CH 11 - Ladders
Terms in this set (35)
A self-supporting, turntable-mounted, power-operated ladder of two or more sections permanently attached to a self-propelled automotive fire apparatus and designed to provide a continuous egress route from an elevated position to the ground. (NFPA 1901)
A ladder equipped with tormentor poles or staypoles that stabilize the ladder during raising and lowering operations.
Base (bed) section
The lowest or widest section of an extension ladder. (NFPA 1931)
The main structural side of a ground ladder. (NFPA 1931)
The end of the beam that is placed on the ground, or other lower support surface, when ground ladders are in the raised position. (NFPA 1931)
Butt plate (footpad)
An alternative to a simple butt spur; a swiveling plate with both a spur and a cleat or pad that is attached to the butt of the ladder.
That component of ground ladder support that remains in contact with the lower support surface to reduce slippage. (NFPA 1931)
A ground ladder that is capable of being used both as a stepladder and as a single or extension ladder. (NFPA 1931)
To go or come out; to exit from an area or a building.
A non-self-supporting ground ladder that consists of two or more sections traveling in guides, brackets, or the equivalent arranged so as to allow length adjustment. (NFPA 1931)
Any section of an aerial telescoping device beyond the base section. (NFPA 1901)
A single-section ladder with rungs that can be folded or moved to allow the beams to be brought into a position touching or nearly touching each other. (NFPA 1931)
A narrow, two-section extension ladder that has no halyard. Because of its limited length, it can be extended manually.
A measurement of the angle used in road design and expressed as a percentage of elevation change over distance. (NFPA 1901)
Strips of metal or wood that serve to guide a fly section during extension. Channels or slots in the bed or fly section may also serve as guides.
Rope used on extension ladders for the purpose of raising a fly section(s). (NFPA 1931)
Heat sensor label
A label that changes color at a preset temperature to indicate a specific heat exposure. (NFPA 1931)
A ladder beam constructed of one continuous piece of I-shaped metal or fiberglass to which the rungs are attached.
A compliant equipment item that is intended for use as a positioning device for a person on a ladder. (NFPA 1983)
An A-shaped structure formed with two ladder sections. It can be used as a makeshift lift when raising a trapped person. One form of the device is called an A-frame hoist.
Devices attached to a fly section(s) to engage ladder rungs near the beams of the section below for the purpose of anchoring the fly section(s). (NFPA 1931)
A ladder carried on fire apparatus, but designed to be removed from the apparatus and deployed by fire fighters where needed.
Reinforcing material placed on a ladder at chafing and contact points to prevent damage from friction and contact with other surfaces.
A device with a free-turning, grooved metal wheel (sheave) used to reduce rope friction. Side plates are available for a carabiner to be attached. (NFPA 1670)
The top or bottom piece of a trussed beam assembly used in the construction of a trussed ladder. Also, the top and bottom surfaces of an I-beam ladder. Each beam has two rails.
The spring-loaded, retractable, curved metal pieces that allow the tip of a roof ladder to be secured to the peak of a pitched roof. The hooks fold outward from each beam at the top of a roof ladder.
A single ladder equipped with hooks at the top end of the ladder. (NFPA 1931)
The ladder crosspieces, on which a person steps while ascending or descending. (NFPA 1931)
A ladder beam constructed of a solid rectangular piece of material (typically wood), to which the ladder rungs are attached.
Poles attached to each beam of the base section of extension ladders, which assist in raising the ladder and help provide stability of the raised ladder. (NFPA 1931)
A piece of material that prevents the fly sections of a ladder from becoming overextended, leading to collapse of the ladder.
A metal rod that runs from one beam of the ladder to the other to keep the beams from separating. Tie rods are typically found in wood ladders.
The very top of the ladder.
A piece of wood or metal that ties the two rails of a trussed beam ladder together and serves as the attachment point for the rungs.
A ladder beam constructed of top and bottom rails joined by truss blocks that tie the rails together and support the rungs.
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