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       CODE: 575.687-018 Buy the DOT:Download/CD-ROM
TITLE(s): LABORER, PRESTRESSED CONCRETE (concrete prod.)
Performs any combination of following duties involved in preparing forms and pouring concrete to
make prestressed structural beams: Cleans forms, using hammer, scraper, and brush, and sprays form
with oil to prevent adhesion of concrete. Places reinforcing steel cage in form, using power winch.
Pushes stressing cables through form, threads ends through guide holes in end plates, and clamps end
of cables to plate. Tightens nuts at base of form with power wrench, and inserts spacer bars and
locking pins at intervals along top of form to maintain specified dimensions of form. Clamps
vibrators in holders on sides of forms. Lays planks on protruding ends of spacer bars to make
elevated walkway on both sides of form. Lifts four-wheeled pouring buggy into position on walkway,
using winch. Lifts belt conveyor into position between pouring buggy and ready-mix truck with winch
and bolts it to truck, using power wrench. Starts conveyor and vibrators. Shovels sample of concrete
into canisters and tests consistency of concrete, using cone-shaped mold and trowel. Pushes pouring
buggy along walkway to follow ready-mix truck. Settles concrete at top of form with hand vibrator,
and fills low spots with concrete taken from conveyor. Removes forms from cured beams, using
handtools, and cuts protruding end of stressing cable, using oxyacetylene torch. Lifts beam, using
four-wheeled portable hoist (hoisting buggy), and moves hoist to yarding area by hand or with truck.
May prepare forms and cast concrete lintels.
GOE: 06.04.34 STRENGTH: H GED: R1 M1 L1 SVP: 2 DLU: 78
ONET CROSSWALK: 98999A Production Laborers
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