Chapter 13 - Ventilation

What are Negative-Pressure fans called?

• PPV Fans

• Smoke Ejectors

• Blowers

• Fans

What type of ventilation occurs when fans are used to force air into a space to displace smoke?

• Positive-Pressure Ventilation

• Smoke Ejectors

• Negative-Pressure Fans

• Blowers

What cut works well on metal roofs because it prevents the decking from rolling away?

• Kerf Cut

• Rectangular Cut

• Triangular Cut

• Trench Cut

Where should the ventilation opening NEVER be made?

• On the Leeward side

• At the top of the roof

• Directly above the fire

• Between the Firefighter and the escape route

What is the main problem with using doorways as ventilation openings?

• It compromises Firefighter entry and exit

• It obstructs the flow of air

• It produces high volume air flow

• It restricts the flow of the air flow

What type of ventilation uses large fans and hydraulic ventilation?

• Natural Ventilation

• Positive-Pressure Ventilation

• Mechanical Ventilation

• Negative-Pressure Ventilation

What cut can create a large opening quickly and is particularly suitable for a flat or sloping roof with plywood decking?

• Kerf Cut

• Rectangular Cut

• Triangular Cut

• Trench Cut

What ventilation can Firefighters use when they need a quick or immediate ventilation?

• Natural Ventilation

• Mechanical Ventilation

• Positive-Pressure Ventilation

• Negative-Pressure Ventilation

What is a wall to wall, defensive vertical ventilation tactic that can be used to stop the progress of a large fire?

• Kerf Cut

• Rectangular Cut

• Triangular Cut

• Trench Cut

What do some roofs, especially truss roofs do when they are about to collapse?

• Will not give a warning

• Will give a warning

• Will stay strong

• Will show signs of collapse