Plumbing Engineering Studio

Animated walkthrough — 3 simulators · 3 calculators · 6 knowledge articles for plumbing engineers

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Engineering Learning Studio
Plumbing Engineering Studio
UPC / IPC Domestic Water DWV Drainage Fixture Units Backflow Prevention Grease Interceptors
🎮 Simulators 3
🧮 Calculators 3
📚 Articles 6
📥 Downloads 1
Plumbing Demand Flow SimulatorLIVE
IPC Hunter's Curve probability method for multi-story buildings. Configure building type, floors, and fixture counts per floor. Aggregates WSFU, converts to peak design GPM, sizes the service entrance, calculates static pressure loss, and flags if a booster pump is needed.
Hunter's CurveWSFUIPCBooster Pump
Grease Interceptor SizingLIVE
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 per local AHJ requirements.
PDI G-101FOGHGIGGI
Backflow Preventer SelectionLIVE
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 per IPC and AWWA guidance.
RPZDCVACross-ConnectionBackflow
Plumbing Design ReferenceLIVE
Interactive 11-section reference covering Hunter's method, sanitary drainage (IPC/UPC), vent systems, water heaters (legionella prevention, ASHRAE 188), backflow prevention (RPZ/DCVA), roof drainage, medical gas (NFPA 99), and fuel gas (NFPA 54/IFGC).
Hunter's MethodNFPA 99Backflow RPZ11 Sections
Fixture Unit Counter (WSFU & DFU)LIVE
Tally Water Supply Fixture Units and Drainage Fixture Units for 12 fixture types per IPC tables. Input counts for each fixture type (water closet, lavatory, bathtub, shower, kitchen sink, dishwasher…) to compute total WSFU and DFU.
WSFUDFUIPC
Pipe Sizing Calculator (IPC)LIVE
Size cold and hot water supply pipes from WSFU using Hunter's Curve demand flow conversion to GPM, then applies velocity limits (max 8 fps cold, 5 fps hot) to select minimum pipe diameter per IPC Table 604.3.
IPCHunter's CurveGPM
Sprinkler Hydraulics (NFPA 13)LIVE
NFPA 13 density/area method for 6 hazard classes (Light, OH1-OH3, EH1-EH2). Computes total demand GPM, hose stream allowance, and residual pressure at the base of the riser for the design area.
NFPA 13GPMDensity/Area
Water Heater SizingLIVE
Size tank and tankless water heaters from peak demand GPH, incoming cold water temperature, desired hot water supply temperature, and occupancy type. Legionella prevention temperature requirements per ASHRAE 188.
GPH DemandASHRAE 188Legionella
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Plumbing Code Fundamentals: UPC vs. IPC — Scope, Differences, and Adoption Map
11 min
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Domestic Water System Design Guide: Hunter's Curve, Pipe Sizing, and Pressure Zones
13 min
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Sanitary Drainage, Traps, and Venting Systems: DFU Loads and Trap-to-Vent Distances
13 min
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Backflow Prevention and Cross-Connection Control: Protecting Potable Water
11 min
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Grease Interceptor Design and Sizing: PDI G-101, HGI, and GGI Selection
10 min
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Medical Gas Systems Design per NFPA 99: Zone Valves, Outlets, and Alarm Systems
13 min
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Plumbing Systems Design Reference
Interactive 11-section reference · Hunter's Method · Sanitary Drainage · Backflow RPZ · NFPA 99 Med Gas
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