| 1. | Assist plumbers by performing rough-ins, repairing and replacing fixtures, and locating and repairing leaking or broken pipes. |
| 2. | Cut or drill holes in walls or floors to accommodate the passage of pipes. |
| 3. | Measure, cut, thread and assemble new pipe, placing the assembled pipe in hangers or other supports. |
| 4. | Mount brackets and hangers on walls and ceilings to hold pipes, and set sleeves or inserts to provide support for pipes. |
| 5. | Requisition tools and equipment, select type and size of pipe, and collect and transport materials and equipment to work site. |
| 6. | Fit or assist in fitting valves, couplings, or assemblies to tanks, pumps, or systems, using hand tools. |
| 7. | Assist pipe fitters in the layout, assembly, and installation of piping for air, ammonia, gas, and water systems. |
| 8. | Excavate and grade ditches, and lay and join pipe for water and sewer service. |
| 9. | Cut pipe and lift up to fitters. |
| 10. | Disassemble and remove damaged or worn pipe. |
| 11. | Clean shop, work area, and machines, using solvent and rags. |
| 12. | Install gas burners to convert furnaces from wood, coal, or oil. |
| 13. | Immerse pipe in chemical solution to remove dirt, oil, and scale. |
| 14. | Clean and renew steam traps. |
| 15. | Fill pipes with sand or resin to prevent distortion, and hold pipes during bending and installation. |