Plumbing System Design Optimizer
Generate IPC/UPC-compliant plumbing designs with load calcs and constructability analysis
What You Can Do
You can rapidly generate schematic and design development plumbing systems that comply with IPC/UPC codes, calculate fixture demand loads and pipe sizing, perform pressure and velocity checks, and identify spatial conflicts before detailed design. Claude analyzes your project parameters—building type, fixture counts, water pressure requirements, drainage grades—and produces complete system layouts with compliance narratives and constructability warnings that reduce coordination delays and rework.
Features
creates complete supply/drain/vent requirements for all plumbing fixtures with code-required sizing
computes water supply demand using Hunter Curve methodology and drainage/vent sizing per code tables
verifies water distribution pressures (20–80 PSI), flow velocities (2–8 ft/s), and drainage slopes (1/8–1/4 inch per foot)
cross-checks designs against IPC, UPC, and jurisdiction-specific amendments for potable water, sanitary drainage, and vent systems
generates conceptual plumbing stack configurations, hot water circulation schemes, and service entrance design with clearance requirements
identifies access restrictions, spatial clashes, maintenance clearances, and renovation scope challenges early in design
produces permit-ready compliance statements and system descriptions for submission to authorities
sizes detention/infiltration systems and analyzes grease traps, backflow devices, and pressure regulation schemes
Example Output
Example 1: Office Building Demand Load Calculation
Floor Area: 25,000 SF | Occupancy: 250 people
Fixture Schedule:
- 30 Water Closets (20 GPM) → Total: 600 GPM
- 25 Lavatories (4 GPM) → Total: 100 GPM
- 5 Kitchen Sinks (10 GPM) → Total: 50 GPM
Demand Load (Hunter): 185 GPM peak
Service Line: 2" (180 GPM capacity) ✓ ADEQUATE
Main Vent Stack: 3" (suitable for 3 stories) ✓ CODE COMPLIANT
Constructability Notes: Vent stack located at building core—no obstruction from structural columns. Drainage routing to roof with 1/4" slope achievable.
Example 2: Residential Retrofit Scope
Existing: 1/2" copper main with galvanized branches (60 PSI available)
Proposed Additions: 2 bathrooms, 1 kitchen remodel
Pressure Analysis:
- New demand (3 fixtures simultaneous): 45 GPM
- Available at meter: 60 PSI → Adequate
- Recommend: 3/4" PEX main replacement (future-proofs for demand)
- Vent routing: Tie to existing 2" stack (capacity verified) ✓
Required Permits: Plumbing (main/vent work), Mechanical (hot water tank)
What's Included
- SKILL.md instruction file with plumbing code framework, fixture load tables, and system requirements:
- Fixture Schedule Template with supply/drain/vent sizing columns and code references:
- Load Calculation Checklist for demand load, drainage, and vent sizing workflows:
- Code Compliance Matrix mapping IPC/UPC sections to common design scenarios:
- Constructability Conflict Checklist for spatial analysis and maintenance access verification:
Who It's For
- MEP engineers and plumbing designers — validating conceptual layouts and performing rapid load calculations during schematic phase
- Architects and project managers — reviewing plumbing feasibility and identifying constructability risks early in design
- Code compliance consultants — verifying IPC/UPC adherence and generating design narratives for permit submissions
- Renovation and retrofit specialists — defining scope, analyzing existing system capacity, and planning upgrades
- Facilities managers and building engineers — assessing system performance and planning maintenance accessibility
Best For
- Water supply demand calculations and service line sizing for commercial and residential buildings
- Sanitary drainage, vent stack, and storm water system layout and sizing
- Code compliance verification and design narrative generation for permit submissions
- Schematic and design development phase constructability reviews and conflict identification
- Hot water system design, water heater sizing, and recirculation system planning
- Renovation scope definition and existing system capacity analysis for retrofit projects
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