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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
Q

A____ is frequently provided in buildings with pitched roofs to increase the usable space in attic by increasing the light and ventilation.

A

Dormer

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26
Q

Several methods are used to support flat roofs. The simplest system uses ordinary wood joists supported at either end by a

A

Load bearing wall

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27
Q

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

A

Wood plank roof deck

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28
Q

Therefore in general, firefighters should view any indication of advanced or heavy fire development as a warning sign that

A

The roof is wearing

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29
Q

Fireproofing can be omitted from roof supports when the roof is located more than _____ above the floor in an assembly occupancy

A

20 ft

30
Q

A variation of the flat roof is a type known as the

A

Inverted roof

31
Q

Are the inclined joists used to support some type of pitched roofs

A

Rafters

32
Q

Are the standard supports used in shed, gable, hip, gambrel, and mansard style roofs, although trusses can also be used for these roof types

A

Rafters

33
Q

Are very common roof support system

A

Trusses

34
Q

That is, all of its chords and diagonal members lie in the same plane

A

Monoplane trusses

35
Q

Which use a curved top chord, were once commonly used for roofs and many remain in use

A

Bowstring trusses

36
Q

This assembly uses split ring connectors at all joints except the heel plates located at the ends of the truss

A

Bowstring trusses

37
Q

The _____ trusses are the most commonly types used for pitched roofs

A

Fink and Pratt style trusses

38
Q

The ____ is the portion of roof construction to which the roof covering or roofing is applied

A

Deck of a roof

39
Q

Corrugated steel decking can be used with a sheet of flat steel welded to the bottom to form

A

Cellar decking

40
Q

The ____ provides the water resistant barrier for the roof system

A

Roof coverings

41
Q

In addition to the roof decking previously described, a flat roof usually consists of several component layers that include the following

A 
Vapor barrier 
Thermal insulation 
Roofing membrane 
Drainage layer 
Wear course
42
Q

The _____ is designed to reduce the diffusion of interior moisture into the insulation layer.

A

Vapor barrier

43
Q

The _____ reduces heat loss through the roof

A

Thermal insulation

44
Q

The _____ of a roof consists of water proof material that keeps rain out and snow from the interior of the building

A

Membrane

45
Q

Use several overlapping layers of roofing felt saturated with a bituminous material that may be either tar or asphalt

A

Built up membranes

46
Q

A______roof consists of a single membrane laid in sheets on the roof deck

A

Single ply membrane

47
Q

Single ply membranes are made from several materials. The most common is the synthetic rubber material, ________

A

Ethylene propylene diene monomer EPDM

48
Q

The ____ are useful for buildings with curved roof surfaces such as domes that would be difficult to cover with other materials

A

Fluid applied membranes

49
Q

The _____ permits the free movement of rain water to the roof drains

A

Drainage layer

50
Q

The _____ protects the roof from mechanical abrasion

A

Wear course

51
Q

Built up roofs that use gravel as the wear course are commonly known as ______

A

Tar and gravel roofs

52
Q

Roof coverings used on pitched roofs are generally one of two broad categories

A

Shingle or tile roofs and metal roofs

53
Q

Are small overlapping units that are relatively easy for workers to handle

A

Shingles and tiles

54
Q

Are available as wood shingles and shakes, asphalt shingles, slate, and clay and concrete tiles

A

Shingles and tiles

55
Q

Are thin, tapered slabs of wood that are sawn from pieces of tree trunk.

A

Wood shingles

56
Q

Are split from the wood either by hand or by machine and are thicker than shingles

A

Shakes

57
Q

Are produced from heavy sheets of asphalt impregnated felt made from rag, paper, or wool fiber.

A

Asphalt shingles

58
Q

Is produced from hard rock that has a tendency to split along one plane

A

Slate

59
Q

Is a very durable material and can have a life expectancy of 150 years

A

Slate

60
Q

Is also a heavy material, weighing 8 to 36 pounds per square foot

A

Slate

61
Q

The curved clay tiles are known as _____ and are used to create imitation Spanish style architecture

A

Mission tiles

62
Q

Are made from Portland cement, aggregate, and water

A

Concrete tiles

63
Q

Are noncombustible and produce fire resistant roof coverings that have excellent resistance to flying brands

A

Clay, slate, and cement tiles

64
Q

Make use of several materials including galvanized iron or steel, copper, zinc, aluminum, and lead

A

Metal roof coverings

65
Q

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, ____

A

Nails made of the same metal as the sheeting are used

66
Q

Are effective against a severe fire exposure

A

Class a roof coverings

67
Q

Are effective against a moderate fire exposure

A

Class b roof coverings

68
Q

Are effective against a light fire exposure

A

Class c coverings

69
Q

A____ is a buildings first line defense against the elements

A

Roof

70
Q

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

A

Rain roof

71
Q

A _____ involves the use of the roof surface of a building for a rooftop garden

A

Green roof

Building Construction Ifsta (11 decks)

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