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BUILDING CONSTRUCTION 1 ARC 1523PROJECT 1 : DOCUMENTATION AND ANALYSIS PREPARED BY : RENEE LIM WEI FEN (0311016) 9

The diagram below shows the external works of the sewerage system where roof drain connections, drain foundations, road drainage all links down to one main sewer pipe.

Offset Sight Rail

Sewer Pipe

Existing ground

Soffit level

Invert level

Offset Distance

Depth of coverLength of traveller required for initial excavation

Sewerage works also requires a small step of settingout in order to excavate and lay the sewer pipe downunderground with the right gradient in the ground.

Gutters that collect rain water for rood water drainage

Underfround pipelines for drain foundation aroundthe house.

Manhole cover and framethat is needed durng servicing of the sewer system.

Sewer pipe where all water slows to that will exit out of the housing area.

3.1 EXTERNAL WORK

SEWERAGE WORKS