Building materials 1
Which is a typical characteristic of composite or engineered materials?
A. Low structural strength
B. High structural strength
C. Difficult to manufacture
D. Expensive compared to other materials
B. High structural strength
Which construction type may consist of exterior load-bearing masonry walls that can collapse in one piece or crumble?
A. Type I
B. Type II
C. Type III
D. Type V
C. Type III
Which is the least stable of all jacks and is prone to fail under heavy loads?
A. Bar screw jacks
B. Hydraulic jacks
C. Trench screw jacks
D. Ratchet-lever jacks
D. Ratchet-lever jacks
What is a safety rule when using pneumatic lifting bags?
A. Inflate as quickly as possible
B. Never inflate a device without a load
C. Never stack any devices for an operation
D. Place a piece of material between the bag and object
B. Never inflate a device without a load
Which foam application technique may be employed when an elevated object is near or within the area of a burning pool of liquid or an unignited liquid spill?
A. Roll-on method
B. Pour-over method
C. Rain-down method
D. Bank-down method
D. Bank-down method
Which of the following provides the most effective fire barriers in a building?
A. Windowless construction
B. Older construction buildings
C. A lower level of compartmentation
D. A higher level of compartmentation
D. A higher level of compartmentation
Which is the third action taken when collapse is imminent?
A. Finish suppression in progress
B. Establish and clear the collapse zone
C. Preform a roll call or personnel accountability report
D. Exit the building with your crew and inform command
C. Preform a roll call or personnel accountability report
Why are low-head dams extremely dangerous for victims and rescuers?
A. The water near them is extremely deep
B. Rescue craft are unable to get close enough for rescue
C. They are near shallow, rocky areas which pose additional risks
D. The hydraulic action of this dam is virtually impossible to escape
D. The hydraulic action of this dam is virtually impossible to escape
Which collapse pattern occurs when the floor and/or roof assemblies on both sides of a load-bearing center wall collapse?
A. Lean-to
B. Pancake
C. A-frame
D. Cantilever
C. A-frame
Which foam extinguishing method works by preventing air from reaching the fuel and mixing with the vapors and preventing the release of flammable vapors?
A. Cooling
B. Separating
C. Penetrating
D. Smothering
D. Smothering
An indicator of structural instability or collapse is:
A. Varied fire patterns
B. Deteriorated mortar between the masonry
C. The absence of tie rods that hold walls together
D. Fire above floors that support heavy machinery
B. Deteriorated mortar between the masonry
Which construction type consists of unprotected steel or noncombustible supports that can expand, twist, and constrict during a fire, causing floors and walls to collapse?
A. Type I
B. Type II
C. Type III
D. Type IV
B. Type II
Which saw is lightweight, quiet, highly portable, and is often used for delicate cutting operations?
A. Rotary saw
B. Circular saw
C. Whizzer saw
D. Reciprocating saw
C. Whizzer saw
Which type of glass used for vehicle windows consists of two sheets of glass bonded to a sheet of plastic sandwiched between them?
A. Tempered glass
B. Reinforced glass
C. Laminated safety glass
D. Composite safety glass
C. Laminated safety glass
What is a characteristic of flammable liquids?
A. Can be ignited without being preheated
B. Must be within 5% of their flashpoint to ignite
C. Do not ignite easily, even above their flashpoint
D. Must be heated above their flashpoint before they can be ignited
D. Must be heated above their flashpoint before they can be ignited
Which type of composite building material is also known as plywood or glulam and is often used for roof and floor decking?
A. Particle board
B. Synthetic wood
C. Laminated timber
D. Medium density fiberboard
C. Laminated timber
Which construction type is unlikely to collapse because of the weight-bearing capacity of its large-dimension wood members?
A. Type I
B. Type II
C. Type III
D. Type IV
D. Type IV
What is created using one or more struts and a ratcheting device to apply lateral and upward force to a vehicle to decrease the likelihood of a vehicle tipping over during rescue operations?
A. Winch control system
B. Pnuematic lifting system
C. Triangular vehicle system
D. Tensioned buttress system
D. Tensioned buttress system
Many escalators have manual stop switches located on a nearby wall or:
A. Nearby the entrance to the building
B. In the maintenance room of the building
C. In the closet of the elevator control room
D. On the handrail support at the top and bottom of the unit
D. On the handrail support at the top and bottom of the unit
When containing leaks in pressure containers, any valve operation must be preformed:
A. Immediately upon arrival
B. After an initial foam blanket has been applied
C. In coordination with facility personnel supervision
D. In coordination with a hazmat response team
C. In coordination with facility personnel supervision
Interior lath and plaster walls:
A. Are heat resistant and fire retardant
B. Are found in most modern buildings
C. Can decrease fire growth because of density
D. Can conceal fire within the cavity between surfaces
D. Can conceal fire within the cavity between surfaces
Because walls may collapse inward or outward, a collapse zone should be planned at any fire incident involving ____ construction.
A. Type I
B. Type II
C. Type III
D. Type V
D. Type V
Which collapse pattern is the least likely to contain voids in which live victims may be found?
A. Lean-to
B. Pancake
C. A-frame
D. Cantilever
B. Pancake
If a victim is entangled in a machine that is still running:
A. Immediately turn off the machine
B. Attempt to extricate the victim while the machine is still running
C. Do not turn off the machine until the mechanism has been stabilized
D. Power must be shut down for the entire facility before rescue can occur
C. Do not turn off the machine until the mechanism has been stabilized
Most firefighting foam concentrates are intended to be mixed with ____ percent water.
A. 50 to 75.5
B. 85 to 89.9
C. 90 to 93.5
D. 94 to 99.9
D. 94 to 99.9