CLARK DRAIN LTD
Suppliers of: Underground drainage, pipe, fittings, channels, gullys, inspection chambers, covers & frames, gully gratings, surface boxes, Linear drainage systems, drain mats, manhole lifters, Linear channel, Gully grate, Heavy duty channel, Domestic channel, Heavy du
Clark-Drain, formerly known as Clarksteel Ltd was founded in 1963. Clark-Drain offers a wide choice of high quality products in a variety of materials and includes Covers and Gratings, Linear Drainage Channel, Underground Pipes and Fittings, Security Covers and Bespoke Solutions.
At Clark-Drain we continue to invest in our technology and people here in the UK and worldwide as both our national and international business continues to expand.
It enables us to apply impressive resources to product updates, bespoke development, innovative design and of course, service excellence.
Even though we have become much larger we still retain our traditional values – meeting our customer needs by not compromising on quality and being focused on the best possible service and support.
Our cast iron covers and gully gratings meet the requirements of the European Standards BS EN 124 and provide innovative features designed to make them durable, safe and easy to install.
Our steel access covers and polypropylene covers offer solid top and pavior options in various sizes and loading capabilities suited to residential, commercial and industrial building and construction.
Clark-Drain have a wide range of thermoplastic, polymer concrete and polypropylene linear drainage systems to suit diverse applications. View our wide range of options to find the loading best suited to your project.
PVCU pipes and fittings, Polypropylene Inspection Chambers (PPIC) and bottle gulleys in a variety of sizes will precisely meet your underground needs.
Complete chamber access solutions delivering cable/utility access and network protection for various applications. Central to their design is their strength. It is why we supply them to meet the specific requirements of an installation in terms of ease of use and durability in use, as complete systems, ready to go in the ground.
Bespoke solutions can be designed in a way to suit a specific application and industry need. Clark-Drain is versatile and has a depth of product knowledge which can match your requirements with unparalleled flexibility.
Including highly secure access chambers and security lids, Clark-Drain’s products are widely used within the defence, retail security, CCTV, telecommunications and financial sectors.
Lifting keys, chamber reducers and build-in step irons make up just some of the Clark-Drain ancillary items
Further technical information, image galleries and product specifications are available through the Clark Drain Ltd website or via the BPI Download Library.
These files are provided by the manufacturer. While Building Products Index takes every care to ensure the information is correct and up to date, we cannot be held liable for any out of date or incorrect information in them. Please check with the supplier before specifying or purchasing products.
1. Clark Drain at A Glance
POLYMER CONCRETE LINEAR DRAINAGE, Polypropylene covers
Published [02/07/18]File size [6444 KB]
2. Clark Drain Underground Fittings
underground drainage fixtures and fittings offer cost-effective PVC and polypropylene systems
Published [02/07/18]File size [2149 KB]
3. Clark Drain Iron Castings
ductile Iron Castings
Published [02/07/18]File size [6239 KB]
4. Clark Drain Access Chamber Systems
Chamber Access Systems
Published [02/07/18]File size [1933 KB]
5. Clark Drain Linear Drainage
Linear Drainage - Stainless Steel Edged Channel Stainless Steel Slotted Grating
Published [02/07/18]File size [5649 KB]
B125 Access Chamber System
B125 Access Chamber System Access Chambers Inspection Chambers
Published [02/07/18]File size [5652 KB]
Clark Drain 300 Series Inspection Chamber
POLYPROPYLENE INSPECTION CHAMBER SERIES
Published [02/07/18]File size [2311 KB]
Clark Drain B125 Slideout Cover
MEDIUM DUTY COVER AND FRAME, THE B125 SLIDE OUT COVER, OFFERS AN ERGONOMIC DESIGN FOR USE IN PAVEMENTS, PEDESTRIAN AREAS AND DRIVEWAYS SUBJECT TO LIGHT VEHICULAR TRAFFIC.
Published [02/07/18]File size [1208 KB]
Clark Drain D400 Drainage Hinged Cover
ductile iron, the D400 hinged cover and frame
Published [02/07/18]File size [1479 KB]
Clark Drain D400 High Max Series Drainage
Published [02/07/18]File size [6117 KB]
Clark Drain Ductile Iron Technical Specification Brochure
ductile iron access covers and gratings
Published [02/07/18]File size [16090 KB]
Clark Drain Gully Grating Series
Published [02/07/18]File size [1494 KB]
Clark Drain High Performance Gully Grates
THE CLARK-DRAIN D400 HIGH MAX Gully Grates SERIES
Published [28/02/17]File size [627 KB]
Clark Drain Highways Sector Product Selector
HIGHWAYS, COMMERCIAL ACCESS AND ESTATE ROADS
Published [02/07/18]File size [4700 KB]
Clark Drain Precinct Access Cover
Precinct range of high quality access covers are ideally suited for use over telecommunications, CATV and electrical chambers that require secure, yet frequent and easy authorised access to below ground services.
