Handbook of Tactics Flashcards
13 point acronym of size-up is ________________.
Construction
Occupancy
Apparatus and Manpower
Life hazard
Water supply
Auxiliary appliances
Street conditions
Weather Exposures Area Location and extent of the fire Time Height
The most basic principle of firefighting is that _____________ takes precedence over all other concerns.
human life
Any occupancy that is subject to CADS hazard display should be __________________.
inspected annually.
The 20-min rule applies to ______________ and _______________, and only these two types of construction.
Class 3 - Ordinary Construction
Class 5 - Wood Frame
Class 2 (non-combustible), are the __________________ in terms of collapse when exposed to fire.
least stable
Class 3 (ordinary construction): this is how the majority of ______________ are made.
brick buildings
Class 3 ordinary construction consists of masonry or other noncombustible walls with a _______________.
2hr fire resistance rating.
Class 4 (heavy timber) interior columns, beams, and girders are ___________, and the floors and roofs are of _______________.
heavy timber (min 8x8), heavy planks (min 3x6)
In theory 1 gallon of water will provide sufficient cooling to quench approx _________ at the average rate of surface burning.
5lbs of fuel
Most residential rooms have a fire load of ______________.
5 lbs per sqft.
The method of attack most often used in the free burning stage is the ________________, which initially consists of sweeping the ceiling with the stream in a side-to-side or clockwise circular motion. This ceiling level attack is only done for __________ seconds.
combination method, 5-10
The _______________ violently disturbs the thermal balance , rendering this method unsuitable for interior firefighting in occupied buildings.
indirect method
Disadvantages of a combination attack include putting members within an extremely ____________, and that it requires ____________ to develop a high degree of proficiency.
hostile enviorment, live-fire training
Each gallon of water can expand to _____________ gallons of steam when fully vaporized.
1,500-2,000
Basic requirements for an indirect attack:
- __________ conditions throughout the area.
- Limited _________ of the fire area.
- A point on the perimeter in which to make a small opening for the injection of a _________ into the superheated atmosphere.
- High heat
- ventilation
- 30 degree fog pattern
4 Key requirements for an indirect attack:
- No __________
- _________ ventilation
- High _______
- Limited size of the _______________
- Occupants
- Limited
- heat
- potential fire area
**(NOT NEED SUFFICIENT VENTILATION)**
Disadvantages of the indirect attack method:
- It cannot be used in an ______________.
- The presence of ventilation openings will _______ the effect of the stream.
- A discharge of less than the ______________ can push fire ahead of the stream, an effect that may not be observed from the outside.
- It isn’t possible to view the interior layout until you have ____________ of the situation.
- Using the indirect method can increase ________________.
- occupied building
- dilute
- critical volume
- gained control
- water damage
In this day of modern breathing apparatus, what are the two only things that should prevent a hose-line’s advance?
- ______
- ______
- Heat
2. Flame
Water absorbs about _________ per gal when raised from ____ to completely vaporized.
9,725 BTU’s, 70*F
What are the 3 characteristics to selecting hose lines?
- Need for speed
- Relatively low fire loading
- Presence of dividing walls or partitions between rooms
The building’s __________, ___________, and ___________ from the street all serve to indicate the length of hoseline to use.
Height, Area and Setback
As a rule of thumb, what is maximum length of a preconnect if you want to flow 125 gpm?
4 lengths (200 feet) of 1 1/2” hose
As a rule of thumb, what is maximum length of a preconnect if you want to flow 150 gpm?
6 lengths of 1 3/4” hose
As a rule of thumb, what is maximum length of a preconnect if you want to flow 190 gpm?
6 lengths 2” hose
In deciding where to position the hoseline, remember the following priorities:
1.
2.
3.
- Protect human life
- Confine the fire
- Extinguish the fire
When making a decision about whether to commit the first line to interior operations or to act as an exposure protection line, a number of items must be considered.
- 2.
3.
- Extent of the fire
- Attack capability of the unit
- Regarding exposures: construction of the buildings, particularly the exterior siding.
Barring direct-flame contact, the most severe threat is from _________, which travels in straight lines.
radiant heat
___________ is the greatest protection from radiant heat.
Distance
3 things the nozzle does to water:
- ___________ the amount of water flowing past the opening from zero flow through wide open.
- It increases the ___________ of the water flowing through the hose.
- It gives the stream __________.
