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LT Test > Truck Company Operations > Flashcards

Truck Company Operations Flashcards

1
Q

Green Building?

A

A structure or occupancy designed to be environmentally friendly

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2
Q

Ground Support Device?

A

Stabilizers or outriggers

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3
Q

Ladder Tower vs. Tower Ladder

A

Ladder Tower has full size ladder leading to bucket while tower ladder just has small ladder attached to boom as an escape route

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4
Q

LIP?

A

-Life Safety
-Incident Stabilization
-Property Conservation
Primary Incident Priorities

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5
Q

SLICERS?

A 
S-Size Up
L-Locate the fire
I-Identify the flow path
C-Cool the space from the safest location
E-Extinguish the Fire
R-Rescue
S-Salvage
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6
Q

What is the most important factor in positioning?

A

Determine the intended target/task and then spot the turntable for incident priorities:

  • immediate victim rescue that is beyond the reach of portable ladders
  • master stream ops
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7
Q

Lateral grades of up to what can be corrected using the stabilizers?

A

5-6%

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8
Q

What is the preferred positioning for buildings located on a lateral grade?

A

Pulling past and operating the aerial off the rear

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9
Q

What positioning allows the truck company to scrub two sides of the building?

A

Positioning on the corner

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10
Q

Is it acceptable for the truck company to be in the collapse zone?

A

Yes, for master stream ops or victim resuce, once task is complete the unit should be relocated outside of the collapse zone

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11
Q

What basic rules should be followed anytime the aerial device is operating?

A
  • firefighters should not sit or lean against the truck
  • firefighters should look up at the aerial ladder’s location and make eye-to-eye contact with the operator before touching the truck
  • firefighters should be in the habit of touching a truck with the back of their hand before grabbing door handles, tools, or ground ladders when the aerial is in operation
  • personnel are discouraged of using the truck for command or rehab ops if the aerial is being used near wires
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12
Q

No matter the circumstances a minimum distance of what shall be maintained between the aerial device and the wires at all times?

A

10’

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13
Q

A truck company with an outrigger deployed can concentrate a weight of more than ___ where the outrigger contacts the roadway?

A

40,000lbs, exceeding 400pounds per square inch

Usage of a jack plate can reduce the weight to the singular outrigger to 25,000lbs

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14
Q

Outriggers shall never be placed?

A

On manhole covers, storm sewer boxes, underground vaults, or curbs not supported by a sidewalk

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15
Q

How can a truck simultaneously accomplish extinguishment and exposure protection?

A

alternates stream between extinguishment and exposure protection by going over the rooftop

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16
Q

During advanced fires at outdoor self-storage facilities, consider position the aerial device where?

A

Down a parallel alley and use the aerial master stream over the exposure

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17
Q

When advancing handlines via aerial ladders consideration should be given to what?

A

Securing the handline to another object and removing it from the ladder bed so the truck can be used for other tasks

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18
Q

Interior and Exterior Tasks and Personnel Complement (3, 4, 5, 6)

A

3- Interior: OIC, F/E; Exterior: Driver
4- Interior: OIC, F/E; Exterior: Driver, OVM
5- Interior: OIC, F/E, Can; Exterior: Driver, OVM
6- Interior: OIC, F/E, Can; Exterior: Driver, OVM, Roof

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19
Q

Portable ladders should be placed where and when can firefighters remove a window when placing ladders?

A

Any windowsill where the access or egress of firefighters is needed and to locations where victims are present or suspected; only with confirmation from interior personnel

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20
Q

What are the three rapid entry key systems in NOVA?

A
  • knox box
  • Supra Key
  • Lock-Box system
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21
Q

Before beginning overhaul what must happen?

A

The condition and stability of the structure be evaluated

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22
Q

On highrise fires what is best to do with smoldering materials?

A

Remove to balcony and soak them down

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23
Q

When is overhaul vital?

A

During grease duct fires

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24
Q

Conventional Roof Construction uses what kind of lumber?

A

Dimensional lumber, minimum size for support members is 2x6, greater the span required of the structural member, larger the dimension of the lumber

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25
Q

Common lightweight construction practice uses?

A

2x3 or 2x4 wood structural members held together by metal truss connectors

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26
Q

Lightweight construction three stories and larger will have what size lumber on the first floor?

A

2x6

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27
Q

All lumber is milled and therefore is?

A

Not true to size, milling reduces the size by 1/2”

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28
Q

Truss connectors used 35 years ago where made of? Truss connectors used today are made of?

A

35 years ago: Heavy gauge steel with 1/2” prongs

Today: light gauge aluminum with 3/8” or less prongs

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29
Q

Trusses are under what kind of stress?

A

Both tension and compression

30
Q

A roof where fire is suspected or confirmed at the truss area members should not be on the roof unless?

A

They are independently supported

31
Q

Roofs can be considered structurally strong upon answering the following:

A
  • what is the type of construction and its condition
  • has the fire entered or taken possession of the cockloft/attic area
  • how long the fire has been burning and its extent
32
Q

What has become more common that dimensional floor joists or roof rafters?

A

truss and plywood I-beams

33
Q

Traditional lumber joists failed at about ___ and engineered floor joists fail at about ___.

A

16 minutes

6 minutes

34
Q

What A frame type roofing system is vulnerable to rapid failure under fire conditions?

A

lightweight A frame

35
Q

While working under lightweight truss roofs, firefighters should attempt to operate in?

