Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
Size-up begins |
Proper size-up begins from the moment the alarm is received, and it continues until the emergency is under control. |
|
|
What is size-up? |
Information-gathering process. |
|
|
Possible collapse |
If a building of brick and wood joist or wood frame of standard construction, not lightweight, has been exposed to heavy fire for 20 minutes or more, it may be too dangerous to enter due to potential collapse. |
|
|
COAL WAS WEALTH |
13 point outline of factors affecting size-up C - Construction O - Occupancy A - Apparatus and manpower L - Life Hazards
W - Water Supply A - Auxiliary appliances S - Street conditions
W- Weather E - Exposures A - Area and Height L - Location and extent of fire T - Time H - Hazmat |
|
|
Life Hazards |
Them and us. Several other factors help us determine the life hazards including time of day, occupancy, location, and extent of fire.
A careful evaluation of the civilian life hazard should be made before deciding to put firefighters' lives at risk. A key component of this evaluation is building occupancy. |
|
|
Occupancy |
The occupancy has a considerable bearing on the extent of the life hazard, and this is dependent on the time of day. The life hazards associated with schools for example, vary greatly with the time of day while other occupancies suck has hospitals, apartments, etc, pose a high life hazard around the clock. |
|
|
When should we undertake aggressive tactics? |
Only in response to high civilian life hazard that we should be undertaking aggressive tactics. |
|
|
Civilian fire deaths |
According to a study in between the years of 96 and 2000. Nearly 80% of all civilian fire deaths occur in residential buildings, more than 3,000 people per year, thus justifying aggressive tactics in these buildings. Conversely, very few civilians die in fires in commercial buildings, In fact, more civilians die each year in car fires than die in store fires. |
|
|
Time |
The time of day, coupled with the occupancy and location and extent of the fire actually produces the life hazard. |
|
|
Fire that is venting out windows on two floors typically indicates one of the following two things: |
Prolonged burning of greater than 10 minutes, or use of accelerant to spread fire rapidly to both floors. Both are dangerous situations that should cause the attack forces to proceed cautiously. |
|
|
The air bottle rule |
A full 30 min air cylinder usually only lasts 15 to 20 minutes under heavy firefighting. A chief might continue with an aggressive attack until the first due units started to come out of the building with their air supplies depleted. If the fire was still not showing signs of being under control or at least knocked down, the ringing mask alarm bells acted as another type of alarm, sending the chief a message that he ought to think about pulling his people out of harm's way.
Only valid in standard wood frame or brick and wood joist buildings. |
|
|
lightweight construction and wood trusses |
The 20 minute rule is too long to operate in any type of lightweight construction building! They have been proven to collapse in 5 mins of fire exposure. These structures should only be fought from defensive positions until the fire has been knocked down, vented, and lighting conditions permit a careful examination of the structural elements that are trying to fall down on top of us or out from under us. The same rule should apply to heavier wooden bowstring trusses, with the possibility of failing in as little as 8 minutes of fire exposure, and even seeming heavy steel trusses. Unprotected steel can be expected to fail in as little as 5 minutes in serious fire.
stopped on page 14 |
