JATC 1A QUESTIONS AND VERIFIED
CORRECT ANSWERS 100%
Abandon answer - Means leave equipment where it is and get out of the structure immediately.
Withdraw answer - Means grab the equipment and exit the structure to reform strategy.
Abandon is a term used for emergency exit whereas withdraw is usually a change in strategy
causing the exit.
-Wye answer - is an appliance that give the ability to connect 2 1 ¾ hoses to a 2 1/2. It is
commonly used for the drop the wye evolution to have hose reach an upper floor without
having to lay hose all the way up the stairs and along the building. It is also can be used for the
valve to turn flow on or off.
-Adapter hose answer - is used to connect the same size hose that have mismatched threading
or lack of thread. This encompasses double male or double female fittings as well as threaded
to storz.
-Siamese valve answer - have 2 inlets and one output. We mostly carry a Siamese with two 1 ¾
to combine into a 2 ½ output. These can help overcome friction loss when LDH is not available
or practical.
-Gate valve answer - controls flow between sections of hose or on a hydrant (2 ½ connection) .
It is used on hydrants to allow for another connection to be made without having to shut down
the hydrant. It can also be used to variably reduce flow.
-Appliance answer - Any piece of hardware used in conjunction with fire hose to control the
flow or change the pathway is an ________. Some frequently used appliances include valves,
fittings, and intake strainers.
, -Clapper valve answer - are one way valves used to prevent backflow. These are common in
appliances with multiple intakes (Siamese).
-Reducer answer - connects a smaller hose to a larger hose. This is useful in cases where you
need higher pressure farther from the pump. By dropping the width of the hose it in turn adds
pressure to the water flow.
-Ball valve answer - can quickly open and close while still minimizing friction loss when in the
open position.
Backdraft answer - Heat and product of combustion accumulated inside a compartment
depleting availability oxygen, then oxygen is reintroduced into the compartment causing rapid
combustion.
Flashover answer - rapid transition from the growth stage to the fully developed stage
Smoke Explosion answer - Form of fire gas ignition: the ignition of accumulated flammable
products of combustion and air that are within their familable range.
Rollover answer - A condition where the unburned fire gases that have accumulated at the top
of a compartment ignite and flames propagate through the hot-gas layer or across the ceiling.
Dead loads answer - weight of the structure, structural members, building components and any
other features permanently attached to the building that is constant and immobile
Live Loads answer - items within a building that are movable but are included as a permanent
part of the structure; merchandise, stock, furnishings, occupants, firefighter, and the water used
for the fire suppression are examples of the live loads (2) force placed upon a structure by the
addition of people, objects or weather.
CORRECT ANSWERS 100%
Abandon answer - Means leave equipment where it is and get out of the structure immediately.
Withdraw answer - Means grab the equipment and exit the structure to reform strategy.
Abandon is a term used for emergency exit whereas withdraw is usually a change in strategy
causing the exit.
-Wye answer - is an appliance that give the ability to connect 2 1 ¾ hoses to a 2 1/2. It is
commonly used for the drop the wye evolution to have hose reach an upper floor without
having to lay hose all the way up the stairs and along the building. It is also can be used for the
valve to turn flow on or off.
-Adapter hose answer - is used to connect the same size hose that have mismatched threading
or lack of thread. This encompasses double male or double female fittings as well as threaded
to storz.
-Siamese valve answer - have 2 inlets and one output. We mostly carry a Siamese with two 1 ¾
to combine into a 2 ½ output. These can help overcome friction loss when LDH is not available
or practical.
-Gate valve answer - controls flow between sections of hose or on a hydrant (2 ½ connection) .
It is used on hydrants to allow for another connection to be made without having to shut down
the hydrant. It can also be used to variably reduce flow.
-Appliance answer - Any piece of hardware used in conjunction with fire hose to control the
flow or change the pathway is an ________. Some frequently used appliances include valves,
fittings, and intake strainers.
, -Clapper valve answer - are one way valves used to prevent backflow. These are common in
appliances with multiple intakes (Siamese).
-Reducer answer - connects a smaller hose to a larger hose. This is useful in cases where you
need higher pressure farther from the pump. By dropping the width of the hose it in turn adds
pressure to the water flow.
-Ball valve answer - can quickly open and close while still minimizing friction loss when in the
open position.
Backdraft answer - Heat and product of combustion accumulated inside a compartment
depleting availability oxygen, then oxygen is reintroduced into the compartment causing rapid
combustion.
Flashover answer - rapid transition from the growth stage to the fully developed stage
Smoke Explosion answer - Form of fire gas ignition: the ignition of accumulated flammable
products of combustion and air that are within their familable range.
Rollover answer - A condition where the unburned fire gases that have accumulated at the top
of a compartment ignite and flames propagate through the hot-gas layer or across the ceiling.
Dead loads answer - weight of the structure, structural members, building components and any
other features permanently attached to the building that is constant and immobile
Live Loads answer - items within a building that are movable but are included as a permanent
part of the structure; merchandise, stock, furnishings, occupants, firefighter, and the water used
for the fire suppression are examples of the live loads (2) force placed upon a structure by the
addition of people, objects or weather.
