Pipelayers

Grade or level trench bases, using tamping machines or hand tools.

Cut pipes to required lengths.

Dig trenches to desired or required depths, by hand or using trenching tools.

Install or use instruments such as lasers, grade rods, or transit levels.

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.

Public Safety and Security

Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.

Mechanical

Knowledge of machines and tools, including their designs, uses, repair, and maintenance.

Operation and Control

Controlling operations of equipment or systems.

Quality Control Analysis

Conducting tests and inspections of products, services, or processes to evaluate quality or performance.

Active Listening

Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.