Company Officer Chapter 10 Flashcards
The re-ignition of gases that have arisen and encountered fresh air, and a new supply of oxygen?
Rollover
What is the national fire Academy’s fire flow formula?
Fire flow in (GPM )=
Area in SQFT ( LxW) Divided by 3
Ex. 20•30=600/3= 100gpm
A dramatic event in a room fire that rapidly leads to full involvement of all combustible materials present?
Flashover
A type of explosion caused by a sudden influx of air into a mixture of burning gasses that have been heated to the ignition temperature of at least one of them?
Backdraft
An assessment of the departments access to and into a building?
Access factors
Self operating Thermo sensitive device that releases a spray of water over a designated area to control or extinguish a fire?
Automatic fire protection sprinkler
The amount of heat required to raise the temperature of 1 pound of water 1°F?
(BTU). British thermal unit
An assessment of the consequences on the community which includes the people, their property, and the environment.
Community consequences
The science of the phenomena and consequences of fire?
Fire behavior
The movement of fire from one area to another?
Fire extension
Stuff that will burn?
Fire load
A type of building construction in which the structural components are noncombustible and protected from fire?
Type I construction
fire resistive construction
Second phase of fire growth has sufficient fuel and oxygen to allow for continued fire growth?
Free burning phase
The amount of heat given off by a particular substance during the combustion process?
Heat of combustion
A type of building construction in which the exterior walls are usually made of Masonary, and therefore noncombustible?
Type IV construction
Heavy timber construction
The minimum temperature to which a subject must be heated to start combustion after an ignition source is introduced?
Ignition temperature
First stage of fire Growth limited to the material originally ignited.
Incipient phase
The number of people in danger, the immediacy of their danger, and their ability to provide for their own safety?
Life risk factors
A type of building construction in which the structural elements are noncombustible or limited combustible?
Type II construction
Non-combustible construction
An assessment of the risks associated with a particular structure based on the content and activities there in?
Occupancy factors
A type of building construction in which the exterior walls are usually made of masonry, and therefore, noncombustible; the interior structural members may be either combustible or noncombustible?
Type III construction
Ordinary construction
An assessment of the value and hazards associated with property that is at risk?
Physical factors
An assessment of the resources available to mitigate a given situation?
Resource factors
A mental assessment of the situation; gathering and analyzing information that is critical to the outcome of the event?
Size up
Third stage of fire growth, once the oxygen has been reduced, visible fire diminishes.
Smoldering phase
The heat absorbing capacity of a substance?
Specific heat
Plumbing installed in a building or other structure to facilitate firefighting operations?
Standpipe system
And assessment of the age, condition, and structure type of a building, and the proximity to exposures?
Structural factors
And assessment of the safety hazards for both civilians and firefighters any particular occupancy?
Survival factors
The water flow requirements expressed in gallons per minute needed to control a fire in a given area?
Theoretical fire flow
Rising of hotter gases in an enclosed space, cooler gases will be forced down?
Thermal stratification
The systematic process to enhance the removal of smoke and fire byproducts and that entry of cooler air to facilitate rescue and firefighting operations?
Ventilation
A type of building construction in which the entire structure is made of wood or other combustible material?
Woodframe construction
How does the NFA fire flow formula help and prefire planning and fire suppression operations?
In order to control the fire the quantity of water applied to control the fire must be able to absorb the hate being produced. By using the formula in preplanning fire attacks you can get an idea of the amount of water you would need for a particular building, this also assists you in your size up to determine the # and size of lines needed
What are the five fire building classifications?
Type I fire restrictive construction Type II noncombustible construction Type III ordinary construction Type IV heavy timber construction Type V wood frame construction
This type of construction is the best. A building built of fire resistive materials and the structural components of the building that is the principal parts that hold the building up, are protected from direct exposure to any fire that may be On going in the building, no building is fireproof
Fire resistive construction
A type of building construction in which the structural elements are noncombustible or limited to , walls typically are masonry or concrete block roof has long spans without support popular for one story commercial and industrial group often steel beam or trust unsupported unprotected steel fails during fire conditions
Type II Non-combustible construction
Found in older cities is characterized by Masonary exterior walls often referred to as Main Street USA because of common use and small commercial occupancies also have what I referred to as taxpayers retail first floor residential above
Type III ordinary construction
Roof and floors or supported by roof rafters and Joyce substantial size often 3” x 10” these components were set into pocket in the masonry walls to reduce collapse during a fire the ends of the rafters and Joyce were often Firecut so they pull out of the pockets during collapse and don’t pull the walls down
Type III Ordinary construction
Called heavy timber or mill construction got its name from the type of structures built using these methods primarily northeastern states Masonary exterior walls and heavy timbers support floors and walls. The combination of heavy timbers and Masonary walls provide strength for structure. heavy timbers are at least 8” x 8”
Type IV heavy timber construction
Early often involved heavy machinery may have stressed the building and left oil soap floors while vastly superior to what is used today it can fail and sometimes surprisingly quick
Heavy timber
Entire construction is made of wood or other combustible material. Since pioneers nearly 400 years ago woodframe construction has been used because of low cost and ease. Always been a problem because the structure itself can be destroyed in fire. Older wood frames are balloon frame studs ran all the way up reducing costs
Woodframe construction
Platform frame construction the walls are erected one level at a time up on the platform of the floor. The long vertical spaces with balloon frame present a considerable hazards due to rapid and often undetected vertical fire spread within the walls, platform reduced these hazards
Woodframe construction
2” x 10” structural components to support floors lightweight trust that contains a fraction of wood used in solid component, far more vulnerable to failure when exposed to fire.
Lightweight construction