General Provisions, Referenced Standards, and Permit/Inspection Requirements
General provisions explain how the OBC is applied. Division A contains the objectives and functional statements used to judge alternative solutions; Division B contains acceptable solutions; Division C contains administrative rules. Referenced standards are not optional background: once a standard is referenced, the edition named in the Code is part of the acceptable solution. A newer edition of CSA B149.1, CSA F280, or CSA F326 does not automatically apply until the Code references it. If a specific Code sentence conflicts with a general referenced standard, follow the specific Code requirement and confirm with the authority having jurisdiction.
Permits and inspections are administrative traps. A permit application normally needs drawings, specifications, fees, and enough information to show compliance. Work must not start before the permit is issued unless the work is exempt. The inspector must be notified at required stages, and concealed HVAC work-ducts, vents, combustion-air openings, clearances-must be inspected before it is covered. Changes from the approved plans require a revision, not a verbal field change.
Worked example: a plan shows a direct-vent furnace but the installer substitutes a conventional furnace with a chimney. This changes venting, combustion air, and clearances, so it is a material change requiring revised drawings and review. A useful rule of thumb is: if the change affects a Code-referenced standard, a clearance, or a life-safety feature, treat it as a permit revision.
Key exam traps: quoting a standard edition not referenced by the Code; confusing the CBO with the designer; assuming an inspection is automatic; and forgetting that manufacturer's instructions are also part of the installation requirements.