Custodians are responsible for cleaning a variety of the spaces, which include classrooms, restrooms, offices, lounges, board rooms, kitchens, cafeterias, restaurants, auditoriums, lecture halls, banquet rooms, outside entrances to buildings, hallways and foyers, gymnasiums, locker rooms, weight rooms, science labs, computer labs, libraries, reading rooms, work rooms, communications center, art galleries, staircases, child care areas, and other public areas. Duties common to custodial work require physical strength, agility, and endurance to walk/stand for prolonged periods of time, bend/reach, lift, pull or push objects weighing up to 50 pounds and more than 50 pounds with assistance, climb ladders, and operate heavy custodial equipment.