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The project used deep soil mixing to improve the bearing capacity of the site’s soil, (a mixture of heavy clay and peat), by mechanically mixing it with cementitious and other binders. This avoided having to replace the soil with imported fill material. Not having to excavate and cart away unsuitable soil and import replacement fill material led to a significant…

This contractor is using a process to reuse coal tarmac from existing roads for new road infrastructure. This method involves treating the old tarmac and converting it into cold-lay tarmac, which is a first on the council’s roads. This approach not only reduces waste disposal costs and reliance on virgin materials but also lowers carbon emissions due to its energy-efficient…

This contractor is using hydrogen and electric Mobile Elevating Work Platforms (MEWP). This equipment was hired from Speedy and can be charged from mains power, but its battery lasts for the full duration of use without needing hydrogen. As a result, zero emissions were produced during its operation. The MEWP combines the benefits of hydrogen and electric power to create…

The ground conditions at this project are highly complex due to the local geological composition. Thus, traditional ground stabilisation methods could not be conducted onsite. The project team had to collaborate to challenge such methods in order to deliver the methods successfully, sustainably and without compromising viability. Rather than using the traditional auger bore method which is expensive, in terms…

This contractor has entered into a strategic partnership with Carlton Power to supply it with green hydrogen for its manufacturing facility at Stirling, Scotland. The hydrogen will be produced by an electrolyser using electricity that is generated from sources of renewable energy, primarily wind and solar power. The contractor wanted to make the transition from fossil-based fuels to hydrogen in…

The facilities on this site would generally need a generator in order to run the equipment required or a temporary electric connection, which would be quite time consuming. The contractor is therefore using an ‘AMPD’ battery bank to avoid the need to bring on a generator. The unit takes a small charge trickle feed to charge a battery, which in…

The project is using a battery powered heavy duty pallet truck to move materials around site, in place of the diesel powered telehandler. The pallet truck has pneumatic tyres enabling it to travel over relatively rough terrain. Using battery operated plant helps to reduce the site’s carbon emissions. The pallet truck is also used to move materials within the building,…

A key client focus on this project is to achieve the highest standards of sustainability through the retention of the existing structure and the reuse of materials where possible. Surplus materials were made available to local schools and charities, with almost £4,000 worth of furniture donated to two local charities (St Mungo’s and Local National Park City). A combination of…

Most excess concrete is disposed of in standard waste skips, lined with plastic sheeting. This contractor has developed vessels for collecting concrete that are tailor made for this and will not require using plastic sheeting, which is a waste product in itself. The vessels are also designed to prevent overfilling, which is an industry issue that affects the collection of…

Cement Bound Granular Mixtures (CBGM), is an extremely durable and economic construction material used in both foundation and structural pavement layers. CBGM uses 100% recycled aggregates which increases sustainability with no effect on the quality or cost. The Environment Agency recognise cold recycled bound materials (CRBM) as a stabilising technology for hazardous materials specifically asphalt waste containing coal tar. There…

On this project, they have created and displayed a poster which details a contractor league table for carbon emissions. This is based on various information which is provided by workers at their induction. This initiative has been implemented to encourage car sharing and use of less polluting vehicles.

This contractor has implemented an in-house carbon reporting system. Two baseline forecasts (conforming and alternate design baseline) are calculated for the project, which provides insight into the expected variation in CO2 throughout the project. Via a simple but effective digital tool, the site record the quantities of each carbon emitting source used on the project. All data is evidence based…

Roller compacted concrete has been used for temporary works on this project as opposed to traditional asphalt. This solution is fully recyclable and can be manufactured on or close to site on a small footprint allowing for rapid deployment. By reducing the need for asphalt and replacing it with roller compacted concrete, road surfacing is quicker, cheaper and renewable. This…

During the removal and disposal of the single glazed windows, this contractor sent the windows to a manufacturing facility to reprocess the glazing into a worktop which was then installed in the fit out of the project. They managed to provide the manufacturer with a total of 360 windows (3,500kg of glass), of which they have incorporated 1,500kg back into…

This contractor installed spun concrete structural columns as an alternative to steel section columns as a less carbon intensive and more efficient install. The spun concrete increases strength when compared to traditionally cast concrete as it removes air pockets (C75 to C110 MPA), with the process having less than half the embodied carbon of the equivalent steel section. This process…