Sewage installations - Bypass ventilation

Product	InstalSystem 5
Type of article	FUNCTION AND TOOL
Source for translation	2023-06-21

Description

The article describes methods of implementation of double stacks, which are a combination of sewage and ventilation bypass stacks.

Location in the program

The type of the stack is indicated in the Data table.

1. Pipe-run types.

All necessary points should be specified.

Example of use

The program provides several schemes to perform such types of stacks. Schemes A-D are applicable to buildings from 3 to 5 floors (less or equal to 12m in height). Schema E - for the buildings with more than 5 floors (more than 12m in height)

• Schema A:
  • Direct parallel ventilation: vent stack is connected to the sewage stack at the bottom near the stack foot and at the top to the vent cowl;
  • Generate intermediate ventilation connections can be made or not depending on the project features.
    

    

    2. Schema A.

    
    
• Schema B:
  • Indirect parallel ventilation: vent stack is connected to the branches on each floor;
  • Air admittance valve is used like an Element on top of stack for both stacks (Sanitary drainage and Ventilation conduit).
    

    

    3. Schema B.

    
    
• Schema С:
  • Direct parallel ventilation: vent stack is connected to the sewage stack at the bottom near the stack foot and at the top to the vent cowl;
  • Generate intermediate ventilation connections are made;
  • Connection to the vent stack from each fixture on the first floor and from each sewage branch on the floors above.
    

    

    4. Schema C.

    
    
• Schema D:
  • Air admittance valve is used on the first floor;
  • Drainage ventilating pipe-run are connected to the sewage stack on the floors above.
    

    

    5. Schema D.

    
    
• Schema E:
  • Direct parallel ventilation: vent stack is connected to the sewage collector. The connection must be made at least 2 m from the base of the stack;
  • Generate intermediate ventilation connections should be made;
  • Fixtures on the first floor are connected to the additional stack;
  • The connection of the additional stack to the main stack is made by the means of a "vent loop".
    

    

    6. Schema E.

    
    

Additional informations

Optional section that contains additional information describing the function/element of the program..