How to Avoid 5 Common Mistakes in Tight Access Excavation

Tight access excavation can present a unique set of challenges. Whether it’s navigating narrow spaces, working with limited access, or dealing with unexpected obstacles, there are several common mistakes that can lead to delays, increased costs, or even safety hazards. In this blog post, we’ll outline the top five mistakes made in tight access excavation and provide tips on how to avoid them for a smooth and successful project.

1. Underestimating Site Accessibility

One of the most common mistakes when planning a tight access excavation project is underestimating the accessibility of the site. Before starting work, it's essential to thoroughly assess how the machinery will enter and exit the site taking into account slope and width, and whether there's enough room for safe operation.

How to Avoid It:

• Conduct a detailed site inspection to ensure that equipment can maneuver safely.

• Plan for unexpected obstacles such as nearby structures, trees, or narrow passages.

2. Not Identifying Underground Utilities

Excavating without properly identifying underground utilities such as gas lines, water pipes, and electrical cables can lead to costly disruptions or dangerous accidents. This is especially critical in tight access areas, where hitting a utility could cause significant costs and project delays.

How to Avoid It:

• Always use tools like beforeUdig or conduct a non-invasive survey to locate utilities before starting work.

• Mark the location of utilities clearly and plan excavation paths carefully.

• Hand dig or Hydro-excavate within 500mm of utility locations

Note: Utility services aren’t always documented. It’s the responsibility of the excavator (person/company) to do their due diligence before breaking ground making sure the correct liability insurance is in place.

3. Failing to Account for Soil Instability

In tight access excavation, soil conditions can be unpredictable. Loose or unstable soil, particularly in confined spaces, can increase the risk of cave-ins, putting workers and the site at risk.

How to Avoid It:

• Assess soil conditions before starting any excavation work.

• Use trench boxes, shoring, or other protective systems to stabilize the excavation walls, particularly for deeper digs greater than 1.5m (5 ft).

• Rule of thumb; keep equipment and equal distance away from the trench as it is in depth.

4. Inadequate Safety Measures for Confined Spaces

Working in confined spaces is a key aspect of many tight access excavation projects. However, failing to implement the correct safety measures can lead to serious accidents.

How to Avoid It:

• Follow strict safety protocols, including providing proper PPE (personal protective equipment), using secure barriers, and ensuring all workers are trained in confined space safety.

• Regularly monitor the site for any potential hazards and implement controls.

5. Overlooking Waste Disposal and Dust Control

Excavation work can generate a lot of debris, dust, and soil, which can be difficult to manage in tight spaces. Failing to control dust and dispose of waste properly can lead to environmental damage or create a messy, hazardous work environment.

How to Avoid It:

• Plan for efficient waste removal and proper disposal of soil and debris.

• Use dust suppression techniques such as water spraying or dust control systems to keep the site safe and clean.

Conclusion

Avoiding these common mistakes in tight access excavation can make a significant difference in the outcome of your project. At DigTight, we ensure that every step of the excavation process is thoroughly planned and executed to prevent these errors. By following best practices and utilizing the right equipment, we ensure your project is completed safely, on time, and within budget.