Picketlaw Main Out

Project Details:

Picketlaw Main Out

AG Wilson was appointed by Caledonia Water Alliance as main contractor to deliver a critical upgrade to water infrastructure for Scottish Water customers in Newton Mearns, Eaglesham and East Kilbride. The project involved installing 10km of 400mm polyethylene pipe within a strict 52-week programme. AG Wilson was selected for its proven track record in complex infrastructure delivery and its strong focus on innovation, safety and environmental stewardship.

Engineering Challenges and Innovations

The scheme required 10 stream crossings, each demanding close coordination with the local fishery department. Electronic fish rescues were carried out before, during and after each crossing to protect aquatic life, while waterways were kept flowing continuously - no damming or over-pumping was permitted.

To meet programme demands, AG Wilson deployed a tracked 35-ton trencher, capable of cutting 10,000m of trench per day at 700mm wide and 1.4m deep. This innovation allowed faster installation, reduced spoil excavation and produced a neater trench profile. Additional innovations included Bluetooth torquing tools and GPS-tagged welds, ensuring precision and traceability throughout the pipeline installation.

Logistics and Collaboration

Operating in a remote area with single-track roads presented significant supply chain challenges. Planning had to account for school bus schedules, milk tanker collections, harvest and lambing seasons. AG Wilson worked closely with local farmers to maintain access and minimise disruption, ensuring agricultural operations continued smoothly alongside construction.

Sustainability at the Core

Environmental responsibility was central to the project. Key measures included:

• Battery-powered hush pod for site offices and canteen, supplemented by solar panels.
• Use of HVO fuel in generators, significantly reducing carbon emissions.
• Plant and materials sourced within a 10-mile radius to cut transport emissions.
• Vehicle sharing among crew members to reduce traffic and carbon footprint.
• Close collaboration with environmental teams to protect natural habitats.

Community Engagement

Public impact was carefully managed. All operatives received site-based inductions emphasising respectful interaction with the public and prompt reporting of issues. The team also hosted a school visit from Auldhouse Primary, featuring safety mascot BeSafe Bert, reinforcing AG Wilson’s commitment to education and community engagement.

Project Outcome

Through pioneering engineering solutions, industry-leading digital quality control and seamless stakeholder collaboration, the project was delivered ahead of programme and within budget, despite the harshest Scottish winter since 1910. The project not only improved water quality for thousands of Scottish Water customers but also demonstrated AG Wilson’s ability to combine technical excellence, sustainability and community benefit