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firefighter procedures > Taxpayers > Flashcards

Taxpayers Flashcards

1
Q

Are walls designed to withstand severe lateral loads?

A

Walls are NOT usually designed to withstand severe lateral loads
Glossary

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2
Q

Most common dimension of Taxpayer

A

100’ X 100’ Ch 2

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3
Q

Most prevalent type of TP

A

Built from 1920’s to 1960’s.

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4
Q

Which type of TP allow for cornices to be removed to provide access to cockloft areas?

A

Older type built turn of century to 1920’s. Heavy fire in the front of the bldg, the supports of these cornices can be weakened and the cornice can fall to the ground unexpectedly. Ch 2

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5
Q

In TP built from 1920-1960’s will removing the cornice or sign provide access to the cockloft?

A

In most cases in the most prevalent type of TP built from 1920’s-1960’s, removing the cornice or sign in most cases will NOT provide access to the cockloft area
Ch 2

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6
Q

Sprinkler Protection Rules for TP built under 1938 Code vs 1968 Code

A

1938: Area exceeding 10,000 sq ft;
1968: Area exceeding 7,500 sq ft

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7
Q

2008 Code Group M Mercantile Rules for Sprinkler Protection in TPs;
Full Bldg vs Occupancy within a bldg

A

Full Bldg: area exceeding 12,000 sq ft OR combined area on all flrs including mezzanines exceeds 24,000 sq ft. Also, storage of merchandise is in high-piled racks or rack storage arrays.

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8
Q

2008 Code Group M Mercantile Rules for Sprinkler Protection in TPs;
Full Bldg vs Occupancy within a bldg

A

Occupancy within bldg: area exceeding 7,500 sq ft OR area of any size is located 3 stories above grade OR area of any size is located in Hi-Rise Bldg OR area of any size contains an unenclosed stair or escalator connecting two or more floors.

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9
Q

Cockloft heights in TPs

A

Vary in height from 4” to more than 6’. Ch 3

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10
Q

Most common roof type in TP

A

Constructed of wood joists covered with either tongue and groove boards or plywood. Roof then covered with combustible waterproofing material called “tarpaper” or “built up roofing” which may be several layers thick.

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11
Q

The open web joist or steel bar joist prevalent in modern TP construction is _

A

LW parallel chord truss Ch 3

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12
Q

Bowstring truss roofs may only support _% of the load they were originally desgined to hold

A

40%. Snow loads also add eccentric (off-center) unbalanced, concentrated loads that can overload trusses Ch 3

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13
Q

In older type truss roof bldgs, the trusses may be spaced _ to _’ apart with roof beams installed between the trusses to support the roof coverings

A

10 or 20’ Ch 3

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14
Q

Wood truss failure vs Steel truss failure

A

Wood truss roofs fail without warning- roof does not sag or get “spongy.”
Steel “stretches” when losing strength, wood tends to “snap” Ch 3

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15
Q

Bldgs w/bowstring truss roofs must be entered into eCIDS with abbreviation

A

BWSTRG Ch 3

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16
Q

Fire resistance of Open Web Steel Joists

A

Open Web Steel joists have NO Fire resistance rating. Fire rating depends upon ceiling finish and finish roofing. Ch 3

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17
Q

Open Web Steel Joists may span _’

A

Long distances up to 60’. Ch 3

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18
Q

Unprotected open web steel joists are particularly vulnerable to elevated temperatures of a fire and may collapse after only _ minutes

A

5-10 minutes Ch 3

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19
Q

T/F Stability of masonry walls is very much dependent on the integrity of the roof. Roof acts as a monolithic brace which ties the walls together. Collapse of roof imparts a lateral load, either pushing out or pulling in, on the wall as stresses are formed

A

True Ch 3

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20
Q

T/F Interior partition walls between stores are usually of wood stud construction, with plaster or sheetrock covering, and are usually firestopped at floor and ceiling by wood sills and plates.

A

True. Removal of large sections of plaster will weaken bracing. Ch 3

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21
Q

An average 50’ long steel beam, heated uniformly over its length to 970 degrees F will extend in length approx _”;
At 1000 F a 100’ long beam will have extended in length _”

A

Approx 4”;
9 1/2”
Ch 3

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22
Q

Should hot steel beams or columns be cooled with water?

