Pacific Highway Upgrade
Client:
ABI Group Pty Ltd
Date:
01/03/00
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| Instrumentation |
|
19No. Model 1200 VW
Piezometers
8No. Model 4785 Hydrostatic Profilers
5No. Model 4700 Magnetic Extensometers
12No. Model 7040 Inclinometers |
|
 |
|
The
Pacific Highway in northern New South Wales has long been due
an upgrade and realignment. The works were let as a series of
individual contracts. ABI Group were awarded the Yelgun to Chinderah
section and employed Geotechnical Systems Australia to manufacture
and install the instrumentation. ABI Group personnel were trained
for future installations.
The initial instrumentation was used to assess the performance
of the pre-load embankments. This included the use of inclinometers
either side of the embankment, piezometers and magnetic extensometers
installed in drill holes below the embankment and hydrostatic
profile gauges running through the drainage blanket.
Following the initial trial panels, Geotechnical Systems supplied
similar instrumentation for the main pre-load embankments and
extensometers for the tunnel at the northern end of the job. ABI
Group personnel trained by Geotechnical Systems and backed up
by Tech Support from our Melbourne office installed the later
instrumentation. |
The contract
was completed successfully and ABI Group is now operating the monitoring
system.
The initial data from the trial panel was a valuable tool in confirming
the design values and led to refinement of the drainage wick spacing
for the main works.
The use of Geotechnical Systems
to carry out initial installations followed by training of ABI Group
staff proved to be a cost effective method of completing this large
instrumentation contract. |
