ABILITY TO: Perform work that requires some physical agility and endurance, including standing and walking up to six hours; Sitting, bending over, reaching overhead, crouching, kneeling, and balancing up to four hours; and other abilities as specified in the State of California Division of Industrial Accidents form RB-91 for this classification. Under supervision, performs a variety of semi-skilled manual tasks in the maintenance, alteration, and repair of buildings, structures, utility facilities, and appliances; and performs related work as required.