In this issue
of a one-stop-shop mapping service
Useful Links & Recent Publications:
of high speed GPR to manage trackbed assets and renewal
PWI paper presented in Sydney, June 2006
of detection of unexploded ordnance – are you getting what you paid
White paper on physical limits of detection for
surface- and borehole-based geophysical methods
matrix for road or motorway applications
The US Federal
Highways Dept has published a very useful matrix of geophysical and
NDT methods for solving engineering problems during SI, construction
and maintenance of road infrastructure.
WW2 bomb risk
Download risk maps for your region
the risk of detonating unexploded bombs
Web-based applet to
allow users to input parameters and calculate an order of magnitude
risk of detonation
of detection of unexploded ordnance – are you getting what you paid
White paper on physical limits of detection for surface-
and borehole-based geophysical methods
assessment of the risk of unexploded bombs
Paper published in
Ground Engineering, May 2006
Open Days: 20-22 May 2008
Zetica will host a series of Open Days from the 20th – 22nd May
to raise awareness of contemporary non-invasive site investigation
methods. The theme of the first two days is ‘Reducing risk through
smart site investigation’. The theme of the third day is
‘Contemporary site investigation solutions for trackbed
Click on the following images if you are
interested in attending one of our open days.
This is a unique opportunity to see a wide variety of methods in
use and gain a better understanding of how these methods work.
Non-intrusive methods including surface wave seismics, seismic
refraction, borehole seismics, electrical resistivity tomography,
magnetics, electromagnetics, microgravity, ground penetrating radar
and radio frequency location will be demonstrated. In addition
intrusive techniques such as the CPT-based MagCone system and
MagDrill used for deep UXB detection will also be on show.
These above-mentioned tools will be displayed in the context of
various applications on the test site such as the utility services
detection test area, battlefield UXO detection area, buried tanks
area, and geological boreholes.
In addition the Zorn light drop weight tester and intrusive
techniques such as the SERB ballast sampling system and the world’s
first road-rail/CPT system will also be on show during the Rail Open
Day. Examples of automatic above-ground rail asset surveying methods
will be demonstrated including detection of sleepers, clips,
expansion joints, rail surface defects etc.
Two lucky attendees on each day will win a flight over
the local Cotswold area in a light aircraft.
Term commissions and new investments in
The past 12 months has seen significant growth in the number of
call-off contracts won by Zetica Ltd in the UK and abroad. These
cover utilities services mapping, engineering geophysics for
structures assessment, and rail geophysics for ballast and
To better manage these contracts Zetica has invested in new
survey equipment including robotic EDM’s, RTK-GPS, multichannel GPR,
seismics and borehole seismic equipment.
Mike Sainsbury, MD, says: “The cost benefits of a flexible
call-off service contract to customers is evidenced by the
significant growth in such commissions this year. We are continually
upgrading our technical capabilities with more focused training of
survey personnel and data processors, new software development and
investments in hardware. We are committed to providing an
ever-improving service to all of our customers.”
Large area Landsweep™ survey carried out
on RAF base
Zetica recently carried out a magnetometer and electromagnetic
survey over more than 40ha using an integrated survey systems
platform called the GEEP. The contract called for survey operations
around an active runway at night which necessitated expediting site
works. Use of the GEEP significantly cut down the time required to
complete the survey.
Extract from an EM dataset with survey
lines superimposed. Data collected using a Land Rover-towed
integrated geophysical systems platform.
In addition to the Landsweep™ survey, Zetica also carried out
detailed utilities services mapping and UXO clearance scans across
various areas of the site.
to request more information about our Landsweep™
Reduce risk through smarter site
Zetica combines non-invasive scanning techniques with a practical
knowledge of construction risk issues to obtain high-value
information about the underground environment. The cost savings in
outsourcing site-mapping services to one company are considerable
and the improvement in the resulting ground model can also
significantly reduce the risk of development.
