Years of exceptional performance
We are proud to announce that two D400 Highway covers, which were supplied to Scottish Water three and a half years ago, are still operating at full capacity despite being subjected to high levels of HGV traffic directly on the wheel line.
The D400 Highway manhole covers were supplied as a first part of the Scottish Water framework, on 1 July 2018. Installed by NMC Drainage, the covers were situated on a category A road by the Newhouse Industrial Estate, which is home to both Malcolm's Haulage and the Co-op Newhouse Distribution Centre.
Due to the size of the distribution sites, there is a high density of HGV traffic and, as a result, the covers are under constant, regular and intense pressure – making it all the more impressive that, after three years and a half year, they are not exhibiting any signs of fatigue and that there is no noise or movement coming from the covers.
However, this is to be expected with our Highway D400 covers as they have been designed, tested and manufactured to meet the enhanced requirements of Highways England’s CD 534 (formerly HA 104/09) specification. The enlarged frame corners help to dissipate loads into the foundation, indexed corners to ensure correct orientation first time, and can be retrofitted with a customer or application specific ID badge.
Scottish Water began using Highway Covers in July 2018. Since making the switch from other manufacturers, the number of defects Scottish Power has noted is close to zero, meaning the organisation can focus solely on new work, rather than being distracted by manhole covers that have failed prematurely and need fixing or, in some cases, reinstalling.