Plumbing Calculator
Plumbing Calculator
Calculer pipe sizing, water flow, fixture units, and drainage requirements
Plumbing System Analysis
Résultats
Plumbing Calculations
Step-by-Step Solution
Specifications
Code Requirements
Enter plumbing specifications to calculate requirements
Quick Plumbing Examples
Plumbing Code Guide
Fixture Units
Toilet: 4 fixture units
Standard residential toilet
Standard residential toilet
Sink: 1 fixture unit
Bathroom or kitchen sink
Bathroom or kitchen sink
Shower: 2 fixture units
Standard shower stall
Standard shower stall
Pipe Sizing
1/2 inch: 8 GPM maximum
Branch lines to fixtures
Branch lines to fixtures
3/4 inch: 13 GPM maximum
Main supply lines
Main supply lines
1 inch: 21 GPM maximum
Service entrance
Service entrance
Drainage Requirements
Minimum Slope: 2% (1/4" per foot)
For proper drainage
For proper drainage
Vent Requirements: Every fixture
Prevents siphonage
Prevents siphonage
Cleanouts: Every 100 feet
For maintenance access
For maintenance access
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