• Customer: Lingfield Gardens
• Contractor: Obsidian Developments Ltd
• Project size / Area sq ft: 395m3 attenuation tank
• Products used: StormForce using Wavin AquaCell Core R

The Challenges
Welsh Water looks to safeguard the environment and provide a more sustainable future for the communities in which Lingfield Gardens will be a part of. The residential development therefore needed to create a design for an attenuation tank which adhered to Welsh Water’s requirements. Additionally, the tank needed to withstand lateral loadings, accommodate the required amount of storage volume, and fit into the small area mapped out.

Not only did Obsidian Homes require the design of a tank, but they also wanted the full package of supply and installation. Due to the tank having to meet specific requirements, the developers wanted to mitigate the risk of installation and have another party complete the task.

A careful consideration for logistics was essential due to the lack of space on site. The Wavin AquaCell units could not be delivered all at once or stored on site for installation to happen another day.

The Solution
Over a 3-month period Wavin Technical Design worked with Obsidian Homes engineer, CB3 Consult, to develop a suitable design. To meet Welsh Water’s requirement, structural and hydraulic calculations were made alongside comprehensive design drawings. To keep the client’s up to date with the process and informing them about the product, Team’s meetings and on-site meetings were held prior to the installation.

Obsidian Homes wanted the full package of design, supply, and installation in which Wavin StormForce provides the single source solution. Wavin StormForce takes away the risk and hassle of the client and supplies a high-quality end-to-end solution. From consultation to handover and warranty, Wavin StormForce provide fast and efficient expertise in rainwater soak away solutions.

Obsidian Homes also wanted Wavin to provide other Below Ground products, including Twinwall, a cost-effective way of controlling infiltration, reducing the volume of water required to be drained at the endpoint. The materials used are developed by Wavin’s in-house technology to maximise the use of recycled material.

The delivery of the AquaCell units was done just-in-time as they built each layer of the tank. This was done in two visits to the site, the first visit consisted of installing four layers and the second visit installed the upper 3 layers.

Wavin effectively collaborated with Obsidian and CB3 Consult from the onset and built a good relationship with both which meant that the supply and installation of the tank was a success.

Stormwater design, supply & installation – sorted
StormForce is the service that developers, tier one design and build contractors and civil engineering firms have been waiting for.

A high quality, single source solution to the design, supply and installation of stormwater tanks and all their associated infrastructure, from capture and attenuation to dispersal.

End to end, everything is taken care of by Wavin – they consult and advise on site, value engineer the optimum design, they manufacture and co-ordinate the required products and components, install through fully trained StormForce partners, and underpin the installation with a five-year warranty.

It’s the future of sustainable drainage. It’s fast and efficient. It’s hassle and risk free, and it’s quality and compliance assured. It’s StormForce, and it’s one less thing for you to worry about on every project you undertake

"At Obsidian Homes we pride ourselves on creating beautiful harmonious spaces, with a sense of peace and tranquility. It was important to us to tackle the risk of flooding and the disruption this would cause to our communities. Wavin Core R was the obvious choice for us as we are able to ensure adoptability and inspectability with Welsh Water. The StormForce team provided a smooth and seamless install, I would highly recommend"

  Huw Morgan, Director, Obsidian Homes