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Flashcards in Ch. 2 Size-Up Deck (32):
1

2 forms of Life Hazard

Them and us

2

4 ways CADS data transmitted to field (about occupancies)

Dispatcher reads it as part of alert message
Flash the message on video display
Teletype it to each unit
Have message repeated over radio 1 minute after initial alarm

* 3 & 4 best possible choices *

3

Time has many impacts. Name 3.

Time of day
Time of year - effect of holiday season
Elapsed time since fire has begun - elapsed burn time=key indicator of likelihood of structural collapse

4

What produces life hazard (mathematical style formula)

Time of day + occupancy + location/extent of fire = life hazard

5

Estimating time after flashover (for start of 20 min. rule for class 3 and 5 ordinary construction) using view venting through window

1. Not vented from a single window
2. Not vented or only vented from 1 or 2 windows
3. Venting from Windows on 2 FLOORS

1. Under a minute or two
2. Anywhere from 1 to 5 minutes
3. Greater than 10 minutes OR
Use of an accelerant

6

The most important decision you will make as IC?

Order out interior crews

7

Construction has 5 implications/concerns

First, compartmentation
Second, building itself contributes to fire load
Third, number of hidden voids - responsible for destruction more than any other
Fourth, ability of building to resist collapse - most important to firefighters
Finally, water added and point of overload for materials

8

NFPA 220 uses type of construction with _____________ and _________ to describe the required fire resistance rating for select structural elements.

Roman numeral designation, Arabic numeral subsets (RA)

9

5 classes of construction (H.O.T.)

Class 1 - Fire resistive (fireproof)
Class 2 - Noncombustible
Class 3 - Ordinary Construction
Class 4 - Heavy Timber
Class 5 - Wood frame

10

Buildings OVER ____ stories or ______ feet must be built of Class 1 construction.

6 stories, 75 feet

11

Frontage of a building is important because: (3)

Attack begins in the front.
Provides opportunities for horizontal ventilation.
Frontage indicates Width and Depth of the structure (not always the case).

12

The ______ the fire is in a building, the _______ the hazard.

lower, more serious

13

Fires below grade are especially problematic because: (2)

Lack of opportunities for horizontal ventilation. Entire operation, from entry through attack and even relief, must be performed in this atmosphere, limiting members work time.

14

Size-up 13-point outline

COAL WAS WEALTH.
Construction
Occupancy
Apparatus/personnel
Life hazard
Water supply
Auxiliary appliances
Street conditions
Weather
Exposures
Area + height
Location/extent
Time
Hazmat

15

Three locations that create "special" firefighting problems:

Top floor of most ordinary brick and wood.
Below grade.
Any place where fire is above the reach of ladders for exterior vent and access.

16

Determining the extent of fire: Items to evaluate quickly are:

Location of smoke and flame.
Color and movement of smoke.

17

If all floors above are pushing heavy smoke with no visible fire, expect it to be in the _______.

Cellar

18

What is the 20-minute rule or air bottle rule?

For class 3 and 5, aggressive attack until first due units deplete their bottles

19

Reports from IC when a change in the incident is good for:

Allow superior officers to monitor conditions in their office.
Units responding to multiple alarms are alerted to potential problems

20

These building components are noncombustible in both class 1 and 2 (class 2 less fire resistance than class 1)

WPCFR.
Walls
Partitions
Columns
Floors
Roofs

21

Large volumes of black smoke at roof

Roofing materials

22

Light smoke at roof

Defective oil burner

23

Light to moderate black smoke in basements

Oil burner malfunction
*signal to bring Class B extinguisher*

24

Gray to light brown smoke

Common Class A materials

25

P. 27
Six sides of fire area

FRLRTB
Front
Rear
Left
Right
Top
Bottom

26

May be possible to move the exposure hazard

Truck and railcars are both possible candidates

27

Most residential rooms have a fire load of _______. Libraries have a loading of ___________.

5 lbs of fuel per sq ft.
25-30 lbs of combustible per sq ft

28

Tests determined flows of ______ for each ______ of fire area are sufficient to control fire for light loads of ordinary combustibles.

10 gpm.
100 sq ft

29

In today's plastic based society, application rates increase by 50%, so residential flows of ________ per 100 sq ft, commercial flows of ______ and industrial and heavily loaded storage area of _______ per 100 sq ft.

15 resid.
35 comm'l.
50-60 indust/storage

30

Officer opts for "fast knockdown", which means _____________.

Using a preconnected deck gun or other fast-acting master stream.

31

Difference in Class 3 vs 4 (p. 22)

Class 3 - consists of masonry or other noncombustible walls with 2 hr fire-resistance rating
Class 4 - EXTERIOR WALLS of these buildings are of masonry or some other noncombustible material with AT LEAST a 2 hr fire resistance rating

32

An out of service auxiliary appliance is often ________________.

Justification for an extra alarm.