Lay pipe for storm or sanitation sewers, drains, and water mains. Perform any combination of the following tasks: grade trenches or culverts, position pipe, or seal joints.

Align and position pipes to prepare them for welding or sealing. Check slopes for conformance to requirements, using levels or lasers. Connect pipe pieces and seal joints, using welding equipment, cement, or glue. Cover pipes with earth or other materials. Cut pipes to required lengths. Dig trenches to desired or required depths, by hand or using trenching tools. Grade and level trench bases, using tamping machines and hand tools. Install and repair sanitary and stormwater sewer structures and pipe systems. Lay out pipe routes, following written instructions or blueprints, and coordinating layouts with supervisors. Locate existing pipes needing repair or replacement, using magnetic or radio indicators. Tap and drill holes into pipes to introduce auxiliary lines or devices. Install and use instruments such as lasers, grade rods, and transit levels. Operate mechanized equipment such as pickup trucks, rollers, tandem dump trucks, front-end loaders, and backhoes. Train others in pipe-laying, and provide supervision.

Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance. Building and Construction -- Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads.

Operation and Control -- Controlling operations of equipment or systems. Equipment Selection -- Determining the kind of tools and equipment needed to do a job.

Trunk Strength -- The ability to use your abdominal and lower back muscles to support part of the body repeatedly or continuously over time without 'giving out' or fatiguing. Stamina -- The ability to exert yourself physically over long periods of time without getting winded or out of breath. Dynamic Strength -- The ability to exert muscle force repeatedly or continuously over time. This involves muscular endurance and resistance to muscle fatigue. Static Strength -- The ability to exert maximum muscle force to lift, push, pull, or carry objects. Dynamic Flexibility -- The ability to quickly and repeatedly bend, stretch, twist, or reach out with your body, arms, and/or legs. Extent Flexibility -- The ability to bend, stretch, twist, or reach with your body, arms, and/or legs. Explosive Strength -- The ability to use short bursts of muscle force to propel oneself (as in jumping or sprinting), or to throw an object. Gross Body Coordination -- The ability to coordinate the movement of your arms, legs, and torso together when the whole body is in motion. Multilimb Coordination -- The ability to coordinate two or more limbs (for example, two arms, two legs, or one leg and one arm) while sitting, standing, or lying down. It does not involve performing the activities while the whole body is in motion. Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects.

Performing General Physical Activities -- Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling of materials. Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things. Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles). Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.