BILD Calgary Region Bulletin 2026 – 11

From:Kimber Higa, Director, Calgary Region Initiatives & Government Relations
Date:February 20, 2026
Subject:City of Chestermere: Single and Semi-family Dwelling Authenticated Roof Trusses March 1, 2026

The Government of Alberta has set a date for when authenticated roof-truss member details will be required for single- and semi-detached homes.

STANDATA Interpretation 23-BCI-015R1

Interpretation

  1. Wood trusses and truss assemblies must be designed and authenticated by a registered engineering professional.
  2. All aspects of wood trusses and truss assemblies required to be designed in accordance with good engineering practice, such as that described in TPIC, require authentication. Authenticated documents may include, but are not limited to, the information provided in Appendix H of the TPIC. Documents may not require authentication if the design information they contain is located in other documentation that is already authenticated.
  3. All wood truss joint connections must be designed in conformance with the requirements in Subsection 4.3.1and be authenticated.
  4. The authenticated truss drawings or other required authenticated drawings must be provided to the AHJ before their scheduled inspection or approval for covering as part of the permit conditions.

This INTERPRETATION is applicable throughout the Province of Alberta.

  • The City of Chestermere will require authenticated wood trusses and truss assemblies, along with connection details and design information, for single- and semi-detached homes. Authentication can be applied to the Truss Layout and Truss Profile, or to a single document, provided the content requiring authentication has been included.
  • Documents are preferred at the time of building permit application, but they must be received before proceeding from the Framing Inspection stage.
  • All other Part 9 (row housing) buildings will require authenticated layouts and truss member details.
  • Detached garages will not require authenticated documents.

Notice 23-BCI-015R1 Design of wood trusses for roof assemblies in Part 9 buildings implementation, March 1, 2026