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Questions and Answers
Which type of construction limits the effectiveness of traditional water application methods in fighting attic fires?
What happens when the hose stream is directed into an attic space with wood rafters or engineered trusses?
What percentage of the attic was affected when water was applied through the gable vent in the experiments?
Which of the following is true about applying water through open eaves in the attic space?
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What can be done if the eaves are solid in order to achieve the same tactical concept as opening the eaves?
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In a building with a center hallway, where can a trough be opened to suppress an attic fire?
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Which type of construction limits the effectiveness of traditional water application methods in fighting attic fires?
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What can be done to make suppression efforts more effective in fighting attic fires?
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What percentage of the attic was affected when water was applied through the gable vent in the experiments?
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Which of the following is a tactic that can be used when the eaves are solid in order to expose the roof deck and wet the sheathing in the attic space?
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What is the purpose of wetting the sheathing in the attic when fighting a fire?
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What type of construction limits the effectiveness of traditional water application methods in fighting attic fires?
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True or false: Getting water directly onto the fire is critical to effective fire suppression.
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True or false: Attic construction can limit the effectiveness of traditional water application methods.
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True or false: Wetting the sheathing in the attic is important when fighting a fire.
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True or false: Water application through open eaves can reach over 2/3 of the burning surfaces in the attic space?
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True or false: Opening a trough along an exterior wall parallel to the eaves line exposes the roof deck in the same way as opening the eaves?
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True or false: When fighting an attic fire, wetting the sheathing allows water to rain down on the other combustible contents in the attic?
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Study Notes
Attic Fires and Water Application
- Engineered truss construction limits the effectiveness of traditional water application methods in fighting attic fires.
Effectiveness of Water Application Methods
- When a hose stream is directed into an attic space with wood rafters or engineered trusses, the water may not penetrate the void spaces and may not reach the seat of the fire.
- Wetting the sheathing in the attic is important when fighting a fire, as it allows water to rain down on the other combustible contents in the attic.
Water Application through Gable Vents and Eaves
- When water was applied through the gable vent in experiments, only 20-30% of the attic was affected.
- Applying water through open eaves can reach over 2/3 of the burning surfaces in the attic space.
- If the eaves are solid, opening a trough along an exterior wall parallel to the eaves line exposes the roof deck in the same way as opening the eaves.
Tactically Opening Troughs
- In a building with a center hallway, a trough can be opened to suppress an attic fire by opening it along the center hallway.
Importance of Direct Water Application
- Getting water directly onto the fire is critical to effective fire suppression.
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Description
Test your knowledge on how attic construction can impact the effectiveness of traditional water application in fighting fires. Explore the challenges and limitations of directing hose streams into attic spaces.
