This work also involves the physical abilities of balancing, climbing, crawling, crouching, grasping, perceiving sounds at normal speaking levels, kneeling, lifting, pulling, pushing, reaching, performing repetitive motion, standing, stooping, expressing ideas by the spoken word, and walking. PHYSICAL DEMANDS: Must be able to perform very heavy work exerting up to 20 pounds of force to lift, carry, push, pull, or otherwise move objects; frequently requiring 50 pounds of force to move objects; and occasionally requiring to exert up to 100 pounds of force to move objects.