Truck Company

Question 1

climbing angle for ground ladders

Answer 1

75 DEGREES from horizontal

Question 2

how far away can ladder butt be

Answer 2

divide the used length of ladder by 4

Question 3

ladder placement ventilation

Answer 3

along side the window to the windward side, the tip should be even with the upper portion of the window. the same position can be used when FF need to climb in or out of narrow windows or direct hose streams into them

Question 4

entry/rescue ladder placement

Answer 4

mid line of the window slightly below the sill

Question 5

ladder placement guidlines

Answer 5

ladder at least two points on different side of a building for roof access/egress.
avoid placing over door or window openings where they may be exposed to flames/heat
place at building strong points (corners) when possible
place directly in front of window when used as a support for ejector, place tip above window opening on wall
avoid overhead obstructions
avoid uneven/soft terrain
avoid placing over paths of travel
communicate ladder placement to crews

Question 6

vertical ventilation

Answer 6

in absence of aerial device ground ladders are primary means of gaining access to roof up to 4 stories

Question 7

time available for escape TAE

Answer 7

as little as 11 min after ignition due to heat buildup in a confined space such as a bedroom

Question 8

fire burning inside a building IC choices

Answer 8

protect exposures, or order search of building and an aggressive interior attack

Question 9

rotary saw w/ metal cutting blade

Answer 9

best for forcing an inward swinging metal door set in a metal frame

Question 10

softening the building

Answer 10

forcing a door as long as it is in line with the IAP and does not change the ventilation profile

Question 11

most common method of cutting a role up door

Answer 11

large triangular cut a Teepee cut in the center of the door

Question 12

window size up

Answer 12

type of window
type of glass
type of frame or case
type of locking/ latch
type of security device

Question 13

break window with ax

Answer 13

use flat side

Question 14

rotary saw w/ medium carbide tip

Answer 14

most effective when making entry through all types of plastic windows

Question 15

breaching walls

Answer 15

most important to know the building through pre incident planning

Question 16

metal wall breach

Answer 16

rotary saw

Question 17

primary search priorities

Answer 17

most severely threatened
largest numbers
remainder of hazard zone
exposures

Question 18

primary search tools

Answer 18

portable radio
handlight
forcible entry tools
thermal imaging camera
marking devices

Question 19

outward opening doors

Answer 19

firefighters should stay on the hinge side so the door can provide some protection if flames and heat erupt

Question 20

most critical search areas

Answer 20

fire floor
floor directly above fire
topmost floor

Question 21

tactical ventilation

Answer 21

reduces chance of rollover,flashover,backdraft

Question 22

once ventilation is needed

Answer 22

coordinate vent ops with rescue and fire attack. this involves timing, location, and method

Question 23

horizontal vent considerations

Answer 23

location of fire
wind direction and speed
location of vent opening

Question 24

before forcing a door

Answer 24

try before you pry

Question 25

smoke ejectors

Answer 25

use caution, some can ignite certain combustible gas

Question 26

fog stream vent

Answer 26

capable of removing 2-4 times for smoke depending on size and type of nozzle, angle of spray pattern, location of nozzle in relation to vent opening

Question 27

fog vent stream

Answer 27

not exceed 60 degrees, it will loose efficiency at greater angles

Question 28

Disadvantages w/ hydraulic vent

Answer 28

increase in water damage
drain on water supply
in subfreeze temps additional ice may form
nozzle operator must remain in hostile environment
operation may be interrupted each time operator runs out of breathing air

Question 29

when FF on roof

Answer 29

it should be laddered on all sides if resources allow. 2 minimum

Question 30

factors to consider for roof ops

Answer 30

sagging roof
roof vents that appear to be tall
large puddles of water
smoke or fire coming vents
heavy dead load
drop offs
solar panels

Question 31

vent hole

Answer 31

4x4 may need to be larger

Question 32

stack effect

Answer 32

natural vertical movement of heat and smoke (convection) in tall structures. Because of differences in the density of the air inside and outside of these buildings the heat and smoke rise as if in a stack

Question 33

mushroom effect

Answer 33

when smoke and heat rise until they no longer can

Question 34

stratification

Answer 34

can occur near top of the building or several floors below. form smoke into layers. This can cause a toxic atmosphere many floors above the fire even where little heat

Question 35

PPV blowers at street level

Answer 35

effective up to about 22 floors

Question 36

horizontal vent on fire floor

Answer 36

only done if there is no other choice

Question 37

auto roof vents

Answer 37

intended to limit the spread of fire by releasing smoke and heat to the outside before the mushroom effect happens.

Question 38

curtain boards or draft curtains

Answer 38

fire resistive half walls. extend down from underside of roof. extend a distance equal to at least 20% of vertical distance from floor to roof but not lower than 10 ft above the floor.

Question 39

curtain board areas

Answer 39

usually containing critical industrial processes or concentrations of flammable liquids or other hazmats with high fire potential