Ch.13

Question 1

Commercial occupancies can generally be categorized as either:

Answer 1

• mercantile
• business
• industrial properties

Question 2

The best way to prepare for building hazards is through __________

Answer 2

preplanning

Question 3

The _______ nature of commercial occupancies often call for routine inspection.

Answer 3

Transient nature

Question 4

Consider assignment of more than one _____ when more than one entrance is used.

Answer 4

RIC

Question 5

Search and Rescue efforts must begin in ____________

Answer 5

areas most threatened by fire and smoke

Question 6

Most people tend to leave ________

Answer 6

same way they entered

Question 7

Evacuation for incidents in commercial structures should begin in the _____________

Answer 7

areas of structure most threatened by fire and smoke

Question 8

In early stages of a fire in commercial occupancies, the _________ are evacuated first, then FF work outward from there.

Answer 8

adjacent occupancies

Question 9

Evacuation in large commercial structures can be conducted with:

Answer 9

• public address system
• building alarm system
• fire fighters
• combination

Question 10

Large open areas make confinement difficult because the fire can spread through _________ to uninvolved areas of the building.

Answer 10

convection

Question 11

Large hose lines of ______ are often necessary for commercial structures.

Answer 11

2 1/2”

Question 12

Long, narrow one-story buildings that are partitioned throughout to create a number of separate occupancies

Answer 12

strip center (strip mall)

Question 13

What plays a role in if fire walls were installed:

Answer 13

• age of complex
• size of complex
• type and size of specific occupancy
• existing building codes at time of construction

Question 14

The rear of strip centers usually have a standard single ______ inch swinging door.

Answer 14

32” - 36”

Question 15

Almost every strip mall/strip center has a _______ roof

Answer 15

lightweight wood or metal roof

Question 16

Clear communications between _______ and ______ aspects of an organization are essential to alleviate unknown occupant changes.

Answer 16

prevention and suppression

Question 17

Metal roof decks allow fire to spread through __________

Answer 17

conduction

Question 18

When steel trusses are subjected to fire conditions they ____ and ____ heat causing steel to elongate.

Answer 18

conduct and absorb heat

Question 19

________ is a covered walkway attached to or supported by the main structure on ONE END.

Answer 19

Cantilever

Question 20

Even if only one unit within the strip center appears to contain fire, ________ needs to be evacuated.

Answer 20

The whole building

Question 21

For ventilation the opening used for the exit point should be at least _______ the size of the opening used to pressurize the structure.

Answer 21

one and one half (1 1/2)

Question 22

One way to apply PPV in a strip mall center is to ________________

Answer 22

pressurize the adjoining occupancies, but not the store on fire

Question 23

_______ has enabled builders to create large open spaces.

Answer 23

Steel

Question 24

Load-bearing walls of large commercial structures are constructed of _______________

Answer 24

steel, concrete, or combination of two

Question 25

________ allows the construction of walls to be completed much quicker.

Answer 25

having walls pre-cast

Question 26

The roof coverings of large commercial structures are _______, _______, or ________

Answer 26

• metal deck
• membrane
• pre or post tensioned concrete

Question 27

______ and _____ are two associated roof hazards.

Answer 27

• decorative parapets
• banding
• Constructed of Styrofoam, rigid insulation, and concrete

Question 28

These components are not designed for structural support; they are merely used for decorative purposes:

Answer 28

Styrofoam and plastics

Question 29

Concrete roofs must be stressed in some way to prevent them from cracking and falling down. This is done by running steel cables through the concrete and tightening them on the ends with _____________, which significantly increases tensile strength

Answer 29

turnbuckles

Question 30

Spalling can expose _______ used to provide the wall with more strength.

Answer 30

rebar

Question 31

Typical definition of heavy timber is considered __________

Answer 31

8” x 8”

*common 12 x12

Question 32

_______ tends to act as an insulator. With the fire charring or pyrolyzing the wood, the fire actually helps the structural supports withstand destruction for longer periods of time.

Answer 32

Charring

Question 33

Steel, Wood, and concrete columns are common structures built in the ________ and ______ centuries.

Answer 33

20th and 21st centuries

Question 34

Roofs of 2 or 3 story commercial structures are typically ____________

Answer 34

Flat, metal deck, with insulation and tar and gravel

Question 35

The most common type of floor in 2 or 3 story commercial structures is _______

Answer 35

concrete

Question 36

The roof of taxpayers structures use wood sizes typically larger than 2 x 4’s and are secured using _______ rather than gusset plates.

Answer 36

nails or spikes

Question 37

Steel roofs are typically covered with ____________

Answer 37

metal skin and topped with rigid insulation, tar, and gravel

Question 38

Roofs that resemble the inner tube of a bike tire are ________

Answer 38

• stretched rubber membrane
• Have spongy feeling that is normal for the system
• Difficult to cut through, as it gums up the saw blade

Question 39

The way to prevent autoexposure is to train hose streams on:

Answer 39

exterior of structure above where fire is venting and attempting to spread vertically. Water will cascade down the structure and significantly decrease or completely stop the fires exterior vertical spread

Question 40

A chemical change in wood resulting from the action of heat:

Answer 40

Pyrolyzing

Question 41

The loss of surface concrete, sometimes forcefully, that occurs when the moisture in concrete is subjected to fire or exposed to heat:

Answer 41

Spalling