RAISING THE 20X FROM GROUND Flashcards
WHEN IS THE 20X USED?
Twenty-foot Extension Ladders are used to
reach second story windows, one story roofs,
and some second story fire escapes
HOW MANY SECTIONS IS IN THE 20X?
They consist of
two 12-foot sections.
FOR THE 20X WHICH DIRECTION IS YOUR BASE?
Approach ladder with main section up
Base(shoes) to your left, toward objective
WHICH RUNGS DO YOU GRASP?
Using both hands, natural grip
At 4th and 6th rung from the top
Palms facing each other
Hands against outside beam
HOW DO YOU LIFT LADDER?
Rock over ladder Curl ladder to form window, looking between 4th and 6th rungs Using legs to lift With back straight With outside arm to near vertical Use inside hand to assist by spanning inside beam (do not ground outside shoe maintaining 1” to 1½” off ground)
HOW MANY STEPS DO YOU TAKE?
Take 3 to 4 steps
Bring ladder to near horizontal by sliding
inside beam on inside shoulder to find
proper balance point
HOW DO YOU CARRY LADDER?
On right shoulder
Top shoe slightly below eye level
WHICH WAY DO YOU PIVOT LADDER ONCE GROUNDED?
To the left, stepping forward with right foot
Follow pivot, rungs parallel to objective
WHAT DO YOU DO WHEN YOU STEP IN FRONT OF LADDER?
From convenient side While spanning both beams Using both hands Natural grip At shoulder height
HOW DO YOU LOCK TH CONVIENT LEG?
With convenient leg, lock knee around main
beam
With same foot, lock around rear of shoe,
approximately 30 to 45 degrees to base
Other foot is positioned 18” to 24” in front of
ladder, in a comfortable position
HOW DO YOU RAISE THE FLY SECTION?
Using both hands Thumbs up, natural grip Slightly above head level Elbows high Forearms in contact with beams
WHICH DIRECTION DO YOU LEAN LADDER WHILE RAISING FLY/
Lean ladder slightly toward objective While continually watching fly section Pull down on halyard, hand over hand at head level Maintain slight elbow contact with beams
WHAT DO YOU DO WHEN LOCKING DOGS?
Use same hand as footed shoe Slap leg verbally stating “Locking Leg” Reach down to capture halyard With natural grip, thumb up, pull upward on halyard, Release tension on upper hand to allow dogs to slide down and lock Assure dogs are locked with a visual check and verbally state, “Dogs Locked”
HOW DO YOU ADJUST A 20 X LADDER?
Capture halyard and convenient rung
With opposite hand, secure halyard
between thumb and index finger
Hold halyard firm, against convenient rung
Using pinch grip, palm up
CAN YOU MOVE THE BASE OUT?
Look down at base, prior to lowering ladder
(Note: The base shall not be moved out
while fly is extended)
AFTER YOU ENSURE FOUR POINT CONTACT WHAT MUST YOU DO?
“That’s High”
Standing to left of ladder (ladder to your left)
HOW DO YOU LOWER THE 20X LADDER?
Grasp 6th rung from the top
Grasp 4th rung from the top
STATE THAT HIGH..
WHAT IS THE WEIGH OF THE 20X ?
3) 20 foot 96 lbs.
WHAT ARE THE BEAMS MADE OF?
Tapered truss side rails made of Air dried
West Coast Douglas Fir
WHAT IS THE RUNGS MADE OF?
Swelled center solid Hickory rungs
RUNGS ARE PLACED AT WHAT SPACING?
Rungs placed at 12-inch centers (easier and
increased climbing power versus rungs that
are at 14-inch centers)
WHAT ARE THE TIE RODS MADE OF?
Steel tie rods
WHAT ARE THE MISC PARTS MADE OF ?
Miscellaneous wear parts made of solid Red
Oak
HOW MANY PEOPLE RAISE THIS LADDER?
Raised by one person
20 X IS USED TO REACH WHAT?
Used to reach roofs of one story structures
and second floor windows
Can be used to reach some lower fire escape
balconies
12 foot sections
HOW MANY MEMBERS PERMITTED ON THE 20 X
TWO MEMBERS PERMITED ON THE 20X AND 24
