6/7 Ladders and Evolutions

Question 1

Base, true : Indicated only by the ____ on straight ladders which will be under the rungs of a raised ladder when the true base is down.

Answer 1

tie-rods

Question 2

Moving Pivot : base member spans pivot beam at approximately ____ level and opposite beam at approximately ____ level.

Answer 2

3rd rung / 5th rung

Question 3

Extension ladders =

Answer 3

12 / 14/ 20 / 35

Question 4

Straight ladders =

Answer 4

16 / 20 / 24

Question 5

Roof ladders =

Answer 5

10 / 12 / 14 / 16 / 20

Question 6

Collapsible ladder =

Answer 6

10

Question 7

Members on ladders

10/ 12/ 14/ 16

Answer 7

One member

Question 8

Members on ladders

20 and 24

Answer 8

Two members

Question 9

Members on ladders

35

Answer 9

Three members

Question 10

Roof ladder : members on ladders

10/ 12/ 14’

Answer 10

Two members

Question 11

Roof ladder : members on ladders

16 / 20’

Answer 11

Three members

Question 12

Pigmented paints shall not be used on ladders except on ____ and for ___

Answer 12

metal parts / marking

Question 13

The proper climbing angle of a ladder is approximately ____.

Answer 13

70 degrees

Question 14

To obtain this angle, the base of the ladder should be placed at a distance from the building or objective equal to approximately ____ the desired height.

Answer 14

1/4

Question 15

The 20-foot straight ladder can sometimes he used to reach the ______.

Answer 15

lowest fire escape balcony

Question 16

Twenty-four foot straight ladders are used for reaching roofs of _____, windows on ____, fire escape balconies, etc.

Answer 16

one-story buildings / second floors

Question 17

Extension ladders should normally be extended ____ windowsills or fire escape balcony railing, and a MINIMUM of _____ or more above parapet walls, roofs, etc.

Answer 17

one foot above / three feet

Question 18

Raising 16 and 20 roof ladder :
Top member climbs ground ladder and places arm between_____ rungs of roof ladder. Base member climbs ground ladder until his/her head is even with _____ below feet of top member, places arm between ______ of roof ladder.

Answer 18

second and third / second rung / convenient rungs