Additionally, the following physical abilities are required: balancing, climbing, crawling, crouching, feeling, fingering, handling, hearing, kneeling, lifting, mental acuity, pulling, pushing, reaching, repetitive motions, speaking, standing, stooping, visual acuity, and walking. Ability to install, maintain, repair, and replace water supply, sanitary waste, vent, fixture, and related plumbing systems according to plans, codes, and specifications.