Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Aarons Drivers Test NUMBERS > TRUCK Numbers > Flashcards

TRUCK Numbers Flashcards

You may prefer our related Brainscape-certified flashcards:
Drivers Test flashcards Drivers Test New York flashcards Drivers Ed Texas flashcards Drivers Test California flashcards
1
Q

It takes ____ joules to raise the temperature of 1 kg of water 1°C.

A

4186 joules

Page 22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

1 BTU equals approximately____ joules.

A

1 Btu= approximately 1100 joules

Page 22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The ceiling temperature approaches ____ ° during a rollover and the heat being radiated to the floor may be sufficient to ignite ordinary material such as newspaper.

A

1100°

Pace 28

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The heat flux created by a flashover is not survivable for more than a _____ even when wearing full PPE and SCBA.

A

A few seconds

Page 47

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

And impending collapse indicator is heavy fire with no progress after____ in wood or ordinary construction.

A

10-12 minutes

Page 70

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

While two firefighters may be sufficient to locate a firefighter in distress, it may take ____or more to affect the rescue.

A

A dozen or more

Page 80

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

To use their radios, a trapped firefighter may have to alternately turn their PASS devices on and off for ____minute intervals to allow them to hear transmissions from the RIC or emergency traffic.

A

1 minute intervals

Page 83

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Crawling along the wall wiping it with one glove hand from the floor to his high as they can reach without standing up should help a lost firefighter quickly locate a window that is within about ___feet of a floor.

A

4 ft

Page 84

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Removing the wall between any two adjacent studs will only increase an opening approximately____ inches wide

A

14 inches

Page 86

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

If the stack material happens to be rolls of newspaper print that can weigh more than ____lbs each, such a collapse could be lethal for firefighters nearby.

A

2500 lbs

Page 112

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A building measuring 50 x 100’ with an accumulation of water 6 inches deep requires the structure to support an additional _____of weight.

A

78 tons

Page 113

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The ideal climbing angle for ground ladders.

A

75° from horizontal

Page 125

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The ladder selected must not only be long enough to reach the objective at a safe climbing angle, but must also extend ____rungs above the parapet or roof eve.

A

3-5 rungs over

Page 126

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A pole ladder can be raised perpendicular or parallel with. ___-___firefighters.

A

5-6 firefighters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

A minimum of____ firefighters are required to raise a pole ladder.

A

4 firefighters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

If the window opening is wide enough to permit the ladder tip to project into it and still allow room to facilitate entry, the ladder can be placed so that it extends ___-___ rungs into the window opening.

A

2-3 rungs into the window

(Pumping and aerial is different)

Page 135

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

In the absence of aerial devices, ground ladders are the primary means of gaining access to the roof of structures up to _____ stories in height.

A

4 stories

Page 139

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

When drafting water from a static source such as a pond or lake, it is important to maintain 24 inches between the intake strainer and the bottom of the water source.

A

24 inches

Page 140

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

When constructing a water chute, roll the edges of the salvage cover over the pike pole toward the middle until there is a____ ft width between the rolls.

A

3 ft

Page 142

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

If the gap between the buildings is not more than ___ the ladder length, a single ladder can be laid on the roof of one building and the tip simply slid over to the other building.

A

1/3 the length

Page 142

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

If a firefighter crawling on the floor of a smoke-filled Victorian-style residence can touch the ceiling with a _____there is probably a false ceiling in that room.

A

6ft pike pole

Page 162

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Both residential and commercial buildings construction before the middle of the 20th century commonly hadhad ceiling’s with heights of____ or more.

A

10 foot or more

Page 162

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

LARGE single family dwellings

____-____sqft.

A

5000-10000 sqft

Page 167

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Possible BLEVE situation. The DOT-Emergency Response Guidebook recommends pulling back___ in these instances.

A

1/2 mile

Page 181

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Fuel oil mechanical atomizer psi.

A

600-1000 psi

Page 184

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

The DOT-ERG recommend staging anywhere from ____-____ away from the source of both LPG and natural gas leaks.

A

160-330 feet

Page 185

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

LEL of natural gas

A

5% or 50,000 ppm

(Recommended 10% perimeter)

Page 186

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

LEL of propane

A

1.5% or 15,000 ppm

(Recommended 10% perimeter)

Page 186

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

With downed power lines the recommended isolation distance is:

A

One full span between poles or towers in all directions.

Page 193

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Alternating current detectors capabilities.

A

15ft normal

As little as 1ft in wet soil

As much as 500ft with high conductors

Page 194

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

A powerline can be reenergized with____ V from a generator.

A

240 volts

Page 195

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Most masonry walls are about ___ high and roughly ___ thick.

A

6 ft high

1 ft thick

Page 211

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Scientifically controlled fire test conducted by the NFPA indicate that the TIME AVAILABLE FOR ESCAPE from a burning building can be as little as____ minutes after ignition due to heat buildup in a confined space.

