SOP's 300 Flashcards
(163 cards)
1
Q
301.02 Recruits will be evaluated throughout their time in the Academy on the following Standards of Performance:
A
- Code of Conduct
- Initiative
- Appearance
- Communication,
Teamwork and
Interpersonal Skills - Safety Practices
- Written Tests
- Fitness Level
- Fireground Tools
and Job Skills - EMS
2
Q
302.00 Thorough _________ and effective communication is absolutely critical to the overall success of the PFF
A
documentation
3
Q
302.00 Three probationary evaluations are used to evaluate each probationary firefighter during the ___, _____, and _____ month of probation
A
fourth, eighth and twelfth
4
Q
302.00 Scheduling and administering the 3 probationary written and skill test evaluations are done by the …
A
Training Academy
*PFF must pass all written tests with a score of 80%
5
Q
302.00 the company officer will Give the PFF a progress report (this is not a City Performance Appraisal) at the end of each ____ at their station. A copy will be placed in the PFF’s hard copy file, one will be saved electronically
A
month
6
Q
302.00 When the PFF moves to their next rotation, it is imperative that the Captain contact ________ and share any accolades or concerns with the PFF performance
A
their new supervisor
7
Q
303.00 ___ _______ is the skill and ability to control the depletion of an air supply to achieve the longest possible duration and provide the best opportunity for survival in the event of an emergency
A
Air management
8
Q
303.00 ____ __ ___ ______, which states, “Know how much air is in your SCBA, and manage that air so that you leave the IDLH environment BEFORE your low air warning alarm activates.” Put simply, air equals time
A
Rule of Air Management (ROAM)
9
Q
303.00 Rotation of tasks within a crew will _____ the duration of their air supply
A
lengthen
10
Q
303.00 5 key aspects of air management:
A
- Begin w/full bottle
- Always know
amount of air left
in bottle - Self awareness
- Knowledge of
SCBA - Psych control,
ability to control
breathing rate.
11
Q
303.00 This technique is to take a short breath, hold, take a second short breath before exhaling, and then relax with a long exhale. Each breath should take 5 seconds…
A
Skip breathing
12
Q
303.00 MFMD use the __________ SCBA
A
Scott Air-Pak X3 Snap-Change
13
Q
303.00 ____ ___ _____ consists of an aluminum alloy inner shell which is wrapped with layers’ carbon fiber, fiberglass and epoxy resin
A
Scott air cylinder
14
Q
303.00 The cylinder is rated for 45 minutes and when pressurized to 4500 PSI contains ______ of air
A
66 cu/ft (1835 liters)
15
Q
303.00 The cylinder must be hydrostatically tested every years with the date of the last test indicated on the cylinder
A
5
*Hydro static test date above Scott logo (mm/yr)
16
Q
303.00 The back frame mounted pressure reducer assembly reduces the air pressure from the cylinder pressure down to _____ PSI. The pressure reducer assembly is a redundant (dual) path reducing system
A
110-160 psi
17
Q
303.00 The Rapid Intervention Crew Universal Air Connection (UAC) is located on the ____side of the pressure reducer assembly and permits emergency replenishment of a SCBA air
A
left
*The RIC UAC is for emergency use only
18
Q
303.00 The Emergency Breathing Support System (EBSS) dual manifold hose assembly is located on the ____ side waist belt and attaches to the pressure reducer assembly
A
right
*consists of a hose approximately 3 feet long with a manifold containing both male and female fittings
19
Q
303.00 The regulator maintains this positive pressure during flows up to ___ LPM
A
500 lpm
20
Q
303.00 The regulator is also equipped with a red purge valve knob on the ___ side of the regulator
A
left
21
Q
303.00 The breathing regulator is connected by a low pressure hose that is threaded through the left shoulder strap and attached to the pressure reducer mounted on the back frame. This low pressure hose has a “quick disconnect” coupling approximately ___ from the regulator
A
18 inches
22
Q
303.00 Mesa Fire Department utilizes both Scott EZ-Flo and EZ-FLO II regulators. Although functionally the same the EZ-Flo II claims to have __ less expiration resistance than the EZ-Flo
A
25%
23
Q
303.00 MFMD uses AV-3000 HT (___ ______) face piece
A
High Temperature
24
Q
303.00 The PASS device requires six (6) ___ batteries located on the lower right hand side near the reducer
