Vent cpt 5 Flashcards
Vertical ventilation is a ___ of ventilation that utilizes convective heat currents
and increased pressure, created by high temperatures in a structure that is on fire, to
carry smoke up and out of a structure
natural form
For the proper placement of the roof opening as close to the seat of the fire as possible,
firefighters should read the_____
ventilation profile, utilize a TIC, and communicate with
interior crews.
A door to a stairway that pierces a flat roof
bulkhead door
The puncturing of ceiling materials from above to allow smoke and heat to vertically exit a finished living space.
ceiling punch
A heavy type of roof sheathing material that is up to three
inches in thickness
car decking
The removal of heat, smoke and fire gases after
extinguishment of the fire.
smoke removal
The opening of the roof covering or existing roof openings for the purpose of
allowing the products of combustion to escape into the atmosphere
coordinated vertical vent
The direction that is downwind from the intended ventilation
point.
leeward side
Attic space between a flat roof and the ceiling joists of the living
space below
cockloft
Cuts that are made parallel to
rafters to ensure that the roof decking
within the hole spans no more than one
rafter
dicing
The process of supplying air to and removing air from
an indoor space without using mechanical systems. Horizontal and
vertical ventilation tactics used by firefighters are forms of natural
ventilation.
Natural ventilation
A three-sided diagnostic cut used to determine the type, direction, and spacing of rafters aswell as the sheathing type and thickness of the roof covering
inspection hole
Procedure for removing sheathing boards from roof framing members performed by making a quick motion upward and back toward the firefighter using a long tool.
J hooking
Smoke movement from a structure that shows flow paths of
heat and smoke out of the structure as well as air movement into the structure.
vent profile
A small, covered opening that provides access to the roof from the
interior of a building. When used for ventilation purposes, scuttles must be
evaluated to ensure they access the space intended for ventilation. (Attic or
public hallway)
roof scuttle
The roof ____ be opened until it has been visually confirmed that fire has extended to the attic or the top floor living spaces of the structure.
should not
When fighting fires in balloon frame structures, It is especially important to have ___ ready before holes are opened in the walls, ceilings, or roof.
hose lines
___ for smoke removal should not be used for in the walls of a
balloon frame structure until the fire has been completely extinguished.
Positive-pressure ventilation