6035 Drainage Outcome 1 part 2

What is a key feature of the secondary ventilated stack system?

• It has a primary vent connected to the dry section of the stack.

• It has a secondary vent connected from just above the long radius bend.

• It has no vent system.

• It has a vent system connected to the wet section of the stack.

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

• To reduce the airflow.

• To increase the water flow.

• To allow additional airflow and safeguard against pressure fluctuations.

• To block the airflow.

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

• Residential homes

• Public buildings

• Small offices

• Private houses

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

• 500mm

• 1000mm

• 750mm

• 600mm

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

• Reduces water usage

• Increases water pressure

• Allows additional airflow

• Decreases installation cost

What does the ventilation in each discharge branch safeguard against in a ventilated branch system?

• Water contamination

• Positive or negative pressure fluctuations

• Pipe corrosion

• Blockages

In a ventilated branch system, which direction do the discharge branches migrate?

• Upwards

• Downwards

• Horizontally

• Diagonally

What is the minimum size of the branch ventilating pipe for a single appliance in a ventilated branch system?

• 20mm

• 25mm

• 30mm

• 32mm

What is the minimum size of the branch ventilating pipe for multiple appliances in a ventilated branch system?

• 20mm

• 25mm

• 30mm

• 32mm

In a ventilated branch system, what is the purpose of the branch ventilating pipes migrating upwards?

• To allow effluent to discharge

• To prevent effluent from entering the vent system

• To increase water pressure

• To reduce water pressure