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All habitable rooms (i.e. rooms for living, sleeping, eating or cooking) shall be provided with natural light by means of exterior glazed openings with an area not less than 1/10 of the floor area of such rooms with a minimum of 10 square feet.
Basic Requirements. Although a single rule or group of rules is unlikely to cover all of the. ventilation requirements applicable to confined spaces, the objectives of ventilation in confined. spaces are the following: 1) To remove contaminated air (flammable or toxic) from the space and maintain safe.