Which construction approach allows for expansion or contraction without damage?

The idea of flexible design is centered around creating structures that can adapt to changes, such as expansions or contractions, without sustaining damage. This approach incorporates materials and construction techniques that account for movement due to environmental factors, like temperature fluctuations or settling of the foundation. By integrating elements that allow for movement, such as expansion joints and adaptable materials, flexible design ensures that the structural integrity remains intact even when circumstances change.

In contrast, modular construction involves pre-fabricated sections that are assembled on-site, which, while efficient, may not be specifically designed to accommodate significant expansion or contraction. Site-built construction refers to traditional building methods that might not include features specifically intended for flexibility. Prefabricated construction similarly focuses on components crafted off-site, often with less emphasis on the adaptable design characteristics needed for extensive movement. Therefore, flexible design is the most appropriate choice when considering the ability to withstand changes without incurring damage.