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The challenge of restoring vegetation to steep slopes can be incredibly daunting for contractors battling erosion. The interplay of factors such as soil composition, slope angle, water content, and geological structure underscores the necessity for a comprehensive solution. In addressing slope stability, the focus is on preventing or mitigating soil movement and slope failure to minimize safety risks and property damage while protecting the environment. Ultimately, successful slope restoration requires a multifaceted strategy incorporating precise earthworks and strategic drainage solutions.
With an unparalleled reputation for sustainable innovation and customer service, Paradox was sought out for a slope stabilization project of epic proportions, a slope nestled in the heart of Edmonton. Here’s an overview of the 1400 square meter slope restoration project:
Project Overview:
Marred by destabilization due to the LRT expansion, the once-green Grierson Hill in Edmonton became an eyesore to the community. The construction compromised the slope’s stability and aesthetic allure, leading to a dire need for restoration.
Numerous attempts to replace topsoil that would allow for revegetation proved futile due to erosion. This was further exacerbated as the steep slope had a formidable incline of up to 83º in some areas. Determined to find a solution, the contractor approached Paradox for help tackling the restoration battle. Undeterred by the steep challenge, Paradox, in collaboration with their engineering partner Stratum Logics, quickly formalized a strategic approach to get the project mobilized and completed before winter hit.
LEFT: Condition of the slope preinstallation | RIGHT: Full vegetation the following summer
The mission:
To reinforce, stabilize, and protect the slope while achieving topsoil stability and confinement for sustainable vegetative growth.
Timeframe:
With only 1-2 months to get the job done, the team undertook a rapid 2-day consultation, evaluation, and proposal process to provide a comprehensive solution for the client.
The root of the challenge:
The initial project designer underestimated the challenging process of revegetation of the slope post-construction, and as a result, the slope could not support the soil load. Consequently, attempts to establish new vegetation proved ineffective.
Paradox’s solution:
After the initial site assessment of the slope, Paradox’s team joined forces with Stratum’s engineers and took to the drawing board to engineer and design a permanent solution. Tough Cell® confinement technology was used to add soil stability and provide the tensile strength required to support the soil’s weight and rooting without deformity of the cell. Anchored to the slope, the honeycomb structure of Tough Cell® was filled and hydro seeded. Due to the difficulty of working on the steep slope, a telebelt was used to fill the Tough Cell® pockets as a safe alternative to get the job done.
LEFT: Installation of the Tough Cell® layer | RIGHT: Infilling of Tough Cell® with top soil
Tackling the challenge safely:
As safety was a core priority of Paradox, the team approached the extremely steep slope with utmost precaution. Crews were always harnessed to a rappel line to move up and down the slope.
Benefits to the client:
By using Tough Cell® as the structure to stabilize the soil, the client saved significantly on future soil replacement and maintenance costs. Moreover, the client gained a reliable, durable, and successful medium for vegetation to proliferate, restoring the slope to its original glory.
Paradox’s success with the Grierson Hill project demonstrates the transformative potential of Tough Cell® geocell confinement technology for stabilizing slopes. This case study serves as a testament to Paradox’s commitment to engineering excellence, environmental consciousness, and client satisfaction.
As Paradox continues to innovate, the company remains dedicated to providing sustainable solutions for stabilizing slopes, reinforcing roads, and building pads. Tough Cell® technology paves the way for future projects, ensuring the preservation and enhancement of natural landscapes.
Paradox is uniquely positioned to help you get your projects off the ground. As a full-service company, Paradox provides a comprehensive suite of services, which include civil earthworks, access matting, road building, water treatment, and drainage solutions.
For inquiries on slope stabilization projects and more, please contact Paradox at 1.877.MUD.UGLY.
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