WORK PROCESS SCHEDULE
Occupational Title: PLUMBER
DOT Code: 862.381-030
AIMS Code: 0432
Description:
Assembles, installs, and repairs pipes, fittings, and fixtures of heating, water, and drainage systems, according to specifications and plumbing codes. Studies building plans and working drawings to determine work aids required and sequence of installations. Inspects structure to ascertain obstructions to be avoided to prevent weakening of structure resulting from installation of pipe. Locates and marks position of pipe and pipe connections and passage holes for pipes in walls and floors, using ruler, spirit level, and plumb bob. Cuts openings in walls and floors to accommodate pipe and pipe fittings, using handtools and power tools. Cuts and threads pipe, using pipe cutters, cutting torch, and pipe-threading machine. Bends pipe to required angle by use of pipe-bending machine or by placing pipe over block and bending it by hand. Assembles and installs valves, pipe fittings, and pipes composed of metals, such as iron, steel, brass, and lead, and nonmetals, such as glass, vitrified clay, and plastic, using handtools and power tools. Joins pipes by use of screws, bolts, fittings, solder, plastic solvent, and caulks joints. Fills pipe system with water or air and reads pressure gauges to determine whether system is leaking. Installs and repairs plumbing fixtures, such as sinks, commodes, bathtubs, water heaters, hot water tanks, garbage disposal units, dishwashers, and water softeners. Repairs and maintains plumbing by replacing washers in leaky faucets, mending burst pipes, and opening clogged drains. May weld holding fixtures to steel structural members.
Description of Duties:
- Possesses a clear understanding and detailed knowledge of the associated tools and equipment and their maintenance requirements nomenclature and types of plumbing materials and supplies, technical manuals and procedures, safety procedures, and equipment and shop records.
- Uses shop tools, including operating tools and machines to bend, cut, thread, and hang cast iron, PVC, and copper piping.
- Installs and repairs plumbing systems and fixtures.
- Cuts opening in walls or floors for pipes; cuts, reams, threads, and bends pipes; and installs and connects fixtures and facilities such as hydrants, water mains, water closets, lavatories, showers, and sinks.
- Inspects and tests piping after completing repairs, alterations, and
- Tile, caulks, and seals elbows, unions, joints, and fixtures.
- Interprets work orders, oral instructions, and sketches; provides specific information on work to be accomplished, location of work,nature of repairs required, and materials needed to accomplish work; and compiles and submits reports of plumbing performed.
- Installs equipment such as water heaters and garbage disposals and modifies existing equipment.
On-The-Job Training:
APPROXIMATE HOURS
GENERAL TRADE ORIENTATION
250
Care and use of tools
Tests and measuring
Types and uses of pipe, fittings, fixtures
Equipment Repair records
GENERAL PIPE FITTING PRACTICE
2000
Bend iron, brass, copper pipe
Cut, ream, thread, burr, drill, and assemble pipe
Measure, cut, caulk cast iron pipe
Cut soil pipe, seal and caulk joints
Break and make joints for flanged piping,
renew gaskets
Wipe lead joints
Care and use of oxygen/acetylene torch
Care and use of welding equipment
SERVICE INSTALLATION
2000
Sketch and read blueprints-layout work
Measure, plumb, square, level layout
Make bills of material
Cut openings
Hang and brace pipe
Make riggings and supports
Install hot and cold water supply lines, valves,
strainers, faucets, etc.
Rough in drain in ground, suction and discharge
lines
Lay and connect drainage, soil pipe
Install vent systems soil stacks
Connect to main supply
Connect to sewer
Install radiators, heating, and ventilating units
Install heating system controls
FIXTURE INSTALLATION
1250
Sinks and tubs
Water closets and urinals
Showers and shower controls
Drinking fountains
Sprinkler systems; hangers, wet and dry pipe,
sprinkler heads
MAINTENANCE AND REPAIR
2000
Remove stoppagesStop leaks
Repair/renew valves, faucets, connections,
sprinkler heads
Repair and reseat fixtures
Repair and calibrate mechanical meters
MISCELLANEOUS
500
Orientation
Housekeeping
Safety
Activity not otherwise listed
Total 8000
Related Instruction:
MATHEMATICS
135
Practical arithmetic
Basic algebra
Plane geometry
Trigonometry
TRADE DRAWINGS AND TECHNICAL DOCUMENTATION
135
Blueprint reading
Elementary architectural drawing
Drawing and sketching
Specification writing
RELATED TRADE COURSES
306
Types of pipes and fittings
Hot water heating piping systems
Sewage systems
Plumbing and pipe fitting tools
Pipe fitting practice
Welding practice
Clay, iron, and vent systems
Occupational Safety and Health Act
Sanitary plumbing fixtures
Installation of gas appliances and piping
Total 576
On-The-Job Training:
FIRST YEAR
APPROXIMATE HOURS
A. Use of hand tools and equipment
300
B. Operation and care of pipe machinery
300
C. Installation of piping for waste, soil,
sewerage, vent and leader lines
1750
D. Installation of hot and cold water for
domestic purposes
1600
E. Installation of lead pipe, tin pipe,
wiped joints, sheet lead and solder work
200
F. Installation and setting of plumbing 1
appliances and fixtures
400
G. Welding connected with the trade
550
H. Maintenance and repair of plumbing
800
I. Gas piping and installation of gas appliances
800
J. Blueprints-sketching, layout, take off
300
Total 8000
FIRST YEAR
Introduction to plumbing as a trade, and the history of plumbing
Instruction in the identification and use of tools
Instruction in the proper care of tools
The training and skills necessary to install all types of pipe, tube,
fittings and valves.
An understanding of job safety and health
Training in soldering and brazing
Training in oxy-acetylene cutting
The fundamentals for solving math problems and the taking of measurements
Understanding of rigging and signaling
The ability to understand technical and isometric drawings
Job safety and health
Scope of OSHA law
Care of tools
Identification of plumbing materials
Material handling and storage
Use of hand tools and equipment
Proper measuring of piping
Soldering and brazing
Residential plumbing and layout
Installation of ABS residential plumbing
SECOND YEAR
Residential blueprint reading
Water distribution
Pipe, setting and proper use
Public sewage disposal
Private sewage disposal
Installation of pipe for waste sewage vents and service water lines
Repairing plumbing systems – residential
natural gas piping
Gas service
THIRD YEAR
Water treatment systems
Valve-faucet and meters on water lines
Advanced blueprint reading
Building and plumbing codes
Leveling instrument
Plumbing fixtures and appliances
Cross connection in water systems
Installation of gas appliances
Layout and material take off
Rigging and signaling
FOURTH YEAR
Troubleshooting plumbing systems
Human relations and communications
Special installations:
Swimming pool
Fountains
Solar heating
Lawn sprinkling and vacuum systems
Sizing gas systems
Advance plumbing codes and code application
Installation of traps and special interceptors
