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Permeable Car Park Specifications
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Permeable Car Park Specifications - 1

Specification Advice For laying SureSet flexible resin bound aggregate surfacing Permeable Car Park (SUDS) cars and occasional light delivery vehicles Fine sand lightly cast onto uncured surface Water Flow The typical depth of SureSet Permeable Paving surface: A SureSet aggregate size of 6mm requires a 20mm depth layer of SureSet A SureSet aggregate size of 10mm requires a 26mm depth layer of SureSet Binder Course A 40mm minimum depth of maximum size of AC 10mm open surf asphalt concrete, max 100/150 pen to BS EN 13108-1:2006 (Bituminous Macadam). Road Base A 100mm minimum depth of maximum size AC 20mm open graded surf asphalt concrete max 100/150 pen to BS EN 13108:2006 (Bituminous Macadam) OR 80-90mm SureSet equivalent base laid in compacted layers. Sub-base A 300-500mm minimum depth of well compacted Type 3 granular sub-base to SHW clause 805 or 4/40mm graded crushed concrete aggregate to EN12620 or locally available secondary or recycled aggregates which comply with the above speciation blinded with 2/6.3mm graded crushed concrete aggregate to EN12620. An impermeable membrane to convey water to infiltration/storage system etc. (optional) OR A geo-textile membrane to prevent upward migration of fine soil particles may be required (optional) Full infiltration Capping Layer if required in one or more layers. (please see notes below) Sub-grade Full infiltration - water returns to ground surface No infiltration - impermeable membrane used to carry water off to storage tank for either storage or controlled release Purpose To provide a seamless, flexible and hardwearing surface. Advantages An attractive and durable surface that is permeable to water and remains easy to clean. Notes If there is a danger that standing water will soften the sub-grade in an unlined system a nominal fall to an outfall should be considered. If plastic or silty sub grade is present it may be necessary to stabilise the sub grade or partially replace it with sub-base/granular capping. Total sub-base thickness will be dictated by expected loading/required water storage capacity/sub-grade strength. The maximum deviation of the base should not exceed 3mm under a 1 metre straight edge. This specification is based on normal good practice for flexible surfacing and does not absolve the specifier from designing a construction suitable for the expected traffic and ground conditions pertaining on a given site.

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Permeable Car Park Specifications - 2

Specification Advice QRSA7156 Permeable Car Park (SUDS) Permeable Car Park (SUDS) cars and occasional light delivery vehicles The details in this specification are intended only as a guide in specifying SureSet products, actual designs should be developed by the project designers taking into account the specific circumstances of the intended application. SureSet assumes no responsibility for improper reliance upon or misuse of the date herein. Product design and specification are subject to change without further notice. If you have any enquiries call our technical sales team on: +44...

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