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Questions and Answers
What is the distinct structure of wood that affects its use as a construction material?
Which wood product is an example of engineered wood products?
What type of wood has growth rings composed of earlywood and latewood?
What does the moisture content of a wood specimen represent?
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What property makes wood continue to be an important civil engineering material?
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What is the level of saturation at which the cell walls are completely saturated, but no free water exists in the cell cavities called?
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What is the purpose of surfacing the rough-sawn lumber?
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Which type of wood is typically used for studs, joists, beams, and trusses?
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What does the term 'engineered wood' refer to?
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What is the common shape for heavy timber according to the text?
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Study Notes
Structure of Wood
- The distinct structure of wood, composed of cellulose, hemicellulose, and lignin, affects its use as a construction material.
Wood Products
- Engineered wood products, such as plywood and laminated veneer lumber (LVL), are manufactured by combining wood fibers or layers to form a stronger and more stable product.
Types of Wood
- Softwoods, such as pine, spruce, and fir, have growth rings composed of earlywood and latewood.
Moisture Content
- The moisture content of a wood specimen represents the percentage of water present in the wood relative to its oven-dry weight.
Properties of Wood
- Wood's ability to absorb and release moisture without deteriorating makes it an important civil engineering material.
Moisture Saturation
- The level of saturation at which the cell walls are completely saturated, but no free water exists in the cell cavities, is called the fiber saturation point (FSP).
Lumber Processing
- Surfacing the rough-sawn lumber is done to improve its appearance, stability, and workability.
Lumber Usage
- Softwoods, such as spruce, pine, and fir, are typically used for studs, joists, beams, and trusses.
Engineered Wood
- Engineered wood refers to wood products manufactured by combining wood fibers or layers to form a stronger and more stable product.
Heavy Timber
- Heavy timber is commonly used in large, rectangular sections, often with a solid, rectangular cross-section.
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Description
Learn about the importance of wood as a construction material, its properties, and mechanical testing. Understand its extensive use in civil engineering for buildings, bridges, utility poles, and more.
