- Fasten roof panel edges or machine-made moldings to structures by nailing or welding.
Occupations with related tasks Save Table: XLSX CSV
- Cement or nail flashing strips of metal or shingle over joints to make them watertight.
- Install partially overlapping layers of material over roof insulation surfaces, using chalk lines, gauges on shingling hatchets, or lines on shingles.
- Apply plastic coatings, membranes, fiberglass, or felt over sloped roofs before applying shingles.
- Install, repair, or replace single-ply roofing systems, using waterproof sheet materials such as modified plastics, elastomeric, or other asphaltic compositions.
- Attach roofing paper to roofs in overlapping strips to form bases for other materials.
- Cover roofs or exterior walls of structures with slate, asphalt, aluminum, wood, gravel, gypsum, or related materials, using brushes, knives, punches, hammers, or other tools.
- Apply reflective roof coatings, such as special paints or single-ply roofing sheets, to existing roofs to reduce solar heat absorption.
- Apply alternate layers of hot asphalt or tar and roofing paper to roofs.
- Apply gravel or pebbles over top layers of roofs, using rakes or stiff-bristled brooms.
- Set up scaffolding to provide safe access to roofs.
- Install vapor barriers or layers of insulation on flat roofs.
- Install attic ventilation systems, such as turbine vents, gable or ridge vents, or conventional or solar-powered exhaust fans.
- Install skylights on roofs to increase natural light inside structures or to reduce energy costs.
- Apply modular soil- and plant-containing grids over existing roof membranes to create green roofs.
- Install layers of vegetation-based green roofs, including protective membranes, drainage, aeration, water retention and filter layers, soil substrates, irrigation materials, and plants.
- Inspect problem roofs to determine the best repair procedures.
- Remove snow, water, or debris from roofs prior to applying roofing materials.
- Estimate materials and labor required to complete roofing jobs.
- Cut felt, shingles, or strips of flashing to fit angles formed by walls, vents, or intersecting roof surfaces.
- Waterproof or damp-proof walls, floors, roofs, foundations, or basements by painting or spraying surfaces with waterproof coatings or by attaching waterproofing membranes to surfaces.
- Cover exposed nailheads with roofing cement or caulking to prevent water leakage or rust.
- Smooth rough spots to prepare surfaces for waterproofing, using hammers, chisels, or rubbing bricks.
- Glaze top layers to make a smooth finish or embed gravel in the bitumen for rough surfaces.
- Mop or pour hot asphalt or tar onto roof bases.
- Install solar roofing systems that have energy-collecting photovoltaic panels built into roofing membranes, shingles, or tiles.
- Spray roofs, sidings, or walls to bind, seal, insulate, or soundproof sections of structures, using spray guns, air compressors, or heaters.
- Attach solar panels to existing roofs, according to specifications and without damaging roofing materials or the structural integrity of buildings.
- Punch holes in slate, tile, terra cotta, or wooden shingles, using punches and hammers.
- Cement or nail flashing strips of metal or shingle over joints to make them watertight.
- Install partially overlapping layers of material over roof insulation surfaces, using chalk lines, gauges on shingling hatchets, or lines on shingles.
- Apply plastic coatings, membranes, fiberglass, or felt over sloped roofs before applying shingles.
- Install, repair, or replace single-ply roofing systems, using waterproof sheet materials such as modified plastics, elastomeric, or other asphaltic compositions.
- Attach roofing paper to roofs in overlapping strips to form bases for other materials.
- Cover roofs or exterior walls of structures with slate, asphalt, aluminum, wood, gravel, gypsum, or related materials, using brushes, knives, punches, hammers, or other tools.
- Apply reflective roof coatings, such as special paints or single-ply roofing sheets, to existing roofs to reduce solar heat absorption.
- Apply alternate layers of hot asphalt or tar and roofing paper to roofs.
- Apply gravel or pebbles over top layers of roofs, using rakes or stiff-bristled brooms.
- Set up scaffolding to provide safe access to roofs.
- Install vapor barriers or layers of insulation on flat roofs.
- Install attic ventilation systems, such as turbine vents, gable or ridge vents, or conventional or solar-powered exhaust fans.
- Install skylights on roofs to increase natural light inside structures or to reduce energy costs.