A

Do not hesitate to cool these members. However, if the beam has already sagged under the weight of floors or roof, FFs should NOT be allowed in the possible collapse zone even if cooled. Ch 3

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23
Q

Cast iron columns are unpredictable and fail, on average in about _ minutes

A

30 minutes. Ch 3

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24
Q

Most common type of flooring in TPs

A

Tongue and groove boards or plywood, supported by wood floor joists. Ch 3

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25
Q

Which type of TP could removing the paneling under the front window display allow for vent and water application

A

Older type TP. The flooring of 1st fl may not be extended under the raised front window display. Newer TP concrete flrs are prevalent on ground level with no basements or cellars in bldg. Ch 13.

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26
Q

Colors of smoke associated with backdraft

A 
Dense black
Dirty brown
Yellow brown
Gray yellow
Ch 4
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27
Q

Can a Backdraft occur anywhere in TP

A

Yes, although cellars and storage areas are particularly vulnerable. The tighter the bldg or area is to air seepage, the greater the danger. Ch 4

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28
Q

A room or fire area requires only _% of its space to contain the explosive mixture for the entire area to possible explode.

A

25% Ch 4

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29
Q

Most fires in TP originate _

A

Rear of 1st floor where utilities, storage, and services are located. Generally, this is the lowest portion of the cockloft Ch 5

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30
Q

Roof cut at TP recommended size

A

8’ X 8’ Ch 5

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31
Q

When shall a Roof Sector Supervisor be used at a TP fire?

A

When more than 1 power saw is working on the roof. Could be a Chief or Co Off. Ch 5

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32
Q

When should a Chief be used as a Roof Sector Supervisor

A

Where roof cutting is critical. Ch 5

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33
Q

Bowstring Truss Roof: Can interior attack occur?

A 
IC may implement interior attack, AFTER a risk assessment for: 
Current structural stability of bldg
Any known life hazard
Verification of safe access to fire area
Size and location of fire

Ch 5

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34
Q

Bowstring Truss Roof: Roof Ops allowed?

A

Under NO Circumstances shall any member operate on roof of any bldg involved in a CONTENT or STRUCTURAL fire w/wood, metal, or combo bowstring truss design. Ch 5

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35
Q

Methods to discover if fire entered bowstring truss roof in bldgs with ceilings covering view of roof

A

Use TIC from below to assess OR make a triangular cut in the sloping hip section in front and/or rear of roof from safety of TL bucket. If fire found in truss space= exterior attack. TL may be used to extinguish Ch 5

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36
Q

Units are reminded of collapse potential in Bowstring Truss Roof construction with particular attention being paid to _

A

Front and rear walls. Due to hip rafters being pushed in a down and outward fashion when main roof collapses. Ch 5

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37
Q

Can members operate a HL from the roof of a bowstring truss roof?

A

Yes, but the building must NOT be involved in fire. HL may operate from the roof into an adjoining fire bldg. IC must take into account past history of truss failure in these bldgs, particularly if vacant. Ch 5

38
Q

Newer TPs roof supports are of LW open web steel joists. The most common decking is _

A

Corrugated steel. Joists are spaced 4-6’. Ch 5

39
Q

Can Vertical Ventilation be performed on LW Open Web Steel Joists?

A

Roof of fire bldgs w/this type of support must NOT be cut. Vertical ventilation should be limited to removal of skylights and scuttle covers if present. Ch 5

40
Q

White powdery residue during saw ops at TP indicates

A

Presence of gypsum roof deck. Immediately notify IC and Roof Sector Supervisor and evacuate roof Ch 5

41
Q

Does a Trench cut take the place of a ventilation hole?

