User Manual
7
3.02
Installation in Pre-cast blocks
An alternative to fixing to rebar, is to pre-cast the gauge into a block of concrete prior to this being
cast into the main concrete pour. This method takes more time, but does protect the gauges better
during the main pour.
To install in this way, follow the steps below:-
Fabricate a mould for the desired size of block
Mix the concrete, ensuring the mix is the same as that which will be used for the main pour.
Fill the mound and position the gauge in the middle of the fill.
Do not cure for more than 3 days, or less than one day
Place blocks in position in main pour – note comments on cable protection to follow in section
4
TABLE INDICATING SUGGESTED DIMENSIONS FOR SUPPORT BARS
Refer to Figure 1
Gauge Length
'A'
'B'
150 mm
90 mm
8 mm
INFORMATION
If the reinforcement spacing exceeds 3 x “A” then bar size “B” should
be increased.
The gauge positions should be marked, if possible on the reinforcement cages, and the cable route
indicated.
IMPORTANT
the final position of the gauge should be accurately recorded since this
detail will be required for interpretation of its readings.
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