0) No water closet permitted
1) Maximum two water closets
2) Maximum six water closets
3) Stacks - vertical runs of plumbing waste or drainage lines
The values are based on the major US plumbing codes.
Pipe Size | Maximum Drainage Fixture Units (DFU) | ||
---|---|---|---|
Slope (in/ft (cm/m)) | |||
NPS (inches) | DN (mm) | ||
1/4 (2.1) | 1/2 (4.2) | ||
20) | 50 | 21 | 26 |
2 1/20) | 65 | 24 | 31 |
3 | 80 | 421) | 501) |
4 | 100 | 216 | 250 |
5 | 125 | 480 | 575 |
6 | 150 | 840 | 1000 |
The purpose of the sanitary drainage system is to remove effluent discharged from plumbing fixtures and other equipment.
Dimensions of copper tubes ASTM B306 Drain Waste and Vent - DWV.
Dimensions of Poly(Vinyl Chloride) (PVC) Sewer Pipes with belled end.
Dimensions of cast iron soil pipes.
Cleanouts provides access to the sewer for rodding.
DFU are used to calculate the drainage flow from fixtures and the required capacities of sewer service systems.
Drain pipes and vent stack sizing.
Support of Drain Waste and Vent - DWV - pipes.
Vents in draining systems protects traps against pressure differences that could cause them to siphon or blow out .
Drainage Fixture Units (DFU) connected to building drains and sewers.
Recommended drain trap sizes for different types of fixtures
Minimum pitch of horizontal drainage pipes.
Plumbing or sanitation codes are a set of rules and regulations imposed by cities, counties or states.
Calculate expected volume flow load in sanitary drainage systems.
Septic systems handles waste from drain systems.
Carrying capacities of sewer and wastewater pipes - gpm and liter per second.
No. of fixture units and required trap size.
In sewage piping and pumping systems the fluid flow rate must be kept within certain limits to avoid operating problems.
Supply requirements for common fixtures.
Converting WSFU - Water Supply Fixture Units - to GPM.
WSFU is used to calculate water supply service systems.
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