A

Does not take place of vent holes. A trench may serve as an additional ventilation source. Main purpose is to prevent fire from passing that point at which cut is made Ch 5

42
Q

Where shall the Roof Sector Supervisor start a trench cut

A

Wherever deemed necessary. Immediate notification to IC of operation is mandatory. Ch 5

43
Q

Reason to Special Call Extra Engine Extra Truck at TP fire;

2nd Alarm

A

2 HLs in operation on an advanced fire in a store special call extra Eng and Truck;
Extension to cockloft, adjoining occupancy, or advanced fire in cellar 2nd Alarm
Ch 5

44
Q

Tower Ladder at TP fires

A

If TL NOT assigned on initial response, and its use is anticipated, special call one. When TP faces more than one street, consider need for one on each street. Ch 5

45
Q

Properly positioned TL can cover a bldg with a frontage of _’

A

100’ Ch 5

46
Q

Can HL be operated into a Trench cut?

A

If delayed or where pulling ceilings is impossible due to fire conditions or ceiling construction, HL may be operated into a Trench. Before HL operated, all members in stores must be withdrawn Ch 7

47
Q

Last resort at TP cellar fire

A

Flood 1st floor with Stang nozzle or TL pipe as a last resort Ch 7

48
Q

Who ensures Sprinkler System supplied at Cellar fire in TP;
Store Fire
Cockloft fire

A

3rd Engine;
3rd Engine;
3rd Engine Ch 7

49
Q

Cellar fires in TP who shuts utilities

A

1st Ladder Ch 8

50
Q

Who controls horizontal vent at TP Store and Cockloft fire

A

Communicate and coordinate vent of store at front w/Lad Off in area to be vented. Remove Show Windows when authorized by IC and only when charged HL in place (different than Cellar fire- Permission from Lad Off) Ch 8

51
Q

TP Collapse Incorrect
A. Interior partition walls between stores are usually of wood stud construction, with plaster or sheetrock covering, and are usually firestopped at flr and ceiling by wood sills and plates
B. Stability of masonry walls is very much dependent on integrity of roof. Roof acts as monolithic brace which ties together providing lateral support
C. Concrete block walls sometimes hinge at ground level and an entire side or rear wall may remain intact and fall out flat
D. Brick walls usually remain intact and fall out flat, usually a distance equal to height of wall

A

D Brick walls usually crumble or break as they fall, but large sections can be projected a good distance due to impact as wall hits the ground 3.4.2

52
Q

TP Incorrect
A. Weight added to front walls by metal overhead rolling security doors, especially in closed position, can cause lintel over store front to fail and wall and door assembly may fall during fire
B. Outside cellar stairs usually found in rear of TPs. May lead to passageway along rear cellar wall from which access can be gained to various storage areas
C. Cellar ceilings are req’d to be fire retarded but plaster covering may be deficient
D. Partition walls between cellars are usually combustible or flimsy construction and at cellar ceilings are often not fire-stopped allowing fire, combustible gas and smoke ext from cellar to cellar

A

A Open Position.

53
Q

Choose correct for TP 1920’s to 1960’s
A. Usually larger in area than older type, with many having one tenant, such as supermarket or restaurant
B. If area is large, fire walls may subdivide bldg w/termination point of fire wall usually extending through roof boards forming parapet
C. Many are 2 stories in height, w/2nd fl egress only via one interior stairway
D. Removing front cornice/signs in most cases will provide access to cockloft area

A

A
B Upper termination points of these walls vary. Some end just above or below the ceilings, others at the underside of the roof boards and still others may extend over the roof forming parapet walls.
C. Egress from the upper floor may be via one or more interior stairways or fire escapes.
D Removing the cornice or sign in most cases will not provide access to the cockloft area.

54
Q 
Automatic sprinklers req'd in 
A. 200 X 50 bldg under 1938 Code
B. 200 X 200 bldg under 1968 Code
C. 100 X 100 bldg under 2008 Code
D. 80 X 100 individual occupancy w/in bldg under 2008 Code
A

B and D both greater than 7500 sq ft
A 1938 Code Area exceeding 10,000 square feet.
B FULL BUILDING-Area exceeding 12,000 sq feet OR the combined area on all flrs including mezzanines exceeds 24,000 sq feet

55
Q

Structural collapse TP: not mentioned as consideration
A. Type of construction involved in fire
B. Intensity of fire
C. Time structural members have been burning
D. Heavy body of fire burning out of control for 10 minutes of more

A

D 20 minutes or more

56
Q

T/F: An Axial load is a force parallel to the supporting member and is straight and true and evenly applied to the supporting member

