WG-8 Duties: perform the full range of sub-journeyman maintenance worker tasks including carpentry tasks (replace damaged pieces of framework or flooring, build shelves and storage cabinets, select lumber and measure needed materials from stock, etc.); roofing tasks (repair leaks in shingled roofs, tear off and replace asphalt composition and cedar shingles, install underlayment, cut and install sheathing, cut and replace rafters, install pre-made flashing); plumbing tasks (replace various valves, unions, elbows, fixtures, toilets, faucets and various types of pipe and copper lines, cut and thread pipes, winterize water systems, etc.); painting (prepare surfaces for painting by sanding, buffing and cleaning); electrical (troubleshoot and repair single to three phase electricity add a phase coverts with transforms, rectifiers, capacitors, relays, contacts, starts, etc., installs thin wall, rigid, flex, below-ground and surface mounted conduits). WG-7 Duties: Perform carpentry repairs to buildings and quarters such as constructs, installs, repairs and replaces items such as doors, shelves, supply racks, hardware, frame structures, windows, trim and cabinets; replaces defective siding, steps, windowsills and thresholds; replaces glass panes and damaged portions of concrete or wooden walks and/or steps.