A
“AA”
25
303.00 . If the PASS sensor module does not sense motion of the respirator for 20 seconds the PASS device will signal a pre-alarm. If there is still no motion of the respirator for ___ seconds the full alarm will sound
12
26
303.00 The PASS device cannot be ____ __ if the respirator cylinder valve is open and/or pressure remains in the respirator
turned off
27
303.00 As the batteries begin to approach the end of their useful life (use #3 Phillips), the sensor module will begin to sound a chirp approximately every ___ ______ and the green lights on the control console and back frame will go out
two seconds
28
303.00 TRUE OR FALSE Removal or replacement of batteries while the system is pressurized may damage electronic components
TRUE
*Do not mix batteries
29
303.00 Use only ______ Alkaline E93 or EN93, or _____ Alkaline MN1400, MX1400 or PC1400 batteries
Eveready
Duracell
30
303.00 _____ may occur while the radio is transmitting if the firefighter wearing the PASS device is in close proximity to a base station or high-powered vehicle mounted radio, or if the antenna of a portable hand held radio is touching or within six inches of the control console, cables or sensor module of the PASS device
RFI Radio Frequency Interference
31
303.00 the rectangular indicator lights will show the level of the air supply as follows:
```
2 green lights FULL
1 single green 3/4
1 yellow flashing 1/2
(once/second)
1 flashing red 1/4
(10 times/sec)
```
32
303.00 When Inspecting the inside of the regulator assembly through the regulator opening. If dirt or soil is present, forward regulator to _____ ______ for thorough cleaning
Resource Management
33
303.00 If regulator is clean, depress the air saver/donning switch, close the purge knob by turning clockwise
and spray a minimum of __ ___ ____ of Scott Multi-Wash Mini into the regulator opening. Make sure to also wet the immediate area around the opening. Swirl to completely cover internal components. Turn regulator-opening face down and shake excess liquid out. Allow ___ minutes of contact time to disinfect prior to rinsing
6 full pumps
10 minutes
*Rinse regulator with drinking water using a spray bottle or softly running water. DO NOT
SUBMERGE REGULATOR
34
303.00 Cleaning the face piece...spraying 3 full pumps of Scott Multi-Wash Mini on the regulator side of mask and 3 full pumps on the face side of the mask, wetting the entire mask including all rubber and plastic areas. Allow a 10-minute contact time to disinfect prior to rinsing, then...
Rinse with drinking water, shake excess water off and dry with clean lint free cloth or blow dry with breathing air of 30 psi or less. Place in pouch
*The Kevlar head harness is made of porous material. Scott Multi-Wash Mini may not be effective on porous material
35
303.00 The RIC UAC is for emergency use only when the SCBA user is incapacitated within the hazardous atmosphere, The air from the supply cylinder will stop flowing when the pressure in the down firefighter’s cylinder is ____ to the pressure in the supply cylinder
equal
36
303.00 When the EBSS dual manifold hoses connect two SCBA’s and the SCBA of the firefighter requiring support has activated its Vibralert, the Vibralert on the SCBA of the firefighter giving support will ....
also be activated
*The dual manifold hose can emit 160 PSI of compressed air if the check valve sleeve on the male quick disconnect is retracted
37
303.00 Fill Station/Training...Whenever the monitor sees a system pressure of ____ PSI, it will put the compressor into a COOL AND PURGE mode. It will run the compressor unloaded for two minutes, purge all the moisture separators and turn off the motor, shutting down the compressor
5500 psi
38
304.01 Cutting with the top bar of the chainsaw may result in ....
Kick back
*chain brakes help to prevent this, brake engages within 1/10 of a second
39
304.01 An advantage of the chainsaw is the operator's ability to _____ the work
"feel"
40
304.01 When a structural member is encountered, the operator should lift the chainsaw nearly out of the work and continue over the top of the structural member. This maneuver is called ...
Rolling
41
304.01 Fueling a chainsaw ...Use two packets of AMSOIL two stroke oil to one gallon of regular gasoline. This creates a mixture of approximately ...
