Contractors World International
Dr Stergios A Mitoulis, Lecturer of Bridge Engineering,
Department of Civil and Environmental Engineering at
Surrey University told Contractors World International
that, at this time, this is a theoretical model. However,
they are in discussion with TonyGee Consultants who
are looking to apply the idea in one of their future bridge
University & Industry Collaboration
This is a perfect example of how universities work with
industry to lead developments that satisfy so many as-
pects - ecological, environmental, economical, infra-
structure development and social.
Developing countries can suffer when vital infrastruc-
tures are severely damaged due to extreme ground
movement, so this low cost, maintenance free solution
to bridges will be of significant interest. It may be pos-
sible to further develop the concept to protect river
embankments from erosion and protection of bridge
piers from scouring.
Many countries also lack the industrial recycling
centres that can shred tyres for other applications. As
a result, used tyres are simply thrown to the side. More
than an eye sore, they pose a potential danger for chil-
dren and animals as well as collecting water in which
mosquito carried diseases can breed.
This is an ecological means of recycling old tyres for
which even developed countries will find applications.
Readers may also want to read the article“Economical Design Of Earthquake-Resistant Bridges”
and“Earthquake Resistance of Integral Abutment Bridges”
that look at other aspects of making integral bridges
better able to withstand earthquakes.
CONTRACTORS WORLD INTERNATIONAL thanks
Dr Stergios A Mitoulis,Department of Civil and
Environmental Engineering, University of Surrey for
providing the article and illustrations
•University of Surrey
Senate House, Guildford, Surrey, UK
Mapping the earth you move
The British Geological Survey (BGS) has launched new
datasets for informing ground engineering design called
The package includes a suite of seven engi-
neering properties for soils and rocks nationwide
and has been developed to facilitate desk study
screening for ground engineering projects.
Properties of rocks are important in all engi-
neering projects and the new maps provided by
BGS Civils will for the first time deliver this infor-
mation efficiently to those undertaking desk stud-
ies. The information will enable planning of fo-
cussed specific site-design and will inform
engineering geologists and ground engineers at the desk
study stage of investigation.
The seven engineering properties for soil and rocks
included within the dataset are
and information on suitable zones for
excavation and the local factors controlling it;
of geological materials (rocks and fine soils);
or any break or change in the rock
that could lead to a reduced strength;
or the increase in volume when excavated
from its insitu location;
• sulfate and sulfide
potential in rocks that can give
rise to aggressive ground conditions;
or the potential for the slow destruction
of a solid material by a chemical reaction;
• suitability of excavated geological material to be used
Dr Kate Royse, Director of Environmental Modelling
and Product Development, said :
“Properties of earth materials are important for
all engineering projects and the new data
product provides a quick way of getting a generic
assessment of the likely ground conditions at
the pre-tender and desk study stage.
“This should make tender preparation,
planning and execution of ground investigations
far more efficient and reduce project overspend.
In addition, as Building Information Modelling
(BIM) becomes the norm for all UK government
procured projects, BGS Civils can be used in con-
junction with BIM applications”.
The engineering property data will be of interest to
organisations concerned with development including
utility companies, local authorities, developers and en-
gineering consultants and contractors.
•British Geological Society
Map of excavatability - helping identify which tool is
needed to excavate to 2 m below ground surface.
Contractors World International Vol 7 No 4