- Apply modular soil- and plant-containing grids over existing roof membranes to create green roofs.
- Install layers of vegetation-based green roofs, including protective membranes, drainage, aeration, water retention and filter layers, soil substrates, irrigation materials, and plants.
- Cover roofs with layers of roofing felt or asphalt strips before installing tile, slate, or composition materials.
- Place tiles, nail them to roof boards, and cover nailheads with roofing cement.
- Attach roofing paper and composition shingles, using nails.
- Perform emergency leak repairs and general maintenance for a variety of roof types.
- Attach sheets of metal to roof boards or building frameworks when installing metal roofs.
- Apply shingles, gravel, or asphalt over the top layer of tar to protect the roofing material.
- Set ladders, scaffolds, and hoists in place for taking supplies to roofs.
- Check to ensure that completed roofs are watertight.
- Sweep and clean roofs to prepare them for the application of new roofing materials.
- Locate worn or torn areas in roofs.
- Clean work areas and equipment.
- Maintain tools and equipment.
- Remove old roofing materials.
- Unload materials and tools from work trucks, and unroll roofing as directed.
- Provide assistance to skilled roofers installing and repairing roofs, flashings, and surfaces.
- Hoist tar and roofing materials to roofs, using ropes and pulleys, or carry materials up ladders.
- Chop tar into small pieces, and heat chopped tar in kettles.
- Clear drains and downspouts and clean gutters.
- Cover roofs with layers of roofing felt or asphalt strips before installing tile, slate, or composition materials.
- Place tiles, nail them to roof boards, and cover nailheads with roofing cement.
- Attach roofing paper and composition shingles, using nails.
- Perform emergency leak repairs and general maintenance for a variety of roof types.
- Attach sheets of metal to roof boards or building frameworks when installing metal roofs.
- Apply shingles, gravel, or asphalt over the top layer of tar to protect the roofing material.
- Set ladders, scaffolds, and hoists in place for taking supplies to roofs.
- Assemble pipe sections, tubing, or fittings, using couplings, clamps, screws, bolts, cement, plastic solvent, caulking, or soldering, brazing, or welding equipment.
- Attach pipes to walls, structures, or fixtures, such as radiators or tanks, using brackets, clamps, tools, or welding equipment.
- Weld small pipes or special piping, using specialized techniques, equipment, or materials, such as computer-assisted welding or microchip fabrication.
- Shut off steam, water, or other gases or liquids from pipe sections, using valve keys or wrenches.
- Install underground storm, sanitary, or water piping systems, extending piping as needed to connect fixtures and plumbing.
- Locate and mark the position of pipe installations, connections, passage holes, or fixtures in structures, using measuring instruments such as rulers or levels.
- Cut, thread, or hammer pipes to specifications, using tools such as saws, cutting torches, pipe threaders, or pipe benders.
- Lay out full scale drawings of pipe systems, supports, or related equipment, according to blueprints.
- Plan pipe system layout, installation, or repair, according to specifications.
- Review blueprints, building codes, or specifications to determine work details or procedures.
- Select pipe sizes, types, or related materials, such as supports, hangers, or hydraulic cylinders, according to specifications.
- Fill pipes or plumbing fixtures with water or air and observe pressure gauges to detect and locate leaks.
- Direct helpers engaged in pipe cutting, preassembly, or installation of plumbing systems or components.
- Inspect, examine, or test installed systems or pipe lines, using pressure gauge, hydrostatic testing, observation, or other methods.
- Install pipe assemblies, fittings, valves, appliances such as dishwashers or water heaters, or fixtures such as sinks or toilets, using hand or power tools.
- Anchor steel supports from ceiling joists to hold pipes in place.
- Modify, clean, or maintain pipe systems, units, fittings, or related machines or equipment, using hand or power tools.
- Install automatic controls to regulate pipe systems.
- Estimate time, material, or labor costs for use in project plans.
- Keep records of work assignments.
- Inspect structures to assess material or equipment needs, to establish the sequence of pipe installations, or to plan installation around obstructions, such as electrical wiring.
- Maintain or repair plumbing by replacing defective washers, replacing or mending broken pipes, or opening clogged drains.
