Types of systems - Secondary ventilated stack

With the Secondary ventilated stack system, the main stack has a secondary vent, which is connected from just above the long radius bend going up to the ______ section of the stack.

• dry

• wet

• horizontal

• base

What does the secondary vent in a Secondary ventilated stack system allow?

• Additional airflow and safeguards against pressure fluctuations

• Water drainage

• Electrical wiring

• Waste removal

The secondary vent in a Secondary ventilated stack system safeguards against both positive and negative pressure fluctuations.

• True

• False

Look at the diagram of the Secondary ventilated stack system. Which part is labeled as the 'Secondary ventilating stack'?

• The vertical pipe running alongside the main stack

• The horizontal pipe at the bottom

• The pipe connected to the toilet

• The pipe connected to the sink

In the diagram of the Secondary ventilated stack system, what is the function of the 'Rodding eye'?

• It provides access for cleaning and removing blockages in the pipe.

• It regulates the water flow in the stack system.

• It acts as a vent to release gases from the system.

• It supports the weight of the stack pipes.

Refer to the diagram of the Secondary ventilated stack system. Which pipe is responsible for carrying waste from multiple fixtures to the main stack?

• Secondary ventilating stack

• Branch discharge pipe

• Main discharge stack

• Rodding eye

In the diagram of the Secondary ventilated stack system, name the main vertical pipe that carries waste to the sewer.

• Main discharge stack

• Vent pipe

• Branch pipe

• Overflow pipe

In what type of buildings is the ventilated branch system typically used?

• public buildings, hotels, hospitals, etc.

• residential houses only

• industrial warehouses only

• agricultural barns only

Each branch in a ventilated branch system is ventilated no more than ____ from the appliance.

• 750mm

• 500mm

• 1000mm

• 1500mm

What is the main benefit of ventilating each branch in a ventilated branch system?

• It allows additional airflow, safeguarding against any positive or negative pressure fluctuations.

• It reduces the need for regular maintenance of the system.

• It increases the water pressure in the pipes.

• It eliminates the need for traps in the drainage system.