What is the characteristic shape of a compression joint seal?

The characteristic shape of a compression joint seal is designed to effectively accommodate movements and pressures while preventing the ingress of water and debris. A rectangle with a honeycomb cross section is ideal for this purpose because the honeycomb structure offers increased surface area and flexibility. This design allows the seal to compress and expand as the bridge experiences different load conditions, temperature changes, or other movements.

The honeycomb cross section also enhances the strength and resilience of the seal, making it more effective in maintaining a tight seal over time. In contrast, other shapes such as square, circle, or oval either do not provide the same level of adaptability or structural integrity needed for effective joint sealing in bridge applications. The unique geometry of the honeycomb helps distribute forces more evenly, making it a preferred choice in engineering applications where durability and performance are key factors.