In Canada, it is the provinces and territories that have authority to enact laws and regulations pertaining to buildings and facilities. Provincial and territorial governments modify, interpret and enforce the codes, and most of them adopt or adapt Codes Canada publications to suit their needs. Typically, they delegate responsibility for enforcement to the building, plumbing and fire officials employed by your local municipality.
If you seek a technical opinion on the intent of a requirement in adopted codes, you should approach the appropriate municipal, provincial or territorial official.