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lafd tower 23-4 > Ladders > Flashcards

Ladders Flashcards

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1
Q

Name of Ladders

A

ALACO tapered truss ground ladders

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2
Q

Weights and sizes of extension ladders

A

12’ 34 lbs
14’ 45 lbs
20’ 86 lbs
35’ 168 lbs

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3
Q

Material beams are made out of

A

West coast kiln dried Douglas fir

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4
Q

Material rungs are made of

A

Center swelled hardwood hickory

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5
Q

Material ladder stops are made of

A

Red oak

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6
Q

How many inches are between each rung

A

12”

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7
Q

Sections and overlap for 12, 14, 20, 35

A

12- 2x8 sections 4’ overlap
14- 2x9 sections 4’ overlap
20- 2x12 sections 4’ overlap
35- 2x20 sections 5’ overlap

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8
Q

Uses for 20x

A

2nd story window, 2nd story roof access, 3rd story window

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9
Q

Uses for 35

A

3rd story roof/window, 4th story window

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10
Q

How many straight ladders and order on the trailer

A

2-4-6

20(2)
24(2)
16(2)

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11
Q

Sizes of Straight ladders and weights

A

16’ 52 lbs
20’ 65lbs
24’ 78 lbs

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12
Q

Uses for 16’ Straight

A

roof access for single story residential without raised foundation

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13
Q

Uses for 20’ Straight

A

roof access SSR with raised foundation

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14
Q

Uses for 24’ Straight

A

commercial roof, window access

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15
Q

What is True Base on a Straight Ladder

A

Tie Rods Down

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16
Q

Sizes of all Straight Ladders

A

16, 20, 24

17
Q

Sizes of all Roof Ladders

A

10,12,14,16,20

18
Q

What signifies a roof ladder compared to a straight

A

roof hooks, a roof ladder is bowed on the truss

19
Q

What is the proper climbing angle for a ladder

A

70 degrees or 1/4 length of the ladder

20
Q

3 Types oof Dogs and which ladders are they found on

A

12x- free swinging
14x- stationary (fixed)
20 and 35x- Lever action

21
Q

Halyard size for 20x

A

1/2 inch

22
Q

Halyard size for 35x

A

5/8 inch

23
Q

Hooks on roof ladders are made of what

A

chrome steel

24
Q

Two types of ladder shoes

A

milled steel ladder shoes and corrugated rubber reinforced w/ tie cord

25
Q

when are ladders inspected

A

periodically, monthly and after each use

26
Q

wood components of the ladder are inspected for what

A

cracks, marred areas, worn spots, splinters

lafd tower 23-4 (15 decks)

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