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OBC DIVISION B · PART 3 · SECTION 3.17 — DEMOUNTABLE STAGES AND SUPPORT STRUCTURES

Are guards required on the edges of temporary stages in Ontario?

Yes, in principle: raised stage platforms need protection against falls at edges, ramps and stairs, generally guards where drops are significant, except at open performance edges where guards are impractical, which are instead managed through marking and operational controls.

Code reference
Demountable stages must address fall protection at their elevated edges consistent with the Code's guard principles: sides, rear edges, stairs and ramps serving a raised platform require guards where the fall height warrants them, while the downstage performance edge, where a guard would defeat the stage's function, is addressed through visibility marking and management rather than a physical barrier.
OBC Division B, Section 3.17; guard provisions of Division B Part 3

Paraphrased for clarity — open this provision in the BUILDAiD Library for the exact wording.

What this means in practice

The tension in stage design is that the audience-facing edge cannot have a guardrail, so codes and industry practice concentrate protection everywhere else: guarded rear and side edges, guarded stairs and access ramps, toe boards where equipment could be kicked off, and high-visibility edge marking downstage. Performer and crew falls from unguarded side edges during load-in, in the dark, are the common injury, so temporary guards that stay up until showtime are good practice. Ontario's Occupational Health and Safety Act applies to workers on the stage alongside the OBC requirements.

Plain language

The back and sides of a raised stage, and its stairs and ramps, need railings so performers and crew cannot fall off in the dark. The front edge facing the crowd stays open, so it gets bright marking and careful management instead.

Related questions

When does the Ontario Building Code apply to demountable event stages?What engineering is required for demountable stages and support structures in Ontario?What inspections are required for demountable stages in Ontario?

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This page is provided for general information. Building code requirements depend on your specific project, occupancy and municipality, and code editions change. Always verify requirements against the current Ontario Building Code and confirm with your local building department.