Published [02/07/18]File size [4998 KB]
Clark Drain Queen Mary University Bespoke Case Study
Published [06/08/19]File size [1016 KB]
Clark Drain Road Gully With 180GG
450MM DIAMETER ROAD GULLIES
Published [28/02/17]File size [1423 KB]
Clark Drain Sino DUCTILE IRON COVERS
DUCTILE IRON COVERS, LINEAR DRAINAGE
Published [28/02/17]File size [4696 KB]
Clark-Drain design and manufacture bespoke flush covers for Queen Mary University
Clark-Drain design and manufacture bespoke flush covers for Queen Mary University of London
When three underground chambers were required as part of a project to install a new emergency generator at a university campus in London's East End, three specially fabricated flush top covers were supplied to ensure access.
The project saw the installation of a 350kVa generator and steel mast supporting a 26m high exhaust flue, which serve as emergency back-up for the university. The design called for 150mm ducting for cables to run beneath a new tarmac surface, with three deep brickwork access chambers.
These chambers each needed bespoke 1m x 1.5m access covers.
London Surfacing Ltd, the main contractors, asked several suppliers including Clark-Drain to quote for the supply contract. Working from supplied specifications, Clark-Drain’s Specials Department created a proposal, with designs for the three covers.
London Surfacing’s Chris Stylianou says: “We were aware of Clark-Drain’s especially wide product portfolio and manufacturing capability, so we asked them what they could do for us. They won the contract not only on their ability to meet our specifications and quality standards, but also because they scored well on affordability.”
The covers were designed and fabricated in-house at Clark-Drain’s UK manufacturing facility. They were supplied to London Surfacing through George Lines, the Slough-based civils and landscape merchants.
Each of the chambers is located in an area with different maximum loads, so each cover was made to reflect this. In a pedestrian area, the cover is made to FACTA Class AAA standards. The other two meet Class B and D standards to cope with slow moving vehicular traffic. All three covers include sealing gaskets and locking systems to prevent unauthorised entry.
Chris Stylianou says: “The covers needed to be bigger than standard manhole covers so it called for tailor-made products. At Clark-Drain’s suggestion we opted for covers consisting of four parts in order to make removal easier when access to a chamber is required.”
The chequer plate covers were galvanised by Clark-Drain to BS EN ISO 1461, the key standard for galvanised coatings on iron and steel components. Application of this standard should ensure a 25-30 years lifespan with regular maintenance.
Along with specialist knowledge and manufacturing capability, Clark-Drain provides dedicated support services to projects like this one. Early involvement and site visits enable our team to advise on the best solution. Subsequent assistance including technical consultation and CAD engineering supports the quality and timely delivery of our customers’ projects.
Clark Drain - Specification - The key to effective cost management
Specification - The key to effective cost management
Avoiding under-specification on UK driveways is key to achieving cost objectives in construction. Consider for example, drainage where manhole covers with inappropriate load-bearing capacities are sometimes causing installations to be revisited by developers to make repairs, costing several hundred pounds a time.
In certain trafficking, the long term effects of undervaluing loading requirements can be easily avoided by installing a B125 (12.5T loading classification) cover as a minimum. For example, the kerb weight of a 4x4 commonly varies between 1.6 and 2.5 tonnes, depending on the model, exerting a load, when turning and braking through any one wheel of 6-10 tonnes! This is because, in extreme cases, dynamic loads apply up to 3 or 4 times the static mass of the vehicle, through a single wheel! This thought process, also benefits scenarios where infrequent traffic – skip loaders, removal vans, waste collection lorries, etc., needs access to driveways, footpaths and grass verges. Again in this instance B125 loading class should be specified as a minimum.
Fash Shahidi of Clark-Drain comments:
“The correct choice of manhole covers can have a significant impact on house building maintenance cycles and replacement costs, but are sometimes overlooked due to slightly higher purchase price or incorrect specification. Manufacturers have a duty to educate the market so that correct choices are made by house builders, driveway specialists, subcontractors and ground workers. Furthermore, in recent years loads have risen as cars have continued to increase in weight and size. What may have been installed originally to take a driveway loading may not be sufficient to avoid a manhole cover becoming bowed, cracked or broken, today. I would encourage any contractor who is unsure of the correct choice to speak directly with their manufacturer for clarification as we are here to help and support.”
At Clark-Drain, products such as the CD 761SR KMB+R are designed specifically for driveway applications, as a result of feedback from house developers who were experiencing costly breakages.
Fully Kitemark certified to Load Class B125, capable of bearing a 12.5T load, in line with BS EN 124:2015, Clark-Drain’s CD 761SR KMB+R access cover offers a long-lasting and sustainable driveway drainage solution.
Furthermore, for chamber depths more than 1.2m, the CD 761SR KMB+R is supplied with a reducer to convert the 450mm diameter clear opening to 350mm in accordance with Building Regulations Part H to restrict the size for health and safety reasons and deter entry (for example by children).