- Repair or remove and replace system components.
- Cut openings in structures to accommodate pipes or pipe fittings, using hand or power tools.
- Install green plumbing equipment, such as faucet flow restrictors, dual-flush or pressure-assisted flush toilets, or tankless hot water heaters.
- Inspect work sites for obstructions or holes that could cause structural weakness.
- Install pipe systems to support alternative energy-fueled systems, such as geothermal heating or cooling systems.
- Install fixtures, appliances, or equipment designed to reduce water or energy consumption.
- Repair hydraulic or air pumps.
- Operate motorized pumps to remove water from flooded manholes, basements, or facility floors.
- Assemble pipe sections, tubing, or fittings, using couplings, clamps, screws, bolts, cement, plastic solvent, caulking, or soldering, brazing, or welding equipment.
- Attach pipes to walls, structures, or fixtures, such as radiators or tanks, using brackets, clamps, tools, or welding equipment.
- Weld small pipes or special piping, using specialized techniques, equipment, or materials, such as computer-assisted welding or microchip fabrication.
- Bolt or arc weld pressure vessel structures and parts together, using wrenches or welding equipment.
- Bell, bead with power hammers, or weld pressure vessel tube ends to ensure leakproof joints.
- Position, align, and secure structural parts or related assemblies to boiler frames, tanks, or vats of pressure vessels, following blueprints.
- Install refractory bricks or other heat-resistant materials in fireboxes of pressure vessels.
- Attach rigging and signal crane or hoist operators to lift heavy frame and plate sections or other parts into place.
- Study blueprints to determine locations, relationships, or dimensions of parts.
- Repair or replace defective pressure vessel parts, such as safety valves or regulators, using torches, jacks, caulking hammers, power saws, threading dies, welding equipment, or metalworking machinery.
- Locate and mark reference points for columns or plates on boiler foundations, following blueprints and using straightedges, squares, transits, or measuring instruments.
- Install manholes, handholes, taps, tubes, valves, gauges, or feedwater connections in drums of water tube boilers, using hand tools.
- Shape or fabricate parts, such as stacks, uptakes, or chutes, to adapt pressure vessels, heat exchangers, or piping to premises, using heavy-metalworking machines such as brakes, rolls, or drill presses.
- Assemble large vessels in an on-site fabrication shop prior to installation to ensure proper fit.
- Lay out plate, sheet steel, or other heavy metal and locate and mark bending and cutting lines, using protractors, compasses, and drawing instruments or templates.
- Examine boilers, pressure vessels, tanks, or vats to locate defects, such as leaks, weak spots, or defective sections, so that they can be repaired.
- Shape seams, joints, or irregular edges of pressure vessel sections or structural parts to attain specified fit of parts, using cutting torches, hammers, files, or metalworking machines.
- Inspect assembled vessels or individual components, such as tubes, fittings, valves, controls, or auxiliary mechanisms, to locate any defects.
- Straighten or reshape bent pressure vessel plates or structure parts, using hammers, jacks, or torches.
- Clean pressure vessel equipment, using scrapers, wire brushes, and cleaning solvents.
- Bolt or arc weld pressure vessel structures and parts together, using wrenches or welding equipment.
- Bell, bead with power hammers, or weld pressure vessel tube ends to ensure leakproof joints.
- Position, align, and secure structural parts or related assemblies to boiler frames, tanks, or vats of pressure vessels, following blueprints.
- Install refractory bricks or other heat-resistant materials in fireboxes of pressure vessels.
- Weld metal parts together, using portable gas welding equipment.
- Attach rails or tension wire along bottoms of posts to form fencing frames.
- Attach fence rail supports to posts, using hammers and pliers.
- Assemble gates, and fasten gates into position, using hand tools.
- Nail top and bottom rails to fence posts, or insert them in slots on posts.
- Stretch wire, wire mesh, or chain link fencing between posts, and attach fencing to frames.
- Complete top fence rails of metal fences by connecting tube sections, using metal sleeves.
- Erect alternate panel, basket weave, and louvered fences.
- Insert metal tubing through rail supports.
- Nail pointed slats to rails to construct picket fences.
- Construct and repair barriers, retaining walls, trellises, and other types of fences, walls, and gates.