A

11 minutes

Page 219

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Replace a 12 tooth wood cutting blade when:

A

2 or more teeth are busted or the tips are worn down

Page 221

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Replace 24 tooth wood cutting blades when:

A

8 or more teeth are busted or tips are worn.

Page 221

36
Q

Replace composite concrete or metal cutting blades when they have been worn down sufficiently for the blade to fit inside a ____ inch circle.

A

8 inch circle

Page 221

37
Q

With a triangle cut the apex of the triangle should be at least ____ high in the middle of the door.

A

6 feet

Page 231

38
Q

If firefighters know that a door has several deadbolts installed, they will also know to cut the door from top to bottom about___ft from the edge of the door handle side.

A

1ft

Page 235

39
Q

The most effective blade for cutting through all types of plastic windows.

A

40 tooth carbide-tipped

Page 240

40
Q

Lite search robes are available in ___lengths at ____ volt AC power.

A

300 ft lengths

120 volt

Page 260

41
Q

Some thermal imager‘s are designed primarily for locating the seat of a fire by being calibrated to respond to temperatures in excess of____ °.

A

900°

Page 261

42
Q

Regardless of the door marking method used, the mark should be placed____of the wall or door so they are more likely to be visible below the smoke later.

A

Lower 1/3 of the wall/door

Page 267

43
Q

Large area search rope:

Main

Tethers

Details

A

Main-
•200ft 3/8in Kevlar rope
• 2in steel ring every 20ft
•knot I’m after each ring per 20ft

Tether-
•20ft 1/4in Kevlar rope 
•3/4in steel ring on one end 
• knot at midpoint
• nonlocking carabiner or snap ring at one end

Details-
• minimum 3 people
•10ft outside the area and 3ft off the ground- search rope is tied to a fixed area with a company identifier.

Page 268

44
Q

Depending on the size of the door, telescoping doors can have a space as large as _____ inches between the inner and outer skin.

A

13 inches

(At least 2 inches)

Page 324

45
Q

Exterior masonry walls usually range from ___-____inches or more in thickness depending upon the material used.

A

8-12 inches

Page 326

46
Q

Veneer-over-frame walls are essentially frame walls in which____ or ___ wood or metal studs are covered with ply or osb.

A

2x4 or 2x6

Page 326

47
Q

EIFS veneer may be as much as ___thick.

A

1ft

Page 326

48
Q

PPV blowers are set up _____ft outside the point of entry into the building so the cone of air they create completely covers the opening.

A

6 feet

Page 333

49
Q

When using windows for ventilation, the exit opening should be about ____times as large as the inlet opening.

A

2x as large

Page 332

50
Q

Compared with mechanical smoke ejectors, fog streams are capable of removing ____ times more smoke.

A

2-4x more

Page 336

51
Q

Hydraulic ventilation numbers:

A

60° pattern

85 to 90% coverage

2 feet inside

Page 336

52
Q

Rooftop solar panels electrical power can be as high as:

A

600 volts DC up to 8 amps

Page 347

53
Q

Most rooftop assemblies employee parallel rafter system with rafters spaced from ____-____inches on center.

A

12-24 inches

Page 354

54
Q

It is recommended that a clear space of at least ___ feet be maintained in all directions from anyone using a cutting tool in vertical ventilation.

A

10 feet

Page 355

55
Q

Most common pitch on residential roofs in areas with mild climates.

A

5/12 pitch

Page 361

56
Q

The sawtooth roof consist of a series of small pitched roofs similar in shape to teeth of a saw. The rafters are __x__lumber or larger and use wood or metal supports for bracing.

A

2x8 inch

Page 366

57
Q

Bridge-truss spacing in a roof system may be as much as ___-___ feet on center.

A

16-20 foot

Page 365

58
Q

When vertically ventilating a pitched roof the ventilation exit opening should be at least ____ and in many cases may need to be larger.

A

4x4

Page 368

59
Q

Flat roofs ordinarily have a slight slope of____pitch or less from the front towards the rear.

A

2/12 pitch or less

Page 368

60
Q

Wooden deck roofs may present a hazard if lightweight plywood or OSB decking is used. Panels of ____-____ inch thickness offer little fire resistance.

A

3/8- 5/8 inch

Page 372

61
Q

Because it is difficult and time-consuming to cut concrete roofs that are more than ___in thick, they are often designed with a built-in access panel.

A

4 inches

Page 374

62
Q

In a poured gypsum roof, gypsum board is placed on the brackets and is covered with a layer of gypsum cement up to____inches thick to which wire mesh reinforcement is added.

A

2.5 inches thick

Page 374

63
Q

Roof monitors can also be used for vertical ventilation. To maximize their effectiveness, at least ____of the monitor housing should be opened or removed.

A

2 sides

Page 379

64
Q

In a Bowstring Truss Roof the top chords of these arches are usually laminated __x__ inch or larger.

