This position also requires work at extreme heights, in areas that are under construction, or in restricted areas such as a switchgear room, manhole, utility tunnel, crawl space, or attic, in confined spaces, and on slippery or uneven surfaces; works on ladders, scaffolds, aerial lifts, catwalks, in ditches and excavations; works in and around single and multi-story buildings with all exposures typical of a heavy construction site, including portable sanitary facilities. Specific vision abilities required by this job include close vision, distance vision, color vision to discern color coded wires, peripheral vision, depth perception and ability to adjust focus.