Volume 3: LADDERS AND EVOLUTION Flashcards
(167 cards)
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