Builders (BU) build and repair wood, concrete and masonry structures; performs rough, finished carpentry, and masonry install sheet rock, paneling, ceramic tile, millwork, trim, and perform paint and preservation; build forms, mixes, places, and finishes concrete for varous types of projects; operate and maintain carpentry and cabinet making shops; build and repair water front structures make estimates or mater als and labor or construction projects and maintain individual combat readiness and perform tasks required in combat and disaster preparedness or recovery operations.