Truck Company Ops Book 3 Flashcards
NFPA 1901 states the minimum ground ladder compliment to be carried on aerial apparatus is?
115 Ft
NFPA requires marking portable ladders where?
The top 18 inches
Where are the heat sensors located on portable ground ladders?
Below the 2nd rung, and at the halfway point of the ladder
Ladder Placement Priorities are? (4 total)
Fire Floor
Floor above the fire
Adjacent compartments
Roof (if needed)
What should you estimate per floor in residential occupancies? (in feet) Same for commercial occupancies?
9 feet per floor (residential)
12 feet per floor (commercial)
Bedded Ladder lengths:
24’ Extension
28’ Extension (2-section)
35’ Extension (2-section)
35’ Extension (3-section)
14’
16’6”
20’
16’
Where and how do you position a ground ladder when a victim is at the window?
Throw the ladder to the side of window, once raised roll it onto sill. (Discourages victim from jumping as its raised)
How to position a ladder for performing ventilation?
Place tip of ladder next to and upwind of the opening, (not overtop of window)
Where to position ladder for ingress and egress?
Place tip of ladder at or slightly below the sill, in the center of window.
How do you position ladder if ascending the roof?
Place 3-5 rungs above the roofline.
How to position a ladder if ascending to the balcony?
Tip of ladder a minimum of 2 rungs above the railing, where the railing and exterior wall meet.
How many exits are required when working on the roof?
2 Exits
Any member operating on the aerial shall wear what?
Ladder belt or Scott Multi use strap
What is the proper way to raise the aerial with a victim present?
Raise,Rotate,Extend,Lower
Who are the first priorities for rescue on the scene of a fire?
Occupants most threatened by the fire
Truck Operator shall NOT leave the _____ when personnel are ascending the aerial to enter the IDLH.
Turntable
Aerial shall not be _____ or ______ with personnel on the rungs of the ladder?
Retracted or Extended
What do you do if aerial contacts power lines?
- Try and move ladder away from ladder (if possible)
- Stay on turntable and warn others to stay AT LEAST 30 FEET AWAY.
- Notify IC to have power company De Energize the lines.
If you come into contact with power lines and need to jump, what must you do?
Never touch the vehicle and the ground simultaneously.
What is the collapse Zone?
1 and a half times the height
3 main uses for aerial master stream?
Extinguishment
Exposure Protection
Flying Standpipe
Preferred angle to maximize an aerial master stream in SSC (Strip shopping center)
30 Degree, upward angle.
Prior to flowing master streams in a highrise what should be done with regard to people operating inside?
Personnel should be withdrawn to staging, which is at least 2 floors below the fire floor.
NFPA 1901 states that aerial apparatus must carry ____ feet minimum of total ladder length.
115 feet
Where does NFPA require ladders to be marked?
Top 18 inches, and middle point.
When should ladders be tested? When should they be inspected/cleaned?
Tested- annually Inspected/cleaned- Monthly or after every use
When did NFPA start requiring the use of heat sensors on ladders?
1984
Where should the heat sensors on ladders be located?
Between the second rung, and the halfway point on the ladder.
At what temp. will the heat sensors change color?
300 degrees F
How much load capacity does an aluminum ladder lose when exposed to fire?
25%
How should you grab the ladder if loaded tip out? Heel out?
Heel out- Grab fly section
Tip out- Grab bed section
What is the order you should place ladders on scene?
- Fire floor
- Floor above the fire
- Adjacent compartments and roof is applicable
How many ladders must be thrown for roof access before roof operations can take place?
Minimum of two ladders
How many feet per floor should you estimate for residential buildings? Commercial?
9- Residential 12- Commercial
How far is a typical run of residential stairs?
13 feet
If utilizing a leg lock on a ladder, what side should you perform your work off of?
The opposite side of the leg lock
When throwing ladders for roof access, how many rungs should be placed above the roof line?
3-5 rungs
If you have a window with smoke or fire showing, where should you place a ladder?
To the window with the smoke or fire, below the sill
What is the proper procedure for moving an aerial device to an objective?
- raise
2.rotate - extend
- lower
If you accidently come into contact with power lines with the aerial device, how far should you tell people to stay away from the truck?
30ft
What are the three main uses for elevated master streams.
- extinguishment
- exposure protection
- flying standpipe
To achieve the maximum benefit of any stream in a structure, how should the stream be directed?
30 degree angle, through an opening
If you have several floors with large volume of fire, where do you attack the fire first?
Lowest floor first, Then proceed up.
How do you attack a horizontal moving fire?
Stop the horizontal spread first, then attack the fire origin.
What is the nozzle reaction formula for smooth bore nozzles?
Fog nozzles?
S.B.- 1.5xD2xnp
Fog-.0505xqxsquare root of NP
Auto exposure protection is _____ ft. vertically with a master stream?
150
Stream Patterns for potential fires?
Narrow Fog/Straight Stream ?
Fog Stream?
Smooth bore Nozzle ?
Attic Fires
Exposure Protection
Warehouse/commercial building
