Calculation should include
- using measurements and leveling instruments
- determining that gradient = fall/distance.
IRC: Chapters 26 and 30 cover sanitary drainage, Chapter 31 covers venting of waste pipes, and Chapter 32 covers traps. This includes installation, pipe connections, securing pipe, and falling pipe (https://codes.iccsafe.org/content/IRC2018P4).
Process/Skill Questions:
- How much head pressure is required for an accurate water test?
- How are open lines sealed?
- Who oversees and checks the water test?
NCCER Standards:
Plumbing: Level 1
- 02104-05 Introduction to Plumbing Math
- 02106-05 Plastic Pipe and Fittings
- 02108-05 Cast-Iron Pipe and Fittings
- 02112-05 Introduction to Drain, Waste, and Vent (DWV) Systems
Plumbing: Level 2
- 02201-05 Plumbing Math Two