What is the primary function of a vault in a burial setting?

In a burial setting, the primary function of a vault is to serve as an outer enclosure that provides protection from earth load and sealing. This means that the vault helps to prevent the weight of the soil from collapsing the casket, which is especially important for maintaining the integrity of the burial site over time. Additionally, the sealing aspect helps to protect the casket and contents from water intrusion, thereby preserving the remains and any personal items placed in the casket.

The vault acts as a structural support system, ensuring that the casket remains intact and secure during and after the burial process. This function is crucial for both practical considerations, such as soil erosion and natural elements, and for the long-term preservation of the grave site.