is a brief summary of some projects on which our instruments have
in countries around the world have used our instruments. Countries
include USA, China, Spain, South Africa, Brazil, Switzerland, Colombia,
New Zealand, Kenya, Pakistan, Algeria, Indonesia, Thailand and Australia.
Dams of all kinds are instrumented including rockfill, earth, roll-crete
Many subway systems in major
cities all around the world have used our instruments. We are a specialist
in the supply of instruments for the NATM method of tunnel support.
In addition to almost all major cities in the USA, we have instrumented
subway systems in Seoul (Korea), Taipei (Taiwan), Guangzou (China),
Istanbul (Turkey), Hong Kong, Singapore and London (UK). We also have
instruments in the Channel Tunnel.
Many mines, both underground
and open pit, have used our instruments to monitor the stability of
the underground openings or the pit slopes. Mines instrumented occur
in USA, Canada, Mexico, Chile, Australia, New Guinea and Zaire. Of
particular note is a full scale mine wide monitoring system installed
at J.M. Asbestos, Quebec to warn of possible collapse of the open
Urban environments require
extensive monitoring of the ground around excavations plus the monitoring
of the excavation supports themselves, e.g. slurry walls, tiebacks,
and cross-lot struts. Many major cities throughout the world have
used our instruments in these situations.
We are a leader in the instrumentation
of piles, both steel and concrete, driven or cast-in-place. Many important
projects utilizing coffer dams and sheet piling have been instrumented,
plus pilings on foundations of major buildings in cities throughout
the world. The Petronas Twin Towers, the tallest building in the world,
in Malaysia uses our gages.
We have been involved
in the instrumentation of nuclear waste repositories in the USA, Germany,
Sweden and Belgium. These applications called for special high temperature
devices capable of withstanding high radiation levels. Our willingness
and ability to innovate enabled measurements to be made where other
commercially available devices failed.
Over 300 dataloggers are in
use gathering data from important projects throughout the world. Our
dataloggers are renowned for their low cost and reliability in difficult
environments. Dataloggers are readily adaptable to telephone or radio
Environmental concerns, requiring
a knowledge of groundwater conditions have been extensively monitored
using our piezometers and dataloggers.