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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

designs.

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

UK Ground

Engineering Datasets

Mapping the earth you move

The British Geological Survey (BGS) has launched new

datasets for informing ground engineering design called

‘BGS Civils’.

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

• excavatability

and information on suitable zones for

excavation and the local factors controlling it;

• strength

of geological materials (rocks and fine soils);

• discontinuities

or any break or change in the rock

that could lead to a reduced strength;

• bulking

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;

• corrosivity

or the potential for the slow destruction

of a solid material by a chemical reaction;

• suitability of excavated geological material to be used

as

engineered fill

.

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

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