12 Questions
What is the purpose of a yoke vent in the installation of soil or waste stacks?
To provide a relief vent at every fifth floor level
In Private Sewage Disposal Systems, how is the capacity of the first compartment calculated?
Not less than 2/3 of the total capacity of the tank
What material is commonly used for Private Sewage Disposal Systems?
Cement
How is the depth of liquid in the first compartment of a septic tank regulated?
Not less than 0.6 m and not more than 1.8 m
What is the minimum diameter requirement for the vertical legs of inlet and outlet pipes in Private Sewage Disposal Systems?
104.6 mm or more
Why is it important to have an additional manhole over the baffle wall in septic tanks exceeding 3.7 m in length?
To provide access for cleaning and maintenance
What is the minimum vertical rise required for a vent pipe before it can offset horizontally?
152 mm
What is the minimum distance a vent opening must be from any lot line, alley or street boundary line?
0.9 m
What is the minimum distance a vertical vent pipe must extend from any part of the roof that is used for human activities?
3.0 m
What is the minimum pipe size increase required for the "vent stack through roof" (VSTR) above the connection between the stack vent and the horizontal vent?
Increase by 1 pipe size
What is the minimum height a vent pipe must terminate above the roof?
150 mm
What is the minimum distance a vent opening must be from any openable window?
3.0 m
Learn about the regulations for installing vents, including the requirement for grading, connection, and height above fixtures. Understand the guidelines for vent pipes extending above the roof or reconnecting to the soil or waste stack vent.
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