Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Building Construction Ifsta > Chpt 7 > Flashcards

Chpt 7 Flashcards

1
Q

Wood is stronger in a direction ____ to the grain than against the grain

A

Parallel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The allowable compressive strength parallel to the grain varies from _____ for commercially available grades and species of lumber

A

325 to 1700 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

On the basis of strength to unit weight, wood has a tensile strength comparable to

A

Steel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Wood has a useful

A

Tensile strength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Typical defects in wood, however, greatly reduce this comparison, so the allowable tensile strength of wood is about

A

700 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

It is possible to dry lumber to any moisture content,but most structural lumber has a moisture content of

A

19 percent or less

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Can be defined as lengths of squared would also known as dimensional wood use for construction

A

Lumber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The grading of _____ permits it to be used more economically by allowing the designer to specify a higher grade where it is needed and a less expensive, lower grade is less critical members

A

Lumber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Boards have a nominal thickness of_____or less

A

2 inches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Dimensional lumber has a nominal thickness of up____ or more

A

2 to 4 inches or more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Laminated wood members are produced by joining flat strips of wood with glue. The beams produced by this method are known as

A

Glulam beams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The advantage to producing _______ is that sizes and shapes can be produced that are not available from solid pieces cut from logs

A

Laminated structural members

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Three types of joints can be used to join laminated members end to end. These are the _____

A

Butt joint
Scarf joint
Finger joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The ____ is easy to produce but cannot be used where tensile forces are to be transmitted along the length of the beam.

A

Butt joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The _____ can be used to transmit tensile forces

A

Scarf and finger joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Is produced by peeling sheets of veneer from the outer portion of the log

A

Laminated veneer lumber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Is made from the outer most veneers peeled from a log that are not as uniform as those used in LVL

A

Parallel strand lumber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Is produced by taking long strands of word up to 12 inches in length and bonding them with a resin in a steam pressing process

A

Laminated strand lumber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Is the strongest of the SCL products and can be used for heavily loaded columns and long spans

A

PSL parallel strand board

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Finds applications in I joints and beam sections 1 3/4 to 3 1/2 inches thick

A

LVL laminated veneer lumber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Is typically used for short span beams and columns

A

LSL laminated strand lumber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Are made up of several thin layers or veneers that are rotary sliced from rotating logs and glued together

A

Plywood panels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Uses long strand like wood particles that are compressed and glued into three to five layers

A

Oriented strand board

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Is made from wood particles bonded with synthetic resins under heat and pressure

A

Particleboard

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Particleboard is sometimes refered to as

A

Flake board, chipboard, shavings board

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Because it can be manufactured in large sheets,_____ is used for flooring and manufactured and mobile homes

A

Particle board

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Consist of a face and back panel such as plywood or OSB bonded to a central core material

A

Composite panels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Wood panel products are graded for their structural use in their exposure durability. A great game appears on the back of the structural panel that indicate it’s intended structural application and it suitability for exposure to water. The span rating of_____indicates that the panel may be used as roof sheathing on rafters 3 inches apart or as sub flooring on joists 16 inches apart

A

The span rating of 32/16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Wood trusses are sometimes categorized as

A

Light frame trusses
Heavy timber trusses
Split ring trusses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Are made up of 2 inch nominal members that are all in the same plane

A

Light frame trusses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Pose a special problem for firefighters because the relatively slender wood members used to construct the trust will fail earlier in a fire then the heavier members used in the past

A

Light frame wood trusses

32
Q

Are made up of members up to 8 to 10 inches

A

Heavy timber trusses

33
Q

A _____ makes use of a short circular piece of steel within and between two adjacent wood members to transfer the load between the members

A

Split ring trusses

34
Q

With a ______, a bolt with a thrust washer is run through the split ring to hold the members together

A

Split ring connector

35
Q

One serious and fundamental drawback to wood as a building material is its

A

Combustiblity

36
Q

Ignition temperature for wood are difficult to measure precisely because the ignition temperature of wood is affected by such variables as the following

A 
Density of wood 
Size and form of the wood 
Moisture content 
Rate of heating 
Nature of heating source 
Air supply
37
Q

Is the thermal decomposition of wood and begins at a temperature somewhere below approximately 392 degrees F

A

Pyrolysis

38
Q

The ____ of a fuel is the total amount of thermal energy that could be released if the fuel were completely burned

A

Heat of combustion

39
Q

The heat of combustion is measured in

A

BTUs British thermal units

40
Q

The severity of the fire is not determined only by the total amount of fuel available. The rate at which a fuel is consumed and, therefore, the rate at which energy is released determines

