9 Access Into Structures Flashcards
The most important and most versatile forcible entry tool is the
Rotary saw, aka rescue saw
Rotary saws should not be used to cut metal when in the vicinity or presence of flammable gas or liquid because
Of sparks emitted during cutting
If a rotary saw binds what should be done
Shut off saw until blade is freed
Replace 12 tooth cold cutting blades when
Two or more teeth are damaged or worn down more than the other teeth or when tips are worn down to circumference of blade
Replace a 24 tooth rotary wood blade when
Eight or more teeth damaged or worn, or tips worn to circumference of blade
Replace concrete or mason rotary blades when
They are worn down to fit in a 8” circle
5 point door size up for forced entry
Type of door, style material
Type of frame, wood metal
Type of wall door is set in, wood, metal, masonry
Types of hinges and locks, exposed, recessed, protected
Door mvnt, inward, outward, rolling, sliding
To gain entry through a door firefighter should identify what
The weakness and exploit it
A side light in a door is
A narrow window pane to the side of the door in the frame. Bcam be broken to access lock on inside.
Panic hardware
Mounted on exit doors on public doors, that unlock from inside when pressure is applied.
In smaller low occupancy buildings the exterior doors usually swing
Inward. , hinges inside.
In larger occupancy buildings and commercial structures exterior doors swing.
Outward in direction of travel or exit, hinges outside.
Doors with panic hardware may not have hardware on what side
Outside of door, may only have hinges and no handles or hardware.
One of best tools for inward swinging door in metal frame
Rotary saw
If the body is needed to force a door, the preferred method is
Mule kick, boot protects foot, strongest muscles in leg, wall protects from fire.
On double doors a rotary saw can gain entry by
Plunge cutting through weather strip between doors and cutting locks.
Forcing all doors of the building with significant fire is called
Softening the building.
Many roll up doors do not have
An exterior latching machanism
Sectional overhead doors are similar to
Residential garage doors, hinged horizontal panels with end wheels on tracks.
Sheet curtain doors
Look like conventional steel roll up doors but are made of a few interlocking panels, function same way as conventional roll up
Nfpa testing indicates that time available for escape form a burning building can be as little as
11 minutes from ignition
Telescoping door
Made of a number of U shaped sections that nest inside one another as its pulled up. Raised with internal cables, no springs, counterweights .
In many cases the fastest way to force entry into an industrial building is through
A pedestrian door
Triangle cut is aka
Teepee cut
Triangular cuts can be problematic because
Openings aren’t usually large enough for fire attack, only escape or access to locks. May bend or distort the door preventing it from rolling up
Apex (tip) of the triangle cut should be how tall
6’ or more, sides at 45 degrees
Triangle cuts are not recommended for what type of doors
Telescoping
Alternative cut to the triangle method for roll up sheet or curtain doors
Tall vertical cut, removing slats from both sides of the cut.
Once slats are removed from both sides of the vertical roll up cut what Halle s next if the mechanism is unlocked
The upper remaining part of the door will roll up.
For telescoping door cuts what must be done after cutting the outer skin
Cut through the inner skin
The quickest way through high security Institutional doors is
With assistance from institutional staff.
Best way to overcome door security devices or security systems
Id them in pre plan
Rotary saws can be used to cut blind bolts holding security bar saddles by
Lung cutting through the bolt, by diving the. Blade next to the bolt face and at a 45 toward the shaft of the bolt.
For panic hardware a chain saw can be used to open form the outside by
Using a carbide blade, cut through the door, and then use the bar to manipulate the hardware open
If there are multiple locks on the jam side firefighters can open the door with a rotary saw by
Making a vertical cut in the door from header to base on the other side of the locks and swing it open freely
For gaining access, through what may be the fastest means of forcing entry
Windows
Leaded or stained glass in terms of forced entry is
Sometimes priceless works of art and should be protected if at all possible
Because of the ventilation changes made when opening or breaking a window, what is preferred
Opening over breaking, to control ventilation if need be
Window size up factors
Type of window Type of glass Frame or casement Locking or latching mechanisms Type of security devices used
Types of windows
Double hung, checkrail Hinged, casement Projected, factory Awning and jalouise Hurricane Hugh security
If using an axe to break a window you should use what side
The flat head side
When using a tool to break glass, how do you hold it
Hold it with the handle higher than the head, or head down, so that glass doesn’t slide down the handle
Glass should be broken inward to avoid
Flying guillotine, severing hose lines below
With glazed or shatter resistant glass, it may be faster to do what rather than break the window
Remove the frame
polycarbonate plastic that is 30 times stronger than safety 250 more than regular and stronger than plexiglas
Lexan
Fastest way to cut security bars or screens over windows is
To cut the attachment points rather than every bar. Bolt heads with rotary saw or halligan under and pry off
Thermoplastic windows
Plexiglas acrylic, Lexan polycarbonate
Most effective way through thermoplastic windows
Rotary saw with medium, 40 tooth, carbide tip blade
Plexiglas entry method, but doesn’t worth with Lexan, in absence of rotary saw
Scoring large x in the windows with pic of axe, striking the center of the x, or sledgehammer in middle, if not break may bend out of frame.
Laminated glass windows can be removed by
Cutting them out like a car windshield
Wired glass windows can be removed how
Similarly to laminated
Film coated glass can be removed how
Like laminated, with care the pane doesn’t fall on them
Shuttered (roll up steel) windows can be removed by
Same method as roll up overhead doors
Most common tools for wall breach
Rotary saw, chain saw, battering ram, sledgehammer, concrete breaker (jackhammer), air chisel
During wall breach what is a critical part of the ppe
Eye protection
One of the fastest ways to make an opening in an exterior wall is
By cutting two vertical cuts, one on either side of a window and folding down.
The building utilities should be secured prior to cutting through an exterior wall because
The risks of cutting through wires or plumbing.
Identifying a full thickness, (un reinforced masonry URM) brick wall
By the header course, bricks placed with small ends facing out, as opposed to the wythes, with long sides facing out
Breaching poured concrete walls in generally considered
Too time consuming unless in a collapse or rescue situation. Much more difficult than other walls
Tools that are ineffective on poured concrete walls
Manual tools, battering rams and sledgehammers
Knockout panel in concrete walls
A removable concrete section for making a large opening of needed to move things in and out of building, can be breached by cutting the seams with a saw
Bricked up windows that are no longer used in masonry walls are
Easier to break through than the walls
Rebar in reinforced concrete can be removed using
Hydraulic cutters, rotary saw, torch or other Exothermic device
Lightweight metal wall panels can be removed, time permitting, by
Removing screws
