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AECT110 > Chapter 13 Multiple choice > Flashcards

Chapter 13 Multiple choice Flashcards

1
Q

What two lumber terms are used synonymously?

A

Lumber and solid sawn lumber

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2
Q

The approximate density of lumber is?

A

35 pcf

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3
Q

The cellular structure of wood consists mainly of what?

A

Hollow, long tubular cells

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4
Q

If we cut a cross section through a tree trunk, we will see a number of rings. The most appropriate term for these rings is what?

A

Growth rings

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5
Q

The walls of wood sells consist primarily of ?

A

Cellulose

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6
Q

The term sapwood and heart wood refer to :

a. two different wood species
b. two different types of wood cells
c. two different parts of the same tree

A

C. Two different parts of the same tree

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7
Q

The difference between softwoods and hardwoods is based on what?

A

botanical characteristics

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8
Q 
Which of the following species of wood is not a softwood?
a. Pine
b. Fir
C. Cedar
D. Oak
E. Red Wood
A

D. Oak wood is not a softwood

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9
Q

Which of the following species of wood is not a hardwood?

a. Teak
b. Balsa Wood
c. Rosewood
d. Oak
e. Redwood

A

E. Rosewood is not a hard wood

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10
Q

Spruce is a softwood species. True or faslse?

A

True

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11
Q

Lumber for structural framing of buildings in North America is generally derived from what?

A

From softwood species

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12
Q

Hardwoods are generally used for fine-quality flooring, furniture, and wall paneling. True or False?

A

True

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13
Q

In the U.S., most structural lumber is grown in what region?

A

Western and Southern regions of the united states

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14
Q

Redwood is mainly grown in which state?

A

California

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15
Q

Which of the following species of wood is naturally decay resistant?

A

Cedar

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16
Q

In a 2x6 stud, the wood grain is parallel to what direction?

A

The vertical direction

17
Q

Wood is stronger along the grain rather than across. True or false?

A

True. Wood is stronger along the grain than across the grain.

18
Q

What type of lumber is usually flat-sawn?

A

Structural Lumber

19
Q

Flat-sawn lumber is dimensionally more stable than quarter-sawn lumber. True or false?

A

False

20
Q

Which of the following terms means the same as quarter-sawn?

a. tangentially sawn
b. Radially sawn

A

B. Radially sawn

21
Q

Fungal decay on wood occurs when the moisture content in wood is between?

A

Between 15% and 25%

22
Q

The moisture content in a piece of lumber has been measured to be 15%. According to the wood industry, this piece of lumber will be classified as what?

A

Dry

23
Q

From the user’s view point, the difference between MC15 and KD15 is generally ignored. True or false?

A

True

24
Q

The terms S-Dry implies that the lumber has been

A

surfaced when its moisture content was less than or equal to 19%

25
Q

The term S2S implies that the wood has been

A

surfaced on two sides

26
Q

Apiece of lumber has been specified as 2in x 4in in cross section. This refers to its

a. Actual cross-sectional dimensions
b. Nominal cross-sectional dimensions

A

A. actual cross sectional dimensions

27
Q

In calculating the board foot measure, we must use the actual dimensions of lumber, not its nominal dimensions. True or false?

A

False

28
Q

Which of the following lumber cross sections is that of a dimension lumber?

a. 4x8
b. 1x8
c. 6x12
d. 1x12

A

A. 4X8 Cross section Dimension lumber are 2 by’s or 4 by’s

29
Q

Which of the following is not a grade of lumber?

a. No1
b. No2
c. No3
d. No4
e. Construction

A

D. No4

30
Q

Which of the following grades can only be used as blocking?

a. No1
b. No2
c. Construction
d. Utility
e. Standard

A

D. Utility

31
Q

Lumber used for structural framing members, such as studs, floor joists, and rafters, is graded using what?

A

Only visual inspection

32
Q

What type of lumber is effective against both fungi and termites?

A

Preservative-treated lumber

33
Q

A termite shield is generally made out of what?

A

galvanized sheet steel

AECT110 (27 decks)

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