Which of the following is not outlined by the National Building Code of Canada?

The National Building Code of Canada primarily focuses on the structural integrity and safety of buildings. It includes guidelines regarding the design and construction of heating and ventilation systems, materials that can be used in construction, and minimum fire safety regulations that must be adhered to for building safety.

Cleanliness of commercial kitchens, while important for public health and safety, falls under health regulations rather than building codes. Such regulations are typically governed by separate municipal or provincial health codes that address food safety and sanitation standards. This distinction highlights why the cleanliness of commercial kitchens is not included in the National Building Code.