Hugill House, Waltham Cross Hertfordshire

Drainage Detailed Design Services and Highway Detailed Design Services

Services offered

  • Drainage Detailed Design Services
  • Highway Detailed Design Services

The brief

Civilistix Consulting Engineers were appointed to prepare a detailed drainage and external hardstanding engineering package for Building Regulation approval for the creation of 9 residential units with associated car park, amenity space and landscaping.

What we did

We designed foul water to run fully under gravity, using carrier pipes around the proposed buildings, leading water to a proposed demarcation chamber and then connecting with an existing public sewer. To agree the sewer connection, a Section 106 application was submitted to Thames Water.

We proposed that the surface water would run under gravity to a cellular storage tank underneath the car park.  This collected surface water from all the proposed buildings and hardstanding areas and discharged it at 2.00 l/s to the proposed demarcation chamber.

Permeable pavement was used for the full car park area and all drainage was designed to accommodate the critical 100 year plus 40% climate change event in accordance with the latest guidance.

Our fully coordinated external works package included level design, kerb layout design and full depth construction details for the proposed hardstanding.

We worked in close collaboration with other design teams to deliver a fully coordinated proposed external works and drainage design solution for the client.