A

False: Perpendicular

57
Q 
Collapse of Bowstring roof: particular attn to which walls
A. Both sidewalls
B. Front walls only
C. Rear walls only
D. Front and Rear walls
A

D

58
Q

Incorrect TP fire
A. 1st BC must est ICP in proximity to front of bldg, but outside of collapse zone
B. If TL is not assigned on initial response and use is anticipated, special call. Properly placed TL covers 100’
C. Heavy caliber streams used- units already committed should be withdrawn to safe positions, before commencing their operation. Withdrawal should be carefully controlled and monitored via HT
D. If bldg is another type of commercial bldg, such as a dept store and has a fire cmd station, BC should est ICP in proximity to front of bldg

A

D If TP has a Fire Command Station, the 1st BC shall establish ICP at this location. If bldg doesn’t have a FCS or the location of the Station makes it unsuitable for use, the ICP should be established outside the bldg close enough to maintain radio comm w/operating units but far enough away to be able to properly size-up the situation.

59
Q

1 story TP fire. Exp 1 street, exp 2 and 4 vacant lots, exp 3 rear yard. Advanced fire in stores w/2 HLs operating, no ext to cockloft and no cellar fire. Correct
A. Transmit 2nd alarm w/4 PL raised and ensure at least 2 IFO bldg
B. Extra Eng and Truck w/all sides covered
C. Operate w/full 1st alarm, w/5 PL raised all sides covered
D. Extra Eng and Truck, ensure 5 PL raised and all sides covered w/at least 2 IFO bldg

A

D

60
Q

Incorrect Cellar TP fire
A. Interior stair to cellar, especially open stair and conditions permit, 1st HL must be stretched to this point to prevent fire spread and permit ops on 1st fl
B. HL to cellar- HL flaked out, charged, and kinks removed before advancing downstairs. Supply a line to cellar sprinkler Siamese if bldg has one
C. Stretch HL into adj cellars and operate via holes made in partitions. As last resort flood 1st fl w/cellar pipes and distributors
D. Off of advancing HL should monitor heat. When stock cannot be removed, attempt to hit fire by deflecting stream off ceiling over the stock

A

C Flood first floor with use of Stang nozzle or tower ladder pipe as a last resort.

61
Q 
TP built in 1940 is class 3 construction: Exp 1 Street, 2 Street 3 Rear alley, and 4 is a 3 story MD. Bldg not sprinklered. Max area of unsprinklered vs sprinklered
A. 14,000 sq/ft; 28,000 sq/ft
B. 14,500 sq/ft; 29,000 sq/ft
C. 17,500 sq/ft; 35,000 sq/ft
D. 10,000 sq/ft; 20,000 sq/ft
A

B

62
Q

Oldest TP incorrect (turn of century to 1920’s)
A. Usually one story in height but some have 2 stories
B. Decorative metal cornices, via which fire can spread, may be found on front of some bldgs. They cannot be removed to provide access to cockloft area
C. Hanging ceilings installed create a plenum area for fire travel
D. Some older structures have partitions, girders, beams, and columns of wood may be considered

A

B Older removal of cornices will provide access to cockloft

63
Q

Mezzanine correct in TP
A. Mezzanines are found in the rear of the store/bldg, along one side from front to rear or along part of one side, and some erected in center of premises
B. Height of ceilings in mezzanine and area below will be above average
C. Access to mezzanines may be via small wooden stairs or just a ladder. Very often there will be another means of access
D. In majority of mezzanines this area will be enclosed

A

A
B below avg height
C One means of egress
D Unenclosed

64
Q

2008 Bldg code “M” sprinkler correct (2)
A. Occupancy exceeding 7,500 sq feet
B. Occupancy area of any size is located 2 stories above grade
C. Occupancy area of any size is located in a Hi Rise bldg above 2nd fl, if located on 1st two flrs of Hi Rise bldg sprinkler is not req’d if 2 means of egress
D. Occupancy area of any size contains an unenclosed stair or escalator connecting 2/more flrs

A

A and D
B area of any size is located 3 stories above grade
C area of any size is located in a High Rise building

