6/7 Ladders And Evolutions Flashcards
Moving pivot;
Used while raising, base member spans pivot beam approximately ___ and ___ rung level
3rd and 5th
Terminology;
Ladder on the beam and rungs in vertical position
Park
Terminology;
When ladder is laid on ground with rungs in horizontal position
Rest
Terminology;
Devices which prevent extending the fly out of the main section
Metal rods which reinforce and hold the ladder assembly together
Stops
Tie-rods
Terminology;
Blocks between the main and truss beams of a trussed ladder
Truss blocks
Number of members permitted on ladders;
10,12,14 and 16 =
20 and 24=
35ft=
Roof ladders;
10,12,14=
16 and 20=
1
2
3
2
3
Maintenance;
Ladders should be inspected ___ and ___
Check for ;5
Periodically and after use
1.marred, worn, cracked , or splintered
2shoes worn
3worn, frayed or loos halyards
4loose tie rods and beam bolts
5racked , peeled or blisters finish
Oil locks and pulleys;
Minimum of ___ coats of ___
Pigmented paint shall not be used except
As necessary
2 coats of clear finish
On metal and for marking
The proper climbing angle of a ladder is ___
To obtain this angle base of ladder should be placed at a distance from the building or objective equal to or approximately ___ the desired height
70 degrees
1\4
Ladders raised to fire escapes or balconies shall
Be secured to balcony railing wit( ladder st4ap
6/7-02.13 VENTILATING Ladders may be used to advantage in ventilating above ground where windowpanes are encountered. With the ladder held in position some distance away, allow top to fall against the glass. Watch for glass falling or sliding down beams of the ladder.
How to reduce this possibility
Turning the ladder so that only the beam strikes the glass
16 and 20 ft straight ladders are generally used for reaching ____ roofs and Windows on ___ floor.
The 20 straight can sometimes reach ____
1 story
2nd floor windows
Lowest fire escape balcony
Note;
Never place hand over ___ when throwing ladder
Shoe
Extension ladders should normally be extended __ ft above windowsills or balconies. And a minimum of ___ ft above parapet walls, roofs, etc
1ft, 3ft
12ft x ladders are useful for ____ and as____.
Made in ___ ft sections
Inside work and as stepladders
7’
14x = ___ ‘ sections
9
20x used to reach ___ story structures and ___ floor windows and occasionally ____ fire escape balconies.
These ladders are made of 2 ___ ft sections
1 story
2nd story window
Lowest
12
Thirty-five foot extension ladders are used to reach fire escape balconies, roofs of ______, second and ____floor windows, etc. These ladders are made of two ____foot sections.
2nd and some red roofs
3rd floor windows
20’
Roof ladders lengths=
10,12,16,20
Raising 10 and 12 roof (one member)
Grab ___ rung from hocks and open hooks
Proceed up ground ladder, place arm between ___ and ___ rung or ___
2nd rung grab
Through 2nd and 3rd rung or more convenient
Raising 16 and 20 roof (2 member)
Top member places arm between second and 3rd rung
Base member climbs ground ladder until his/her head is even with the ___rung below feet of top member
If used as one member ladder, climb with arm between _____
2nd
rung most convenient slightly above middle of ladder, weight on shoulder will facilitate sliding roof ladder on roof
