The Hydrorock Natural Aquifer SuDS System
Hydrorock Solutions were approached to implement a cost-effective green SuDS system which dealt with the water within the confines of the site. Previously the only solution was to drain the path and take the water offsite, which is now forbidden. It was important to the local authority that the selected drainage system was completely green and that the use of plastics in the ground was avoided wherever possible.
Because the area was not subject to vehicular traffic, standard-density blocks were suitable which have a lower cost per litre than the high-density blocks. 13 D170 blocks were used in conjunction with 13 SL300 slimline drainage grates, as shown by the block on the right.
As the blocks are lightweight and the installation process is simply ‘plug and play’, the project only required two men and a mini digger to be completed. The narrow grates and blocks could be installed with minimal lifting of the current paving, which could be reused around the entry grills. These blocks were spaced evenly along the path. Due to the modular design, the works were completed by the two men in one day with minimal disruption.