65
Q

Group “M” 2008 bldg code not req’d sprinkler
A. 1 story 100 X 100 (No cellar/two equal “M” occupancies) that has closely packed piles where the top of storage is 10’ high, the storage items are not high hazard commodities
B. 1 story 50 X 100 (No cellar/one “M” occupancy) that has combustible material on pallets where top of storage is 14’ high
C. 1 story 100 X 100 (No cellar/two “M” occupancies) that has flammable liquids stored on shelves, where top of storage is 7’ high
D. 1 story 50 X 100 (No cellar/one “M” occupancy) that has shelf storage where top of storage is 12’ high, group “A” plastics are being stored on shelves

A

A
B combustible materials greater than 12’ in height require sprinkler
C flammable liquids where top of storage is greater than 6’ required sprinkler
D Group A plastics over 6’ high require sprinklers

66
Q

Wooden bowstring truss in older TP incorrect
A Bottom chords of bowstring trusses have inadequate tensile strength to support code-prescribed loads
B. Updated calculations have revealed that bowstring truss roofs may only support 58% of load they were originally designed to hold
C. Older type truss roof bldgs, trusses may be spaced 10 or 20’ apart w/roof beams installed between the trusses to support roof coverings
D. Wood truss roofs appear to fail without warning. The roof does not sag or get “spongy”

A

B 40%

67
Q

Incorrect Cause of collapse TP fire
A. Back draft blowing out walls/floors
B. Weakened and burned out structural members
C. Accumulation of large vol of water on flr/ceiling
D. Static load
E. Vibration/movement in or near weakened bldg
F. Water, ice, or snow loads on roof

A

D Impact load: An object such as a gas heater falling from the ceiling, or a FF jumping onto a roof or flr which has been weakened by fire may be enough to cause collapse. An impact load has a much greater effect than the same weight carried as a static (stationary) load

68
Q 
Sagging or bulging walls will signal a potential structural collapse during FF ops in a TP. Once cubic foot of brickwork weighs _ lbs
A. 200
B. 50 
C. 100
D. 150
A

C Multiply this by the expected area of wall collapse and we are dealing with a vast total weight

69
Q

Backdraft warning sign incorrect
A. Reversal of air, pulling smoke back into a smoke filled opening
B. Glass windows stained w/smoke condensation and pulsating from pressure of fire
C. Dense gray smoke indicates lack of oxygen and large qty of free carbon and CO gas
D. Other colors of smoke associated w/backdraft are dirty brown, yellow brown, and gray yellow

A

C Dense Black smoke

70
Q

Factors that influence severity of backdraft incorrect
A. Type of gases, temperature, pressure, and make up
B. Size and location of areas involved
C. Type and size of openings made by FD
D. Proximity of openings in relation to HVAC
E. Amt of turbulence in bldg caused by direction and velocity of wind and hose streams directed in bldg

A

D Proximity of openings in relation to fire

71
Q

Correct general procedures at TP fires (3)
A. All horizontal and vertical vent must be controlled, coordinated, and communicated by 1st Lad Off
B. Vent at roof and FE at street level must be coordinated to help assure prevention of back draft and quick ext of fire
C. If roof requires cutting, cut early while it is still strong and fire ext still limited
D. Store windows should be removed entirely when necessary for effective interior ops

A

B C D

A All horizontal and INITIAL vertical ventilation by 1st Lad Off

72
Q

Bowstring truss roof interior attack after risk assessment by IC based on (incorrect)
A. Current structural stability of bldg
B. Any suspected life hazard
C. Size and location of ire
D. Verification of safe access to fire area

A

B Any known life hazard.

73
Q

Trench cut incorrect
A. Trench is an opening made full distance between two exterior walls or other firestops. Width at least 3’ wide and may be made in any direction
B. Trenching doesn’t take place of vent holes. May serve as an add’l vent source. Main purpose- prevent fire from passing that point at which the cut is made
C. It’s not practical to trench a large roof area of TP where fire has seriously involved a major portion of cockloft. Emphasis on vent holes
D. Roof Sector Supervisor cannot start a trench cut unless immediate notification to IC of operation is made and IC approves

A

D Roof Sector Supervisor can start a trench cut when necessary. Immediate notification to the IC of the operation is mandatory