- Establish the location for a fence, and gather information needed to ensure that there are no electric cables or water lines in the area.
- Set metal or wooden posts in upright positions in postholes.
- Measure and lay out fence lines and mark posthole positions, following instructions, drawings, or specifications.
- Align posts, by lines or sighting, and verify vertical alignment of posts, using plumb bobs or spirit levels.
- Dig postholes, using spades, posthole diggers, or power-driven augers.
- Mix and pour concrete around bases of posts, or tamp soil into postholes to embed posts.
- Make rails for fences, by sawing lumber or by cutting metal tubing to required lengths.
- Discuss fencing needs with customers, and estimate and quote prices.
- Blast rock formations and rocky areas with dynamite to facilitate posthole digging.
- Weld metal parts together, using portable gas welding equipment.
- Attach rails or tension wire along bottoms of posts to form fencing frames.
- Attach fence rail supports to posts, using hammers and pliers.
- Assemble gates, and fasten gates into position, using hand tools.
- Nail top and bottom rails to fence posts, or insert them in slots on posts.
- Stretch wire, wire mesh, or chain link fencing between posts, and attach fencing to frames.
- Complete top fence rails of metal fences by connecting tube sections, using metal sleeves.
- Erect alternate panel, basket weave, and louvered fences.
- Insert metal tubing through rail supports.
- Nail pointed slats to rails to construct picket fences.
- Construct and repair barriers, retaining walls, trellises, and other types of fences, walls, and gates.
- Perform minor plumbing, welding, or concrete mixing work.
- Assemble and fasten materials to make frameworks or props, using hand tools and wood screws, nails, dowel pins, or glue.
- Erect scaffolding or ladders for assembling structures above ground level.
- Install structures or fixtures, such as windows, frames, floorings, trim, or hardware, using carpenters' hand or power tools.
- Install rough door and window frames, subflooring, fixtures, or temporary supports in structures undergoing construction or repair.
- Cover subfloors with building paper to keep out moisture and lay hardwood, parquet, or wood-strip-block floors by nailing floors to subfloor or cementing them to mastic or asphalt base.
- Construct forms or chutes for pouring concrete.
- Build or repair cabinets, doors, frameworks, floors, or other wooden fixtures used in buildings, using woodworking machines, carpenter's hand tools, or power tools.
- Apply shock-absorbing, sound-deadening, or decorative paneling to ceilings or walls.
- Examine structural timbers and supports to detect decay, and replace timbers as required, using hand tools, nuts, and bolts.
- Follow established safety rules and regulations and maintain a safe and clean environment.
- Measure and mark cutting lines on materials, using a ruler, pencil, chalk, and marking gauge.
- Study specifications in blueprints, sketches, or building plans to prepare project layout and determine dimensions and materials required.
- Shape or cut materials to specified measurements, using hand tools, machines, or power saws.
- Verify trueness of structure, using plumb bob and level.
- Inspect ceiling or floor tile, wall coverings, siding, glass, or woodwork to detect broken or damaged structures.
- Maintain records, document actions, and present written progress reports.
- Remove damaged or defective parts or sections of structures and repair or replace, using hand tools.
- Maintain job records and schedule work crew.
- Anchor and brace forms and other structures in place, using nails, bolts, anchor rods, steel cables, planks, wedges, and timbers.
- Bore boltholes in timber, masonry or concrete walls, using power drill.
- Dig or direct digging of post holes and set poles to support structures.
- Arrange for subcontractors to deal with special areas, such as heating or electrical wiring work.
- Finish surfaces of woodwork or wallboard in houses or buildings, using paint, hand tools, or paneling.
- Select and order lumber or other required materials.
- Work with or remove hazardous material.
- Fill cracks or other defects in plaster or plasterboard and sand patch, using patching plaster, trowel, and sanding tool.
- Prepare cost estimates for clients or employers.
- Build sleds from logs and timbers for use in hauling camp buildings and machinery through wooded areas.
- Perform minor plumbing, welding, or concrete mixing work.
- Assemble and fasten materials to make frameworks or props, using hand tools and wood screws, nails, dowel pins, or glue.
- Erect scaffolding or ladders for assembling structures above ground level.
