Permeable Paving & SuDS
Optimising Permeable Paving with Flow Control
Bob Bray, Robert Bray Associates
Over 25 years use, concrete block permeable paving has demonstrated unique capabilities as a multifunctional SuDS technology. It combines a structural pavement with water conveyance, attenuation and storage, together with pollution treatment to provide a gradual supply of clean water for amenity and biodiversity.
This 30-minute webinar video explores how straightforward flow controls can optimise and expand these capabilities, with techniques including water storage in paving compartments deployed around a site to integrate SuDS within development and to avoid additional land-take.
An essential introductory guide to all aspects of permeable paving for designers, developers, planners, regulators and all those involved with development. This edition reflects the latest thinking based on experience from long-term usage and reviews recent innovations and developments.
Concrete block permeable paving provides ‘Cool Pavements’, helping to reduce the urban heat island effect, with evaporation of rainwater from the surface and within the paving. This enhances the high albedo – or heat reflectance – offered by concrete block or flag paving generally, compared with asphalt.
Multifunctional Sustainable Drainage
Concrete Block Permeable Paving is an essential sustainable drainage (SuDS) technique. It simply allows water to pass through joint filling material in gaps between concrete paving blocks or flags into the underlying permeable sub-base. Here, it is stored and released gradually to help prevent flooding. At the same time, many pollutants are substantially removed and treated within the pavement itself.
Key benefits include:
- Reducing, attenuating and treating runoff near the surface
- Direct infiltration or conveyance to the management train
- Multi-functional SuDS meeting current guidelines
- Established technology with proven performance
- No additional land-take and lower whole-life costs
- Safe, level, puddle-free, shared surfaces for all
- A gradual supply of clean water for landscape, biodiversity and harvesting
Learn more about permeable paving and SuDS in the video above and the following downloads.
To see a selection of Permeable Paving & SuDS projects please click here.
Guidance on spatial planning, structural and hydraulic design, specification, detailing, construction and maintenance of concrete block permeable pavements.
This document brings together a variety of construction details, demonstrating best practice to make permeable paving and SuDS robust and durable over the long-term.
This document provides a comprehensive illustration of the engineering design process set out in Sections 6 - 10 of ‘Design & Construction of Concrete Block Permeable Pavements’, Edition 7:2018.