74
Q 
TP 2nd alarm for all except 
A. 2 HLs operating on an advanced fire in store
B. Fire has extended to cockloft 
C. Fire has extended into adj occupancy
D. Advanced fire in cellar
A

A Extra Eng and Truck

75
Q

Correct for TP Roofs
A. Most common type of roof is plywood supported by open web joist or steel bar joist; supported approx 20’
B. Wooden bowstring truss may only support 60%
C. Snow that drifts due to wind can be deeper in one area, especially behind parapet walls on bowstring truss roofs. Eccentric (off-center) unbalanced, concentrated load, can create an overload on trusses
D. Older wooden bowstring trusses, may be spaced up to 60’ apart
E. Open web steel joists in modern TP have fire resistance ratings of 5-10 min

A

C
A most common is constructed of wood joists covered with either tongue and groove boards or plywood. The
roof is then covered with combustible waterproofing material commonly called “tarpaper” or “built up roofing” which may be several layers thick
B only support 40% of the load
D Older type truss roof bldgs, trusses may be spaced 10 or 20’ apart with roof beams installed between the trusses to support the roof coverings
E No fire resistance

76
Q

Incorrect TP Construction
A. Canopies and marquees are cantilevered over sidewalk act as a lever on parapet wall pulling down long section of it. Although marquee is not supported by posts or columns, it is req’d to have drainage
B. Steel “I” beams are often built into side or rear masonry walls, butt the front parapet wall, where they are supported by masonry piers or iron columns. Avg 50’ steal beam heated uniformly over its length to 970 F will extend in length approx 4”
C. When steel “I” beams are heated from 1000-1500F, their yield strength drops dramatically and starts to soften and fail. After 5-10 min at a fire, these beams can be heated beyond their strength limitation
D. Cooling a steel member will cause it to regain its strength and load carrying ability. If steel has already sagged under weight of flrs, cooling steel will contract it to its original length
E. Cast iron columns fail on avg in about 30 min

A

C This temp can be reached in 5-10 min at a fire and it is only a matter of time at an uncontrolled fire (thirty min for the smaller beam sections), until these beams can be heated beyond their strength limitations

77
Q

2 story TP incorrect
A. Completely ladder 2nd fl. Utilize PL
B. Small, compartmented spaces on 2nd fl indicates roof girders and a deep cockloft
C. Fire originating in cellar, may require flooding of 1st fl as a last resort
D. Large open stairway must not be overlooked if occupancy on 2nd fl is a dance hall, meeting hall

A

B Large hall on the second floor may mean roof girders and a deep cockloft

78
Q

Cooling steel members with water will cause steel beams to? (3 correct)

a. Contract to their original length
b. Regain their load carrying ability
c. Regain their strength
d. Possibly fail
e. Possibly crack

A

A B C

79
Q

The severity of a backdraft can be influenced by? (4 correct)

a. Amount of turbulence in the building caused by hose streams directed inside
b. The type of gases burning
c. Amount of turbulence in the building caused by wind velocity and direction
d. Openings made by the FDNY
e. Proximity of openings in relation to the fire

A

A C D E

80
Q

Vertical openings on TP roof should first be made by?

a. Cutting a trench
b. Opening any scuttles and skylights showing smoke
c. Cutting the roof cut directly over the fire
d. Opening scuttles and skylights over or near the main body of fire

A

D

81
Q

Examination holes may be cut for which of the following reasons? (More than one correct)

a. Use of right angle tips
b. Release pent up gases, smoke and heat in areas removed from the fire
c. Check for fire extension
d. Determine where additional vent cuts are needed

A

A-D

82
Q

At TP fires with bowstring truss construction, the IC may implement an interior attack after a risk assessment based on which factor(s)? (More than one correct)

a. Size of the fire
b. Location of the fire
c. Verification of safe access to the fire
d. Current structural stability
e. Suspected life hazards

A

A-D

E Known Life Hazard

83
Q

Bottom chords of many bowstring trusses have inadequate?

a. Tensile strength
b. Axial strength
c. Compressive strength

A

A Tensile strength The bottom chords of
many bowstring trusses have inadequate tensile strength to support code prescribed loads. Updated calculations have revealed that bowstring truss
roofs may only support 40% of the load they were originally designed to hold 3.3.3

