Drainage & Sewerage

Which of the followings are true for combined system

• Less pipe work

• More pipe work

• Bigger treatment plant needed

• Smaller treatment plant needed

Malaysia use Combined System in treating waste water because we have high rainfall

• TRUE

• FALSE

The image shown is ...

• box culvert

• drain sump

• manhole

• strip foundation

Surface water drain must be laid as straight as possible (less curves and corners) to to ensure rapid water flow

• TRUE

• FALSE

P Trap shown in the diagram contain water because ...

• to check leakage at pipe joints

• to avoid foul air entering into the building

• to clean the pipes

• for safety reason

Which of the followings materials can be use for sewer pipe

• Cast iron pipe

• Vitrified clay pipe

• Concrete pipe

• PVC pipe

Which type of pipe support is shown in the photo?

• Concrete bedding

• Concrete benching

• Concrete covering

• Concrete blinding

The yellow objects shown in the photo are ...

• iron steps for maintenance purposes

• for decorative purposes

• to strengthen the manhole structure

• iron steps for people to climb up the manhole if they fall in

Manhole A (G.L.=2.30, I.L.=1.80)

depth of Manhole A is ...

• 2.30m

• 1.80m

• 0.5m

• 4.10m

Works involve in constructing the drain shown are ...

• Excavation work

• Concreting work

• Brick laying work

• Plastering work

• Drain laying work