Final answer:
Building codes prohibit doors that connect a private garage directly into rooms used for sleeping for safety reasons, usually requiring fire-rated doors with special features.
Step-by-step explanation:
When openings from a private garage directly into a room are considered, building codes generally have strict regulations to prevent the passage of harmful fumes or potential fires into living spaces. A door that connects a private garage to a room used for sleeping is not permitted for safety reasons. These regulations are in place to provide a protective barrier and usually require the use of fire-rated doors that do not open into bedrooms or other rooms used for sleeping. Fire resistance, self-closing mechanisms, and sealing gaps are all safety features often required for doors between garages and living spaces. Ventilation systems must also ensure that no harmful exhaust gases infiltrate the living areas,