84
Q

Regarding steel I-beams, it is correct to state that large heavy I-beams absorb?

a. More heat, so its temperature will rise more slowly than a lighter weight beam
b. More heat, so its temperature will rise more quickly than a lighter weight beam
c. Less heat, so its temperature will rise more quickly than a lighter weight beam
d. Less heat, so its temperature will rise more slowly than a lighter weight beam

A

A

85
Q

At an uncontrolled fire, smaller steel I-beam sections can be heated beyond their strength limitation in _ minutes?

a. 2 - 3
b. 10 - 15
c. 5 - 10
d. 30

A

D 30 minutes

86
Q

Wooden bowstring truss roof correct
A. Members may operate on roof only if a content fire exists. Under no circumstances shall they operate on a roof w/structural fires
B. Triangular cut made from AL in sloping hip section in front and/or rear of roof to assess if fire has involved truss space
C. Members should use TIC from below to assess if fire has involved truss space
D. Fire in truss, primary emphasis will be for interior ops to be conducted from areas of safety using reach of stream

A

C
A No roof ops for both Structural and Content fire
B TL NOT AL
D When fire is found to involve the truss space, exterior ops should be the primary tactical consideration. If
possible, an exterior hose stream from a TL may be directed into these roof cuts to extinguish fire.

87
Q

Incorrect for Bowstring Truss roofs in TP
A. In older type truss roofs bldgs, the trusses may be spaced 10 or 20’ apart w/roof beams installed between trusses to support roof coverings
B. Wood truss roofs sag or get “spongy” prior to failure. Steel trusses tend to “stretch” when losing their strength because of elevated temperatures
C. Bldgs w/bowstring truss roofs must be entered into eCIDS w/abbreviation BWSTRG as FD designation
D. Under no circumstances shall any member operate on the roof of any bldg involved in a content or structural fire w/a wooden, metal or combination bowstring truss design

A

B Wood truss roofs appear to fail without warning. The roof does not sag or get “spongy.” Steel trusses tend to “stretch” when losing their strength because of
elevated temperatures, but wood tends to “snap”

88
Q

At a taxpayer store fire during business hours, the second hose line should be stretched?

a. To the store on fire with the first line
b. To the most severely exposed store 

A

B (TP 7.3.1 B) To the store on fire with the first line

89
Q

E-99 arrives 1st at a TP cockloft fire in a pizzeria that has control of the cockloft, blowing through the roof and seriously threatening to extend to an H-type building. Choose correct (3)

a. Stretch the first line into the H-type
b. Stretch the first line into the pizzeria to knock down the main body of fire
c. Utilize In-Line Pumping to position their deckpipe
d. Position the engine for use of their deckpipe

A

A C D (TP 7.3.5 B)
The correct answers are: Stretch the first line into the H-type, Position the engine for use of their deckpipe, Utilize In-Line Pumping to position their deckpipe

90
Q

Choose two correct
A. Brick walls sometimes hinge at ground level and an entire side or rear wall may remain intact and fall out flat
B. Concrete block walls sometimes hinge at ground level and an entire side or rear wall may remain intact and fall out flat
C. Concrete walls usually crumble or break as they fall, but large sections can be projected a good distance due to impact as the wall hits the ground
D. Brick walls usually crumble or break as they fall, but large sections can be projected a good distance due to the impact as the wall hits the ground

A

B D

91
Q

Incorrect for TP fires
A. At a minimum, at least two PL shall be placed on the front of the bldgs
B. When 2 HL are operating on a advanced fire in a store, special call an extra Engine and Ladder
C. Transmit a second alarm for extension to the cockloft, adjoining occupancy, or for an advanced cellar fire
D. AT all confirmed TP fires, if a TL is NOT assigned on the initial response, special call one

A

D If it’s use is anticipated, special call one

92
Q

When fire has control of the cockloft and the need for exposure protection is critical, what should be the 2nd Eng first priority
A. Assist the 1st Eng with the 1st HL
B. Stretch a lone into a seriously exposed structure/occupancy and operate into the cockloft
C. Supply the sprinkler system
D. Stretch a line to the roof to protect operating members

A

A

firefighter procedures (20 decks)

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