Purlins are usually __x__ covered by __x__ sheathing

A

2x12 laminated lumber arch

2x10 purlins

1x6 sheathing

Page 380

65
Q

In a Trussless Arch Roof the arches may be spaced between ___and ___ feet apart.

A

16 and 20 feet

Page 382

66
Q

In a Lamellar Arch Roof the framework is usually constructed of dimensional lumber in which __x__ inch wood members are bolted together at the intersections with steel gusset plates.

A

2x12 inch

Page 382

67
Q

When __ - __% of a Lamella roof burns away, sudden failure of the remainder of the roof is likely.

A

10-20%

Page 382

68
Q

In many modern buildings, heavy timber and plank sheathing has given way to laminated beams and __x__inch lumber covered by __inch plywood.

A

2x4 inch

1/2 inch

Page 383

69
Q

Penalized Roof construction:

Laminated beams dimensions- __x__in

Beam length in excess of ___ft spaced ___-___ ft apart

Purlin dimensions- __x__in and __ft centers between beams.

Rafters/sub purlins dimensions- __x__in by __ft on __ft centers between purlins

A

Laminated beams are 6x36in

Beam length in excess of 100ft spaced 12-40ft apart

Purlins are 4x12in on 8ft centers

Rafters/sub purlins are 2x4in by 8ft on 2ft centers between purlins

Page 384

70
Q

Comment sheet metal gusset plate prong size.

A

3/8 inch prongs

Page 385

71
Q

Wooden/Metal trusses have web members usually made of ___in cold rolled steel tubing with the end pressed flat. Normal spacing of these trusses is __ feet on center.

A

1 in

2 ft

Page 386

72
Q

Even without the support of interior walls, Pitched Roof Trusses span up to ___feet using __x__ inch components. The most common spacing between these trusses is __-__feet on center, and a __ inch plywood or OSB is commonly used as sheathing.

A

55 foot spans

2x4 inch components

2-4 foot on center

1/2 inch decking

Page 388

73
Q

Wooden I-Beams construction:

Web made of solid __x__in ply or osb

Chords made of __x__ , __x__ ,or micro-lam

Common spacing is __ft on center

A

Solid 3/8 in web

2x3 or 2x4 in chords

2 ft on center spacing

Pages 388/389

74
Q

Shakes and shingles are usually nailed to wooden __x__ inch or __x__inch plank sheathing with a space of about __inch between the planks.

A

1x4 or 1x6 inch planks

1 inch between planks

Page 390

75
Q

Urethane/isocyanate foams are applied to roofs in two forms. One is in the form of __x__foot sheets of foam insulation. The other form is called formed-in-place application.

A

4x8 foot

Page 392

76
Q

Light Gauge Metal/Fiberglass Roof coverings consist of aluminum, fiberglass, or ___-___ gauge steel panels over a wooden or metal structure.

A

18-20 gauge

Page 394

77
Q

Steel Clad Roof construction:

1st type-
STRAPS dimensions- __in x __in steel strap grid welded together forming __in gaps in the grid.

2nd type-
SHEET dimensions- __x__ sheets of steel from
__- __in thick.

A

1/4 inch x 2 inch strap grid

Leaving an 8 inch gap

4x8 sheet

1/8 - 1/4 inch thick

Page 395

78
Q

Because a 1/4 inch steel plate weighs___lbs per square foot a 20 x 50’ roof would have a proximately 10,000 pounds added to it.

A

10lbs per sqft

Page 395

79
Q

One 8 x 8‘ ventilation opening is equal in area two ____4 x 4 holes.

A

4- 4x4 holes

Page 400

80
Q

Trench ventilation is accomplished by cutting an opening in the roof, at least __ feet wide, across the entire width of the building.

A

4 ft

Page 404

81
Q

The staging floor in a high-rise fire is located:

A

2 floors below the fire

Page 411

82
Q

A fully equipped firefighter, especially one wearing a full toolbelt and caring spare air tanks, can weigh more than ___pounds

A

300 lbs

Page 411

83
Q

Most PPV blowers position at the street level or effective up to about ___floors.

A

22 floors

Page 414

84
Q

In a high-rise structure, assuming that the structure is closed, with little or no gas being vented to the atmosphere, a neutral pressure plane exist at the level of ambient atmospheric pressure (usually between___and __% of the buildings height).

A

35-50% of the building height

Page 419

85
Q

Draft curtains generally extend a distance equal to at least ___% of the vertical distance from the floor to the roof but no lower than __feet above the floor.

A

20%

10 ft

Page 427

86
Q

Firefighters are____ x more likely to get____ cancer ( 7#)
Liver, intestinal, prostate, lymphoma 2 x

Malignant melanoma
Other skin cancers

Testicular

Bladder, leukemia

Brain

Kidney

A

Liver, intestinal, prostate, lymphoma 2 x

Malignant melanoma 2.25 x
Other skin cancers 3 x

Testicular 2.5x

Bladder, leukemia 3 x

Brain 3.5 x

Kidney 4 x

Page 102

Aarons Drivers Test NUMBERS (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions