A professional who bolts round-up ring sections around steel can (cylinder) to retain circular shape of cylinder during casting of reinforced concrete pipe. Respnsibilities include:

• Rolls can on raised track into assembly line position, assisted by other workers.
• Measures and marks length of can to position rings, using gauge and chalk.
• Braces interior of can near end, using curved blocks and jack.
• Aligns mold-ring flange over can end and tightens set bolts, using wrench to lock rings in place.
• Positions and bolts ring halves against can, using jack and wrench.
• Rolls completed can on track to mortar-lining area.