Private Drainage Detailed Design and External Hardstanding Detailed Design
Civilistix Civil Engineers were tasked to prepare Private Drainage & External Hardstanding Detailed Design packages and Adoptable
Highway Design (S278) for a development comprising the creation of 293 student units within a 6-storey building along with courtyard
and other associated external hardstanding areas.
Our Adoptable Highway Design (S278) consisted of upgrade of the surrounding footways and the creation of 2no. vehicular accesses
from the proposed site. This included site clearance, surfacing and kerbing, dropped kerbs, footway levels, road markings and typical
Our surface water drainage design utilised a full gravity approach and included the use of a green roof and geo-cellular storage tank
providing attenuation before releasing flows at 7.4 l/s to the Thames Water combined public sewer. Our drainage was
designed to accommodate the critical 1 in 100 year plus 40% climate change event.
Foul water was conveyed full by gravity to the Thames water sewer.
We worked in close collaboration with other design teams, to deliver a fully coordinated proposed external works and drainage
design solution for the client.