- Install structures or fixtures, such as windows, frames, floorings, trim, or hardware, using carpenters' hand or power tools.
- Install rough door and window frames, subflooring, fixtures, or temporary supports in structures undergoing construction or repair.
- Cover subfloors with building paper to keep out moisture and lay hardwood, parquet, or wood-strip-block floors by nailing floors to subfloor or cementing them to mastic or asphalt base.
- Construct forms or chutes for pouring concrete.
- Build or repair cabinets, doors, frameworks, floors, or other wooden fixtures used in buildings, using woodworking machines, carpenter's hand tools, or power tools.
- Apply shock-absorbing, sound-deadening, or decorative paneling to ceilings or walls.
- Examine structural timbers and supports to detect decay, and replace timbers as required, using hand tools, nuts, and bolts.
- Cut, bend, or weld steel pieces, using metal shears, torches, or welding equipment.
- Connect columns, beams, and girders with bolts, following blueprints and instructions from supervisors.
- Bolt aligned structural steel members in position for permanent riveting, bolting, or welding into place.
- Erect metal or precast concrete components for structures, such as buildings, bridges, dams, towers, storage tanks, fences, or highway guard rails.
- Force structural steel members into final positions, using turnbuckles, crowbars, jacks, or hand tools.
- Drive drift pins through rivet holes to align rivet holes in structural steel members with corresponding holes in previously placed members.
- Assemble hoisting equipment or rigging, such as cables, pulleys, or hooks, to move heavy equipment or materials.
- Insert sealing strips, wiring, insulating material, ladders, flanges, gauges, or valves, depending on types of structures being assembled.
- Catch hot rivets in buckets and insert rivets in holes, using tongs.
- Read specifications or blueprints to determine the locations, quantities, or sizes of materials required.
- Fasten structural steel members to hoist cables, using chains, cables, or rope.
- Hoist steel beams, girders, or columns into place, using cranes or signaling hoisting equipment operators to lift and position structural steel members.
- Verify vertical and horizontal alignment of structural steel members, using plumb bobs, laser equipment, transits, or levels.
- Pull, push, or pry structural steel members into approximate positions for bolting into place.
- Unload and position prefabricated steel units for hoisting, as needed.
- Fabricate metal parts, such as steel frames, columns, beams, or girders, according to blueprints or instructions from supervisors.
- Dismantle structures or equipment.
- Ride on girders or other structural steel members to position them, or use rope to guide them into position.
- Hold rivets while riveters use air hammers to form heads on rivets.
- Place blocks under reinforcing bars used to reinforce floors.
- Cut, bend, or weld steel pieces, using metal shears, torches, or welding equipment.
- Connect columns, beams, and girders with bolts, following blueprints and instructions from supervisors.
- Bolt aligned structural steel members in position for permanent riveting, bolting, or welding into place.
- Erect metal or precast concrete components for structures, such as buildings, bridges, dams, towers, storage tanks, fences, or highway guard rails.
- Force structural steel members into final positions, using turnbuckles, crowbars, jacks, or hand tools.
- Drive drift pins through rivet holes to align rivet holes in structural steel members with corresponding holes in previously placed members.
- Assemble hoisting equipment or rigging, such as cables, pulleys, or hooks, to move heavy equipment or materials.
- Insert sealing strips, wiring, insulating material, ladders, flanges, gauges, or valves, depending on types of structures being assembled.
- Catch hot rivets in buckets and insert rivets in holes, using tongs.
- Spread roofing paper on surface of foundation, and spread concrete onto roofing paper with trowel to form terrazzo base.
- Install anchor bolts, steel plates, door sills and other fixtures in freshly poured concrete or pattern or stamp the surface to provide a decorative finish.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth, using trowel.
- Fabricate concrete beams, columns, and panels.
- Check the forms that hold the concrete to see that they are properly constructed.
- Set the forms that hold concrete to the desired pitch and depth, and align them.
- Spread, level, and smooth concrete, using rake, shovel, hand or power trowel, hand or power screed, and float.
- Monitor how the wind, heat, or cold affect the curing of the concrete throughout the entire process.
- Mold expansion joints and edges, using edging tools, jointers, and straightedge.
