Ability to perform physically active work of a medium-heavy nature, requiring frequent walking, climbing, pushing, pulling, stooping, kneeling and crouching activity to perform routine cleaning functions; and frequent lifting requiring the exertion of up to 50 pounds of force to lift a mop bucket, vacuum, ladder, or other supplies and equipment, is necessary. Clean and maintain floor surfaces and stairways by sweeping, mop-ping, stripping, sealing, refinishing, and polishing, using hand and/or mechanical cleaning, scrubbing and buffing equipment.