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Updated Wednesday August 26, 2009

Firefighter Dictionary: K

The following is common terminology to structural fire firefighters. There are additional definitions for emergency medical terminology, building construction, arson investigation and hazardous materials and more. Please note that some definitions have more than one meaning but are spelled the same. Click on a letter to take you to that index.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  

K

K-12 Saw 

The product of a meeting between your chain saw and circular saw. Used to cut through almost anything, particularly good for making holes in metal roofs to ventilate structures.

Keeper

The metal latch plate in a door frame into which a doorknob plunger latches.

Kelly day

A rotating off-duty shift in addition to the normal off-duty schedule of the firefighter.

Kelly tool 

A metal forcible entry tool similar to the claw tool but with an adze blade at one end and a forked blade at the other.

Kelvin [K]

A temperature scale air the absolute temperature scale.

Kevlar 

Special lightweight chemical and fire resistant clothing material.

Keyless  

A plastic or porcelain light fixture that operates by a pull string. Generally found in the basement, crawl space , and attic areas.

Keyway  

A slot formed and poured on a footer or in a foundation wall when another wall will be installed at the slot location. This gives additional strength to the joint/meeting point.

Kg

Kilogram(s)

Kilogram [kg]

One thousand grams.

Kilopascal (KPA)

Metric unit of measure for pressure; I psi = 6.895 kPa, I kPa = 0.1450 psi.

Kilowatt (kw)

One thousand watts. A kilowatt hour is the base unit used in measuring electrical consumption. Also see watt.

Kindling Temperature

See Ignition Temperature.

Kinds of Resources 

Describe what the resource is (e.g., medic, firefighter, Planning Section Chief, helicopters, ambulances, combustible gas indicators, bulldozers).

Kinetic energy 

The motion of material bodies and the forces and energy associated with any moving thing or movement.

King post

In a roof truss, the central upright piece.

King stud 

The vertical "2 X's" frame lumber (left and right) of a window or door opening, and runs continuously from the bottom sole plate to the top plate.

Kingpin

Attaching pin on a semi trailer that mates with and pivots within the lower coupler of a truck tractor or converter dolly while coupling the two units together. A retaining device used to connect container to wheels. On rail, a metal rod used to connect the container to "truck housing." On highway, a metal rod in a trailer which connects to the "fifth wheel" of the unit pulling the container

Kingpin assembly

See Upper Coupler Assembly.

Kink

Severe bend in a hose line that increases friction loss and reduces the flow of water through the hose.

Kink hose

To make a sharp bend in a fire hose that restricts water flow.

Kit 

A collection of tools or appliances kept in one location for a specific purpose.

Knee brace

A corner brace, fastened at an angle from wall stud to rafter, stiffening a wood or steel frame to prevent angular movement.

Knee wall

Low wall in upper story resulting from 1 1/2 story construction.

Knob 

A slang term for a nozzle.

Knob and tube

Electric wiring through walls where insulated wires are supported with porcelain knobs and tubes when passing through wood construction members.

Knockdown

To reduce flame and heat and prevent the danger of further extension of fire; to bring a fire to the overhaul stage. Bring a fire under control.

Knot 

a. A compact intersection of interlaced material, such as cord, ribbon, or rope.
b. A fastening made by tying together lengths of material, such as rope, in a prescribed way. c. In lumber, the portion of a branch or limb of a tree that appears on the edge or face of the piece.

K-tool

The K-tool is a tool used by many fire departments for forcible entry. It is used in conjunction with a halligan bar to remove a cylinder lock. It consists of a block roughly 3 inches by 3 inches by 1 inch with a K-shaped notch on one side. This notch is slipped over the lock cylinder, then forced down by striking with the flat side of a flat-headed axe. The halligan is then used to pry the k-tool off, thereby pulling the entire cylinder out. The bolt is then retracted from the inside of the cylinder hole.

 

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