- Signal truck driver to position truck to facilitate pouring concrete, and move chute to direct concrete on forms.
- Direct the casting of the concrete and supervise laborers who use shovels or special tools to spread it.
- Produce rough concrete surface, using broom.
- Apply hardening and sealing compounds to cure surface of concrete, and waterproof or restore surface.
- Operate power vibrator to compact concrete.
- Waterproof or restore concrete surfaces, using appropriate compounds.
- Mix cement, sand, and water to produce concrete, grout, or slurry, using hoe, trowel, tamper, scraper, or concrete-mixing machine.
- Chip, scrape, and grind high spots, ridges, and rough projections to finish concrete, using pneumatic chisels, power grinders, or hand tools.
- Cut out damaged areas, drill holes for reinforcing rods, and position reinforcing rods to repair concrete, using power saw and drill.
- Wet concrete surface, and rub with stone to smooth surface and obtain specified finish.
- Clean chipped area, using wire brush, and feel and observe surface to determine if it is rough or uneven.
- Build wooden molds, and clamp molds around area to be repaired, using hand tools.
- Sprinkle colored marble or stone chips, powdered steel, or coloring powder over surface to produce prescribed finish.
- Polish surface, using polishing or surfacing machine.
- Cut metal division strips, and press them into terrazzo base so that top edges form desired design or pattern.
- Push roller over surface to embed chips in surface.
- Apply muriatic acid to clean surface, and rinse with water.
- Spread roofing paper on surface of foundation, and spread concrete onto roofing paper with trowel to form terrazzo base.
- Install anchor bolts, steel plates, door sills and other fixtures in freshly poured concrete or pattern or stamp the surface to provide a decorative finish.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth, using trowel.
- Fabricate concrete beams, columns, and panels.
- Bend steel rods with hand tools or rod-bending machines and weld them with arc-welding equipment.
- Space and fasten together rods in forms according to blueprints, using wire and pliers.
- Position and secure steel bars, rods, cables, or mesh in concrete forms, using fasteners, rod-bending machines, blowtorches, or hand tools.
- Determine quantities, sizes, shapes, and locations of reinforcing rods from blueprints, sketches, or oral instructions.
- Cut rods to required lengths, using metal shears, hacksaws, bar cutters, or acetylene torches.
- Place blocks under rebar to hold the bars off the deck when reinforcing floors.
- Cut and fit wire mesh or fabric, using hooked rods, and position fabric or mesh in concrete to reinforce concrete.
- Bend steel rods with hand tools or rod-bending machines and weld them with arc-welding equipment.
- Space and fasten together rods in forms according to blueprints, using wire and pliers.
- Position and secure steel bars, rods, cables, or mesh in concrete forms, using fasteners, rod-bending machines, blowtorches, or hand tools.
- Bolt or weld steel rails to the walls of shafts to guide elevators, working from scaffolding or platforms.
- Install outer doors and door frames at elevator entrances on each floor of a structure.
- Inspect wiring connections, control panel hookups, door installations, and alignments and clearances of cars and hoistways to ensure that equipment will operate properly.
- Assemble, install, repair, and maintain elevators, escalators, moving sidewalks, and dumbwaiters, using hand and power tools, and testing devices such as test lamps, ammeters, and voltmeters.
- Disassemble defective units, and repair or replace parts such as locks, gears, cables, and electric wiring.
- Check that safety regulations and building codes are met, and complete service reports verifying conformance to standards.
- Locate malfunctions in brakes, motors, switches, and signal and control systems, using test equipment.
- Adjust safety controls, counterweights, door mechanisms, and components such as valves, ratchets, seals, and brake linings.
- Read and interpret blueprints to determine the layout of system components, frameworks, and foundations, and to select installation equipment.
- Connect car frames to counterweights, using steel cables.
- Maintain log books that detail all repairs and checks performed.
- Connect electrical wiring to control panels and electric motors.
- Test newly installed equipment to ensure that it meets specifications, such as stopping at floors for set amounts of time.
- Participate in additional training to keep skills up to date.
- Operate elevators to determine power demands, and test power consumption to detect overload factors.
- Install electrical wires and controls by attaching conduit along shaft walls from floor to floor and pulling plastic-covered wires through the conduit.
