CASE STUDY
PROJECT HIGHLIGHT
Skeena deteriorated Culvert Renewal
1. The Problem
The project involved a deteriorated culvert, installed in the 1970s, with a length of 18 meters and a diameter of 1.2 meters. This culvert was crucial as it facilitated the passage of accumulated water from three creeks beneath a railway line, directing it towards the sea. Over the years, the culvert suffered from significant corrosion and abrasion, leading to its deterioration and posing a risk of collapse. The challenge was to rehabilitate the culvert without disrupting the continuous operation of the railway, as halting train services was not an option.
2. The Solution
To address the problem, the following steps were taken:
Grouting: Approximately 1000 pounds of non-shrink grout was installed to:
Lift and align the settled outlet.
Stabilize the soil under the inlet.
Fill all voids from the 8 to 4 o'clock positions along the bottom of the culvert for its entire length.
Spraywall Structural Liner Installation:
Material: 3.2 sets of Sprayroq's Spraywall structural liner were supplied and installed in the culvert beneath the railway.
Thickness: The liner was applied at a thickness specified in the stamped engineered drawings, following the high-build protocol of 710 mils (18 mm).
Application: Spraywall was applied to provide a continuous, seamless lining, ensuring long-term structural integrity and protection against further corrosion and abrasion.
Spraywall Properties:
Durability: Spraywall is known for its high durability and resistance to corrosion and abrasion, making it ideal for rehabilitating deteriorated culverts.
Seamless Application: The material forms a continuous, seamless lining that prevents water infiltration and further deterioration.
Quick Curing: Spraywall cures quickly, minimizing downtime and allowing for rapid project completion without disrupting railway operations
3- The Results
The rehabilitation project was successfully completed with the following outcomes:
Structural Integrity Restored: The culvert's structural integrity was fully restored, eliminating the risk of collapse and ensuring safe passage of water from the creeks.
Minimal Disruption: The project was executed without any disruption to railway operations, maintaining the continuous flow of train services.
Extended Lifespan: The application of Spraywall significantly extended the lifespan of the culvert, providing long-term protection against corrosion and abrasion.
Cost-Effective Solution: The use of non-shrink grout and Spraywall proved to be a cost-effective solution, avoiding the need for a complete culvert replacement.
4- Lessons Learned
Importance of Thorough Assessment: Conducting a detailed assessment of the culvert's condition was crucial in identifying the most effective rehabilitation methods.
Effective Use of Materials: The combination of non-shrink grout and Spraywall provided a robust solution, highlighting the importance of selecting appropriate materials for specific project needs.
Minimizing Disruption: Planning and executing the project without disrupting railway operations demonstrated the value of strategic project management and coordination.
Long-Term Planning: Investing in durable materials like Spraywall ensures long-term benefits and reduces the need for frequent maintenance or replacements.
Quantum Industrial Solutions is a full service Structural Coatings and linings Company offering infrastructure rehabilitation and geotechnical grouting in Western Canada.