Sustainable drainage is a departure from the traditional approach to draining sites. The principles of Sustainable Drainage Systems (SuDS) allow to mimic natural drainage by:
- storing runoff and releasing it slowly (attenuation)
- harvesting and using the rain close to where it falls
- allowing water to soak into the ground (infiltration)
- slowly transporting (conveying) water on the surface
- filtering out pollutants
- allowing sediments to settle out by controlling the flow of the water
Horas Engineering Ltd. provide design advice and support with the following:
- Section 104 Agreements – provides a mechanism for newly constructed private sewers and pumping stations to be adopted by the local sewerage authority, who will then maintain them at their own expense.
- Section 106 Agreements – provides a mechanism for connections with the public sewer of any sewerage undertaker and discharge foul water and surface water from a private development.
- Underground drainage – foul water and surface water drains and sewers from a private development not being adopted by the local sewerage authority.
We assist with the design of the drainage system including the preparation of plans and liaison with the Sewerage Authority.
SUDS design (new pond for proposed link road)
S104 Agreement – Foul drainage longitudinal sections
Flood Risk Assessments
A Flood Risk Assessment (FRA) is a planning requirement for major developments and developments proposed in areas at risk of flooding. A Flood Risk Assessment may also be requested for sites in a low risk flood zone where a risk from another source is identified.
Horas Engineering Ltd analyse the flooding hazards which may cause a risk to the proposed development or might increase flood risk elsewhere or any impact in the existing drainage or an increase in surface water run-off.
If the preliminary investigations identify no risk of flooding or impact on existing drainage mechanisms, the resulting report will normally satisfy planning requirements. If there is risk of flooding, further assessment would be undertaken in a Flood Risk Assessment.
Flood zones map for FRA obtained from https://flood-map-for-planning.service.gov.uk/
For queries and quotes, please keep in touch using our contact form or by emailing us at info@horasengineering.com