- Attach guide shoes and rollers to minimize the lateral motion of cars as they travel through shafts.
- Assemble elevator cars, installing each car's platform, walls, and doors.
- Assemble electrically powered stairs, steel frameworks, and tracks, and install associated motors and electrical wiring.
- Cut prefabricated sections of framework, rails, and other components to specified dimensions.
- Bolt or weld steel rails to the walls of shafts to guide elevators, working from scaffolding or platforms.
- Install outer doors and door frames at elevator entrances on each floor of a structure.
- Operate cutting torches and welding equipment, while working with conduit and metal components to construct devices associated with electrical functions.
- Erect electrical system components and barricades, and rig scaffolds, hoists, and shoring.
- Strip insulation from wire ends, using wire stripping pliers, and attach wires to terminals for subsequent soldering.
- Trace out short circuits in wiring, using test meter.
- Measure, cut, and bend wire and conduit, using measuring instruments and hand tools.
- Examine electrical units for loose connections and broken insulation and tighten connections, using hand tools.
- Maintain tools, vehicles, and equipment and keep parts and supplies in order.
- Drill holes and pull or push wiring through openings, using hand and power tools.
- Clean work area and wash parts.
- Perform semi-skilled and unskilled laboring duties related to the installation, maintenance and repair of a wide variety of electrical systems and equipment.
- Thread conduit ends, connect couplings, and fabricate and secure conduit support brackets, using hand tools.
- Disassemble defective electrical equipment, replace defective or worn parts, and reassemble equipment, using hand tools.
- Construct controllers and panels, using power drills, drill presses, taps, saws, and punches.
- Transport tools, materials, equipment, and supplies to work site by hand, handtruck, or heavy, motorized truck.
- String transmission lines or cables through ducts or conduits, under the ground, through equipment, or to towers.
- Install copper-clad ground rods, using a manual post driver.
- Dig trenches or holes for installation of conduit or supports.
- Raise, lower, or position equipment, tools, and materials, using hoist, hand line, or block and tackle.
- Bolt component parts together to form tower assemblies, using hand tools.
- Trim trees and clear undergrowth along right-of-way.
- Requisition materials, using warehouse requisition or release forms.
- Solder electrical connections, using soldering iron.
- Paint a variety of objects related to electrical functions.
- Break up concrete, using airhammer, to facilitate installation, construction, or repair of equipment.
- Operate heavy equipment, such as backhoes.
- Operate cutting torches and welding equipment, while working with conduit and metal components to construct devices associated with electrical functions.
- Erect electrical system components and barricades, and rig scaffolds, hoists, and shoring.
- Spread roofing paper on surface of foundation and spread concrete onto roofing paper with trowel to form terrazzo base.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth with a trowel.
- Measure designated amounts of ingredients for terrazzo or grout, according to standard formulas and specifications, using graduated containers and scales, and load ingredients into portable mixer.
- Grind surfaces with a power grinder, or polish surfaces with polishing or surfacing machines.
- Cut metal division strips and press them into the terrazzo base for joints or changes of color to form designs or patterns or to help prevent cracks.
- Blend marble chip mixtures, place into panels, and push a roller over the surface to embed the chips.
- Modify mixing, grouting, grinding, or cleaning procedures, according to type of installation or material used.
- Spread, level, or smooth concrete or terrazzo mixtures to form bases or finished surfaces, using rakes, shovels, hand or power trowels, hand or power screeds, or floats.
- Grind curved surfaces or areas inaccessible to surfacing machine, such as stairways or cabinet tops, with portable hand grinder.
- Wash polished terrazzo surface, using cleaner and water, and apply sealer and curing agent according to manufacturer's specifications, using brush or sprayer.
- Position and secure moisture membrane and wire mesh in preparation for pouring base materials for terrazzo installation.
- Fill slight grinding depressions with matching grout material and hand-trowel for a smooth, uniform surface.
- Clean installation site, mixing and storage areas, tools, machines, and equipment, and store materials and equipment.
- Sprinkle colored marble or stone chips, powdered steel, or coloring powder over surface to produce prescribed finish.
- Mix cement, sand, and water to produce concrete, grout, or slurry, using hoe, trowel, tamper, scraper, or concrete-mixing machine.
