A professional who performs any combination of following duties involved in preparing forms and pouring concrete to make prestressed structural beams. Respnsibilities include:

• 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.