man-made structure various sizes and shapes metal, wood, or concrete structure a variety of mechanical, electrical, and water lines often located underground a control box or other equipment nearby signs or labels indicating what the utility is for
utility which has man-made structure utility which has various sizes and shapes utility which has metal, wood, or concrete structure utility which is a variety of mechanical, electrical, and water lines utility which often located underground utility which is a control box or other equipment nearby utility which has signs or labels indicating what the utility is for