DTM #5 Apparatus characteristics which can contribute to accidents Flashcards
Depending on type of vehicle, it will take between ____ to ____ for air to reach brakes
1/4 to 1 second
Excessive front overhang on some trip is as much as ______ from front wheel hub
7’4”
Brake fade is one of the worst consequences of heat do you to
Excessive breaking
Steering, breaking and cornering are all affected by
Over or under inflated tires
Traveling faster than usual saves only a few seconds while increasing the chances of an accident
True
Proper tread depth reduces chances of hydroplaning in wet conditions
True
Convex mirrors greatly reduce the blind areas on most apparatus
True
Brake lag used for total stopping distance formula= .4 seconds
However DTM states it will take ___ to ___ second for air to reach brakes
1/4 to 1 second
Treadwear is measured bi-monthly at the time of the ____ (4/32)
F-377
Tire PSI are checked when the tires are ___
Cold
Average width of newer triples is=
Average length of a triple is=
9’9”
27’
Vehicles can hydroplane in how much water?
1/5” of water
Average weight of a triple=
Average height=
Average width=
Average length=
16 tons
10’ height
9’9” width
27’ length
Total stopping distance =
NMPH X 28/10 +
(NMPH)2 x 5/10
_____ or less of the tire tread is not satisfactory
1/8”
_____ brakes are more susceptible to break fade. _____ brakes become more efficient as they heat up
Drum
Disc
Mirror placement is especially critical during emergency responses in_______.
Intersections
Tire psi should be checked when tires are cold and maintained at recommended psi, for a 2003 Seagraves that’s ______ front-_____ rear
120 front
120 rear
Dad’s on disc brake system may contact with a small percent of disks service therefore allowing a major percent of disk to be
Cooler
On newer apparatus the widest point continues from
Bumper to top of the cab
In an LAFD triple length of the wheel base is the most important factor in determining the what?
Turning radius
_____ brakes are most susceptible to brake fade
Drum brakes
