Fire Dynamics
A rapid oxidation process, which is a gas-phase chemical reaction resulting in the evolution of light and heat in varying intensities.
What is Fire?
Construction type in which structural members, including walls, columns, beams, floors, and roofs, are made of noncombustible or limited combustible materials.
What is Type I Construction?
Person in charge of the incident and responsible for the management of incident operations during an emergency.
What is the Incident Commander?
Loss of pressure created by the turbulence of water moving against the interior walls of the hose or pipe.
What is Friction Loss?
Application of water to a water-soluble material to reduce the hazard.
What is Dilution?
Minimum temperature at which a liquid gives off enough vapor to form an ignitable mixture with air near the surface of a liquid.
What is Flash Point?
Portion of the exterior walls of a building that extends above the roof. A low wall at the edge of a roof.
Maximum number of subordinates that one individual can effectively supervise; ranges from 3 to 7 individuals or functions, with 5 being generally established as optimum.
What is Span of Control?
Force created by the rapid deceleration of water.
What is Water Hammer?
Temperature at which a solid substance changes to a liquid state at normal atmospheric pressure.
What is Melting Point?
Transmission or transfer of of heat energy from one body to another body at a lower temperature through intervening space by electromagnetic waves.
What is Radiation?
Metal or wooden plate used to connect and strengthen the joints of two or more separate components into a load-bearing unit.
What are Gusset Plates?
Formal methods or rules to guide the performance of routine functions or emergency operations.
What are Standard Operating Procedures/Guidelines?
Condition in which vacuum pockets form, due to localized low pressure at the vanes in the impeller of a centrifugal pump causing vibrations, loss of efficiency, and possibly damage to the impeller.
What is Cavitation?
Materials that are capable of being mixed in all proportions.
What is Miscible?
The space between at least one intake and one exhaust outlet.
What is Flow Path?
Construction type in which exterior walls and structural members are made of noncombustible or limited combustible materials, but interior structural members, including walls, columns, beams, floors, and roofs, are completely or partially constructed of wood.
What is Type III Construction?
Method for identifying which emergency responders are working on an incident scene.
What is Accountability System?
Hose appliance that has two or more female inlets and a single male outlet.
What is a Siamese Appliance?
Chemical reactions in which to or more molecules chemically combine to form larger molecules; this reaction can often be violent.
What is Polymerization?
Chemical reaction in which a substance absorbs heat.
What is Endothermic Reaction?
Horizontal member between trusses that support the roof.
What are Purlins?
Organizational principle that is developed and adopted as a basis for decision making.
What is a Policy?
Pressure at the test hydrant while water is flowing; represents the pressure remaining in the water supply system while the test water is flowing and is the part of the total pressure that is not used to overcome friction or gravity while forcing water through a fire hose, pipe, fittings, and adapters.
What is Residual Pressure?
Vaporization of a material from the solid to vapor state without passing through the liquid state.
What is Sublimation?