const labor

Read plans, instructions, or specifications to determine work activities. Measure, mark, or record openings or distances to layout areas where construction work will be performed. Dig ditches or trenches, backfill excavations, or compact and level earth to grade specifications, using picks, shovels, pneumatic tampers, or rakes. Load, unload, or identify building materials, machinery, or tools, distributing them to the appropriate locations, according to project plans or specifications. Erect or dismantle scaffolding, shoring, braces, traffic barricades, ramps, or other temporary structures. Place, consolidate, or protect case-in-place concrete or masonry structures. Mix, pour, or spread concrete, using portable cement mixers.