Dalmuir Waste Water Treatment Works

DRIVING OF PRECAST PILES FOR AN EXTENSION AT A WASTE WATER TREATMENT FACILITY

 

Project Description

SCOPE OF WORKS 335 No. 250mm, 300mm & 350mm Precast Concrete Piles

CLIENT Saur Services Glasgow and Capita Symonds

EQUIPMENT Junttan PM20

CONTRACTOR MWH

CONSTRUCTION PERIOD January 2014

Aarsleff completed the installation of more than 300 precast
concrete piles to create the foundations for an extension to a
waste water treatment facility for Saur Services Glasgow at
Clydebank. The project for MWH, the global wet infrastructure
engineering consultancy on behalf of Capita Symonds and Saur,
the operators of the Scottish waste water treatment works, was
completed exactly on schedule.

“I was very impressed with the site crew,” reported Stefan
Erbes, site manager for MWH. “We had prepared the site which
has a lot of made up ground, in line with the platform layout and
specification. However it was found that the operating space
was limited but the Aarsleff crew worked around this problem
and did not lose any time.”

The Dalmuir site treats 378,000m³ of waste water daily and
requires increased sludge treatment capacity. The new sludge
management building holds increased centrifuge capacity to
increase water removal and also to improve the quality of the
waste water discharged under license into the River Clyde. The
new operation will be ready for commissioning in Spring 2015.

The piling design was developed by Capita Symonds in
association with MWH and Aarsleff’s own in-house technical
team. The 335 precast concrete piles were driven into position
by a Junttan PM20 piling rig with a six tonne accelerated hammer
from Aarsleff’s own comprehensive fleet. The project took six
weeks including the associated dynamic testing. 166 piles of
350mm x 350mm achieved loads of 1150KN-1250KN and were
driven between 14m-21metres as were the 155 piles of 300mm
x 300mm which achieved loads of 700KN-800KN. Fourteen piles
250mm x 250mm were driven between 13m-20metres to achieve
loads between 175KN and 600Kn.

Dan Broadley of Aarsleff confirmed that the piling project ran
smoothly. “Although the location is quite remote, access was not
a problem for the rig and the pile deliveries. There were deep
excavations for the base storage facility so we had to carefully
manage the rig movements and the piling action. It all ran
perfectly.”

The Centrum Pile System of precast reinforced concrete piles
installed by Aarsleff are manufactured by subsidiary company
Centrum Pile Ltd at the state-of-the-art facility at Newark,
Nottinghamshire. With headquarters in Denmark, the UK facility
is one of four including Sweden and Poland, which give a
production capacity of 3.2 million metres of piles annually.

Casting is a fully automatic process using bespoke machines
designed by Centrum specifically for pile production with
self compacting concrete which does not require vibration.
Detailed mix and product data records are maintained for full
product traceability, which can be seen on each pile’s barcode
reference.

Piles are manufactured in sizes from 200 x 200mm up to 450
x450mm in lengths from 4m-15metres with the high-grade steel
reinforcement being incorporated during fabrication.

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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.