50:1
42
304.01 Saws with automatic oilers should be adjusted for maximum oiling. Manual oilers should be depressed a minimum of once every ___seconds under light conditions
10 seconds
43
304.01 Dull chains should be replaced when a radius on the cutting edge is visible to the naked eye or if you find ....
three broken tips in a row or six total in the chain
44
304.01 _____ _____ chains used by this Department are resistive to dulling but subject to chipping. Cutting into materials other than wood or composition roof coverings should be avoided
Carbide tipped
45
304.02 Circular saw...MFMD currently use the ____ ____ as our 14” circular saw
Stihl TS700
46
304.02 When the cutter disc is brought into contact with the material to be cut, the engine is run at ____speed then gradually increased as the disc cuts into the material. This provides guidance for the disc
low
47
304.02 . If the cutter disc burns or causes burrs around the cut, this may be due to
1. disc not being fed fast enough through material
2. Insufficient cutting pressure
3. Drive belt slipping
48
304.02 When using the carbide blade, run the machine to almost ___ ____, then bring the blade into contact with the material to be cut.
full throttle
49
304.02 Stopping the blade using an 8x8x16 concrete block _____________ the metal diamond blade used by MFMD
sharpens/refreshes
50
304.02 fuel oil/mixture.....Use two packets of AMSOIL two
stroke oil to one gallon of regular gasoline. This creates a mixture of approximately 50:1
Use STIHL oil, _____ to one gallon of gasoline
1 bottle
51
304.02 Prime the fuel on circular saw, push ___ times, even when the fuel priming bulb is full
7-10 times
*Depress the decompression button before each start attempt
52
304.02 Stihl TS700 has a ____ arbor. Extreme care should be taken when replacing the blades on these saws. Make sure the arbor spacer is on the shaft in the correct position
7/8-inch
53
304.03 MFMD uses two size smoke ejectors ___" and ___". Both are 5.5HP and 4 cycle motors
18" and 21"
54
304.03 The 18" smoke ejector is rated at _______ CFM with a 4 blade composite fan blade. (Engines)
14,800 CFM
*This fan weights 75lbs
55
304.03 The 21" smoke ejector is rate at ______ CFM with a wood propeller (Ladders)
21,150 CFM
*This fan weighs 90lbs
56
304.03 MFMD smoke ejectors use AMSOIL __W -__ oil in crank case.
0w-40
*The oil Alert System will automatically stop the engine before the oil level falls below the safe limit
57
304.03 For long stops with the smoke ejectors, turn the fuel cock to OFF and let the engine run until the fuel in the carburetor ....
gives out stopping the engine
58
304.04 Holmatro 27" Spreader stats...
27" Spreader
Max spreading force 23,000 lbs
Max pulling force 14,000 lbs
Squeeze force at tips 9,700 lbs
Special cutting tips cut sheet metal
(max thickness 4mm - 5/32 inch)
59
304.04 Holmatro 5" Cutter stats...
```
2001U 5" Cutter
Working pressure 10,500 psi
Cutting force of 63,400 lbs in recess
and 41,000 lbs in blade center (can cut
solid steel bar w/diameter of 1")
```
Tool weighs 27 1/2lbs
60
304.04 Holmatro twin plunger RAM stats...
Push power of 22,400 lbs
Pull power of 11,200 lbs
Collapse length 27.5 in Extended 43 3/8 in
Tool weights 36.5 lbs
61
304.05 The ____ ____ ____ is a pneumatic air hammer with alloy steel chisels used for cutting metal quickly
Ajax rescue tool
62
304.05 The regulator for Ajax has a safety blow off of above ___ PSI and is designed for use with 4500 psi air tanks.
325 PSI
*Turn regulator clockwise to increase pressure and counterclockwise to decrease
63
304.05 The standard hose in the kit is a 15 foot, heavy-duty, double braided hose with a bursting pressure of ___ PSI
1000 PSI
64
304.05 The proper pressures to operate the ajax is 90 PSI for normal auto body metal. Heavier metals such as door locks, nader pins, door hinges, etc. require higher pressures 150 to 160 PSI. Maximum pressure should never exceed ___ psi
300 PSI
65
304.07 A ____ ____ ____ is a device that translates a thermal picture into an electrical picture and then a visual image for the human eye
Thermal Imaging Camera (TIC)
*Thermal energy is characterized by its long wavelength.
