Question 1

Wood certified by the Forest Stewardship Council (FSC)is available

Accepted Answer

A) in the United States and Canada. 
B) only in the United States. 
C) in the United States, Canada, and Mexico. 
D) in C and several other countries. 
A) in the United States and Canada. 
B) only in the United States. 
C) in the United States, Canada, and Mexico. 
D) in C and several other countries.

Question 2

Preservative- treated lumber is effective

Accepted Answer

A) only against termite attack. 
B) only against fungal attack. 
C) against both fungi and termites. 
A) only against termite attack. 
B) only against fungal attack. 
C) against both fungi and termites.

Question 3

Can a 2 × 4 member carry the grade of "No.1"? The grade of "Select Structural"?

Accepted Answer

The answer of Can a 2 × 4 member carry...

Question 4

What is (are)the essential difference(s)between the materials called lumber, sold lumber, and solid sawn lumber?

Accepted Answer

None, they

Question 5

The term S2S implies that the lumber has been

Accepted Answer

A) sawed from two sides. 
B) surfaced on two sides. 
C) sawed twice. 
D) none of the above. 
A) sawed from two sides. 
B) surfaced on two sides. 
C) sawed twice. 
D) none of the above.

Question 6

A retailer of building materials purchased 1,000 pieces of 2 × 12 lumber, each 10 ft long. How many board feet did the retailer purchase?

Accepted Answer

A) 20,000 bd ft 
B) 1,000 bd ft 
C) 100,000 bd ft 
D) 10 MBF 
E) None of the above 
A) 20,000 bd ft 
B) 1,000 bd ft 
C) 100,000 bd ft 
D) 10 MBF 
E) None of the above

Question 7

The weight of a piece of lumber is 2 lb. The weight of the same piece after it is fully dried is 1.8 lb. What was the original moisture content in the wood?

Accepted Answer

A) 9% 
B) 15% 
C) 11% 
D) 7% 
E) None of the above 
A) 9% 
B) 15% 
C) 11% 
D) 7% 
E) None of the above

Question 8

Trees from which lumber is obtained are divided into two broad categories-softwood trees and hardwood trees. Is the distinction between the two based on the strength of wood obtained from them, their botanical differences, or both? Explain.

Accepted Answer

The distinction is b

Question 9

With the help of a sketch, explain how machine- rated lumber is graded. What information does the grade of machine- rated lumber provide?

Accepted Answer

Machine-rated lumber is graded based on

Question 10

The term S- DRY implies that the lumber has been

Accepted Answer

A) sawed when its moisture content was c 25%. 
B) surfaced when its moisture content was c 25%. 
C) surfaced when its moisture content was c 19%. 
D) sawed when its moisture content was c 19%. 
E) stored in a dry climate. 
A) sawed when its moisture content was c 25%. 
B) surfaced when its moisture content was c 25%. 
C) surfaced when its moisture content was c 19%. 
D) sawed when its moisture content was c 19%. 
E) stored in a dry climate.

Question 11

Is fire- retardant- treated (FRT)wood considered by codes as noncombustible material? Explain.

Accepted Answer

No, but the building codes all

Question 12

We often see a lumber grade stamp with an "S- P- F" mark, implying that the lumber species may be Spruce, Pine, or Fir. "Hem- Fir" mark is another example of combining two or more species-Hemlock and Fir. What is the reason for combining different species into one group?

Accepted Answer

Although the species are diffe

Question 13

Redwood is grown mainly in

Accepted Answer

A) Florida. 
B) Texas. 
C) Oklahoma. 
D) California. 
E) Arizona. 
A) Florida. 
B) Texas. 
C) Oklahoma. 
D) California. 
E) Arizona.

Question 14

Hardwood species are generally stronger than softwood species. So, why are softwood species generally used in structural framing members?

Accepted Answer

Softwood species are generally

Question 15

A wood member weighs 10 lb. It is now fully dried, i.e., until it contains no water. Its dry weight is 8 lb. What was the moisture content (MC)in its original, moist condition?

Accepted Answer

The amount of water in wood in

Question 16

The actual dimensions of 2 × 12 lumber are

Accepted Answer

A) 1- 1/2 in. × 11 in. 
B) 1- 3/4 in. × 11- 3/4 in. 
C) 1- 1/2 in. × 11- 1/2 in. 
D) 1- 1/2 in. × 11- 3/4 in. 
E) none of the above. 
A) 1- 1/2 in. × 11 in. 
B) 1- 3/4 in. × 11- 3/4 in. 
C) 1- 1/2 in. × 11- 1/2 in. 
D) 1- 1/2 in. × 11- 3/4 in. 
E) none of the above.

