What is a critical factor to consider regarding obstructions in a trench?

When evaluating obstructions in a trench, recognizing their potential impact on drainage support is essential. Obstructions can block the natural flow of water, leading to pooling and erosion problems. If water cannot properly drain away from or through a trench due to these obstructions, it can create unstable soil conditions, leading to trench collapse and compromising the safety of workers.

Understanding the importance of drainage in trench construction is vital for maintaining soil integrity and preventing hazards. Therefore, ensuring that any obstructions do not impede drainage capability is a critical consideration during trench planning and execution.