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36 Cards in this Set
- Front
- Back
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How do you check roof stability?
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Sound with a tool.
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How would you warn members when breaking a skylight?
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Break a small amount, pause, then continue, or radio.
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How do you know if you're over the main body of fire?
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Bubbling tar
fire showing from a top floor dry spots melting snow |
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What is a kerf cut?
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small triangular observation hole
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Describe a salvage cover.
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12x18 heavy duty plastic cover with 24 grommets on the sides and ends
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When throwing a coverall what should be done to expel the air?
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Pull down sharply
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When forming a catch all what and where are the folds made?
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Ends are 24", sides are 18", and the corners are folded in but not patted down
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When using two salvage covers to form a floor cover how is the seam made?
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First cover is folded back on itself 8" then the next cover is married on top and then 2 folds of 4" each are made and then patted down (8-4-4)
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When shutting gas off by a curb gate valve where is it located and how do you shut it off?
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between the curb and property line, turn clockwise 6-20 turns depending on size of valve
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If a fire valve cannot be opened at first how can you gain access?
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tap around the edge while applying pressure in a counter clockwise direction
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How do you turn off gas meters?
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Turning stopcock so that the operating lug is crosswise to the pipe, 1/4 turn
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Concerning building construction types of loads are broken into what broad categories, describe them?
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Dead and live loads, dead loads are weight of material permanently attatched to building, live loads are people, equipment, and other weight not attatched
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What is difference between lintel and header?
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Both are a beam that spans an opening, the difference is a header is used in wood construction, a lintel is used in masonary
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What are five categories developed to classify a structure?
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type 1 - Fire resistive
type 2 - non-combustible type 3 - ordinary type 4 - heavy timber type 5 - wood frame |
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What is a load bearing wall?
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Load bearing wall carries the weight of beams, other walls, floors, and roofs as well as it's own weight
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How can light weight wood I beam fail without direct fire contact?
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Heat exposure melts the binding glue
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Describe balloon frame
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older (pre 1950) wood frame buildings, wood stuns ran from foundation to the roof, floors were hung on the studs, fire could run from basement to attic
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When positioning apparatus, what is the collapse zone?
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1 1/2 times height of fire building
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define term fire load.
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The amount of heat energy released when combustibles burn in a given area or building expressed in BTU's (british thermal units)
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Define ventilation
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Planned, methodical and systematic removal of pressure, heat, smoke gasses and some cases even flame from an enclosed area through predetermined paths
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Ventilation can be broken down into two types, what are they?
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natural opening of building windows and doors letting physics take care of the rest, mechanical use of smoke fans, water and other mechanical devices to create air movement
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Mechanics of ventilation can be broken down into how many types and describe each one?
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Vertical is channeled pathway for fire ventilation via vertical openings, horizontal via horizontal openings
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General observations show that weather can play a part in the ventilation process?
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Such as cool dry days allow smoke to rise and escape vertically better, on rainy humid days smoke will lift more slowly
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What path shall smoke and heated gasses follow?
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Path of least resistance
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By not permitting heat level to linger on a material long enough, list the three things which might be prevented?
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Flashover, backdraft, rollover
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What is the space between a ceiling of the top floor and the bottom of the roof called?
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Cockloft
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Define the term backdraft?
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Smoke explosion, unburned smoke is heated with the abscence of oxygen, and when oxygen is introduced it produces an explosive force
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What is the most common tool to stop a sprinkler head?
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wedge
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the purpose of overhaul is to?
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ensure fire is completely extinguished
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Principal purpose of salvage is to?
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protect materials from water and smoke damage
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The most common hazard of salvage work is?
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ceiling collapse
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overhaul should be done as carefully as possible to assist in what?
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fire cause determination for FI
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What causes the most damage to a structure on the fire ground?
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water
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What is another name for plasterboard?
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sheetrock, drywall
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List two warnings that plaster board may collapse?
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Water seeping, sagging
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What position should a post indicator valve be kept in>
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open
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