Question 1

Name at least four engineered wood products.

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Question 2

Nail popping is primarily a problem in floor sheathing and is caused by the shrinkage of floor sheathing.

Accepted Answer

Nail popping is primarily a problem in walls and ceilings, not floor sheathing, and is caused by the movement of drywall or the expansion and contraction of framing members, not the shrinkage of floor sheathing.

Question 3

The depth of a glulam beam (vertical dimension)is generally a multiple of a certain dimension. What is that dimension?

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Question 4

The adhesives used in making engineered wood products contain

Accepted Answer

The adhesives used in making engineered wood products typically contain formaldehyde as a binding agent. This can release volatile organic compounds (VOCs) over time which can be harmful to human health. However, some manufacturers now offer formaldehyde-free options.

Question 5

Gaseous emissions produced by engineered wood products decrease over time.

Accepted Answer

As engineered wood products age, the adhesives and chemicals that were used in the manufacturing process continue to cure and emit fewer gaseous emissions over time. Research has shown that emissions from engineered wood products can decrease by up to 80% after one to two years of installation. However, it is important to note that some products may continue to emit small amounts of gaseous emissions throughout their lifespan.

Question 6

The nails most commonly used in wood frame construction are

Accepted Answer

The nails most commonly used in wood frame construction are 6d, 8d, 10d, and 16d. They are used for different purposes- 6d for attaching thin trim and molding, 8d for framing and general construction, 10d for attaching deck boards and railing, and 16d for heavy framing like joists and beams.

Question 7

An unbalanced glulam beam can only be used as a single- span beam, while a balanced glulam beam can be used in all situations. Why then, are unbalanced glulam beams made?

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Question 8

What does the acronym LVL stand for?

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Question 9

Laminated veneer lumber (LVL)and plywood members are both made by gluing together approximately
1/8- in.- thick wood veneers. What is the difference between the two members in how the wood grain in veneers is oriented?

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Question 10

What is a balanced glulam beam?

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Question 11

Explain what a laminated veneer lumber (LVL)member is and what it is typically used for.

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Question 12

Nails work best when they are subjected to

Accepted Answer

Nails work best when they are subjected to shear forces, which is a type of force that occurs when two surfaces slide against each other in opposite directions. Shear force is what keeps nails securely in place in wood or other materials. Tension, on the other hand, is a force that stretches or pulls a material apart, and is not as effective at holding nails in place.

Question 13

Glulam members are generally made using 2- by (1- 1/2 - in.- thick)lumber members, but in some situations we use 1- by (3/4- in.- thick)lumber members. Which are these situations?

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Question 14

Which of the following nailed connections is the strongest?

Accepted Answer

Face nailing is the strongest of the three options. This is because face nailing involves driving nails at a 90-degree angle through the face of one board and into the end grain of the other board, providing a stronger connection compared to toe nailing, which involves driving nails diagonally through one board and into the other, or end nailing, which involves driving nails directly into the end grain of one board.

Question 15

Joist hangers are steel connectors

Accepted Answer

Joist hangers are typically used to connect floor joists with a supporting beam, providing additional strength and support to the structure. While they can also be used to connect joists with a supporting wall or floor sheathing, their primary purpose is to connect joists with beams. Therefore, choice B is the best option.

Question 16

Which structural properties of a glulam beam are included in its grade stamp?

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Question 17

Would you consider the use of a balanced glulam beam or an unbalanced glulam beam that has an overhang?

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Question 18

What is the most common use for glulam members?

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Question 19

What is the approximate moisture content in lumber laminations in glulam members?

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Question 20

What are the top and bottom horizontal parts and the vertical part of an I- section called?

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Quiz 14: Materials for Wood Construction-Ii Engineered Wood Products, Fasteners, and Connectors