Question 1

Explain why OSB panels cannot be treated with preservative or fire- retardant chemicals while plywood can be.

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Question 2

What is the difference between sheathing and siding?

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Question 3

What is the difference between the terms "floor sheathing" and "subfloor"?

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Question 4

What are the members that connect the top chord of a truss with its bottom chord called?

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Question 5

The structural wood panels (plywood and OSB)are graded for durability with respect to weather exposure in two classifications. State the classifications and the differences between them.

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Question 6

Straight- edged (without tongue- and- groove)structural wood panels (plywood and oriented strandboard, OSB)are typically made to nominal dimensions of 4 ft × 8 ft. What are the actual dimensions of such a panel?

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Question 7

Wood trusses can be used to frame a floor or a roof. Which of these two is referred to as a parallel- chord truss?

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Question 8

What are wood I- joists typically used for in a wood frame structure?

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Question 9

In specifying a wood roof truss for a project, its slope, overall geometry, and the loads imposed on it are determined by the architect in consultation with the structural engineer. The structural design of the truss is, however, not done by the project's structural engineer. Who, then, prepares the structural design of the truss, and what is the role of the architect and the project's structural engineer after the truss design has been completed?

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Question 10

What is the most commonly used lumber size in making floor trusses, and what is the width of such a truss?

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Question 11

Square- edged floor sheathing requires an additional panel over it, which is typically a 1/4- in.- thick sanded plywood or hardboard, to make it a two- layer (combination)floor sheathing. Why is (additional)panel overlayment required?

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Question 12

In a wood I- joist, what are the flanges typically constructed of and what is the web constructed of?

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Question 13

In a plywood panel, the grain direction in adjacent veneers is at right angles to each other, referred to as
cross- graining of veneers. Cross- graining equalizes the panel strength in the two principal directions of the panel. Does it mean that a plywood panel (typical size is 4 ft × 8 ft)is equal in strength in its long and short directions?

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Question 14

Of the two structural panels (plywood and OSB), which is more commonly used for wall sheathing, floor sheathing, and roof sheathing and why?

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Question 15

The floor sheathing in a wood frame structure can be a two- layer sheathing or a one- layer sheathing. What is the difference between the two?

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Question 16

OSB panels are made from paper- thin wood wafers. How, then, are OSB panels (like the plywood panels)stronger in their longer direction as compared to the shorter direction?

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Question 17

Plywood, oriented strandboard (OSB), and particle board are three most commonly used wood- based panels in building construction. Which of these is (are)used in structural applications and which in nonstructural applications?

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Question 18

Which of the following materials (sawn lumber, I- joists, or laminated veneer lumber)is used to make a wood floor truss?

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Question 19

Which of the two durability grades (Exterior and Exposure 1)are not available in OSB panels and why?

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Question 20

I- joists can be used in place of sawn lumber joists in the construction of a wood floor. Which of the two (lumber joists or I- joists)yields a lighter floor?

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