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WorksheetsChapter 12: House Drains and House Sewers
Total questions: 15
Worksheet time: 8mins
When a lot is subdivided and already connected to a public sewer, what must the new parcels do?
a) Install a private sewage system
b) Connect to the public sewer
c) Use a temporary holding tank
d) Request an exemption from the Administrative Authority
A public sewer is considered unavailable if it is located more than:
a) 30 meters from the drainage connection
b) 50 meters from the drainage connection
c) 61 meters from the drainage connection
d) 100 meters from the drainage connection
If a lot can connect to an existing public sewer in front of the property, what restriction applies?
a) No permit for a private sewage system will be issued
b) The owner can choose between public or private sewage
c) The owner must install both systems
d) The property owner must pay a penalty
Which of the following cannot be discharged into the sewer system?
a) Stormwater
b) Flammable liquids
c) Poisonous gases
d) All of the above
Who approves the connection of rain, surface, or subsurface water to an excreta drainage system?
a) The property owner
b) The construction company
c) The Administrative Authority
d) The Local Water District
The size of a building sewer is determined based on:
a) The total number of fixture units (FU) drained
b) The total number of rooms in the house
c) The age of the building
d) The number of floors in the structure
What is the minimum size of any building sewer?
a) 100 mm
b) 125 mm
c) 150 mm
d) 200 mm
Building sewers must be run at a uniform slope of at least:
a) 1% (10.5 mm per meter)
b) 2% (21 mm per meter)
c) 3% (30 mm per meter)
d) 5% (50 mm per meter)
If it is impractical to meet the required slope of 2%, what is the minimum allowed slope for pipes of 102mm to 152.4mm diameter?
a) 0.5%
b) 1%
c) 1.5%
d) 2%
Building sewer pipes must be laid on:
a) Soft soil
b) A firm bed or approved support
c) Any available surface
d) A wooden platform
A cleanout is required at what maximum distance in a straight run of sewer pipes?
a) 10 meters
b) 15 meters
c) 20 meters
d) 25 meters
The maximum distance between manholes shall not exceed:
a) 50 meters
b) 75 meters
c) 91 meters
d) 100 meters
If a sewer pipe and water pipe are laid in the same trench, how far must the water pipe be above the sewer?
a) 0.1 meter
b) 0.3 meter
c) 0.5 meter
d) 1 meter
Water pipes must be at least how far horizontally from a sewer pipe?
a) 0.3 meter
b) 1 meter
c) 2 meters
d) 3 meters
After connecting to a public sewer, abandoned facilities must be filled within:
a) 10 days
b) 15 days
c) 30 days
d) 60 days
