Sustainable Urban Drainage Systems (SUDS)

Most new developments will result in an increase in impermeable area in comparison to it’s predevelopment state. Historically, surface water runoff would have been collected by a positive drainage system and transported to the nearest available sewer or watercourse. The consequent flow rate and volume of runoff would be substantially greater and arrive at the point of discharge more quickly than previously, leading to downstream flooding.

We are expert in the design using current best practice which considers the requirements of the Environment Agency, Natural Resources Wales and Building Regulations in order to deliver a more sustainable approach to surface water disposal. This is achieved through the SUDs hierarchy which places drainage solutions in order of sustainability as follows:

• Infiltration systems and soakaways

• Discharge to watercourse

• Discharge to sewers

Infiltration most closely emulates the natural ground percolation and greenfield runoff and if soil characteristics allow can be achieved in a variety of ways, using traditional ring or granular soakaways, swales, cellular crate systems or porous paving.

Discharge to the watercourse or sewer will often require a means of reducing peak flow rates to predevelopment values by storage and attenuation. The optimum cost solution to achieve the required storage volume would be selected from a range of solutions such as oversized pipes, cellular crates, ponds, basins and tanked sub base material.

 We are expert in the design of the widest range of SUDS solutions and utilise the latest surface water drainage and rainwater catchment modelling software. We routinely design and detail all types of SUDS techniques to use the most appropriate and innovative installation.

 


< Back to Services

Latest News View all

Cambria ‘SuDs in Wales 2019’ Lecture

Cambria infrastructure team were invited by the Institution of Structural Engineers to present their ‘SuDs in Wales 2019’ lecture. The lecture was held on at 4:30pm on Wednesday 16th January at the North… Read more »

Merry Christmas from all at Cambria!

Cambria supports Hope Rescues Cosy Kennels Shoebox Appeal

After the successful contribution made by our team to the Reverse Advent for Newport Foodbank last year, this year we decided to do something a little different! This year, we chose to support… Read more »

ICE Engineering Team Challenge 2018

Our Callum Parker and Trish Michael both volunteered to help out at the ICE Engineering Team Challenge at the Cardiff event on the 5th November and Newport on the 6th November 2018. Callum… Read more »

Practical Completion of Castle View Windsor!

We are delighted to see our Castle View, Windsor project – a prestigious and the UK’s latest Urban Retirement Village – achieving Practical Completion last week. Cambria’s team delivered the multi storey structural… Read more »

TeenTech at Islwyn High School

Kiron House, a Structural Engineer at Cambria, attended the TeenTech event at Islwyn High School involving several local feeder primary schools on Thursday 25th October. The event included an activity where the students… Read more »

Cambria STEM Talk at Ysgol Gyfun Gymraeg

Cambria actively supports local education initiatives with two of our employees most recently attending Ysgol Gyfun Gymraeg, Bro Eern in Penylan, a district in the East of Cardiff to deliver a STEM talk… Read more »

Trish becomes a member of the ICE!

Upon a successful application result, earlier in the month our Practice Secretary, Trish met with Keith Jones Director of the ICE Wales for a coffee to thank him for recommending she should apply… Read more »