New waterproof membranes were installed to follow the contours of the original concrete slab covering the podium deck , however these were removed with the laying course and 1,610m2 of 60mm Alpha Flow was laid on top of the 2-6.3mm grit ( which is compliant to BS 7533-13:2009 Table A . 2 .)
Surface water from rain can now pass through the laying course to the drainage outlets below the pavement .
On the building ’ s roof terrace , Brett Dreen ® paving slabs were selected to sit on the Dreen ® Fixed Plate Pedestal system . This system is designed for roof areas where access for maintenance may be required . As the system allows the placement of paving flags with interlocking corners , horizontal movement is eliminated while enabling sufficient water drainage through the open joints of the paving .
Jamie Gledhill , Engineering Technical Manager , Brett Landscaping , said : “ This project demonstrates the versatility and possibility of using pedestal systems to create spacious , level , safe paved areas in modern building designs .
“ The shape and design challenge of this landmark building meant that we had to carefully select the systems we used to provide Millennium Point with a long-lasting , hard wearing paving solution that could also competently manage surface water without springing leaks that could damage the supporting roof systems .”
Matthew Hoddinott , Business Development Manager , Zoontjens , adds : “ We were very confident that the systems Brett Landscaping supplied would be able to upgrade the SuDS capability of the two public spaces . Using Alpha Flow and the Dreen flag paving on roof pedestal systems provides Millennium Point with two large spaces ready again for public use , and as an asset to the entire site .”
www . brettlandscaping . co . uk www . refurbandrestore . co . uk - 47