**White - hot
Black/Gray - Cold
66
304.07 Thermal Imaging Camera allows a ___ dimensional view of a smoke filled environment
two
67
304.07 Walking with the Imager is _______ in low visibility conditions as trip hazards may be overlooked
discouraged
68
304.07 Water, plastic and glass are all effective barriers for the Imager and may cause
a reflective image
69
"____ ____" is a condition caused by aiming the unit at a very hot object or flame, which may cause the Imager’s sensor to become overloaded and the display to show all white, rendering the Imager useless
White Out
* To correct the problem, aim the Imager away from the extreme heat source and the display should return to normal
70
304.08 Exposure to heat of approximately ___ degrees can begin irreparable changes that can lead to a loss of structural integrity for an aluminum ladder.
300 F
71
304.08 Advantages of aluminum ladders over wood:
• Greater strength
• Lighter weight
• Does not require refinishing
• Aluminum ladders will not fail suddenly
under overloads
• Aluminum, unlike wood, will not undergo
fatigue with age
• Better resistance to bruises, moisture,
etc., a longer life expectancy
72
304.09 Do not move the heel of the ladder to reposition it until the ladder _____ has been properly secured with the Bangor knot or clove hitch
halyard
*fly out (away from building) position. This is in compliance with manufacturer recommendations and NFPA Standard 1932
73
304.09 To maintain the proper load when climbing a ladder, it is recommended that firefighters space themselves at least ___feet apart on the ladder
10 ft
74
304.10 When a working hose line is being used up a ladder, hose straps should be placed every ___ feet with one at the top of the ladder, or use a leg lock
ten ft
75
304.10 Each ladder must be visually inspected once each ____ and after every use. This inspection should include an examination of all rungs, beams, butt spurs, bolts, rivets and welds
month
76
304.11 The Mesa Fire and Medical Department uses a 10’ folding ladder as the “______” ladder for attic access. The ladder has 14" rung centers with an opening width of 12 3/4".
scissor
77
304.12 MFMD uses 14" and 16" straight ladders on apparatus....the 14' is carried on ____ and the 16' is carried on ______.
Engines
Ladders
78
304.13 Ropes have to main classifications:
Natural and Synthetic
79
304.13 The preferred material for Mesa Fire and Medical Department rope is ...
nylon
80
304.13 The utility rope is 100’ of ____ ____ ____ rope that is not to be used for any life safety application
three stranded nylon
*Laid (twisted) rope is utility rope, Easy to inspect
81
304.13 The lifeline is 100’ of __ ______ ____ rope that has a one-time use and will then be returned to resource to be destroyed
½” Kernmantle (nylon)
* life lines should never have more than two persons placed on them or exceed 600 pounds
82
304.13 ______ is a jacketed synthetic rope with a braided covering (mantle) over a core (kern) of the main load bearing strands
Kernmantle
*This rope is difficult to inspect
83
304.13 The core of Kernmantle is made of high strength nylon fibers that account for percent of the total strength of the rope
75%
84
304.13 Ropes are either _____ or _____ in type/
Static or dynamic
85
304.13 Static rope has little give with __-__% stretch while loaded. Dynamic ropes are made to stretch as much as 20%.
2-4%
86
304.13 Mesa Fire and Medical Department uses _____ rope for its operations
static
87
304.13 the preferred MFMD lifeline rope is ____ ________ (nylon) and the preferred MFMD utility rope is static three-stranded nylon
static kernmantle
88
304.13 Rope strength....Breaking strength is
Load required to produce failure
89
304.13 Rope strength...Working strength is
Load required during normal use.