A

smaller compartments due to large spans and concentrated loads

36
Q

One-piece laminated arch roof?

A

-large mass timbers are multiple layers of wood and glued together. Extending exposure to heat will cause the glue to decompose and the arch to lose its structural integrity. This roofing design tends to kick out at the base and collapse violently into the structure without warning. Firefighters should operate independently from an aerial if venting.

37
Q

Multiple-section laminated arches roof?

A
  • subject to failure faster than one piece laminated arch
  • typically bolted together with metal gusset plates
  • when metal gusset plate fails, the entire arch will fail.
  • Kick out at base and collapse violently into the structure without warning
38
Q

Metal roof deck system’s ability to resist the effect of fire depends on?

A

supporting system

39
Q

Does a metal roof deck provide warning signs of impending collapse?

A

typically

40
Q

What is the collapse pattern of a metal roof deck?

A

Depends on the supporting system’s failure. If multiple supporting metal trusses fail simultaneously, the entire roof system may violently collapse into the building

41
Q

Does a flat concrete roof given any warning before collapse?

A

Little if any

42
Q

If heat causes what to fail that portion of the concrete roof will fail?

A

The metal tensioning cable(s)

43
Q

Poured in place concrete roofs tend to collapse?

A

violently into the building, often collapsing other walls as they fail

44
Q

When cutting a concrete roof and you see the presence of PVC bits what should you do?

A

Stop because this is a good indication you may have begun to cut the tensioning cables, which we do not want to cut

45
Q

Lightweight concrete has what to lessen the weight?

A

it is aerated, also may have hollow holes through the concrete

46
Q

In the precast concrete roof what holds the cables in place?

A

The concrete which can fail if the fire causes spalling

47
Q

What concrete roof system has the greatest resistance to fire?

A

Flat concrete roof/precast or poured in place WITH concrete columns—not because of the specific roof but because of the large concrete columns that support it

48
Q

In tilt-up construction how is the roofing system connected to the tilt-up walls?

A

With metal plates

49
Q

Heavy timber roof, roofing material size and supporting wood timber size?

A

Roofing material is generally 2”-3” thick wood planks with a weatherproof seal.
Supporting wood timbers at minimum 8”

50
Q

What is the main concern in a heavy timber roof?

A

The connections used to tie the roof system to the rest of the structure

51
Q

Gable Roof?

A

Typically an A frame that consists of a ridgepole and rafters that extend down to a beam that rests on the outside walls
-rafters or trusses will run perpendicular to the roofline

52
Q

In what Gable Roof construction is it common for to have a ridge vent?

A

truss construction

53
Q

Barn Roof?

A

Also known as gambrel, contains voids that must be opened early into the incident to check for extension

54
Q

Hip roof has what load bearing walls?

A

All exterior walls are load bearing

55
Q

Cross Gable Roof?

A

an architectural projection similar to a dormers, given ascetics to the structure, but also an increased dead load on the roof, under fire conditions these are known to collapse

56
Q

Can firefighters work directly underneath heavily involved cross gable attic fires?

A

Should not, common to see collapse into the top floor

57
Q

Bridge truss roofs are primarily used on?

A

Commercial and warehouse buildings

58
Q

Trussed arch roof collapse potential?

A

Great, crews should not be placed on top of or below this roof when fire has directly exposed or taken possession of the roof assembly.

59
Q

What is the significant difference between a trussed arch and bowstring truss roof?

A

Bowstring truss uses metal tie rods and turnbuckles to provide lateral support for the walls of the building

60
Q

What is the primary hazard with a bowstring roof?

A

Early failure of the tie rods and turnbuckles as a result of exposure to the fire conditions.

61
Q

Collapse of bowstring truss roof?

A

walls typically fall outwards and the roof pancake collapses to the floor

62
Q

When wood spacers are used with wooden joists in flat roofs it will allow fire to spread?

A

In all directions because the spacers run perpendicular to the joists to provide airflow to the underside of the roof deck

63
Q

Inverted roofs are inherently?

A

Spongy giving firefighters a false reading of conditions below
-found on flat roofs or roofs with a slight pitch

64
Q

On buildings with a rain roof what are alternatives for ventilating the roofs?

A
  • breaching gable vent to attack the fire within the rain roof’s space
  • attacking fire through the cockloft vents
65
Q

Facade are commonly open to what?

A

Open or common to the attic/cockloft area of the entire building and not separated at each address, crews must anticipate fire extension into this area

66
Q

What are the three roof systems in green buildings?

A

Extensive Roof System: growth soil of less than 6”, vegetation consist of low-growing plants–most common type of green roof
Intensive Roof System: 8” or more of soil
Simple Intensive Roof System: combo of both systems

67
Q

What are the two major concerns with green roofs?

A

added dead weight present on the roof and the impact the design will have on vertical ventilation

68
Q

If vertical ventilation id determined to be necessary on a green roof, personnel will need to remove up to how many inches of soil just to reach roofing materials?

A

12”

69
Q

What are the two categories of solar power?

A

thermal systems and photovoltaic systems

70
Q

Thermal solar systems?

A

present less danger to fire ops because they aren’t creating electricity, however the fluid running through these systems will be scalding hot.

71
Q

Photovoltaic systems?

A

generates electricity as long as sun is shining and potentially at night, will be equipped with roof-top disconnect as means to perform routine maintenance which should never be considered by FD as a means to shut down the system
-tactics: secure power then extinguish with appropriate medium for the system and it’s components

LT Test (13 decks)

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