Hitachi electric excavator powers Amsterdam's canal restoration project

Amsterdam's iconic canal walls are undergoing a crucial restoration process with approximately 200 kilometres in need of replacement. The endeavour presents numerous challenges, including houseboats, widespread tree roots, and limited workspace, particularly in the city centre.

To address these complexities, H van Steenwijk BV has developed an innovative method, leveraging the emission-free capabilities of the Hitachi ZX55U-6EB electric mini excavator.

A sustainable construction project

The ongoing project focuses on a section of the Waalseilandsgracht, where a 50-metre stretch of canal wall had deteriorated to the extent that traffic was diverted away from the quay to reduce stress. The restoration efforts aim to reinforce the quay, restore its functionality, and minimise disruption to the surrounding area, which includes residential houseboats and trees lining the canal.

Established for over 193 years, H van Steenwijk BV brings extensive expertise to the restoration process. Recognising the pressing need for sustainable solutions, the company introduced "The Steenwijk Method" in 2021, successfully piloting it on the Prinsengracht. This method focuses on minimising environmental impact and optimising cost-efficiency by replacing a portion of the existing wall while preserving the rest, effectively extending its lifespan.

Leveraging compact equipment

The Steenwijk Method incorporates innovative techniques such as grout injection piles and a concrete plinth to reinforce the existing structure, while an underflow barrier mitigates the risk of erosion. For the Waalseilandsgracht project, a bespoke wooden barrier with a 30-year lifespan was designed. Leveraging compact equipment allows for minimal disruption to houseboats and pedestrian traffic, while preserving the canal-side trees.

Electric excavator is the perfect fit

One of the method's key advantages lies in its use of small, electric machinery, such as the Hitachi ZX55U-6EB. This five-tonne battery-powered mini excavator, identical in size to its diesel counterpart, offers versatility for various tasks throughout the project. From groundwork to demolition, the machine's electric operation, combined with the use of expansive cement instead of hydraulic breakers, minimises noise pollution and reduces disturbance to the surroundings.

For the Waalseilandsgracht restoration, H van Steenwijk BV hired the mini excavator through the Hitachi Premium Rental programme. The machine offers dual power capability, allowing operation via a 39 kWh lithium-ion battery or direct connection to a power source.

During drilling operations, a 20-foot battery container facilitated charging for both the drill rig and the mini excavator, with additional charging points provided by the Amsterdam municipality, ensuring uninterrupted electric operation throughout the day.

Embracing emission-free construction

By embracing emission-free technology and innovative restoration methods, Amsterdam's canal walls are not only being preserved for future generations but are also contributing to the city's sustainability goals. As urban environments face increasing challenges, such initiatives underscore the importance of integrating environmentally conscious practices into infrastructure projects.