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Building Construction Ifsta > Chpt 11 > Flashcards

Chpt 11 Flashcards

1
Q

Are the easiest roofs on which firefighters can work

A

Flat roofs

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2
Q

Have inclined surfaces

A

Pitched roofs

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3
Q

Have a slope of up to 3 to 12 meaning for each 12 units of horizontal dimension the roof slopes upward 3 units

A

Low slope roofs

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4
Q

Have slopes of 4/12 to 12/12

A

Medium to high slope roofs

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5
Q

The simplest pitched roof is the ____ that slopes in only one direction

A

Shed roof

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6
Q

The _____ is a very common roof style that consists of two inclined surfaces that meet at their high side to form a ridge

A

Gable roof

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7
Q

The _____ slopes in four directions and has a degree of slope similar to the gable roof

A

Hip roof

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8
Q

Slope in two directions, but there will be a break in the slope on each side.

A

Gambrel roofs

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9
Q

Are functional because the space created by the roof can be used as an attic or living space

A

Gambrel roof

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10
Q

A_____ has the break in the slope of the roof on all four sides

A

Mansard roof

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11
Q

The ____ is a roof style that slopes in two directions basically two shed roofs that meet at their low eaves

A

Butterfly roof

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12
Q

A___ is designed to provide light and ventilation

A

Monitor roof

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13
Q

The vertical sides of this monitor section, which are normally openable windows, are known as

A

Clerestories

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14
Q

We’re also once commonly used on industrial buildings for light and ventilation

A

Sawtooth roofs

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15
Q

A ____ is designed to shed water and snow

A

Pitched roof

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16
Q

The pitch of a roof presents a major hazard to firefighters because the steepness of the roof results in a

A

Lack of secure footing

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17
Q

Curved roofs are most frequently supported by

A

Arches and bowstring trusses

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18
Q

When the area to be enclosed by the roof is circular, a____ can be used

A

Dome roof

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19
Q

A dome can be thought of as an _____

A

Arch rotated 360 degrees

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20
Q

A _____produces structural forces similar to those of an arch

A

Dome roof

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21
Q

More architecturally spectacular curved roofs can be created using geodesic domes or

A

Lamella arches

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22
Q

The ____ is a special form of arched roof

A

Lamella arch

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23
Q

The short lamellas are bolted together in a diagonal pattern with a special plate known as a

A

Lamella washer

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24
Q

A____ is created using spherical triangulation

A

Geodesic dome

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25
A____ is frequently provided in buildings with pitched roofs to increase the usable space in attic by increasing the light and ventilation.
Dormer
26
Several methods are used to support flat roofs. The simplest system uses ordinary wood joists supported at either end by a
Load bearing wall
27
The traditional wood joist roof uses solid wood joists that tend to lose their strength gradually as they burn. This loss of strength results in the roofs becoming soft or spongy before failure, especially with a
Wood plank roof deck
28
Therefore in general, firefighters should view any indication of advanced or heavy fire development as a warning sign that
The roof is wearing
29
Fireproofing can be omitted from roof supports when the roof is located more than _____ above the floor in an assembly occupancy
20 ft
30
A variation of the flat roof is a type known as the
Inverted roof
31
Are the inclined joists used to support some type of pitched roofs
Rafters
32
Are the standard supports used in shed, gable, hip, gambrel, and mansard style roofs, although trusses can also be used for these roof types
Rafters
33
Are very common roof support system
Trusses
34
That is, all of its chords and diagonal members lie in the same plane
Monoplane trusses
35
Which use a curved top chord, were once commonly used for roofs and many remain in use
Bowstring trusses
36
This assembly uses split ring connectors at all joints except the heel plates located at the ends of the truss
Bowstring trusses
37
The _____ trusses are the most commonly types used for pitched roofs
Fink and Pratt style trusses
38
The ____ is the portion of roof construction to which the roof covering or roofing is applied
Deck of a roof
39
Corrugated steel decking can be used with a sheet of flat steel welded to the bottom to form
Cellar decking
40
The ____ provides the water resistant barrier for the roof system
Roof coverings
41
In addition to the roof decking previously described, a flat roof usually consists of several component layers that include the following
``` Vapor barrier Thermal insulation Roofing membrane Drainage layer Wear course ```
42
The _____ is designed to reduce the diffusion of interior moisture into the insulation layer.
Vapor barrier
43
The _____ reduces heat loss through the roof
Thermal insulation
44
The _____ of a roof consists of water proof material that keeps rain out and snow from the interior of the building
Membrane
45
Use several overlapping layers of roofing felt saturated with a bituminous material that may be either tar or asphalt
Built up membranes
46
A______roof consists of a single membrane laid in sheets on the roof deck
Single ply membrane
47
Single ply membranes are made from several materials. The most common is the synthetic rubber material, ________
Ethylene propylene diene monomer EPDM
48
The ____ are useful for buildings with curved roof surfaces such as domes that would be difficult to cover with other materials
Fluid applied membranes
49
The _____ permits the free movement of rain water to the roof drains
Drainage layer
50
The _____ protects the roof from mechanical abrasion
Wear course
51
Built up roofs that use gravel as the wear course are commonly known as ______
Tar and gravel roofs
52
Roof coverings used on pitched roofs are generally one of two broad categories
Shingle or tile roofs and metal roofs
53
Are small overlapping units that are relatively easy for workers to handle
Shingles and tiles
54
Are available as wood shingles and shakes, asphalt shingles, slate, and clay and concrete tiles
Shingles and tiles
55
Are thin, tapered slabs of wood that are sawn from pieces of tree trunk.
Wood shingles
56
Are split from the wood either by hand or by machine and are thicker than shingles
Shakes
57
Are produced from heavy sheets of asphalt impregnated felt made from rag, paper, or wool fiber.
Asphalt shingles
58
Is produced from hard rock that has a tendency to split along one plane
Slate
59
Is a very durable material and can have a life expectancy of 150 years
Slate
60
Is also a heavy material, weighing 8 to 36 pounds per square foot
Slate
61
The curved clay tiles are known as _____ and are used to create imitation Spanish style architecture
Mission tiles
62
Are made from Portland cement, aggregate, and water
Concrete tiles
63
Are noncombustible and produce fire resistant roof coverings that have excellent resistance to flying brands
Clay, slate, and cement tiles
64
Make use of several materials including galvanized iron or steel, copper, zinc, aluminum, and lead
Metal roof coverings
65
One problem with metal roofing is the potential for galvanic action when dissimilar metals are in contact. For example, using steel nails with copper sheeting. To prevent this interaction, ____
Nails made of the same metal as the sheeting are used
66
Are effective against a severe fire exposure
Class a roof coverings
67
Are effective against a moderate fire exposure
Class b roof coverings
68
Are effective against a light fire exposure
Class c coverings
69
A____ is a buildings first line defense against the elements
Roof
70
As such, roofs deteriorate over the years from exposure to wind, snow, and rain. In some cases the surface of a roof becomes so deteriorated that it cannot be easily repaired. To solve this problem, a second roof, sometimes termed a _____ can be constructed over the original roof
Rain roof
71
A _____ involves the use of the roof surface of a building for a rooftop garden
Green roof

Building Construction Ifsta (11 decks)

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