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Sustainable urban water drainage system – SUDs designs

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									185044_text:454.3 SUDS layout 04              2/6/10     15:31        Page 84




             Appendix 2 Design details
             The following are typical design details showing a range of
             solutions from Aggregate Industries. Each project is unique
             and will require its own bespoke SUDS which whilst we cannot
             illustrate here, can be designed and developed by our
             dedicated SUDS technical team (see page 100).



             Typical pervious pavement details




                                                                                                   Charcon Infilta permeable block
                                                                                                   paving system 80 mm thick


                                                 Charcon Permafilter Geotextile
                                                 (optional over granular material)                 Bedding layer-type 2/6.3 to
                                                                                                   BS EN 13242:2002 50 mm thick
                                                 Bardon DrainAgg 20                                Charcon Permafilter Geotextile

                                                                                                   150 mm thick Charcon Permavoid

                                                 Charcon Permafilter Geotextile
                                                                                                   Charcon Permafilter Geotextile
             Precast concrete
             edge restraint

                                                 Granular bedding layer
                                                                Precast concrete
                                                                                                   50 mm thick granular bedding layer   edge restraint
             Falls to
             engineer’s                          Capping layer
                                                                                                   Prepared formation                    Falls to engineer’s
             specification                       (if required-thickness to suit CBR)
                                                                                                                                         specification
                                                                                       Zero fall




             Pavement to                                                                                                                 Pavement to
             engineer’s design                                                                                                           engineer’s design


             2.17 Charcon Infilta permeable pavement – infiltrating
             Showing interface between Permavoid and open-graded subbase



                                                                                                   Charcon Infilta permeable block
                                                                                                   paving system 80 mm thick


                                                 Charcon Permafilter Geotextile
                                                 (optional over granular material)                 Bedding layer-type 2/6.3 to
                                                                                                   BS EN 13242:2002 50 mm thick
                                                 Bardon DrainAgg 20                                Charcon Permafilter Geotextile

                                                                                                   150 mm thick Charcon Permavoid

                                                 Charcon Geomembrane (impermeable)
                                                                                                   Charcon reinforced protection
             Precast concrete                                                                      Geotextile
             edge restraint                                                                                                             Precast concrete
                                                 Granular bedding layer
                                                                                                   50 mm thick granular bedding layer   edge restraint
             Falls to
             engineer’s                          Capping layer
                                                                                                   Prepared formation                    Falls to engineer’s
             specification                       (if required-thickness to suit CBR)
                                                                                                                                         specification
                                                                                       Zero fall




             Pavement to                                                                                                                 Pavement to
             engineer’s design                                                                                                           engineer’s design


             2.18 Charcon Infilta pervious pavement – attenuated
             Showing interface between Permavoid and open-graded subbase




        84     Sustainable drainage systems                     Appendices

								
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