Help brick, block and stone masons, or tile and marble setters by performing duties requiring less skill. Their duties include using, supplying or holding materials or tools, and cleaning work area and equipment.

Assemble, install, or maintain solar photovoltaic (pv) systems on roofs or other structures in compliance with site assessment and schematics. They include measuring, cutting, assembling, and bolting structural framing and solar modules. They perform minor electrical work such as current checks.

Raise, place, and unite iron or steel girders, columns, and other structural members to form completed structures or structural frameworks. They erect metal storage tanks and assemble prefabricated metal buildings.

Fabricate, assemble, install, and repair sheet metal products and equipment, such as ducts, control boxes, drainpipes, and furnace casings. They set up and operate fabricating machines to cut, bend, and straighten sheet metal. They use hammers to shape metal over anvils or blocks. They operate welding equipment to join, fix and smooth burred surfaces.

Cover roofs of structures with shingles, slate, asphalt, aluminum, wood, or related materials. They spray roofs, sidings, and walls with material to bind, seal, insulate, or soundproof sections of structures.

Position and secure steel bars or mesh in concrete forms in order to reinforce concrete. They use a variety of fasteners, rod bending machines, blowtorches, and hand tools. Includes rod busters.

Apply interior or exterior plaster, cement, stucco, or similar materials. They also set ornamental plaster.

Assemble, install, or repair pipes, fittings, or fixers for heating, water, or drainage systems, according to specifications or plumbing codes.

Lay out, assemble, install, or maintain pipe systems, pipe supports, or related hydraulic or pneumatic equipment for steam, hot water, heating, cooling, lubricating, sprinkling, or industrial production or processing systems.

Lay pipe for storm or sanitation sewers, drains, and water mains. They perform any combination of the following tasks: grade trenches or culverts, position pipe, or seal joints.