- Regulates
- velocity
- shape
No nozzle should have an opening greater than _____________ of its supply.
half the diameter
_________________ nozzles are usually designed to deliver a specified gallonage when the nozzle pressure is 100 psi.
Constant Gallonage
A new twist to the constant-flow nozzle that is en vogue is the _______________ nozzle.
low-pressure fog
Low-pressure fog nozzles deliver their rated flows at either ____ or ____ psi.
50 or 75 psi
As a rule of thumb, if one person can control a 1 3/4” or 2” handline, the __________________________.
line isnt delivering its designed flow.
What is an extremely expanded (400;1 up to 1,000:1 ratio) solution of water and detergeant?
High-Ex
Fog nozzles generally only cause a ____ or _____ expansion of most foam solutions.
2:1 or 3:1
What does CAFS stand for?
Commercial Compressed Air Foam System
For CAFS use, _________________ is usually used in a range of 0.3%-0.6%, or 3-6 gallons of concentrate for every 1,000 gallons of water used, as opposed to 3%-6% for ___________________.
Class A Concentrate, Class B Foams.
1 cubic foot of water weighs about ______ and is equal to about _____ gallons.
62.5 lbs, 7.5 gallons
The pressure in a confined body of water at rest is the ______________.
same at all points.
When and no-flow condition occurs in water mains, its referred to as _________ pressure.
static
The pressure of a fluid in an open container is proportional to its ______.
depth.
For every 1ft of height that the water rises, it exerts ______ psi of force which is known as _____________.
.434, Head pressure.
The pressure of water in an open container is independent of the _______ and _______ of the container and depends solely on the _______.
shape and volume, depth.
The weight of the air above us is equivalent to the pressure exerted by ____ ft of water or _______ psi.
33.9, 14.7 psi
When drafting from an open topped source, the _____________, actually pushes the water up through the suction hose to the intake of the pump.
weight of the air above us,
Pressure on a confined fluid is transmitted ________ throughout that fluid.
equally
The most common resistance to flow is __________, which results from the interaction of the water moving through the hose.
friction loss
At low flows, there is almost no turbulence, and all of the water molecules move along quite smoothly which is known as ____________.
Laminar flow.
Friction loss is also related to the ___________________- the larger the diameter of the hose, the less the __________ for the same flow.
Diameter of the hose, friction loss.
Low residual pressures are most commonly encountered when ______________ is used with 2 1/2” or 3” hose as supply lines.
in-line pumping
All Class A pumpers discharge their maximum flow at ____ psi.
150
Standard Class A pumpers are rated to deliver their maximum volume of water at ____ psi, 70% at ____ psi and only 50% at _____ psi.
150 psi, 200 psi, 250 psi
Solid tips only require ___ psi nozzle pressure for master streams vs. ___ psi for a fog tip
80 psi, 100 psi
A standard sprinkler operating at 100 psi flow is discharging _______ gpm, the same flow as 1 1/2” Navy fog nozzle.
55-60 gpm
What 3 factors remove the fresh air layer often seen at sprinkler fires?
- increased CO
- sinking fire gases
- smoke being pushed down
The ______________ system consists of an automatic detection system coupled to an automatic dry-pipe system.
pre-action sprinkler
Pre-action systems are often installed over very expensive ____________ that could be damaged by a water leak.
electronic equipment
what system involved perforated piping running along the ceiling of cellars and out to a siamese connection at the street level?
Non-automatic system
What is the most common type of sprinkler control?
OS&Y
Manual dry standpipe systems are often found in ______________, where they are subject to vandalism.
public parking garages
Where freezing weather makes the installation of wet standpipes impractical, a better alternative to the normal dry standpipe is the __________________, which has a deluge-type valve connected to a set of _________________ at each hose station.
semiautomatic dry system, manual pull boxes
What standpipe is not desirable from a fire dept point of view secondary to the need to bleed the pressurized air out through the nozzle?
Automatic dry standpipe
What standpipe system is designed for building occupants to control minor fires until the fire dept arrives and are provided with 1 1/2” hose with with either an open tip or fog nozzle?
Class II standpipe system
What standpipe system is designed to allow a dept to use heavy hose streams as well as provide first-aid hose for occupant use prior to the arrival of the dept.
Class III standpipe system
NFPA 14 permits up to _____ psi at 2 1/2” outlets but still allow ____ psi as the min pressure.
175 psi, 100 psi