Tight-fitting facepiece means a respiratory inlet covering that forms a complete seal with the face.
Pneumatic tire means every tire in which compressed air is designed to support the load.
Accessory dwelling unit means an attached or a detached residential dwelling unit which provides complete independent living facilities for one or more persons. It shall include permanent provisions for living, sleeping, eating, cooking, and sanitation on the same parcel as the single-family dwelling is situated. An accessory dwelling unit also includes the following:
Permanent radiographic installation means an enclosed shielded room, cell, or vault, not located at a temporary jobsite, in which radiography is performed.
Healing arts screening means the testing of human beings using x-ray machines for the detection or evaluation of health indications when such tests are not specifically and individually ordered by a licensed practitioner of the healing arts legally authorized to prescribe such x-ray tests for the purpose of diagnosis or treatment.
Heavy equipment means such construction machinery as backhoes, treaded tractors, dump trucks, and front-end loaders.