Drainage piping and recommended minimum slope or pitch:
|3 - 6||1/8||0.01||1:100|
|8 or larger||1/16||0.005||1:200|
- 1 in/ft = 0.083 m/m
The purpose of the sanitary drainage system is to remove effluent discharged from plumbing fixtures and other equipment.
Cleanouts provides access to the sewer for rodding.
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.
Maximum Drainage Fixture Unit - DFU - loads in sanitary piping systems.
Convert slopes pitch between degrees, gradients and grades.
Roof drain capacities.
Storm-water runoff coefficients for various surfaces
No. of fixture units and required trap size.