Leamington Spa 3.5km main sewer upgrade
As part of a £9m investment by Severn Trent Water in Leamington Spa, NMC Nomenca are upgrading 3.5km of existing combined sewers under public highways throughout the town. With a firm commitment to minimize disruption and H&S risk to the local community, NMC were keen to explore options that would achieve these objectives, together with providing genuine installation efficiencies and cost reduction.
On average, AquaSpira composite pipes weigh just 4% of equivalent concrete pipes, which in itself enabled safer handling and easier storage on site, but the primary benefit gained by NMC was a major reduction in plant size and the ability to use ‘rubber duck’ machines, eliminating any risk of damage to the pavement surfaces.
Another key benefit is the reduced OD of the pipes, which not only meant that trench widths were reduced, but also resulted in an average 15% reduction in excavation and cart-away requirements.
The 3m length pipes with spigot and socket push-fit joints were extremely quick and easy to lay, and with the added features of the small OD and exceptional light weight, the normally daunting task of laying pipes in close proximity to a myriad of other services was made much easier.
Further information is contained in a Severn Trent Water ‘Innovation Bulletin’, written by their Technical Standards Group in response to the notable success of the project for all parties concerned.