Bk 29 - Truck Operations Manual

Question 1

Effective ventilation will accomplish what four main objectives?

Answer 1

1. Save lives.
2. Assist in firefighter access.
3. Control the horizontal spread of fire.
4. Reduce the possibility of flashover and backdraft.

Question 2

When exposed to sufficient heat, metal beams can expand _____ inches per 100’ which can push out walls, etc.

Answer 2

9 inches

Question 3

The following revisions characterize the masonry buildings that were built after 1933:

Answer 3

-Exterior walls are required to be at least nine inches thick.

-Masonry walls are required to be reinforced with steel “rebar.”

-All joists and rafters are required to be anchored to exterior walls. This is usually accomplished by bolting a “ledger board” to a masonry wall and attaching the joist and rafters to the ledger board with metal hangers.

-Cement utilized in the mortar.

-Diagonal roof sheathing.

Question 4

Unreinforced masonry buildings will share all or a portion of the following trademarks:

Answer 4

-Rafter tie-plates on the exterior of a building

-Bond-beam cap of concrete on top of parapet walls. Concrete bond-beams may also have been added for strength over the windows and between the second floors of multistory buildings.

-Deeply recessed window frames, exposing about eight-inches of brick for shelf

-Walls are at least 13 inches thick.

-Windows may have arched or straight lintels.

-The lime mortar between the bricks is white, porous, sandy, and may be easily rubbed away by a fingernail, knife, etc.

-In every FOURTH to SEVENTH row of bricks, one row will have been laid “on-end.” This row of bricks is referred to as the “KINGS ROW.”

Question 5

The primary hazards of Pre-33 URM Construction:

Answer 5

1. Roof and floor collapse.
2. Wall collapse equal to AT LEAST height of wall. Added hazard from arch type roofs increases potential for front/rear wall collapse.

Question 6

Pre-33 URM

The primary danger from collapse are the FRONT and REAR walls of a building. The secondary danger from collapse are the side walls of a building.

The safe areas from collapse are:

Answer 6

1. The corners of a building.
2. A distance at least equal to the height of the walls away from a building.

Question 7

Pre-33 URM

Due to the presence of arch roofs that have been modified as per the Earthquake Ordinance and floor/joists rafters that have been anchored to the walls, exterior walls may suddenly collapse outward a distance that is equal to?

Answer 7

at least the height of the wall.

Question 8

Block Construction Hazards:

Answer 8

-Lightweight floor joists and roofs (depending on the age of the building).

-Facades are common

Question 9

Tilt Up Construction Hazards:

Answer 9

-Lightweight construction in interior walls, floors and roof. (Early collapse)

-Facades are common

Question 10

Metal Beam Construction Hazards:

Answer 10

-Vertical extension of fire and smoke to upper floors is enhanced in buildings with multiple floors.

-Falling panels of glass or other building materials.

-When exposed to sufficient heat, metal beams can expand 9” per 100’ which can push out walls, etc.

Question 11

Steel loses its tensile strength at ______ degrees F

Answer 11

1000 degrees F

Question 12

Frame / Stucco Construction Hazards:

Answer 12

-Vertical spread of fire through walls (if balloon construction)

-Lightweight construction on newer structures

-Facades can be present

Question 13

What four areas should be considered when confronted by facade construction?

Answer 13

1. Overhang
2. Facade Height
3. Supported or Unsupported
4. Height from roof

Question 14

If a facade is exposed to fire, expect the facade to collapse outward what distance?

Answer 14

at least the distance of the overhang of the facade.

Question 15

True or False?

Facades are usually open or common to the attic of a building.

Answer 15

True

Question 16

To ensure effective and safe fireground operations when dealing with LIGHTWEIGHT construction, personnel must address what four areas?

Answer 16

1. Identification
2. Communication (make everyone aware)
3. Time (early failure)
4. Operations (Offensive vs Defensive)

Question 17

Effective ventilation operations will result in the following:

Answer 17

-Assist in search and rescue, extinguishment, overhaul, and other suppression operations.

-Reduce or eliminate the numerous products of combustion.

-Reduce the interior temperature within a structure.

-Improve visibility for occupants and fire suppression personnel.

-Increased safety for occupants and fire suppression personnel.

-Reduce fire loss.

Question 18

Negative Pressure Ventilation is done by placing the blower ________ the building to exhaust contaminants.

Answer 18

-Inside the building

(Interior blowers are not efficient in removing contaminants at THE TOP of a room or building.)

Question 19

Positive pressure is most efficient when the exhaust opening (heat hole, window, door, etc.) is between ______ and _______ the size of the entrance opening.

Answer 19

3/4 to 1-3/4 the size of the entrance.

