SuDS Attenuation and Water Neutrality Calculation Services
Navigating the SuDS hierarchy can appear a daunting process. We provide all the tools to simplify the process in a neat, inexpensive and methodical manner.
We offer a comprehensive and streamlined SuDS Assessment and Calculation Consultancy Service which include:
- Infiltration (percolation/Sokaway) test to BRE 365
- SuDS attenuation tank sizing
- Flow regulator selection: Vortex, Orifice, Floating Orifice or Pumped.
- SuDS soakaway sizing to BRE 365
- Wastewater Drainage Field Soakaway Sizing Calculation
We also provide complementary assessments which can be considered during the SuDS appraisal stage:
- DROP level 3 rainwater harvesting calculation
- Water Efficiency Calculation
- Water Neutrality Assessment
- Rainwater harvesting tank overflow analysis
- Irrigation sizing design
We're often asked to review drainage designs which may have resulted in overly complicated drainage systems. We are able to advise on existing designs on a site by site basis. Please get in touch so we can quote for a design review.
If your drainage design is complete and you require a quote for supply of the main components please get in touch.
- Above ground SuDS can be found here
- Below Ground SuDS can be found here
- Rainwater Attenuation Flow Control Can be found here
If you're at the pre planning stage, have a planning condition or need to satisfy building control you may require an Attenuation tank sizing design. This may have been completed by an Architect or a drainage engineer.
In order to complete the calculation we require:
- Roof Area (m2)
- Other hard (ground) surfaces area (m2)
- Postcode of development
- Allowable discharge rate (l/s)
- Climate change factor (if specified)
- Storm profile/duration (if specified)
If you are combining attenuation with rainwater harvesting the additional info is required:
- No of bedrooms of proposed development
- Use of rainwater - toilet flushing, toilet flushing and irrigation, toilet flushing machine washing and irrigation
Get in touch today to start the SuDS Calculation process.