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Apply caulking compounds by hand or caulking guns to protect against entry of water or air.
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Mix, pour, or spread concrete, using portable cement mixers.
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Provide assistance to craft workers, such as carpenters, plasterers, or masons.
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Grind, scrape, sand, or polish surfaces, such as concrete, marble, terrazzo, or wood flooring, using abrasive tools or machines.
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Dig ditches or trenches, backfill excavations, or compact and level earth to grade specifications, using picks, shovels, pneumatic tampers, or rakes.
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Operate or maintain air monitoring or other sampling devices in confined or hazardous environments.
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Spray materials, such as water, sand, steam, vinyl, paint, or stucco, through hoses to clean, coat, or seal surfaces.
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Tend machines that pump concrete, grout, cement, sand, plaster, or stucco through spray guns for application to ceilings or walls.
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Position or dismantle forms for pouring concrete, using saws, hammers, nails, or bolts.
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Raze buildings or salvage useful materials.
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Install sewer, water, or storm drain pipes, using pipe-laying machinery or laser guidance equipment.
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Read plans, instructions, or specifications to determine work activities.
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Mix ingredients to create compounds for covering or cleaning surfaces.
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Signal equipment operators to facilitate alignment, movement, or adjustment of machinery, equipment, or materials.
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Operate jackhammers or drills to break up concrete or pavement.
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Tend pumps, compressors, or generators to provide power for tools, machinery, or equipment or to heat or move materials, such as asphalt.
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Clean or prepare construction sites to eliminate possible hazards.
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Measure, mark, or record openings or distances to layout areas where construction work will be performed.
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Perform site activities required of green certified construction practices, such as implementing waste management procedures, identifying materials for reuse, or installing erosion or sedimentation control mechanisms.
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Position, join, align, or seal structural components, such as concrete wall sections or pipes.
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Smooth or finish freshly poured cement or concrete, using floats, trowels, screeds, or powered cement finishing tools.
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Mop, brush, or spread paints, cleaning solutions, or other compounds over surfaces to clean them or to provide protection.
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Lubricate, clean, or repair machinery, equipment, or tools.
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Control traffic passing near, in, or around work zones.
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Erect or dismantle scaffolding, shoring, braces, traffic barricades, ramps, or other temporary structures.
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Load, unload, or identify building materials, machinery, or tools, distributing them to the appropriate locations, according to project plans or specifications.
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Place, consolidate, or protect case-in-place concrete or masonry structures.