90
304.13 Knots, sharp bends, and angles all ______ overall rope strength during usage
weaken
*bowline & right angle bend 50%
Figure 8 bite 40%
rope to form loop 20%
Eye splice w/carabineer 0
91
304.13 A sudden applied load or surging, can reduce the strength of rope as well as permanently damage the rope...this is called
Shock loading
92
304.14 . Never expose rope to _______ products
petroleum
*Contact with iron should not be permitted
93
304.14 New rope should be uncoiled from the center of the coil in a _____________ direction
counterclockwise
94
304.14 If rope has become excessively dirty it may be washed in a machine with a mild detergent on the ____ water setting. Daisy chain the rope (electrician loop) so the rope does not get tangled in the machine during operation
cold
*Never machine dry rope or place it in the sun for drying
95
304.14 Lifelines and utility lines shall be coiled and stored in plastic buckets with ______ ____ lids.
moisture tight
96
304.15 The three bends that a rope undergoes in the formation of a knot or hitch are known as the
bight
loop
round turn
97
304.15 The part of the rope that is to be used in forming the knot ..
Working end
98
304.15 That part of rope between the working end and the running part
Standing part
99
304.15 The part of the rope that is to be used for work such as hoisting, pulling, or belaying
Running part
100
304.15 End part of the rope
Tail
101
304.15 The slow and even tightening of a knot
Drawing up
102
304.15 The five basic fire service knots...
1. Clove hitch
2. Bowline
3. Becket bend
4. Figure 8
5. Rescue knot
103
304.16 A , portable inflation tool used to lift and displace heavy rigid objects, (up to 146,000 pounds), and require less than 1 inch of bag insertion clearance
Air bags
*Total capable lift (utilizing two stacked air bags, (larger bag on the bottom) is 40 inches (100 centimeters)
104
304.16 Air bag Inflation may be obtained from any air source (SCBA, air compressor, etc.) capable of supplying ___ psi
118 psi
*118 psi is full inflation
105
304.16 Each air bag has been tested at ____ the full inflation pressure (236 psi) and has a minimum burst pressure of four times the operating (472 psi) pressure
twice
106
304.16 Air bag high pressure regulators reduce inlet pressure of up to ____ psi to 135 psi
5,500
107
304.16 Air bag hoses are rated at ___ psi working pressure and are available in multiple lengths, and color for identifying which air bag is in use
300
108
304.16 Air bags should be replaced every __ years. The first 2 numbers of the serial number designate the production date
10 yrs
109
305.05 “Appliances” include reducers, wyes, Siamese connections, manifolds, aerial apparatus, and standpipe systems
FYI
*10 PSI loss for each appliance in a hose assembly when flowing 350 GPM or more (except for master stream appliances).
110
305.05 Calculate ___ PSI friction loss in all aerial apparatus and standpipe systems, regardless of GPM
25
111
305.05 Pre-plumbed and portable eductors require ___ PSI pump discharge pressure (PDP) to operate correctly
200 psi
*PDP should not exceed 200 psi during pump operations
112
305.06 Back pressure is pressure loss due to ______ gain. Forward pressure is pressure gain due to elevation loss
Elevation
113
305.07 When supplying a sprinkler system FDC or standpipe system, attempt to position the engine ___ ft from the building for a safety zone
200’ ft
114
305.09 A perfect vacuum provides 14.7 psi of ______ pressure at sea level or 30 inches of vacuum
negative
115
305.09 A fire apparatus primer should be able to develop ___ inches of vacuum in 30 seconds
22 inches
116
305.09 The maximum practical lift for fireground drafting operations is ___ feet
20 ft
117
306.05 The supply hose bed is flat loaded with 1050' of 5" hose. There are (10) 100’ sections of yellow 5” supply hose and (1) 50’ section of red supply hose. The red supply hose is to be used when pumping a...
humat valve
118
306.03 - It is recommended in this SOP that the front attack bed be a length of ...
150’ft
119
306.06 The laying of a single line (2 1/2" or 5") from a water source (hydrant), to supply an apparatus or appliance is known as...
Forward hose lay
120
306.07 The laying of a single line (2 1/2" or 5") from a fire, apparatus, or appliance, to a water source (hydrant) is known as...
Reverse hose lay
*Double reverse uses (2) 2 1/2 inch lines
121
306.13 Crosslays 1, 2, 3, front bumper, attack packs all use ______ nozzles
SM20-FLP
*2 1/2 lines use SM30
122
306.13 All CAFS lines and attack packs will have a ____ slug attached to their nozzles for proper CAFS application
15/16”
123
307.01/307.02 For minimum company standards, each crew will be responsible for completing...
