

RIDA prepares drainage calculations, layouts and engineering drawings for developments at planning, technical approval and construction stages. Our drainage design consultants work with architects, developers, planning teams and contractors to move projects from an agreed drainage approach to detailed engineering information.
For wider drainage advice across planning and development, our specialist drainage consultants can review the project requirements and related drainage services.
Our drainage design service can include:

Calculated drainage layouts, pipework, levels, storage and controls for technical approval or construction.

Hydraulic calculations for runoff, discharge rates, attenuation and network performance.

Coordinated drainage drawings aligned with buildings, roads and site constraints.

Pipe diameters, invert levels, cover and gradients developed for the site.

Storage design and discharge control for restricted outfalls.

Drainage drawings and calculations to support the discharge of planning conditions.

Surface-water drainage design as part of the wider drainage scheme.

Coordination with SuDS features and dedicated foul-water drainage requirements.












Where the project needs a site-specific flood risk assessment, RIDA can provide the separate planning assessment. Projects needing wider flood-risk advice can be reviewed by our specialist flood risk consultants.

We have had the pleasure of working with Arge at RIDA over several years and throughout this time the experience has consistently been very good. What stands out most is their responsiveness - any queries or issues have always been addressed promptly, which has given us great confidence and peace of mind.
Drainage design is the engineering process used to determine how water will be collected, conveyed, stored and discharged from a development. The scope can include layouts, pipe sizes, gradients, levels, storage, flow controls, calculations and drawings.
Detailed drainage design converts the agreed drainage approach into a calculated engineering scheme. It can define pipework, levels, gradients, storage, flow controls, chambers, outfalls and drawings for the agreed project stage.
Yes. Send the planning condition and any drainage documents already prepared. RIDA can review the condition and confirm the drawings, calculations and supporting information needed for the drainage submission.
A drainage design can include layouts, pipe sizes, gradients, invert levels, manholes, storage, discharge controls, hydraulic calculations and detailed drawings. The exact package is set by the project stage and agreed scope.
RIDA provides separate SuDS Design and Foul Water Drainage Design services. The wider drainage design can coordinate those requirements with the development layout and proposed levels.
Send the site location, proposed development layout and any planning, survey or drainage information currently available. RIDA can review the information and confirm the likely scope before providing a fee proposal.
Send the site location, proposed layout and any planning, survey or drainage information currently available. RIDA can review the project and confirm the scope required.