In terms of the physical strength to perform the essential duties, this classification is considered to be very heavy work (exerting in excess of 100 pounds of force occasionally, in excess of 50 pounds of force frequently, and in excess of 20 pounds force constantly to move objects), but may differ based on area of focus. The essential duties of this classification may require the ability to regularly balance, stoop, kneel, crouch, reach, stand, walk, push, pull, lift, grasp, feel, talk, hear, see, use repetitive motions, work with one's fingers, and climb.