1) Two- three minimum company operation evolutions.
| 2) Any skill or evolution requested by the Battalion Chief
124
307.01/307.02 PCAAN reports must include with a P.A.R:
```
A. Position
B. Condition
C. Actions
D. Air
E. Needs
```
125
308.02 - This type of construction utilizes heavy dimension lumber and large support members. Rafters and joists are usually 2 x 6 or larger. Decking is usually 1 x 6 set perpendicular or diagonal to rafters
Conventional
*most often found in pre-1960 buildings
126
308.03 "A" frame configuration. Conventional construction consists of a ridge board, rafters extending from the ridge, board down to and across the outside walls, and joists which form the ceiling
Gable roof
*are usually 2 x 6 or larger lumber size. Rafters are usually 16 inches to 24 inches on center.
127
308.04 Similar to the gable roof, but has a modified "A" frame configuration. The ends of the roof terminate in a "hip" configuration
Hip roof
128
308.05 Corrugated covering may be steel, aluminum, or fiberglass over a metal or wood frame. 18 or 20 gauge corrugated steel is usually used
Corrugated roof
*Expect RAPID FAILURE of this roof when exposed to heat or fire. Extremely hazardous for ventilation
129
308.06 Steel or wood sub-structure covered with corrugated metal "Robertson Decking". An air-entrained mixture of sand, cement, and, occasionally, pea gravel is pumped on top of the metal decking to a depth of 3 - 4 inches
Lightweight concrete non structural
*composition roofing is utilized as the final, waterproof layer
Difficult to penetrate for ventilation, consider rotary saw with masonry blade!
130
308.07 Constructed in commercial applications to yield additional light and ventilation. Constructed with rafters of 2 x 6 or larger lumber size. Roof is constructed in semi-flat to steep pitches. Vertical portion is usually wired glass with openable panes
Saw tooth roof
131
308.08 Wooden truss members constructed from 2 x 12 lumber with sloping ends. Usually a heavy grade of construction. Metal tie rods may be used vertically for additional support
Bridge truss roof
*Metal tie rods will fail first when a truss is exposed to fire.
132
308.09 An arched roof with metal tie rods and turnbuckles which offer lateral support. Tie rods are used below each arch to support the outside walls. The tie rods will occasionally pass through the outside wall and anchor to steel plates. This will facilitate identification of the roof type
Bowstring arhced roof
*Tension is maintained by turnbuckles
133
308.10 Usually large size (2 x 12 or 2 x 14) wooden timbers utilized in the construction of this roof. Some arches incorporate multiple laminated beams to form one arch. Rafters of 2 x 10 or larger wood are covered with 1x sheathing
Ribbed arched roof
134
308.11 Egg-crate, geometric, or diamond patterned roof. This roof is commonly called a "Summerbell Roof" because it was most often constructed by the Summerbell Company
Lamella roof
*Many high school gymnasiums have this type of roof
fire removes more than 20% of roof structure. Collapse will occur at this point from the "domino effect
135
308.12 Wood joists or rafters of various sizes laid across the outside walls or from the outside walls to interior walls or interior structural supports.
Conventional flat roof
*very common roof found often on older 1940s-1960s homes and commercial
136
308.13 construction is currently very popular with architects and building contractors across the country. by 2 x 4's and 1/2" plywood decking regardless of the building size. This trend has caused fire departments to lose their most valuable asset: TIME!
Lightweight roof construction
137
308. 14 This roof may be found on structures constructed of wood, masonry, or concrete tilt-up slabs. It consists of four major components:
1. Laminated beams
2. Purlins
3. 2 x 4 joists
4. ½” or 5/8” plywood decking
Panelized roof construction
*use pull back method for ventilation
138
308.15 consists of bottom and top parallel wooden supporting beams called chords. These chords are cross-connected by steel tube web members. The top chord is supported and, when loaded, is under compression. The load is transferred to the bottom chord which is unsupported. The bottom chord is in tension
Open web construction
* Open web is prefabricated at the factory and delivered to the job site
* a very hazardous roof for firefighting ventilation
139
308.15 Open web ...The top chord is supported and, when loaded, is under ______. The load is transferred to the bottom chord which is unsupported. The bottom chord is in _____.