Zetica offers specialist desktop studies, detailed topographic
surveys, LandsweepTM geophysical surveys, specialist UXO surveys,
detailed utility surveys and engineering geophysical surveys. Our
multifunction crews are trained to carry out all site work reducing
the amount of time the client needs to spend directly involved with
Case study: A recent survey for a former military airfield site
included topographic surveys (together with internal building
surveys), Landsweep™ and Utility services detection surveys, UXO
surveys, ground investigation of anomalies, boreholes and trial
pits, and an asbestos survey. In the words of the client:
“Zetica’s ability to provide a multi disciplinary range of
ground investigation services has helped us no end. Zetica have
carried out a range of services for us including below-ground
services and features/obstructions mapping, building surveys, and
large scale topographical surveys. These services enable us to
‘de-risk’ our projects by finding out more about what is on the
ground (and in particular what is under the ground) at our sites,
before contractors find the problems for us. The cost of
comprehensive surveys is small compared with the re-design, delay
and disruption caused by project delays when unforeseen obstructions
are encountered. The health and safety advantages of below-ground
mapping are obvious.”
to request more information.
Copyright © 2008
Progress on high speed rail GPR
contract for Network Rail
Zetica's contract to scan 16,000km of track in the United Kingdom
for Network Rail with ground penetrating radar (GPR) systems mounted
on an ultrasonic inspection train is being extended. Zetica’s
Advanced Rail Radar (ZARR) will now be fitted to an additional two
inspection trains to increase annual coverage to over 24,000km.
A combination of high resolution scanning of ballast/sub-ballast
layers and identification of deeper secondary layers in the
sub-ballast/sub-grade section has proved to be very successful in
meeting the primary project aims.
Asger Eriksen, CEO of Zetica says: “The savings realised by
Network Rail in implementing ZARR have been significant. The
successful trial and planned roll-out to 3 trains reflects the
professional efforts by our rail team and the E&D department at
Network Rail to ensure that the high volume output from ZARR is
useful to track engineers for planning maintenance and renewals and
always available on time.”
to request more information on ZARR.
Zetica Rail signs contract to deliver ZARR to rail company in the USA
Zetica has signed a contract to scan 5,000km of track for one of North America’s largest rail companies responsible for over 30,000miles of track. The survey is the first commercial scale GPR project on rail to be carried out in the USA and will be used to assess the value of ZARR in helping to improve the return on investment in track works programmes.
Jon Gascoyne, Technical Manager of Zetica Rail says: “The main focus of our customer is the quality of ballast on the shoulders and in the 4ft. A specially modified road-rail vehicle and software system for integration of the results with our client's track management database is being provided.”
Significant investment in
Zetica continues to add features to its state-of-the-art test
site in Enstone, Oxfordshire. This unique facility is used for
validating surface and borehole geophysical equipment, training
technicians and carrying out research.
Heythrop Country Park,
The limits of detection of geophysical survey equipment are often
misunderstood leading to erroneous claims of success.
Zetica’s test site offers a control environment for
proving and improving survey effectiveness for:
- detecting buried hazards such as underground storage tanks and
- locating UXO items of varying sizes buried at various depths
- locating UXB of various sizes using surface and borehole
- NEW - detecting buried services and shallow voids beneath made
ground and reinforced concrete
- NEW - investigating trackbed with known ballast conditions,
sleeper types, buried obstructions and cross-cutting utilities
- deriving geotechnical properties using surface and borehole
3D CAD drawing of trackbed design and photos showing build in progress and finished product
to request more information.
Health & Safety qualification
Congratulations to recently appointed Zetica Project Manager, Rob
Grant, who has successfully completed the CITB Site Management
Safety Training Scheme course for site managers.
Rob says: “Zetica’s role in surveying sites often before ground
improvements have taken place, means that H&S issues are very
important from the point of view of protecting our own operatives
but also because the maps we provide reduces the subsequent risk of
encountering hazards when ground works actually start.”
Zetica offer a popular seminar on the
uses and abuses of geophysics. Engineers are brought up to
date on the latest geophysical methods available in the market place
and interesting areas of research and development. The presentation
normally lasts 45 minutes and is case history-based with a 15 minute
discussion session following.
Click here to
email Ellen Stevens to discuss your requirements and arrange a
seminar at your