Assemble, install, and repair pipes, fittings, and fixtures of heating, water, and drainage systems, according to specifications and plumbing codes.

Assemble pipe sections, tubing and fittings, using couplings, clamps, screws, bolts, cement, plastic solvent, caulking, or soldering, brazing and welding equipment. Fill pipes or plumbing fixtures with water or air and observe pressure gauges to detect and locate leaks. Review blueprints and building codes and specifications to determine work details and procedures. Prepare written work cost estimates and negotiate contracts. Study building plans and inspect structures to assess material and equipment needs, to establish the sequence of pipe installations, and to plan installation around obstructions such as electrical wiring. Keep records of assignments and produce detailed work reports. Perform complex calculations and planning for special or very large jobs. Locate and mark the position of pipe installations, connections, passage holes, and fixtures in structures, using measuring instruments such as rulers and levels. Measure, cut, thread, and bend pipe to required angle, using hand and power tools or machines such as pipe cutters, pipe-threading machines, and pipe-bending machines. Install pipe assemblies, fittings, valves, appliances such as dishwashers and water heaters, and fixtures such as sinks and toilets, using hand and power tools. Cut openings in structures to accommodate pipes and pipe fittings, using hand and power tools. Hang steel supports from ceiling joists to hold pipes in place. Repair and maintain plumbing, replacing defective washers, replacing or mending broken pipes, and opening clogged drains. Direct workers engaged in pipe cutting and preassembly and installation of plumbing systems and components. Install underground storm, sanitary and water piping systems and extend piping to connect fixtures and plumbing to these systems. Clear away debris in a renovation. Install oxygen and medical gas in hospitals. Use specialized techniques, equipment, or materials, such as performing computer-assisted welding of small pipes, or working with the special piping used in microchip fabrication.

Customer and Personal Service -- Knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction. Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance. English Language -- Knowledge of the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar. 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. Mathematics -- Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications. 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. Chemistry -- Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods. Design -- Knowledge of design techniques, tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.

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. Mathematics -- Using mathematics to solve problems. Troubleshooting -- Determining causes of operating errors and deciding what to do about it. Repairing -- Repairing machines or systems using the needed tools. Complex Problem Solving -- Identifying complex problems and reviewing related information to develop and evaluate options and implement solutions. Installation -- Installing equipment, machines, wiring, or programs to meet specifications. Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Time Management -- Managing one's own time and the time of others. Reading Comprehension -- Understanding written sentences and paragraphs in work related documents. Management of Material Resources -- Obtaining and seeing to the appropriate use of equipment, facilities, and materials needed to do certain work.

Arm-Hand Steadiness -- The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position. Problem Sensitivity -- The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem. 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. Static Strength -- The ability to exert maximum muscle force to lift, push, pull, or carry objects. Oral Expression -- The ability to communicate information and ideas in speaking so others will understand. Deductive Reasoning -- The ability to apply general rules to specific problems to produce answers that make sense. Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations). Oral Comprehension -- The ability to listen to and understand information and ideas presented through spoken words and sentences. Visualization -- The ability to imagine how something will look after it is moved around or when its parts are moved or rearranged. Finger Dexterity -- The ability to make precisely coordinated movements of the fingers of one or both hands to grasp, manipulate, or assemble very small 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. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources. Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things. Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events. Repairing and Maintaining Mechanical Equipment -- Servicing, repairing, adjusting, and testing machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical (not electronic) principles. Performing for or Working Directly with the Public -- Performing for people or dealing directly with the public. This includes serving customers in restaurants and stores, and receiving clients or guests. Making Decisions and Solving Problems -- Analyzing information and evaluating results to choose the best solution and solve problems. Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles). Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects. Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.