Question 20

Positive Pressure Ventilation

What is an indicator that the exhaust opening is not large enough?

Answer 20

Smell of exhaust from blower

Question 21

Blower Placement

Optimum placement is dependent on the size of the ________ and the CFM of the blower.

Answer 21

entrance opening

Question 22

Blower Placement

If two blowers of unequal CFM are utilized in the series position, place the large blower about _____ feet back from the entrance opening and utilize the smaller blower BEHIND the larger blower to cover the entrance opening with pressurized air.

Answer 22

2 feet

Question 23

Positive Pressure Ventilation

Removing screens on windows will increase the efficiency of these openings by at least _____%.

Answer 23

50%

Question 24

Measurements during overhaul operations have indicated that positive pressure ventilation can easily reduce carbon monoxide concentrations of 1000 ppm to approximately _____ ppm to _____ ppm.

Answer 24

130 to 220 PPM

Question 25

Positive Pressure Ventilation During Overhaul

If any fire does begin to accelerate or spread while using blowers, it can easily be controlled by:

Answer 25

-Extinguishing the fire.

-Turning the blower 90 degrees away from opening.

-Reducing the RPM of the blower.

-Increasing the distance between the overhaul area and the blower.

-Shutting the blower off.

Question 26

Portable Monitor

A sliding monitor can cause injury. To protect against sliding:

Answer 26

-base legs are locked into position and spikes in contact with the ground.

-Securely tie the monitor to an object capable of withstanding 900 lbs of force.

-Use additional tie downs to hard surfaces such as concrete, asphalt and metal.

-Avoid lifting the monitor when moving the hoses around

Question 27

Task Force Tips has allowed the LAFD to flow up to 1000 gpm with the portable monitor as long as?

Answer 27

The PM is attached to a loop of loaded 4” supply hose.

(Tie-down strap is 8ft long)

Question 28

Portable Monitor

What angle is the elevation safety stop set to?

Answer 28

35 degrees

Question 29

Portable Monitor

The safest method of restraining the monitor is to?

Answer 29

-use the 8ft tie down strap

(Remove all slack between the anchor and base before flowing water…..If strap is short, extend with “strong rope” or chain)

Question 30

Portable Monitor

The appliance must be inspected to this checklist before each use:

Answer 30

1. No damage to appliance
2. Legs fully opened and locked, spikes in ground
3. Monitor top is securely attached
4. Monitor securely tied down with no slack in anchor strap
5. Nozzle elevation is above 35 degree safety stop. Elevation handwheel works properly
6. Monitor top freely swivels. Rotation lock lever works.
7. Monitor is pointed in safe direction

Question 31

Portable Monitor Deployment

-Select a site that has suitable anchor point(s) or has room to deploy a _____ foot diameter loop of hose.

-First coupling is secured to 4” hose _____ ft behind portable monitor.

Answer 31

10 ft for both

Question 32

The ________ tip is the ONLY nozzle that is to be used with the Crossfire Portable Monitor.

Answer 32

-Master Stream 1000 selectable volume spray tip.

(Members SHALL NOT use any smooth-bore tip, stacked tips, or other spray nozzles on the Crossfire Portable Monitor.)

Question 33

Air Rescue Cushion Task Force Operation

Engine Captain Responsibilities:

Answer 33

-Assists in moving air cushion to target area.

-Polices target area for hazards that can damage the air cushion (i.e., sprinkler heads, broken glass, etc.)

-Insures Air Rescue Cushion is fully inflated.

-Supervises deployment of air cushion pre-deployment area.

-Coordinates movement of cushion, blowers, and power source.

Question 34

Air Rescue Cushion Task Force Operation

Engineer responsibilities:

Answer 34

-Assists in deployment of electric blowers to target area.

-Attaches electric blowers to inflation sock.

-Controls electric blower movement in coordination with air cushion.

-“200” Engineer does the above plus sets up gas powered blowers

Question 35

Air Rescue Cushion Task Force Operation

Engine FF responsibilities:

Answer 35

-Assist in deployment of air cushion to target area.

-Assists in deployment of cushion.

Question 36

Air Rescue Cushion Task Force Operation

Who’s responsibility is the following?

-Safety Officer for the overall operation.
-Supervise deployment of air cushion.
-Controls timing of jumper(s).
-Ensures that cushion is fully inflated.
-Liaison with LAPD and/or Incident Commander.

Answer 36

Task Force Commander

Question 37

Portable Monitor

Spikes must be sharp to provide resistance to sliding. Replace any spike if the tip diameter exceeds ______ inch.

Answer 37

1/16 inch

Question 38

Portable Monitor Pump Pressures

Answer 38

Typo on pressures?