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46 GROUNDWORKS & DRAINAGE


including drainage. Understandably, customers want to create a certain appearance for their homes: one that showcases premium quality. Pushing for a specification of a grating element with the right aesthetic can add a subtle yet important touch to a project. For example, some customers want drainage systems to be subtle and barely noticeable. These systems are inserted seamlessly between brickwork to provide a clean and contemporary finish. If a bold finish is desired, architects could use grated channels to make a feature of the drainage through mosaic, slotted or lightening gratings. Drainage made from stainless steel, cast iron, aluminium or composite, can also enhance a bold finish. It is important to consider maintenance and placing access units in a channel run. Most drainage systems are designed for easy jet-wash maintenance but the more discreet drainage options require thought about the placement of access units.


Complete the look © Will Allen


When planning and drawing the design of a new housing project, there are a number of drainage channels which help complete the look, from contemporary stainless steel to antique cast iron, meaning the finish can replicate the initial designs.


There may be some reservations about utilising aesthetically pleasing systems, in case they do not provide the appropriate functionality of what is expected. To caveat this, architects should ensure that any drainage channels that are recommended to fit with the design have the appropriate load class requirements. There are load classes that architects should look out for in a new housing project (namely B 125 and A 15). B 125 rated systems should be installed for private car parks or areas where domestic vehicles will be present. For other areas of the house, such as patios and garage thresholds, A 15 rated drainage is sufficient.


Final thoughts


As well as playing an integral role of the surrounding infrastructure of a building, drainage can also play its part in the design and should therefore be carefully considered by architects. As a final note, grating visualiser tools are available from some water management specialists on the many different options available.


© Will Allen


William Poynter is design service advisor at ACO Water Management


WWW.ARCHITECTSDATAFILE.CO.UK ADF AUGUST 2019


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