CD377 states ‘Positioning of RRS components relative to infrastructure such as drainage and kerbs shall be such that it does not compromise the durability or effectiveness of the RRS or the infrastructure.’ To achieve this using traditional methods is almost impossible; even if the foundation can be installed without soil contamination of the drain material, or the wet poured concrete itself contaminating the stone, the large concrete foundations spanning the drain have an impact on the hydraulic performance of the drainage system.
Smartraft® automatically passes destructive load testing fully submerged in filter drain material and at just 200mm deep present no danger to any pipework or protective material being damaged. The impact on the hydraulic performance of the drainage system is minimal or can be designed out altogether. As loose material is contained within the perforations of the Smartraft® the risk of stone scatter or vehicles becoming stuck in the verge are almost completely eliminated. The regular shape and form of the Smartraft® also makes easy work for any grass cutting requirements, further reducing risk to road workers and the travelling public.
For future maintenance of the filter drain itself, easy to replace cartridges of drainage material can be easily placed in the perforations of the Smartraft® and exchanged for recycled clean cartridges as and when required.
Smartraft® is the ideal solution for VRS installations required at filter drain locations.
