Legacy construction is characterized by which of the following?

Legacy construction is characterized primarily by the use of traditional building materials and techniques, which predominantly include sawn lumber. Sawn lumber refers to timber that has been cut from trees and processed into usable sizes, which has been a standard practice in construction for many years. This method typically results in a more substantial and sometimes more fire-resistant structure compared to modern lightweight materials.

While lightweight materials and thermoplastic materials might be found in newer structures, they are not characteristic of legacy construction, which often emphasizes durability and the use of materials that have been tried and tested over decades. Additionally, legacy construction techniques predate 1970 and hence do not reflect the advancements made in construction during and after that time. Understanding the significance of sawn lumber in this context highlights the critical differences between various construction methods and materials used throughout history.