Question 17

The basis for distinguishing lumber as board, dimension lumber, and timber is the

Accepted Answer

A) length of lumber. 
B) durability of lumber. 
C) species of lumber. 
D) cross- sectional dimensions of lumber. 
E) strength of lumber. 
A) length of lumber. 
B) durability of lumber. 
C) species of lumber. 
D) cross- sectional dimensions of lumber. 
E) strength of lumber.

Question 18

What is the difference between heartwood and sapwood? Explain.

Accepted Answer

Heartwood and sapwood are two different

Question 19

Describe the essential differences between softwood and hardwood trees. Give at least three commonly used species of each.

Accepted Answer

Softwood and hardwood trees differ in se

Question 20

In a 2 × 6 stud, the wood grain is parallel to the

Accepted Answer

A) vertical direction. 
B) 6- in. dimension. 
C) 2- in. dimension. 
A) vertical direction. 
B) 6- in. dimension. 
C) 2- in. dimension.

Exam 13: Materials for Wood Construction-I Lumber

Wood certified by the Forest Stewardship Council (FSC)is available

Preservative- treated lumber is effective

Can a 2 × 4 member carry the grade of "No.1"? The grade of "Select Structural"?

What is (are)the essential difference(s)between the materials called lumber, sold lumber, and solid sawn lumber?

The term S2S implies that the lumber has been

A retailer of building materials purchased 1,000 pieces of 2 × 12 lumber, each 10 ft long. How many board feet did the retailer purchase?

The weight of a piece of lumber is 2 lb. The weight of the same piece after it is fully dried is 1.8 lb. What was the original moisture content in the wood?

Trees from which lumber is obtained are divided into two broad categories-softwood trees and hardwood trees. Is the distinction between the two based on the strength of wood obtained from them, their botanical differences, or both? Explain.

With the help of a sketch, explain how machine- rated lumber is graded. What information does the grade of machine- rated lumber provide?

The term S- DRY implies that the lumber has been

Is fire- retardant- treated (FRT)wood considered by codes as noncombustible material? Explain.

We often see a lumber grade stamp with an "S- P- F" mark, implying that the lumber species may be Spruce, Pine, or Fir. "Hem- Fir" mark is another example of combining two or more species-Hemlock and Fir. What is the reason for combining different species into one group?

Redwood is grown mainly in

Hardwood species are generally stronger than softwood species. So, why are softwood species generally used in structural framing members?

A wood member weighs 10 lb. It is now fully dried, i.e., until it contains no water. Its dry weight is 8 lb. What was the moisture content (MC)in its original, moist condition?

The actual dimensions of 2 × 12 lumber are

The basis for distinguishing lumber as board, dimension lumber, and timber is the

What is the difference between heartwood and sapwood? Explain.

Describe the essential differences between softwood and hardwood trees. Give at least three commonly used species of each.

In a 2 × 6 stud, the wood grain is parallel to the

An Overview of the Building Delivery Process How Buildings Come Into Being

Design and Constructions Regulations

Loads on Buildings

Load Resistance the Structural Properties of Materials

Properties of the Envelope-I Thermal Properties

Properties of the Envelope-II Air and Water Vapor Control

Fire and Smoke-Related Properties

Acoustical Properties of Materials

Principles of Joints and Sealants Expansion and Contraction Control

Principles of Sustainable Construction

Soils and Excavations

Below-Grade Construction Foundation Systems and Basements

Materials for Wood Construction-Ii Engineered Wood Products, Fasteners, and Connectors

Wood Light-Frame Construction-I

Wood Light-Frame Construction-II

Structural Insulated Panel Construction

Material Steel and Steel Components

Structural Steel Construction

Cold-Formed Steel Construction

Lime, Portland Cement, and Concrete

Concrete Construction-I Formwork, Reinforcement, and Slabs-On-Ground

Concrete Construction-II Site-Cast and Precast Concrete Framing Systems

Masonry Materials-I Mortar and Brick

Masonry Materials-II Concrete Masonry Units, Natural Stone, and Glass Masonry Units

Masonry and Concrete Bearing Wall Construction

Exterior Wall Cladding-I Principles of Rainwater Infiltration Control

Exterior Wall Cladding-II Masonry, Precast Concrete, and Gfrc

Exterior Wall Cladding-III Stucco, Adhered Veneer, Eifs, Natural Stone, and Insulated Metal Panels

Glass, Glazing, and Light-Transmitting Plastics

Windows and Doors

Exterior Wall Cladding-Iv Wall System in Glass

Roofing-I Low-Slope Roofs

Roofing-I Steep Roofs

Stairs

Floor Coverings

Ceilings

Filters