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Washington-WA Plumbing Contractor (Residential) License Online Practice Test

Here is the table of contents for our online practice exam.

# Title Questions
1 Pipes, Water Pressure, Pipe Fittings and Hydronics 34
2 Plumbing, Valves, Gas Pipes, Oxygen, Gas Cylinders and Water Heaters 38
3 Values, Drainage, Vents and Standpipes 37
4 Plumbing, Valves, Water Heaters, Gas Pipes, Oxygen and Gas Cylinders 40
5 Plumbing, Appliances, Drains, Fixtures and Inspections 20
6 Plumbing, Installation and Repairs 31
7 Welding, Blazing, Arc, Oxyacetylene, Testing and Inspection 26
8 Excavating, Drainage, Compaction and Sitework 24
9 Underground Drainage and Pipelines 25
10 Installation, Pipes, Drainage and Trenches 41
11 Coatings and Control Corrosion 15
12 Installation, Joints, Field Elevations, Sewers and Sewer Testing 25
13 Installation, Pipes, Leach Fields and Tanks 28
14 Installing Irrigation Pipes 48
15 Plumbing, Septic Tanks, Drainage and Gas Lines 46
16 Sewer Maintenance and Repair 30
17 Sewer System Location Sites and Soil Conditions 23
18 System Design, Tank Size, Soils, Pathogens and Gases 25
19 Sanitary Sewers, Storm Sewers and Septic Tanks 40
20 Roof Drains 0
21 Construction Safety 35
22 OSHA Safety, Dig Alert, Asbestos and Code of Federal Regulations, Title 29, Part 1926 19
23 Mathematics, Calculations and Formulas 19
Total = 669

Washington-WA Plumbing Contractor (Residential) License Online Practice Test
  • Washington-WA Plumbing Contractor (Residential) License Online Practice Test
  • 3 Months Access, Available 24/7
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