Llanfoist WwTW



Project Value
Industry Sector
Water & Wastewater
Client Company
Project Timescale
2017 – 2018
DJI 0032 (2)
IMG 9372
DJI 0036
DJI 0003
DJI 0038
Gk14   14 03

Llanfoist Waste Water Treatment Works is part of the Welsh Water investment under the AMP6 framework.
Welsh Water needed to increase the capacity of the plant and appointed Skanska to upgrade the existing WwTW which includes sequential batch reactors/treatment tanks

Westshield were appointed by Skanska to deliver the installation of the precast units and the construction of the wet concrete elements to provide the new sequencing batch reactor (SBR) structure.

The Technical Aspect:

  • Pile cropping and pile cap construction
  • Reinforced levelling pads
  • Installation of pre-cast panels
  • Reinforced slab construction and insitu wall stitches of the tank
  • Developed a system to pour the full 7m height of wall stitches in one single pour, utilising self-compacting concrete.
  • Utilised Bamtec reinforcing bar system for the base slabs to allow the slab reinforcement to be delivered to site on a roll, which enabled quick and efficient installation, reducing safety hazards and reducing resource numbers.