- Chip, scrape, or grind high spots, ridges, or rough projections to finish concrete, using pneumatic chisel, hand chisel, or other hand tools.
- Mold expansion joints and edges, using edging tools, jointers, or straightedges.
- Move terrazzo installation materials, tools, machines, or work devices to work areas, manually or using wheelbarrow.
- Clean chipped area, using wire brush, and feel and observe surface to determine if it is rough or uneven.
- Repair concrete by cutting out damaged areas, drilling holes for reinforcing rods, and positioning reinforcing rods, using power saw and drill.
- Precast terrazzo blocks in wooden forms.
- Wet concrete surface and rub with stone to smooth surface and obtain specified finish.
- Build wooden molds, clamping molds around areas to be repaired, or setting up frames to the proper depth and alignment.
- Produce rough concrete surface, using broom.
- Remove frames when the foundation is dry.
- Signal truck driver to position truck to facilitate pouring concrete and move chute to direct concrete on forms.
- Spread roofing paper on surface of foundation and spread concrete onto roofing paper with trowel to form terrazzo base.
- Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth with a trowel.
- Connect pipe pieces and seal joints, using welding equipment, cement, or glue.
- Install or use instruments such as lasers, grade rods, or transit levels.
- Cut pipes to required lengths.
- Cover pipes with earth or other materials.
- Install or repair sanitary or stormwater sewer structures or pipe systems.
- Align and position pipes to prepare them for welding or sealing.
- Check slopes for conformance to requirements, using levels or lasers.
- Lay out pipe routes, following written instructions or blueprints and coordinating layouts with supervisors.
- Operate mechanized equipment, such as pickup trucks, rollers, tandem dump trucks, front-end loaders, or backhoes.
- Grade or level trench bases, using tamping machines or hand tools.
- Dig trenches to desired or required depths, by hand or using trenching tools.
- Tap and drill holes into pipes to introduce auxiliary lines or devices.
- Locate existing pipes needing repair or replacement, using magnetic or radio indicators.
- Train or supervise others in laying pipe.
- Connect pipe pieces and seal joints, using welding equipment, cement, or glue.
- Weld sections of track together, such as switch points and frogs.
- Patrol assigned track sections so that damaged or broken track can be located and reported.
- Repair or adjust track switches, using wrenches and replacement parts.
- Observe leveling indicator arms to verify levelness and alignment of tracks.
- Operate single- or multiple-head spike driving machines to drive spikes into ties and secure rails.
- Operate track wrenches to tighten or loosen bolts at joints that hold ends of rails together.
- Cut rails to specified lengths, using rail saws.
- Lubricate machines, change oil, or fill hydraulic reservoirs to specified levels.
- Drill holes through rails, tie plates, or fishplates for insertion of bolts or spikes, using power drills.
- Clean tracks or clear ice or snow from tracks or switch boxes.
- Clean, grade, or level ballast on railroad tracks.
- Raise rails, using hydraulic jacks, to allow for tie removal and replacement.
- Adjust controls of machines that spread, shape, raise, level, or align track, according to specifications.
- Dress and reshape worn or damaged railroad switch points or frogs, using portable power grinders.
- Clean or make minor repairs to machines or equipment.
- Grind ends of new or worn rails to attain smooth joints, using portable grinders.
- Operate single- or multiple-head spike pullers to pull old spikes from ties.
- String and attach wire-guidelines machine to rails so that tracks or rails can be aligned or leveled.
- Engage mechanisms that lay tracks or rails to specified gauges.
- Drive graders, tamping machines, brooms, or ballast spreading machines to redistribute gravel or ballast between rails.
- Drive vehicles that automatically move and lay tracks or rails over sections of track to be constructed, repaired, or maintained.
- Turn wheels of machines, using lever controls, to adjust guidelines for track alignments or grades, following specifications.
- Push controls to close grasping devices on track or rail sections so that they can be raised or moved.
- Operate tie-adzing machines to cut ties and permit insertion of fishplates that hold rails.
- Paint railroad signs, such as speed limits or gate-crossing warnings.
- Spray ties, fishplates, or joints with oil to protect them from weathering.
- Weld sections of track together, such as switch points and frogs.
