What should you do if you encounter rock during excavation?

When encountering rock during excavation, the proper course of action is to dig 3 inches below the pipe and backfill with sand. This approach is important for several reasons.

Firstly, maintaining a safe distance from the pipe is crucial to prevent any damage to it. Pipes, especially those carrying water or sewage, need to be shielded from direct impact or pressure that could lead to cracks or breaks. By digging below the pipe, you provide a buffer that helps protect its integrity.

Secondly, backfilling the cavity with sand is an effective practice. Sand serves as an excellent material for backfilling because it allows for better drainage and reduces the risk of settling, which can occur with less stable materials. This will help ensure that the pipe remains properly supported and secured, reducing the likelihood of future issues related to the excavation.

Other methods like stopping digging might leave the project incomplete or create access issues. Using explosives is highly dangerous and often illegal in urban settings due to the risk of damage to surroundings and safety hazards. Continuing to dig without making adjustments can lead to structural damage or compromise the work already done, leading to increased costs and safety concerns. Hence, the practice of digging below the pipe and backfilling with sand is the most effective and safe