Vent Installation Regulations
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Questions and Answers

What is the purpose of a yoke vent in the installation of soil or waste stacks?

  • To reduce the number of vent stacks needed
  • To connect the soil stack to the roof drainage system
  • To increase the diameter of the soil stack
  • To provide a relief vent at every fifth floor level (correct)
  • 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 (correct)
  • Twice the capacity of the secondary compartment
  • Equal to the total capacity of the tank
  • At least half the total capacity of the tank
  • What material is commonly used for Private Sewage Disposal Systems?

  • Wood
  • Cement (correct)
  • Aluminum
  • Steel
  • How is the depth of liquid in the first compartment of a septic tank regulated?

    <p>Not less than 0.6 m and not more than 1.8 m</p> Signup and view all the answers

    What is the minimum diameter requirement for the vertical legs of inlet and outlet pipes in Private Sewage Disposal Systems?

    <p>104.6 mm or more</p> Signup and view all the answers

    Why is it important to have an additional manhole over the baffle wall in septic tanks exceeding 3.7 m in length?

    <p>To provide access for cleaning and maintenance</p> Signup and view all the answers

    What is the minimum vertical rise required for a vent pipe before it can offset horizontally?

    <p>152 mm</p> Signup and view all the answers

    What is the minimum distance a vent opening must be from any lot line, alley or street boundary line?

    <p>0.9 m</p> Signup and view all the answers

    What is the minimum distance a vertical vent pipe must extend from any part of the roof that is used for human activities?

    <p>3.0 m</p> Signup and view all the answers

    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?

    <p>Increase by 1 pipe size</p> Signup and view all the answers

    What is the minimum height a vent pipe must terminate above the roof?

    <p>150 mm</p> Signup and view all the answers

    What is the minimum distance a vent opening must be from any openable window?

    <p>3.0 m</p> Signup and view all the answers

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