What is the first step in the construction of a caisson?

The construction of a caisson begins with digging a hole in the earth. This step is critical as it prepares the site for the caisson's foundation, allowing for the necessary depth required for stability and load-bearing capacity. The excavation must be precise, as it establishes the structure's base and influences its overall integrity.

Once the hole is properly dug, subsequent steps such as setting the framework, installing reinforcement, and pouring concrete can take place. Each of these following actions relies on the foundational work done during the excavation. Proper preparation during the initial digging phase is essential to ensure that the caisson is built correctly, safely, and efficiently. This focus on starting with a solid foundation is a key principle in construction practices.