What is the primary reason for constructing a transverse joint?

The primary reason for constructing a transverse joint is to allow for expansion and contraction. In roadway construction, materials such as concrete and asphalt are subject to temperature changes. When temperatures rise, these materials expand, and when they cool, they contract. Transverse joints are specifically designed to accommodate these movements, preventing cracking and potential structural damage to the pavement.

Understanding the purpose of transverse joints is essential in roadway design, as they serve as deliberate weak points that facilitate necessary movements of materials without compromising the integrity of the surrounding area. While other aspects, like aesthetics or drainage considerations, are important in roadway design, they do not directly relate to the core functionality that transverse joints provide in managing expansion and contraction.