18 Questions
What is the term for the process of drying out water from timber?
Seasoning
What is the purpose of setting the grain of each veneer at right angles to the other side in plywood?
To minimize thermal movement and provide strength in both directions
What is the term for the point at which the cell walls of wood are saturated with water?
Fiber saturation point
What is the term for the percentage of water in wood, calculated by comparing the weight of the wood before and after oven-drying?
Moisture content
What is the purpose of using temperature kilns in wood drying?
To dry the wood to a specified moisture content
What is the term for wood that has been dried to a specified moisture content?
Seasoned timber
What is the main component of wood?
Cellulose
What is the classification of trees based on their leaves?
Hardwood and Softwood
What is the characteristic of wood that makes it stronger when used under tension?
Fibrous and elastic
What is the term for wood that has been processed by a mill for construction?
Lumber
What is the term for wood that undergoes varying degrees of moisture movement?
Moisture-sensitive wood
What is the characteristic of straight-grain wood compared to irregular grain wood?
Stronger and easier to work with
What happens to plywood when exposed to extreme heat?
It undergoes charring and hollowing
What is a characteristic of chipboard that makes it susceptible to damage?
Its short wood fibers
What is a benefit of using glulam over traditional timber?
It can be manufactured in any size and shape
What is a common use for chipboard?
Building low-cost indoor furniture
How are the grains of glulam aligned?
Parallel to each other
Why is chipboard prone to moisture damage?
Because its board fibers absorb moisture easily
Learn about timber defects including moisture content, fiber saturation point, and wood properties. Understand the concepts of wood defects and their impact on wood quality.
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