Experience has shown that manhole lids have the potential to
‘blow’ when under pressure from sewer stoppages, putting workers at
risk. When manhole lids get stuck, workers have traditionally
resorted to the use of various tools, with the potential to injure
personnel, equipment and assets.
Research, Trials and Operational Activity ‘us’ - Utility
Services trialled a prototype version of Ian Syer’s original gatic
lifter which was light, compact and easy to operate. After several
field tests and modifications we developed the gatic lifter shown
here.
After testing on several gatics we found the equipment easy to
operate, successfully breaking the seal of covers that had become
stuck. Following trials in the field, ‘us’ - Utility Services staff
provided positive feedback.
To test its capacity, we used the gatic lifter to break the seal
on a heavy cover (900mm x 900mm). Experience tells us that lids of
this size would traditionally be difficult to lift and at times
would need to be broken out using other tools, creating a need to
replace the lid.
We believe that the introduction of this machine has delivered
considerable cost savings, where stuck covers would ‘break out’ and
require replacement. The cost of replacing lids can be in excess of
$1,000 in some cases.
Objectives, Methods and Materials ‘us’ - Utility Services saw
the need for a gatic lifter which would enable workers to lift
‘stuck’ lids and allow them to carry out work from a safe distance.
This solution consists of the following: •
Manuallyoperatedpumpandram • 4metresofhydraulichose •
Steel,hydraulicliftpiston
Results and Conclusions We have so far received positive results
in a large variety of situations. There will always be some
examples of gatics stuck permanently in place, needing to be broken
out and replaced however we believe the lifter will provide a great
benefit to ‘us’ in the field, with the potential to reduce risks
for work crews and save thousands in unnecessary gatic cover
replacements.
Manhole Lid (Gatic) LifterCreated and developed by Ian Syer and
Bryan Findley
Giving our clients the edge www.usus.com.au 13 28 1240
Commercial Drive Lynbrook Victoria 3975 Australia
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