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LANDSCAPING & EXTERNAL WORKS
SuDS are an increasingly vital part of construction, ensuring those who live in our communities and use our infrastructure can do so safely, comfortably and without fear of expensive flood damage
system. Alternatively, it can infiltrate to the ground, returning to the natural water table, or it can be discharged in a controlled manner into the sewer system. Looking more closely at pervious pavements, there are two types available; porous pavements, which infiltrate water across their entire surface material e.g. porous concrete and porous asphalt; plus permeable pavements, which have a surface that is itself impervious to water but the materials are laid with void space through the surface to the sub-base e.g. modular permeable paving.
An example of a market in which a specification of this type of surface becoming a standard is Germany, where over 20 million m2
of permeable pavements
are installed annually and treated as standard highway construction. Architects are also especially interested in whether climate change has affected SuDS planning and setup and this is undeniable when considering the increase in the number of three consecutive day storm events mentioned previously; meaning that continuing growth in the volume of surface water run off needs to be dealt with effectively.
As more sustainable development becomes ever more important, we are also seeing architects ask whether SuDS can be incorporated into environmentally conscious building certification initiatives like BREEAM. Fortunately, the answer to this is yes – we can use porous materials to ensure that sites are managing water correctly and with less impact on the natural environments. Additionally, it’s also worth taking into consideration that several studies confirm permeable pavements demonstrate significantly lower total pollution loadings than standard pavements. Certainly, we have seen SuDS playing a growing role in developments over the past decade or so, as architects and developers try to meet the challenges posed by our changing climate, and this is sure to continue. SuDS are an increasingly vital part of construction, ensuring those who live in our communities and use our infrastructure can do so safely, comfortably and without fear of expensive flood damage.
Hannah Hyslop is specification manager at Cemex UK
WWW.ARCHITECTSDATAFILE.CO.UK
ADF APRIL 2024
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