A

Fire growth and severity

41
Q

A greater surface area for a given mass of wood permits a more rapid combining a fuel vapors and air for combustion and, therefore an overall greater rate of burning

A

Surface to mass ratio

42
Q

The relationship between surface area and mass is the

A

Surface to mass ratio

43
Q

resists ignition and has increased fire endurance when compared with non-treated wood

A

Fire retardant treated wood

44
Q

The two main methods of fire retardant treatment are

A

Pressure impregnation and surface coating

45
Q

Is used primarily to reduce the surface burning of wood ie the flame spread rating

A

Surface coating

46
Q

Most _____ operate by accelerating the formation of charring in the wood when the wood is exposed to heat

A

Fire retardant chemicals

47
Q

The chemical reaction of the ______ is intended to occur at temperatures lower than those that are developed in fires

A

Fire retardant

48
Q

Is a wood like product produced from wood fiber and poly ethylene or polyvinylchloride

A

Thermoplastic composite lumber

49
Q

It’s main application is in the construction of outside decks and railings

A

Thermal plastic composite lumber

50
Q

Thermal plastic composite lumber is a combustible product with a flame spread rating of

A

80

51
Q

Is very commonly used in frame structural systems

A

Wood

52
Q

The wood framing system is most frequently encountered can be broadly classified into two basic types

A

Timber framing and light wood framing

53
Q

Because of labor costs and limitations in the basic strength of the wood, most wood frame frame buildings do not exceed

A

Three stories

54
Q

Because they are more massive and have a lower surface area to mass ratio, ____ display greater structural endurance under fire conditions than members used in light frame construction

A

Heavy timber

55
Q

In modern construction, ____ are used only in rare cases where the designer desires a particular artistic or quaint appearance

A

Mortise and tenon joints

56
Q

The glulam beams are used frequently in _____ construction where greater lengths are required

A

Heavy timber

57
Q

Is a form of wood frame construction in which the columns and the beans are of dimensions less than those used in heavy timber framing but greater than those used in light frame construction

A

Post and beam

58
Q

The most popular form of wood framing is known as

A

Light wood frame construction

59
Q

In ____, the exterior wall studs are continuous from the foundation to the roof

A

Ballon framing

60
Q

The vertical combustible spaces between the studs in _____ provide a channel for the rapid communication of fire from floor to floor.

A

Ballon fame construction

61
Q

In ____ the exterior wall vertical studs are not continuous to the second floor

A

Platform framing

62
Q

To prevent the rapid spread of fire through the concealed spaces within combustible construction, building code require

A

Fire stopping

63
Q

In a platform frame building, the plate installed on the top of the studs provides an inherit _____ that will act to block the spread of fire from floor to floor within the walls

A

Fire stop

64
Q

Building codes require ____ in the attic spaces of combustible construction

A

Draft stopping

65
Q

Is installed on the outside of the studs to provide structural stability, insulation, and an underlayer for the siding

A

Sheathing

66
Q

A layer of ____ is provided between the sheathing and the siding to act as a vapor barrier

A

Building paper

67
Q

A wood frame building, like other buildings, can be provided with an exterior facing of brick. Such construction is termed

A

Brick veneer

68
Q

One frequently use rule is that in a brick bearing wall every sixth course of brick is a ____with the ends of the brick facing out

A

Header course

69
Q

An ____ enhances appearance and provides a measure of thermal insulation

A

Interior finish

70
Q

Where a degree of fire resistance is required, the ____ materials most commonly used are gypsum board or plaster

A

Interior finish

71
Q

When the structural framing of a wood frame building, including the floor and roof construction, is provided with protection to achieve a 1 hour fire resistance, the building can be classified as

A

Type Va

72
Q

If a wood frame building is equipped an automatic sprinkler system, the code may permit the elimination of the

A

1 hour structural fire resistance

73
Q

The combustible voids inherent in ____ provides paths for the rapid spread of fire through a structure

A

Light wood frame

74
Q

As urban development moves into rustic wildland areas, a serious problem develops. Fires in the often highly flammable vegetation can rapidly engulf and destroy structures. Structures of light wood frame construction are especially vulnerable. The problem has been particularly serious in the western part of the United States. To protect property in these areas jurisdictions have adopted code requirement to make buildings

A

Ignition resistant

75
Q

Is intended to decrease the vulnerability of structures to exposure from wildland fires

A

Ignition resistance

76
Q

The distinguishing characteristic of a wood frame building is that the basic structural system is

A

Combustible

Building Construction Ifsta (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions