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WorksheetsPART 4: Draft Sanitary and Storm Drainage
Total questions: 15
Worksheet time: 8mins
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.
Why must septic tanks be airtight and placed at a safe distance from potable water sources?
To reduce maintenance costs
To prevent contamination of drinking water
To ensure wastewater flows faster
To increase the lifespan of the tank
If you are designing a plumbing system for a house, where should you place the septic vault?
Inside the bathroom
Under the kitchen sink
At a safe distance outside the house
Near the water supply tank
If a pipe in the drainage system has a slope of only 5mm per meter, what problem might occur?
Water will flow too fast, causing excessive pressure.
Wastewater might not flow properly, leading to blockages.
More air ventilation will be required.
The pipes will need additional support to prevent collapse.
A household is experiencing frequent foul odors coming from their drains. Which issue is most likely the cause?
The fixture traps are missing or faulty.
The water pressure is too high.
The pipes are too small.
The house drain is connected to the storm drainage.
A homeowner notices that during heavy rains, water is backing up into their house through the drains. Which of the following could be a potential cause?
The septic tank is too small.
The house drain is connected to the storm drain.
The pipes are made of PVC instead of concrete.
The water supply pressure is too low.
