WorksheetsDrainage - Soil Stack, Gullys, Manholes, Roddings
Total questions: 14
Worksheet time: 14mins
What is a soil stack in a building's drainage system?
A vertical pipe that carries only rainwater from the roof
A vertical pipe that carries waste water and sewage from toilets and sinks to the underground drain
A horizontal pipe that collects water from the garden
A pipe used for supplying fresh water to the house
What is the main function of a gully trap?
To store rainwater for later use
To prevent foul gases from entering the house by trapping water in its bend
To increase water pressure in the pipes
To filter drinking water
What is a manhole used for in a drainage system?
To provide access for inspection and cleaning of underground drains
To store waste water temporarily
To increase the speed of water flow
To connect the house to the main water supply
Which of the following best describes the appearance and purpose of a rainwater gully?
A small, covered pit with a grating at ground level, designed to collect surface water and direct it into the drainage system
A tall, vertical pipe attached to the side of a building
A large underground tank for storing rainwater
A metal box fixed to the roof
What is a rodding eye, and why is it important in drainage systems?
A device for measuring water pressure
An access point in a drain that allows rods to be inserted for clearing blockages
A type of water filter
A cover for a manhole
Which of the following is NOT a function of a soil stack?
Carrying waste water from toilets
Ventilating the drainage system
Supplying fresh water to the house
Carrying waste water from sinks and baths
Why is a water seal important in a gully trap?
It increases water pressure
It prevents foul odours and gases from escaping into the open air
It filters out solid waste
It speeds up water flow
Where would you typically find a manhole in a drainage system?
On the roof of a building
At ground level, above underground drains
Inside the kitchen
In the attic
What is the main difference between a rainwater gully and a gully trap?
Rainwater gullies are used for foul water, while gully traps are for rainwater
Rainwater gullies collect surface water, while gully traps are designed to prevent foul gases from escaping
Rainwater gullies are always made of metal, while gully traps are plastic
There is no difference
How does a rodding eye help maintain a drainage system?
By increasing water flow speed
By providing access for rods to clear blockages in the drain
By filtering out debris
By storing excess water
Which of the following best describes the purpose of a manhole cover?
To allow rainwater to enter the drain
To prevent unauthorised access and keep debris out of the manhole
To increase water pressure
To filter sewage
Which of the following is a key reason for installing a rodding eye at bends in a drainage system?
To allow for easier cleaning and removal of blockages at points where blockages are more likely to occur
To increase the water temperature
To reduce the cost of installation
To store rainwater
What is the main risk if a gully trap loses its water seal?
The drain will overflow
Foul gases and odours can escape into the open air
The water pressure will drop
The pipe will freeze
Which of the following best explains why regular inspection of manholes is important?
To ensure the covers are shiny
To check for blockages, leaks, or structural damage in the drainage system
To increase water flow speed
To keep the area looking tidy
