Performance of essential and ancillary functions requires maintenance of physical conditioning adequate for sitting, walking or standing, lifting, pushing, pulling, twisting, throwing, reaching, squatting, stretching, bending for prolonged periods of time; at time lift and carry up to as much as 60 pounds, near visual acuity to review written documentation; ability to hear and understand speech with background noise. In performing the required work, it is required to have the ability to climb ladders and scaffolding, do a lot of walking, use every kind of hand tool, work in hazardous positions, and carry heavy tools.