compression
tension
140
308.16 construction utilizes that popular building material (metal) in a wide variety of buildings, large and small. Joists are spaced eight-feet apart to accept a plywood decking. Corrugated metal is a common decking material
Open web bar joist
*ventilation difficult due to roof decking
141
308. 17 This roof consists of three main components:
1. Top chord
2. Bottom chord
3. 3/8" plywood stem
Wooden I beam
142
308.17 the laminations run horizontally in the chords. The trade name for this type chord is
MicroLam
* MicroLam chords are stronger than solid sawn lumber
* roofs are very unstable, can be used in floors
143
308.18 composed of top chords, bottom chords, and webbing (supports running between the top and bottom chords). All members of the truss are held together by metal gusset plates which vary in size, thickness and depth of penetration. Gussets are typically 18-gauge steel with prongs that penetrate the wood 3/8
Metal Gusset plate construction
* Common on-center spacing for these trusses is usually 2 feet
* shown failure of this type of roof in as little as one minute twenty seconds under heavy fire exposure
144
309.02 When laddering a building, loadders should extend __ or __ rungs above roof or parapet
5 or 6
145
309.04 The primary vertical ventilation opening is the "____ hole". This is the basis for offensive roof tactics
heat
*rule-of-thumb size for this hole is approximately 10% of the area of the involved room
146
309.04 The objective of vertical ventilation on a defensive fire is to get ahead of the fire and create "___ ____" in the roof. These breaks are known as strips or strip ventilation.
fire breaks
*main idea with strip ventilation is that it is always defensive; it must be supported by hose lines and a heat hole
147
309.06 All series of ventilation cuts should be made in the direction of...
the way off the roof
148
309.07 . Remove a stuck axe by using your foot as a _____ just behind the head
fulcrum
149
309.07 A wood or steel structural member which is fastened to or molded into the exterior wall of a structure is supported bya
Ledger plate
150
309.07 four types of lightweight construction
Panelized
Metal gusset plate
Open web
I beam
151
309.08 This hole is cut to determine the roof supporting structure when other means do not readily indicate the construction
Inspection hole
*first cut should be made at a 45-degree angle to the outside wall of the structure, 2nd cut 45 to 1st
152
309.09 This cut is most useful for roofs sheeted with plywood where a quick effective cut is desired. The direction and location of three rafters must be determined to complete the cut...
Center rafter cut
153
309.10 ______ is a quick and simple method of cutting roof sheathing that is composed of 1 x 6 lumber whether skipped (space) sheathed or solid sheathed. To dice a roof, no particular knowledge of rafter location is necessary although rafter direction must be known
Dice cut
154
309.11 This method of roof cutting is designed mainly for use on panelized roofs..
Pull back method
*working from purlins, and be progressing toward a lam beam
155
309.12 When laddering a panelized roof, ventilation team should ladder the building ___ft from the corner
8ft
156
309.13 _____ ventilation does not release heat from the highest point of the building, there is a constant danger that heated gases will ignite other parts of the involved building or the eaves of the exposed building
Horizontal
*Humidity also plays a role in horizontal ventilation
157
309.13 The side of the building the wind is blowing against is the windward side; the opposite side is the _____ side
leeward
158
309.13 , when there is no wind, ______ ventilation may not be very effective
horizontal
159
309.13 Proper technique to horizontal ventilation...
open the top windows or other openings on the leeward side of the building first. After allowing the superheated gases and smoke to escape, the lower windows or openings on the windward side should be opened
160
309.13 When breaking glass, the firefighter should stand to the side and break the glass with the flat side of the axe or tool. The handle of the tool should be held higher than ___ ____ to prevent glass from "sliding down the handle". The firefighter should not be positioned or allow anyone to be directly above, below or downwind of the window
the head
161
309.13 how to open windows constructed with plexiglass or other thermoplastics.
Carbide tipped blade on rotary saw
*Lexan is an example of a polycarbonate that has seen wide application as a glass substitute because of its ability to stand abuse from weather and vandalism
162
309.13 If a power saw is not available, entry might be made in one of two other ways
1. strike the pane with a sledge hammer in an attempt to dislodge the pane
2. use a sharp tool or the pick head of an axe to score an "x" across the pane. The "x" is then struck in the center of the "x" and the pane may break along the score marks.
163
309.14 PPV...blower/fan should be placed 6 feet from the opening and tilting the blower/fan back about __ to __ degrees to obtain the proper seal over the entire opening
20 to 30
