Secondary Ventilation System Quiz

What is the purpose of the secondary vent in a secondary ventilated stack system?

• To increase water flow

• To allow additional airflow and safeguard against pressure fluctuations

• To reduce noise levels

• To enhance structural stability

Where is the secondary vent connected in a secondary ventilated stack system?

• At the base of the stack

• Just above the long radius bend going up to the dry section of the stack

• At the top of the stack

• Below the main vent

What is the main purpose of a secondary ventilated stack in plumbing systems?

• To provide additional water supply

• To enhance air circulation and prevent siphoning

• To increase water pressure

• To reduce water temperature

In what type of systems is a ventilated branch system typically used?

• Smaller residential systems

• Larger systems with high risk of trap seal loss

• Systems with low airflow requirements

• Systems with no ventilation needs

What is the maximum distance a branch can be ventilated from the appliance in a ventilated branch system?

• 500mm

• 1000mm

• 750mm

• 250mm

What does the ventilation in each discharge branch safeguard against?

• Water leakage

• Positive or negative pressure fluctuations

• Electrical faults

• Temperature changes

What type of system is shown in the diagram?

• Ventilated branch system

• Closed loop system

• Open drainage system

• Gravity-fed system

What is the function of the discharge branches in a ventilated branch system?

• To allow effluent to discharge

• To prevent effluent from entering the vent system

• To increase water pressure

• To filter impurities

In a ventilated branch system, what is the minimum size of the branch ventilating pipe for a single appliance?

• 20mm

• 25mm

• 30mm

• 32mm

For multiple appliances, what is the minimum size of the branch ventilating pipe in a ventilated branch system?

• 25mm

• 28mm

• 32mm

• 35mm