Timbers: Materials, sources and properties：練習問題

Which of the following is a hardwood known for being very lightweight and often used in model making?

In the context of working properties, a timber that can withstand being scratched or indented is said to have high hardness. Which of the following hardwoods is most commonly associated with high hardness for applications like tool handles and flooring?

An architect is choosing a timber for a structural beam and requires a material that can resist compressive strength. According to the specification, which hardwood is a traditional choice for heavy-duty structural work in Europe?

According to the Edexcel specification, which of the following timbers is classified as a hardwood and is commonly sourced from European forests?

When selecting a timber for a heavy-duty workbench that requires high resistance to indentation and surface wear, which working property and specific timber species should a designer choose?

List two physical characteristics of timber that a designer should consider when selecting a material for a table top. (2 points)

A designer is selecting a material for an architectural model. Explain one reason why Balsa might be preferred over Oak for this application despite both being hardwoods. (3 points)

Compare the use of Plywood and MDF for a high-quality kitchen cabinet door, considering their grain structure and their ability to resist warping in a humid environment.

A designer is selecting materials for a high-quality staircase and is comparing Beech and Balsa.

(a) Compare these two hardwoods in terms of their hardness and density, and explain why one is significantly more suitable for stair treads than the other. (3 points)

(b) Mahogany is often used in high-end furniture. Describe two negative impacts that the large-scale logging of Mahogany from Amazonian forests has on the ecological footprint of the planet. (2 points)

A designer is developing a high-quality outdoor bench intended for a public park in a coastal area. They are deciding between using Oak (hardwood) and European Larch (softwood).

(a) Compare Oak and European Larch in terms of their durability and resistance to decay in an outdoor environment. (4 points)
(b) The designer decides to use laminating as a reinforcement technique for the curved backrest of the bench. Describe the process of lamination and explain why it is more suitable for curved timber components than traditional machining from a solid block. (4 points)