Domestic water design, sanitary drainage and venting, fixture unit calculations, backflow prevention, grease interceptors, and UPC/IPC plumbing code references.
Simulate domestic water demand for a multi-story building using the IPC Hunter's Curve probability method. Configure building type, number of floors, and fixture types and counts per floor. The simulator aggregates WSFU floor-by-floor, converts to peak design GPM, sizes the service entrance pipe, and calculates static pressure loss due to elevation. A results panel shows whether available street pressure is sufficient or whether a booster pump is needed.
PDI G-101 hydromechanical grease interceptor sizing and gravity interceptor (GGI) volume calculator. Input fixture flow rates, grease retention factor, and pumping frequency to size the right interceptor for a commercial kitchen.
Interactive decision tree for selecting the correct backflow prevention device (air gap, RPZ, DCVA, PVB, SCVB) based on hazard degree (high vs. low), backflow type (back-pressure vs. back-siphonage), and application type.
Tally Water Supply Fixture Units and Drainage Fixture Units for 12 fixture types per IPC tables.
Size cold and hot water supply pipes from WSFU using Hunter's Curve demand flow and velocity limits.
NFPA 13 density/area method for 6 hazard classes. Total demand GPM, hose allowance, and residual pressure.
Plumbing is a licensed trade with specialty certifications layered on top. This overview covers the journeyman → master → contractor license ladder, plus medical-gas, backflow-tester and plumbing-design credentials.
Journeyman Plumber prep: plumbing code (UPC/IPC), DWV & venting, water-supply sizing, fixtures and gas piping.
Master Plumber prep: advanced code application, system design/sizing, plan review and cross-connection control.
Plumbing Contractor prep: the trade exam plus business & law — estimating, contracts, liens and bonding.
Medical Gas (ASSE 6010/6020) prep: NFPA 99 med-gas piping, brazing, verification, zone valves and purity testing.
Backflow Tester (ASSE 5110) prep: cross-connection control, assembly types (RP/DC/PVB) and field test procedures.
CPD / PE Mechanical prep: plumbing-system design — water supply/drainage, fixture units, storm and gas systems.
Interactive 11-section plumbing reference covering water supply sizing (Hunter's method), sanitary drainage (IPC/UPC), vent systems (trap-to-vent distances), water heaters (legionella prevention), backflow prevention (RPZ/DCVA), roof drainage, medical gas (NFPA 99), and fuel gas (NFPA 54/IFGC).