November/December 2022 - 56

DFI EUROPE MEMBER: FUGRO
Full-scale Static Bi-directional O-cell Foundation Testing
to Optimise Foundation Design Safely and Sustainably
Worldwide awareness of climate
change continues to increase, as do calls
for action. Reducing our carbon footprint
is a priority if we hope to minimize the
impact of global warming. Concrete
production is responsible for 5-7 percent
of total CO2 emissions worldwide. The
construction industry, and in particular
the foundation industry, can take steps
to reduce their contribution.
Accurate foundation design is a
critical area for efficient use of concrete
and steel in the ground. Calibration of
the design of foundations can unlock
huge savings in terms of material usage
and project timescales and these are
best done by full-scale load testing to
evaluate the pile or barrette behaviour.
Bi-Directional Pile Load
Testing
Full-scale static load testing can be
performed by either applying the full
test load at the head of the foundation
in the traditional manner, with
kentledge or a reaction beam and
anchor pi les, or performed bi -
directionally by casting the loading
element within the foundation itself. Ocell
bi-directional load testing can be
used to verify the pile performance and
compare it against the design in the
most efficient, safe and cost-effective
manner of all types of foundations,
particularly for larger test loads.
Geneva Case Study
In Geneva, we were involved at a project
for the extension of a factory. A
traditional, nominally cylindrical pile
design would be the foundation for the
toe of the piles in the moraine, but
instead an alternative pile installation
technique using a ream was considered
and the behaviour of two test piles
verified with O-cell tests. The reamed
56 * DEEP FOUNDATIONS * NOV/DEC 2022
design piles have a significantly smaller
diameter and significantly reduce the
volume of the piles and therefore the
material extracted, concrete used, transport
requirements, etc. The alternative
pile design reduced more than 400
tonnes (440 T) of CO2 emissions. Also, the
use of electric concrete trucks at another
project in Geneva reduced the of CO2
emissions as well.
High-Speed Rail Across Europe
Fugro is also involved in numerous
sections of High Speed 2 (HS2), the U.K.'s
new high-speed rail network, including
foundation testing programs. HS2 will
integrate new railway lines and
upgrades across Britain's rail system to
deliver faster travel to many towns and
cities not directly on the HS2 route,
including Liverpool, Sheffield, Leeds,
Nottingham and Derby. HS2 trains will
be powered by zero carbon energy for a
cleaner, greener future. A recent project
was the foundation test program at
Birmingham Curzon Street Station. Two
key benefits of this full-scale pile
testing program are the savings on
materials due to shorter pile lengths
and increased design confidence. We
are involved with the construction of
high-speed rail lines in other countries,
including Italy, which is pursing rail as
a clean and green solution to transportation,
one of the largest sources of
carbon emissions. Fugro has been
involved with bi-directional load testing
to support this green goal.
Submitted by Melvin England and Maarten
Profittlich, Fugro Foundation Testing
(Loadtest)
Handling a reinforcement cage with built-in O-cells
Electric trucks in Geneva

November/December 2022

Table of Contents for the Digital Edition of November/December 2022

TOC
November/December 2022 - Intro
November/December 2022 - 1
November/December 2022 - 2
November/December 2022 - TOC
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