DTA were commissioned by City of Sunderland to undertake the Civil Engineering Drainage and Hardstanding Design associated with the construction of a new fire station and associated facilities.
The scheme included separate foul and surface water systems leading into a combined connection to the existing NWL sewer.
The surface water drainage system included a fire training storage tank, forecourt separator, attenuation tank and a pressurised rainwater recovery (greywater) system connecting back to the building and required careful consideration.
The Client stipulated that the car park must withstand/avoid rutting of the final surface by the large fire engines trafficking the area; this resulted in the specification of a heavy duty SMA (in consultation with Lafarge Tarmac) in order to signficantly increase the proposed car park’s design life.
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