A plumbing contractor provides a means for a supply of safe water, ample in volume and of suitable temperature for the purpose intended and the proper disposal of fluid waste from the premises in all structures and fixed works. This classification includes but is not limited to:
(a) Complete removal of waste from the premises or the construction and connection of on-site waste disposal systems;
(b) Piping, storage tanks and venting for a safe and adequate supply of gases and liquids for any purpose, including vacuum, compressed air and gases for medical, dental, commercial and industrial uses;
(c) All gas appliances, flues and gas connections for all systems including suspended space heating units. This does not include forced warm air units;
(d) Water and gas piping from the property owner's side of the utility meter to the structure or fixed works;
(e) Installation of any type of equipment to heat water, or fluids, to a temperature suitable for the purposes listed in this section, including the installation of solar equipment for this purpose; and
(f) The maintenance and replacement of all items described above and all health and safety devices such as, but not limited to, gas earthquake valves, gas control valves, back flow preventors, water conditioning equipment and regulating valves.
Authority cited: Sections 7008 and 7059, Reference: Sections 7058 and 7059 (Business and Professions Code)
Content of the Examination
The Plumbing (C-36) Examination is divided into seven major sections. These sections are:
1. Project planning and material selection (23%)
Job site survey and contract submittals list
Blueprints, isometrics, and specifications
Planning and estimating
Pipe sizing and load calculations
2. Rough plumbing (18%)
Design and layout
Rough plumbing installation
Commercial and industrial
3. Installation/finish plumbing (17%)
Gas appliances and water heaters
Domestic potable water
4. Testing (8%)
Testing methods and code requirements
5. Repairing plumbing systems (12%)
Troubleshooting and repairs
Material replacement and disposal
6. Remodeling plumbing systems (10%)
Evaluation and layout
Installation of piping and fixtures
7. Safety (12%)
Tools and equipment
Worker and public safety
*Percentages are approximate*
The following questions are typical of the kind of items that are on the examination. The correct answer is highlighted.
1. How many gallons should a septic tank for a four-bedroom house hold?
2. Which of the following implements should be used to prevent kinks when reshaping soft copper tubes?
A brass ferrule
A bending spring
An internal switch
3. What fitting and procedure should be used to connect a discharge pipe from a sewage ejector to a horizontal gravity draining line?
From top through a tapped san tee fitting
From the side through a P-trap fitting
From the top through a wye branch fitting
From the bottom through a 1/8 bend fitting
*All questions are written and reviewed by licensed contractors who are actively working in the field*
California Plumbing Code.
International Association of Plumbing and Mechanical Officials (IAPMO),