Volume 3: LADDERS AND EVOLUTION Flashcards
Baby Bangor
14- foot extension ladder
Bottom end of a ladder.
Base
Indicated only by the tie-rods on straight ladders which will be under the rungs of a raised ladder when the true base is down.
True base
The principal structural assemblies of ladders.
Beams
Principal structural member of a beam assembly on a trussed ladder.
Main beam
The secondary structural member of a beam assembly on a trussed ladder.
Trues beam
Bolts which hold the beam assembly together.
Beam bolts
A method of raising a ladder on edge. One beam above the other and rungs vertical at the beginning of the raise.
Beam raise
Strengthening strips attached diagonally from main beam to truss beam in some types of trussed ladders.
Braces
Used to raise one member extension ladder from rest position. Member assumes squat position beside ladder, both feet against beam. Grasps proper rungs, hands against outside beam, elbows outside knee. Rocks over ladder, locks arms, returns to squat position with ladder chest high and rungs parallel to body.
Curling
Used to return one member extension ladder to rest position.
Reverse curl
Locks
Dogs
Climbing side of ladder; the side away from the building when in position for climbing. Rung side on LAFD ladders.
Front of ladder
Member working front side of ladder.
Front member
Methods used to secure the base of ladder from undesired movement.
Footing
Longitudinal strips on inner side of beam assemblies on most extension ladders which guide the fly section and hold the fly to the main section.
Guides
Rope used to extend the fly section of a ladder.
Halyard
Folding steel members that secure a roof ladder for climbing.
Hooks
The hand (or -foot) that is closer to the ladder. Also, the hand (or foot) that is closer to the other member of a two-member team when working side by side
Inside Hand (or Foot)
Used to secure one beam of a ladder when raising or lowering the fly section. The knee is lodged against one side of the beam and the instep of the foot is hooked around the opposite side of the same beam. For safety, avoid placing toe of locked foot under fly section.
Knee/Foot Lock Position
A ladder built in one section.
Straight ladder
A ladder built in two or more sections which can be extended to increase its length.
Extension ladder
Lowest or bottom section of extension ladder.
Main section
Extension section of a ladder, usually refers to the top section
Fly section
(Front or rear). The left member of a two-member team when working side by side as viewed from behind.
Left member
Positive locking devices which keep the fly section from retracting once raised.
Locks
Secure or lock oneself to a ladder with the leg.
Locking in
Rest the upper portion of the ladder against objective after raising ladder to vertical position.
Lower-in
Removing a ladder from a raised position. Includes retracting fly of extension ladder.
Lowering
Used while raising ladders to bring them parallel with objective.
Moving pivot
Moving pivot
As ladder approaches the near vertical position, base member spans pivot beam at approximately ___ rung level and opposite beam at approximately ___ rung level.
3rd rung
5th rung
See “inside” hand (or foot). Opposite of “inside.”
Outside Hand (or Foot)
Ladder on the beam and rungs in vertical position.
Park
As applied to ladders, means turning a ladder on one beam when the ladder is in a vertical or near-vertical position.
Pivot
Grooved wheel over which the halyard drawn when extending an extension section.
Pulley
Methods of raising a ladder. See “flat raise” and “beam raise.”
Raises
Placing a ladder in position for climbing; includes extending fly of extension ladders and lowering in.
Raising
Side of ladder opposite the climbing side; side of ladder toward the building when in position for climbing.
Rear of ladder
Member working rear side of ladder.
Rear member
When ladder is laid on ground with rungs in horizontal position.
Rest
Front or rear) The right member of a two member team when working side by side as viewed from behind.
Right member
Cross-members of ladder used when climbing. They are set in main beams or in truss blocks between main and truss beams.
Rungs
______ ______means that rungs are on the side farther from the building after ladder is raised.
Rungs away
Rungs are on the side closer to the ground.
Rungs down
Front of ladder; the side closer to the rungs; climbing side on LAFD ladders.
Rung side
Rungs are on side away from ground.
Rungs up
Metal devices attached to the base of each beam to provide a better footing and to protect the beam ends.
Shoes
Grasp the main and truss beams of an extension ladder shoulder high in such a way that the hand will not be injured by raising or lowering the fly.
Span the beams
Placing the base of ladder in correct location prior to raising.
Spotting
Devices which prevent extending the fly out of the main section.
Stops
Web straps with buckle used for securing ladders, improvising stepladders, etc.
Straps
Metal rods which reinforce and hold the ladder assembly together.
Tie rods
Moving a ladder forward from the balanced carrying position by extending both arms causing the base to drop to the ground.
Trombone
Vertical, diagonal, and longitudinal strengthening parts of a trussed ladder. Includes braces, blocks, and truss beams but usually refers to truss beams.
Trusses
Blocks between the main and truss beams of a trussed ladder.
Truss blocks
Extension ladders in feet?
12, 14, 20, 35
Straight ladders in feet?
16, 20, 24
Roof ladders in feet
10, 12, 14, 16, 20
Collapsible
10
Number of members permitted on straight and extension ladders
One member=
Two members=
Three members=
One member= 10,12, 14, and 16
Two members= 20, 24
Three members= 35
Number of members permitted on roof ladders
Two members=
Three members=
Two member= 10,12, and 14
Three member= 16, and 20
Ladders should be inspected
Periodically and after each use
Maintenance
Check for:
(1)______ , _____, _____ or splintered parts
(2) Shoes worn ______
(3) Worn, frayed or loose _______
(4) Loose _______ and _____ ______, and
(5) ______, _______ or blistered finish.
Marred, worn, cracked
Smooth
Halyards
Tie rods and beam bolts
Racked, peeled
Check for and touch up _____ ______ after each use.
Chipped finish
Minimum of _____ _____ of clear finish, per Department specifications, should then be applied as a means of preserving the wood and facilitating inspection. Sand lightly between coats.
Two coats
_________ paints shall not be used on ladders except on metal parts and for marking.
Pigmented paints