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DRAINAGE & SEWERAGE SYSTEM - Coggle Diagram
DRAINAGE & SEWERAGE SYSTEM
DEFINITION:
a system of pipework to convey the discharge from sanitary fittings, rainwater gutters and downpipes to a suitable disposal installation.
to connect the pipework to public sewer
will convey the discharges to a local outhority sewage treatment plant
DRAINAGE SYSTEM can be classified into
Surface water
effluent collected from surfaces such as roofs and paved area
considered to be clean and can be discharges direct into
approval water course of soakaway
Foul or soil water
effluent contaminated by domestic or trade waste
will require treatment to render it clean
before it can be discharge into approved water course
DOMESTIC DRAINAGE
Drains
can be defined as a means of conveying surfece water
or foul water below ground water
Sewers
have the same functions as drain but collect the discharge from a number of drains and convey it to final outfall.
can be a private or public sewer depending on who is responsible for the maintenance
DRAINAGE SCHEME (FACTORS)
External positions of rainwater pipes.
Disposition of buildings.
Internal layout of sanitary fittings.
Topography of the area to be served.
Drainage system and location of the local outhority sewers.
Relative positions of discharge points.
Number of discharge points.