Excavation work demands precision, planning, and safety. Whether it’s for building a new house, repairing a foundation, or installing a septic system, entering an excavation always presents a potential risk, both for workers and for property owners on the site.
Before any work begins in a trench or excavated area, several elements must be carefully checked. This article outlines the essential checks to be carried out before entering an excavation zone and explains how A. Préfontaine & Associés adheres to the highest safety standards in all its excavation projects in Sherbrooke and the surrounding area .
1. Wall stability
The first thing to check before entering an excavation is the stability of the ground . Depending on the composition of the soil (clay, sand, gravel, rocky soil), the risks of collapse vary. The walls must be securely shored , sloped , or reinforced , depending on the depth and applicable standards.
At A. Préfontaine , our operators always assess soil stability before any descent, particularly in confined or deep areas. This guarantees worker safety and the durability of the work.
2. The depth of the excavation
Depth is a critical factor . Beyond 1.2 meters (4 feet), CNESST regulations require specific protective measures, such as the use of shielding or restraint systems.
In residential construction projects, such as excavation for a new house , the depth can quickly exceed this threshold. Our teams therefore ensure that all conditions are met before entering an excavation.
3. The presence of water or moisture
Waterlogged soil or water seepage in an excavation significantly increases the risk of slips, collapses, or injuries. Therefore, it is essential to pump out the water or ensure proper drainage before entering the area.
This is particularly important in projects such as septic system installations , where the natural environment is often damp. Our teams ensure proper water drainage before any work begins.
4. Detection of underground networks
Before any excavation work , it is essential to locate buried networks : gas, electricity, telecommunications, water mains, etc. Improper handling can lead to serious consequences.
We always request the location of public utilities before starting any work. This allows us to work safely and protects underground infrastructure.
5. Access to the excavation
Entry to and exit from the excavated area must be easy, clear, and safe . Ladders, ramps, or platforms must be installed to ensure worker mobility.
When delivering sand, gravel or crushed stone, our materials delivery service also ensures that access routes to the construction site are not obstructed.
6. Atmospheric conditions
Before entering an excavation, weather conditions must be assessed : rain, storms, frost, or extreme heat can make the work dangerous. A sudden downpour can quickly fill a trench, while frozen ground can conceal cracks or weaken the walls.
A. Préfontaine follows a strict policy of adjusting according to the weather, to guarantee safety on all excavation sites in Sherbrooke and surrounding areas .
7. Ventilation and air quality
In some deep or narrow excavations, ventilation may be insufficient , increasing the risk of gas buildup or oxygen depletion. Therefore, it is essential to monitor air quality and install mechanical ventilation if necessary.
This point is particularly important in specialized excavations, such as soil decontamination or work in confined spaces.
8. Training and supervision
No worker should enter an excavation without having received adequate safety training. Furthermore, a competent supervisor must always be present to assess conditions in real time.
At A. Préfontaine & Associates , all our employees receive ongoing training on best excavation practices . Our culture of prevention has been at the heart of our operations for nearly 40 years.
Excavation in Sherbrooke requires a professional and rigorous approach. Before entering an excavation, every detail counts: soil stability, wall safety, location of services, weather conditions, access, training… Ignoring even one of these checks can have serious consequences.
At A. Préfontaine, security is an integral part of our corporate culture. Since 1986, we have offered reliable, fast and secure service to both individuals and businesses.
Do you have an excavation project in Sherbrooke? Contact our team using the contact form to discuss your needs or get a personalized quote.