Dunmaglass Wind Farm


Project Description

SCOPE OF WORKS 140 No. Steel Tube Piles



CONSTRUCTION PERIOD November 2014 – April 2015

Aarsleff Ground Engineering were awarded the piling contract
for one of the UK mainland’s highest onshore wind farms for
contractors R J Mcleod Ltd. Because of its geographical position,
Dunmaglass (based in Scotland) is ideally located to benefit from
the strong winds in the area, but posed a challenge in terms of
construction due to the potential for adverse weather conditions.

Specifically, Aarsleff installed 140 No. steel tube piles for 4 wind
turbines which were situated approximately 25km south of
Inverness, Scotland. Aarsleff utilised its Junttan PM20-HLC fitted
with a 7T accelerated hammer to drive the piles.

The works commenced at the end of November 2014, however
due to heavy snowfall the project was stalled for 3 weeks.
Aarsleff returned in April 2015 to complete the works once the
snow had thawed. Working on one of the UK mainland’s highest
onshore wind farms proved to be challenging.

The turbines sites were extremely remote from the main
compound (approximately 15km away) and with an average
altitude of 700m above sea level, on the edge of the Cairngorm
mountain range in Scotland. The Junttan rig got snowed up to its

Throughout the project, Aarsleff worked closely with the client
to ensure that the works were done safely, and everyone got off
the hill before the weather became too extreme, on a daily basis.
Work took 5 weeks, on programme (not allowing for inclement

Case Study

A leading UK ground engineering specialist, focusing on multi-discipline excellence and value engineering. We design and deliver some of the UK’s largest ground engineering projects.

Our vision is to bring confidence to those constructing the landscape of tomorrow .

1947. Central Jutland, Denmark. Per Aarsleff borrowed 10,000 Danish Kroner from his father’s life insurance, bought an excavator, and founded Northern Europe’s leading contracting company.

Our biggest asset, our team is composed of the leading experts in ground engineering. Working with collaboration and cohesion at the core of our business, we can guarantee a quick and founded answer to all your questions.

We recruit and reward our people based on our ‘Step into the Blue’ company culture, where we embrace the core values of Life and Health, Trust, and Responsibility.

We do everything to ensure our team and yours work safely on our sites. With our core value of Life & Health, we see safety as a cultural pillar.

Our ISO accreditations are an assurance to you that we take governance seriously. Read our policies to discover more.

The projects that keep society running. Bridges, buildings, transit and rail facilities, embankment support, marine and offshore facilities, mines, airports, and water projects.

Keeping things turning. Sewage Treatment Works, Waste Water Treatment Works, Wind Farms and Wind Turbines, Biomass Plants, and Power stations.

Meeting society’s needs. Nursing and care homes, MOD buildings, Schools and Universities, and small or large-sized residential developments.

Staying on the move. Remediation, bridges, and foundation work are integral to keeping the industry running smoothly.

The landscape of the marketplace. Mega-retail sheds, distribution warehouses, University accommodation, and major supermarket and household name units.

Keeping things afloat. Ports and harbours, coastal defences, river embankments and inland waterways.

Technically trained estimators and a dedicated, in-house design team means we consider value-engineering at every stage of your project.

More than just a model, Visual Design & Construction is a tool to encourage collaboration and improve quality across all facets of a scheme.

From large commercial sheds to small residential plots, piling could be the foundation solution you need to support your project.

Issues around collapse, slipping or erosion? Our experts in retaining solutions have a broad portfolio of techniques designed to fix even the most nuanced of sites.

Tricky ground conditions or requirements? Aarsleff’s ground engineering team work on stabilisation through a varied range of techniques, bespoke to the properties of your site ground.

Our plant workshop offers a range of services designed to ensure your plant works for you. Whether it’s manufacturing and fabrication of equipment for long-term needs or hire so you can complete something specific.