Drainage Kerb

Concrete Kerb Drainage

Available from the JDP branch network is a range of the latest integrated kerb drainage systems which offer an alternative to conventional kerb, gully and drain. Endeavouring to supply the road building contractors and authorities with the best solution for each application.

The concrete & polymer concrete range of integrated kerb drainage offer efficient drainage combined with traditional manufacturing quality. Whether for use on main carriageways or in urban areas with aesthetic considerations the range is extensive enough to cover all applications.

Kerbs / Application Selector

	Highway	Mini Highway	Highway Ultra	HydroKerb
Key Applications	Highways Commercial sites Industrial sites City roads	City roads Urban roads Access roads	City roads Town centres Car parks Access roads Urban areas	Urban roads Car parks Housing developments Conservation areas and heritage
Features	High capacity linear drainage system Reduces need for underground pipework and subsequent excavation costs Immediate water removal Designed for use on motorway and dual carriageway applications	High surface water drain off Reduction in excavation and installation cost Robust design for busy carriageway applications Available in one piece or two piece units	Robust polymer concrete design Minimal installation disruption Good hydraulic characteristics Easy to use one or two piece modular design	Ideal for limited depth applications Excellent drainage characteristics Cornish granite finish top with polymer Most aesthetic kerb drainage available
Accessories	Shallow, deep & crossing bases Junction & outlet bases Crossing base unit Silt box top unit External radius unit Cable duct unit Concrete & ductile iron drainage tops	3x base unit depths Standard top unit Rodding eye top unit Silt box top unit Radius unit 25/11 Sump unit Gully unit Crossing base plate	Shallow & deep units (base only or one piece) Dropper units Top unit Radius 6m to 25m internal & external Crossing unit Access top Silt box Deep & shallow gullies	Top unit Radius units Top unit Crossing unit Sump unit Inspection unit Gully Inflow unit Gully pot Silt box top Rodding unit

Over recent years the use of Combined Kerb Drainage has grown rapidly, with engineers appreciating the advantages offered over the traditional gully and pipe drainage systems, for car parks and carriageways. Lightweight kerb drainage system, manufactured from 100% recycled waste destined for landfill and 70% lighter than conventional concrete. Recycled Kerb Drainage negates the extra cost and time incurred with the vacuum lifters and grabs needed for traditional concrete kerbs.

Features & Benefits

• Combined kerb drainage system
• Made from 100% recycled material
• 100% recyclable
• Extremely lightweight being some 70% lighter than conventional concrete or polyester concrete equivalent, yet is strong and robust.
• Available in 305mm and 480mm high units to half battered HB1 profile, and has a full range of components including droppers, centre stones, inspection and gully units, radius kerbs etc.
• 3 inlets in the face of the kerb unit, offering better hydraulic performance, and enabling surface water to drain more quickly from the carriageway.
• One-piece unit 500mm long, with a high-impact resistance and has a positive interlock between all components.
• Resistant to most forms of effluents found in highway situations, and has a finish in common with standard concrete kerbs.

Applications

• Urban road schemes
• Trunk roads
• Roundabouts
• Traffic calming situations
• Car parks

A full range of accessories is available making a complete system.

This shallow kerb unit is available as splayed or half battered and is ideal where construction depths are limited i.e. concrete slabs/ bridge decks, also where low flows are anticipated (narrow/short lengths bridge decks).

It allows continuity of kerb drainage from carriageways over structures. When located on Bridge Decks, sub-surface slots are incorporated to drain the asphalt matrix. A wide range of components is available, such as End Units, End Outlet Units, Expansion Joint Assemblies, and Inspection Units.

Concrete Kerb Drainage

British Standard kerb products comply with the performance levels in European Standard BS EN 1340

Shallow Drainage Unit

Load tested up to D400 under EN1433

Fully compliant to Highways Agency (HA) IAN117/08 and EN1433

Please Note:

Traditionally, combined kerb drainage system failures are due to side wheel loads, irrespective of the compressive loading capabilities of the product, but EN1433 and DIN19580 do not specify a test for side impact loads.

However, it is designed to have a high impact resistance to side wheel loads therefore we recommend the C250kN installation detail with a well compacted road construction.

Concrete Kerb Drainage

These products should be installed in accordance to BS7533 Part 6. They form edge restraints for other paving materials, pedestrian/vehicle segregation and drainage collectors for surface water. Foundations for units can either be a well compacted bed of fresh concrete or a 1:3 cement : sand mortar (12-40mm thick) on a preformed concrete race.

The base concrete, to grade ST1, should be a minimum 150mm thick and extended 150mm beyond the edge of the unit where haunching is required.

Haunching for units as appropriate should be with a concrete grade ST1. It is necessary to ensure a good bond between haunching concrete, unit and base. Allow to gain sufficient strength before laying adjacent paving material. Lay units to line and level with a paviours maul such as that they are within 3mm of the design alignment. Joints should be close joints (trowel thickness) for natural stone and concrete units, laid dry.

Shallow Drainage Unit

Through a policy of material and process development, Recycled Kerb Drainage has a finish almost identical to a standard Concrete Kerb Drainage.

• Excavate through to line and level.
• Lay out units prior to installation to ensure all rodding access units and outlets are positioned correctly.
• Start at outfall and work away, finished line and level should be pre-determined.
• If sealant is to be applied please apply to the unit not yet laid then butt together – keep joints clean of concrete bedding material.
• A 2mm gap should be left between units (trowel thickness) to allow for contraction and expansion.
• The male/female joint will ease installation procedure as line will be easier to achieve.
• Asphalt can be laid to the pre-marked line shown on units to offer a 125mm kerbface.
• Asphalt will adhere to the face so pre-pitching is not required.
• Units should be cleaned prior to hand over.