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Trees in cities are almost universally seen as a very desirable, indeed hugely beneficial part of our lives. And probably the most critical factor in tree health and longevity, is the provision of enough quality soil for the tree roots. Providing for this volume of uncompacted soil beneath pavements is an issue that aborists, landscape architects and engineers have been debating for decades.
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Leading the way in Advanced Structural Soil Cells
“Citygreen systems are dedicated to the successful establishment of trees in cities.”
The high strength Citygreen Structural Module is the result of a team of talented design engineers working with Citygreen to produce the ultimate load bearing ‘root cell’ structure.
30 Series - 100% recycled polypropylene
Length : 600mm or 23.62in
Width : 600mm or 23.62in
Height : 404mm or 15.91in
“The Stratavault system is designed and tested to support 300kPa (43.5psi) loads (‘30 Series’)”
Citygreen’s modular Stratavault system employs advanced design geometry and reinforced copolymers to produce an incredibly robust, skeletal matrix. This matrix has been tested by Finite Element Analysis, as well as physical Ultimate Load tests at university. These test results have been verified by consulting engineers to provide adequate support for pavement loads.
Compared to Rock/Soil Matrix
Early research utilised a rock and soil matrix to provide support for pavement, while permitting some root growth within the pavement. Structural Cells have moved this principle forwarded by replacing the rock with engineered modules.