MS Plumber study plan
MS Plumber · Give each week a clear focus.
8 weeks · About 6 hours per week
Sanitary Drainage, Vents, and Traps
Define and distinguish soil stack, waste stack, vent stack, stack vent, and relief vent per code.
Calculate correct trap arm length and vent distance for common fixtures using code tables.
Explain the purpose and installation requirements of each trap type (P-trap, drum trap, grease trap).
List the six prohibited trap designs and explain why each is disallowed.
Your checkpoint
Create a one-page reference sheet listing all vent types with their code-defined functions, maximum distances, and a sketch of a typical DWV system.
Sanitary Drainage, Vents, and Traps
Size a building drain and building sewer given total fixture units and slope using code tables.
Determine when and where cleanouts are required, including spacing and access requirements.
Identify the requirements for horizontal drainage piping support and slope.
Explain the difference between a combination waste and vent system and a conventional system.
Your checkpoint
Complete a practice problem set of 10 DWV sizing scenarios (given fixture units and slope, determine pipe size) with at least 80% accuracy.
Water Supply and Distribution
Calculate minimum pipe size for a water service and building supply using fixture unit counts and pressure requirements.
Determine developed length and apply friction loss and elevation changes to size a water distribution system.
Explain the requirements for water pressure, flow rate, and pipe sizing for common fixtures.
Identify the minimum and maximum allowable pressures in a water distribution system.
Your checkpoint
Produce a water supply sizing worksheet for a two-story single-family dwelling, showing fixture units, developed length, and selected pipe sizes for each section.
Plumbing Definitions, Fixtures, and Fixture Fittings & Plumbing Math, Sizing, and Fixture Units
Compute total fixture units for a given building layout using standard fixture unit values.
Determine minimum fixture clearances and installation requirements for water closets, lavatories, and bathtubs.
Calculate the required number of fixtures for a commercial occupancy based on occupant load and code ratios.
Solve plumbing math problems involving pipe volume, capacity, and conversion between units.
Your checkpoint
Complete a comprehensive fixture unit calculation and fixture count for a small commercial building (e.g., office with restrooms) and verify against code minimums.
Joining Methods, Materials, and Piping Installation & Backflow Prevention, Cross-Connection Control, and Potable Water Protection
Select the correct joining method for copper, PEX, CPVC, PVC, and cast iron based on application and code.
Describe the installation requirements for backflow prevention assemblies (RPZ, DCVA, PVB, AVB) and when each is required.
Identify the five types of backflow prevention devices and their testing requirements.
Explain the concept of cross-connection and list at least five common cross-connection hazards.
Your checkpoint
Create a comparison table of joining methods for five piping materials, including appropriate applications, code restrictions, and a list of backflow prevention devices with their typical uses.
Storm Drainage and Special Plumbing Systems & General Regulations, Licensing, and Code Administration
Size a storm drainage system for a flat roof given rainfall intensity and roof area.
Explain the requirements for secondary (emergency) roof drains and scuppers.
Describe the licensing and permit process for plumbing work in your jurisdiction.
Identify the key differences between the plumbing code and local amendments that may affect your work.
Your checkpoint
Complete a storm drainage sizing problem for a 5,000 sq ft roof with a given rainfall rate, and write a one-page summary of the permit and inspection process for a typical residential plumbing project.
Safety, Tools, and Jobsite Practices & Backflow Prevention, Cross-Connection Control, and Potable Water Protection
List the personal protective equipment required for common plumbing tasks and explain when each is necessary.
Identify safety hazards associated with trenching, soldering, and working with chemicals, and describe mitigation steps.
Explain the testing and maintenance requirements for backflow prevention assemblies.
Describe the procedure for conducting a cross-connection survey of a commercial building.
Your checkpoint
Develop a jobsite safety checklist for a plumbing installation project, covering PPE, tool use, and hazard communication, and outline a cross-connection survey plan for a restaurant.
General Regulations, Licensing, and Code Administration & Plumbing Definitions, Fixtures, and Fixture Fittings & Water Supply and Distribution & Sanitary Drainage, Vents, and Traps & Storm Drainage and Special Plumbing Systems & Joining Methods, Materials, and Piping Installation & Plumbing Math, Sizing, and Fixture Units & Backflow Prevention, Cross-Connection Control, and Potable Water Protection & Safety, Tools, and Jobsite Practices
Review and summarize key code sections from all domains, focusing on frequently tested requirements.
Complete a full-length practice exam under timed conditions and score at least 75%.
Review incorrect answers and create flashcards for weak areas.
Verify exam-day logistics: test center location, required identification, and permitted reference materials.
Your checkpoint
Achieve a passing score on a timed 100-question practice exam and compile a list of 20 code sections to review again before exam day.
Milestones
Week 4: Score at least 70% on a 30-question quiz covering DWV and water supply sizing, and correctly complete the fixture unit calculation deliverable without errors.
Week 6: Score at least 75% on a 50-question mixed quiz covering all domains studied so far, with particular attention to storm drainage and regulations.
Week 8: Achieve a score of 75% or higher on a full-length timed practice exam and demonstrate mastery of backflow prevention and safety by scoring at least 80% on those sections.