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M&M 1 > Slide 2 > Flashcards

Slide 2 Flashcards

1
Q

What does seasoning green wood do?

A

Reduces moisture content

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2
Q

What are the three methods of seasoning?

A

Air drying, forced air drying, kiln drying

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3
Q

Benefits of kiln drying includes the control kilns have over:

A

Temperature, humidity, air pressure, air circulation

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4
Q

What does controlled seasoning minimize?

A

Loss of wood value by reducing effects of drying

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5
Q

What is not the same as natural defects?

A

Lumber defects

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6
Q

What is a check?

A

A separation of wood fibres along the rays perpendicular to growth rings

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7
Q

What causes checks?

A

The surfaces of wood dries faster than its interior

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8
Q

What is a shake?

A

A separation of wood fibres along the growth rings

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9
Q

When do shakes occur?

A

During the growth of the tree

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10
Q

What is a split?

A

A complete separation of wood fibres at the end of a member

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11
Q

What causes splits?

A

A weakness that occurred during growth and was aggravated during drying

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12
Q

What is a wane?

A

An absence of wood or presence of bark at the corner or edge

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13
Q

What do wanes, knots, checks, splits, and shakes do?

A

Reduce the strength of wood

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14
Q

What produces a knot?

A

Branches

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15
Q

What are included in seasoning defects?

A

Crook, bow, cup, twist

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16
Q

What can happen when the moisture content is further reduced?

A

Splits

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17
Q

What are 4 pros of using wood?

A

Easily cut and worked, easily fastened, good insulating properties, doesn’t readily transmit sound

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18
Q

What are 4 cons of using wood?

A

Shrinks and swells in response to moisture, prone to warping, susceptible to decay, combustible

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19
Q

What type of material is wood?

A

Organic

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20
Q

What are three degradations that wood is subject to?

A

Fungal decay, insects, weathering

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21
Q

What are the 3 basic types of loading?

A

Compression, tension, shear

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22
Q

Wood is stronger:

A

Parallel to the grain

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23
Q

A load on a beam or a joist creates:

A

Compression and tension

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24
Q

When opposite forces push on a wood member (narrow plane), it is called a:

A

Shear

25
Q

What are the 2 types of loads?

A

Dead load and live load

26
Q

What consists of dead load?

A

The weight of all building materials

27
Q

What consists of live loads?

A

People, furniture, appliances, weather, etc

28
Q

What is the thickness of softwood boards?

A

Less than 2 inches

29
Q

What is the thickness of softwood dimension lumber?

A

2-4 inches

30
Q

What is the thickness of softwood timbers?

A

5 inches or more

31
Q

What is the most common type of lumber used in structural framing?

A

Dimension lumber

32
Q

2X lumber is typically surfaced as:

A

S4S

33
Q

What is usually shipped in green condition?

A

Timbers

34
Q

Price of lumber is quoted in terms of:

A

1000 board foot measure

35
Q

How do you calculate Board Feet?

A

Multiply dimensions and divide by 12

36
Q

How would you calculate MBF?

A

Divide board feet by 1000

37
Q

What is used to join two lumber pieces to make it longer?

A

Finger joints

38
Q

Are finger-jointed members as strong as a single length member?

A

Yes

39
Q

Can glued finger joints be of different species groups?

A

No

40
Q

What does SPS stand for?

A

Special Products Standard

41
Q

What loads can SPS-1 handle?

A

Vertical and Horizontal

42
Q

Can finger-jointed structural lumber handle vertical and horizontal loading?

A

Yes

43
Q

Is SPS-1 for finger-jointed structural lumber or stud lumber?

A

Structural lumber

44
Q

What loads can SPS-3 handle?

A

Vertical

45
Q

Can finger-jointed stud lumber handle vertical and horizontal loading?

A

No

46
Q

What SPS is for finger-jointed stud lumber?

A

SPS-3

47
Q

What shape resists being distorted when loaded from any direction?

A

A triangle

48
Q

What can wood trusses be used for?

A

Roof truss and floor truss

49
Q

What is used to connect top and bottom chords in a truss?

A

Nail plates

50
Q

Are roof trusses made on site or in a factory?

A

Factory

51
Q

How are plywood panels made?

A

By gluing wood veneers with heat and pressure

52
Q

What equalizes the strength of a plywood panel?

A

Cross-graining

53
Q

What is the common plywood panel size?

A

4ftX8ft

54
Q

What does DFP stand for?

A

Douglas Fir Plywood

55
Q

What does CSP stand for?

A

Canadian Softwood Plywood

56
Q

What does OSB stand for?

A

Oriented Strand Board

57
Q

How is OSB and waferboard made?

A

By bonding strands or wafers of wood

58
Q

Pros of OSB?

A

Good strength, stability, nail holding properties

M&M 1 (6 decks)

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