PART 4: Draft Sanitary and Storm Drainage

What is the purpose of a sanitary installation?

• To supply clean water to the house

• To remove waste and wastewater from a building

• To store rainwater for future use

• To filter drinking water

Which type of pipe is commonly used for sanitary and storm drainage?

• Copper pipes

• Polyvinylchloride (PVC) pipes

• Galvanized iron pipes

• Lead pipes

What is the function of a fixture trap?

• To speed up water drainage

• To stop sewer gases from entering the building

• To filter solid waste from wastewater

• To connect the plumbing system to the main sewer

What type of waste does a soil line carry?

• Rainwater

• Wastewater only

• Solid waste and wastewater

• Drinking water

What is the purpose of vent pipes in a drainage system?

• To remove solid waste

• To prevent clogging of pipes

• To allow air circulation and release sewer gases

• To increase water pressure

Where does the liquid waste from a septic tank flow?

• Into the storm drain

• Into the street sewer

• Into the sewer line

• Into a storage tank

What is the main function of a catch basin?

• To store rainwater for household use

• To catch and redirect stormwater drainage

• To treat wastewater before disposal

• To connect household plumbing to the main sewer

What is the required slope for waste pipes to ensure proper drainage?

• 1% or 10mm per meter run

• 2% or 20mm per meter run

• 5% or 50mm per meter run

• 10% or 100mm per meter run

Why must drainage pipes be sloped properly?

• To increase water pressure

• To prevent backflow and allow gravity flow

• To store wastewater before disposal

• To reduce the need for ventilation

How does the storm drainage system differ from the sanitary drainage system?

• The storm drainage system carries only solid waste, while the sanitary system carries wastewater.

• The storm drainage system disposes of rainwater, while the sanitary system carries household waste.

• The storm drainage system connects directly to the septic tank, while the sanitary system connects to the street sewer.

• There is no difference between the two systems.