Chapter 12: House Drains and House Sewers

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