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Week 6 Block Test 7 > Chapter 12 Ladders > Flashcards

Chapter 12 Ladders Flashcards

1
Q

egress

A

method to exit or escape

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2
Q

grade

A

the level at which the ground intersects the foundation of a structure.

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3
Q

Ladder secondary functions

A
  1. roof ladders provide stable footing and distribute the weight of fire fighters during pitched roof operations.
  2. Ladder gin- are used to lower a rescuer into a trench or manhole or to raise a victim safely from a below grade site.
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4
Q

Basic components of a straight ladder (roof)

A
  1. butt
  2. tip
  3. truss block
  4. rail
  5. beams
  6. rung
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5
Q

types of beams

A
  1. trussed beam
  2. I- Beam
  3. Solid Beam
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6
Q

Beam

A

is one of the two main structural components that run the entire length of most ladders or ladder sections. Beams support the rungs

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7
Q

Trussed Beam

A

Has a top rail and a bottom rail which are joined by a series of smaller pieces called truss blocks. rungs attach to truss blocks. Aluminum or wood

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8
Q

I-Beam

A

Has thick sections at the top and the bottom which are connected by a thinner section. the rungs are attached to the thinner section of the beam this type of beam is usually made from fiberglass.

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9
Q

Solid Beam

A

as a simple rectangular cross section many wooden ladders have solid beams. Rectangular aluminum beams which are usually hollow or c shaped are also classified as solid beams.

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10
Q

Rail

A

is the top or bottom section of a trussed beam. each truss beam has two rails

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11
Q

Truss Block

A

is a piece or assembly that connects the two rails of a trussed beam.

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12
Q

Rung

A

is a crosspiece that spans the two beams of a ladder. usually aluminum sometimes wood

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13
Q

Tie rod

A

is a metal bar that runs from one beam of the ladder to the other and keeps the beams from separating. typically found in wood ladders

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14
Q

Tip

A

is the very top of the ladder

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15
Q

Butt

A

is the end of the ladder that is placed against the ground when the ladder is raised, sometimes called the heel

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16
Q

Butt Spurs

A

are the metal spikes that are attached to the butt of a ladder.

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17
Q

Butt Plate/footpad

A

is an alternative to a simple butt spur it is a swiveling plate attached to the butt of the ladder and incorporates both a spur and a cleat or pad.

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18
Q

Roof Hooks

A

are spring loaded retractable curved metal pieces that are attached to the tip of the ladder to the peak of a pitched roof

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19
Q

Heat sensor label

A

identifies when the ladder has been exposed to specific heat conditions that could damage the structural integrity of the ladder. Ladders exposed to heat must be removed from service and tested before being used again. 300 degrees turns black

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20
Q

Protection Plates

A

reinforcing pieces that are placed on a ladder at chaffing and contact points to prevent damage from friction or contact with other surfaces.

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21
Q

Extension Ladder Components

A
  1. Bed section
  2. Fly section
  3. Guides
  4. Halyard
  5. Pawls
  6. Pulley
  7. Stops
  8. Staypole (Banger)
22
Q

Ext. Ladder Components (bed section)

A

is the widest section of an extension ladder. The base

23
Q

Ext. Ladder Components (fly section)

A

the part of an extension ladder that is raised or extended from the bed section.

24
Q

Ext. Ladder Components (Guides)

A

strips of metal or wood that guide a fly section as it is being extended.

25
Q

Ext. Ladder Components (halyard)

A

is the rope or cable used to extend or hoist the fly sections of an extension ladder. runs through the pulley

26
Q

Ext. Ladder Components (dogs/pawls)

A

the mechanical locking devices that are used to secure the fly section

27
Q

Ext. Ladder Components (pulley)

A

small grooved wheel that is used to change the direction of the halyard pull

28
Q

Ext. Ladder Components (stops)

A

pieces of wood or metal that prevent the fly sections of a ladder from overextending and collapsing the ladder. (stop blocks)

29
Q

Ext. Ladder Components (staypoles)

A

tormentors are long metal poles that are attached to the top of a bed section and that help stabilize the ladder as it is being raised and lowered. usually 40ft or longer.

30
Q

Types of Ladder (straight ladders)

A

12-20 ft sometimes 30ft rarely used because they are hard to store

31
Q

Roof ladder (hook ladder)

A

straight ladder that is equipped with retractable hooks at tone end.

32
Q

Extension Ladder

A

an adjustable length ladder with multiple sections

33
Q

Bangor Ladder

A

extension ladders with stay poles for added stability during raising and lowering operations usually 35-40ft

34
Q

Combination ladder

A

used for tight spaces, can be converted from a straight ladder to a stepladder configuration (A-frame) 6-10ft, 10-15ft extension

35
Q

Folding ladder

A

(attic) is a narrow collapsible ladder that is designed to allow access to attic scuttle holes and confined spaces 8-14ft

36
Q

Fresno Ladder

A

is a narrow two section extension ladder that is designed to provide attic access no halyard extended manually

37
Q 
Inspection and maintenance NFPA 1931 (manufacturer standards)
NFPA 1932 (maintenance and service)
A
  1. Heat sensor usually yellow/orange turns black when exposed to 300 degrees
  2. Check all components for damage, use candle wax to lubricate sliding pieces,
38
Q

Approx. distance for a residential construction

A
  1. Residential floor to floor height- 8/10ft

2. Residential floor to windowsill height- 3

39
Q

Approx. distance for a commercial construction

A
  1. Commercial floor to floor height- 12ft

2. Commercial floor to windowsill height 4ft

40
Q

Extension for roof operations

A

should be at least 5 to 6 rungs over the roofline at 75 degree angle

41
Q

Extension placement and angle for rescue

A

the tip of the ladder should be just below the windowsill at a 60 degree angle

42
Q

Extension placement and angle for ventilation

A

tip of the ladder should be even with the top of window opening 75 degree angle

43
Q

Extension placement for line over ladder

A
  1. no more than 1 firefighter per section
  2. no more than 10ft between firefighters
  3. no more than 30ft of hose between firefighters
    75 degree angle, two feet over top of window (centered), hose line should be arm length midpoint opening and tied with clove hitch
44
Q

Dog Click equation

A

two section ext ladder- height minus- base of ladder

three section ext. ladder- height minus base of ladder divided by 2

45
Q

AFD carries

A
  1. single person low shoulder carry
  2. two person low shoulder carry
  3. three person flat shoulder carry
  4. four person flat should carry
  5. three/four person flat carry
  6. suitcase carry
46
Q

AFD pumper ladder

A
  1. 10 ft attic ladder
  2. 14-16 ft roof ladder
  3. 24 ft two section extension ladder
47
Q

Ladders should be inspected? Weight rating?

A
  1. monthly and after every use, AFD uses candle wax to lubricate sliding parts
  2. 750 lbs. 4:1 rating= 3000 lbs hold 2 fire fighters and a victim
48
Q

Rescue operations (3)

A
  1. make verbal contact
  2. anticipate victim behavior
  3. safe guard victims as they climb down (use body wait to pin them against ladder)
49
Q

Bed Sizes for 24ft two section, 35 ft two section, and 35ft three section ext ladder

A
  1. 14ft.
  2. 20ft.
  3. 15ft.
50
Q

TAR?

A

Tie halyard
Angle check
Roll ladder (single person 24ft. ext.)

51
Q

Floor ladders ware limited to what length?

A

50ft.

52
Q

AFD ariel platforms

A

ladder 13, and 21 95ft.

Week 6 Block Test 7 (1 decks)

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