Act, the Supplementary Standards referenced by the Building Code and

additional explanatory material in Appendix Notes which are prepared for purposes of convenience only.

The 2024 Building Code is effective January 1, 2025. On this date, Ontario will proudly celebrate the

50th Anniversary of its first provincial Building Code that came into force in 1975.

This new edition reflects further harmonization between Ontario’s Building Code with the 2020 NBC.

Highlights of some of these new Code changes include:

• Harmonizing Ontario’s two-unit “house” provisions with the NBC requirements for secondary suites

except for maximum suite size.

• Adopting NBC provisions for a new Part 2 “Large Farm Buildings”.

• Further harmonizing with NBC structural, envelope, HVAC and plumbing provisions.

• Harmonizing with NBC provisions for radon mitigation to require a rough-in for a subfloor

depressurization system in new houses.

• Further harmonizing Ontario’s fire protection provisions with the NBC for standpipes, fire alarms and

sprinkler systems, and expanding areas where carbon monoxide alarms are required.

The 2012 Building Code continues in force where a permit has been issued on or before December 31,

2024, or for which working drawings, plans and specifications are substantially completed on or before

December 31, 2024 and an application for permit is made on or before March 31, 2025. The above

conditions apply where construction is commenced within six months after the permit is issued.

ServiceOntario Publications is the official publisher and vendor of the 2024 Building Code Compendium.

You may contact ServiceOntario Publications by phone at 416-326-5300, 1-800-668-9938 (toll-free) or

www.serviceontario.ca/publications. A digital version of the Ministry’s official 2024 Building Code

Compendium is also available. For further information, please visit the Building Code website at

www.ontario.ca/buildingcode.

Mansoor Mahmood, Ph.D., P.Eng.

Director

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摘要：

安大略省 2024 年建筑规范纲要的第一卷（2024 Ontario Building Code Compendium Volume 1）是安大略省官方发布的建筑法规权威汇编，涵盖住宅、商业及工业建筑的设计、施工、改造与维护的强制性技术要求与安全标准。本卷整合了最新修订的建筑规范条款，包括结构安全、防火措施、无障碍设计、能效要求及管道系统等内容，是建筑师、工程师、承包商以及建筑行业从业者进行合规审查与项目规划的核心参考文件。通过应用本规范，可确保建筑项目符合省级法规要求，提升施工质量与公共安全水

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安大略省 2024 年建筑规范纲要的第一卷 2024 Ontario Building Code Compendium Volume 1

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