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What are the 4 sides of the fire tetrahedron?
- chemical chain reaction
decomposition of solids is called?
endo or exothermic?
T/F An ignitable liquid must be atomized to burn?
Amount of heat absorbed as the temp of a substance increases
thermal energy absorbed as a substance is converted from a solid to liquid or liquid to gas (change of state)
specific gravity and vapor density can be used interchangeably
vapor/specific gravity of >1 will sink or rise?
4 types of energy
quantity of heat generated by electrins depends of what variables?
- amount of electricity
- density of conductor
Causes of static electricity include:
- contact and separation between DISSIMILAR solids
- flowing powders
- flowing liquids or gases
grinding wheel sending sparks out is example of what type of energy?
FF PPE offers what type of radiation protection?
what are the 4 stages of fire?
- full development
4 factors that will affect a fire's ability to grow?
- size of space involved
- insulation of ceiling and walls
(not ambient temp outside fire area)
Occurs when a fire has changed from being fuel controlled to ventilation controlled
2 types of explosions
- deflagration (<speed of sound)
- detonation (>speed of sound)
warning signs of flashover
- rapid buildup of heat in a room
- flames from doors and windows
signs of backdraft
- puffing smoke
- smoke churning in window glass
- glass being pulled in
- lack of visible flame
- air rushing into opening
Load that passes through the center of a supporting member
load imposed on a point other than the center section of a supporting member
load that is delivered at a right angle to member
load that includes people and trasnportable items
load of building itself and nonmoving objects
load based on weather-related impacts that vary based on geographical region
fire loads include what?
combustibles inside the building but do not include building itself
precast panels that may be attached to the steel frame fo the structure by fasteners (non-loadbearing)
what is the NFPA standard for building types?
type 1 (fire resistive) construction uses what materials to insulate structural members?
- cement plaster
- clay tile
- gypsum board
- spray on materials
type 2 (noncumbustible) construction ises what kind of materials?
- structural steel
- cold-formed steel
what kind of construction is also known as "limited combustible"?
wall panels are usually what height?
total height of bldg
tilt wall slabs are attached to what?
steel skeleton frame at roof level and foundation
what makes noncubustibles some of the most dangerous buildings?
- tilt slabs
- lightweight structural systems
- steel bar joist roof systems
exterior msonry load-bearing walls and wood floors and roof
type 3 (ordinary)
T/F- type 3 may include some type of roof truss?
what are the 4 classifications of wood construction?
- post and beam or braced frameballoon frame
- platform frame
- lightwight wood frame
how much mass may be removed to create the tenon portion of post and beam?
mortise and tenon is susceptible to what type of collapse?
inward or outward
type of construction where exterior studs run vertically from basement to attic?
how many stories can a taxpayer have?
what are the 2 types of raw water sources?
- ground water
- surface water
what are the colors of hydrant caps for:
what does a triple combination fire engine entail?
what are the 2 types of couplings?
device where water enters through a single female inlet and out 2 male outlets
working pressure should not exceed__% of the test pressure
hose testing consists of what 2 parts?
- visual inspection
- pressure testing (5 mins)
hose loaded in S-shape with nozzle on top
horshoe load benefits:
- promotes good air flow
- minimizes bends
hose lay where 2 engines are used to complete 1 supply line