Truck Questions 121.16 Flashcards
When shutting gas off by a curb gate valve where is it located and how do you shut it off?
Located between the curb and property line. Turn clockwise until resist (6-20 turns)
In ordinary construction, exterior walls are made of _______________
Non combustible or limited combustible materials
Gas meters can be turn off? If so explain the process
Turn stopcock so that operating lug is crosswise to the pipe. 1/4 turn
When forming a catch all what and where are the folds made?
Ends are 24 inches and and sides are 18 inches. Corners are folded in, but not patted down.
The first portable light should be set up?
At the entry point into the structure
The lighting and power equipment used on an emergency scene generally operates at?
110 volts ac
What is the term for operations undertaken to limit or reduce property losses?
Salvage
What is the term for plastic that will melt under fire conditions?
Thermoplastic
Fire retardant wood is treated with?
Mineral salt
What is the term for operations undertaken to find and extinguish any remaining pockets of fire?
Overhaul
Which sort of air movement is likely on a hot day in a air conditioned tall building?
Downdraft
What is a term for an open space within a wall where wires and pipes tun
Chase
What is a commonly used structural material in a type 1 building?
Protected steel
It is permissible to remove scba during salvage operations after?
Atmosphere has been tested and found safe
Within a room or space, where are the hottest gases found?
At the highest levels
Which structural component is composed of relatively smalll and lightweight components arranged in a series of triangles?
Tress
What are smoke,heat,gases collectively called?
Products of combustion
What is the maximum wattage that an apparatus-mounted generator can produce?
Between 10,000 and 15,000 Watts
What indications could you use to determine that you are over a main body of fire?
Bubbling tar, dry spots,melting snow,fire showing from top floor
Describe a salvage cover
12 x 18 heavy plastic cover, with 24 groomettes on the sides and ends
How does a member check for roof stability
Sound with a tool
What is type V construction?
Wood frame
Which hazards is of particular concern in a basement fire?
Smoke and heat venting up the stairs towards firefighters
When using two salvage covers to form a cover how is the seam made?
First cover fold back onto itself 8”. Next cover married on top , 2 folds of 4” inches each are made then patted down
What is term for the transfer of heat through a circulating medium of liquid or gas?
Convection
What is a “kerf” cut?
A small triangular cut used as a observation hole
Which device interrupts the current when there is a problem with an electrical ground?
G.F.I.
The output range for portable lights is generally ____________ watts?
300-1500 watts
Which type of construction is called ordinary construction?
Type 3
In which construction type are there uninterrupted channels in the walls from foundation to attic?
Balloon frame
What is the term for chemical change that occurs to wood when it is heated?
Pyrolysis
Which type of construction is navy timber?
Type 4
How would you warn members below that you are about to break a skylight?
Break small amount of glass
Use a portable radio
When throwing a coverall what should you do to expel air
Pull down sharply
If a fire valve cannot be open at first what may you do to assist yourself in gaining access?
Tap edges while applying press in a counterclockwise direction
The structural components of a type _________________ building will not burn?
Type 2
