Installation of VWP Spot-Weldable Strain Gauge
1
Prepare surface: Remove rust with sander. If necessary, create a
flat surface with grinder. Check that surface is clean.
2
Weld gauge to surface, as shown in drawing. Hold insulating card
between welding tip and tube to prevent welding damage.
3
Apply corrosion protection to gauge (3M Scotch Kote).
4
Mount strain gauge sensor on top of strain gauge. If the gauge is
on rebar, use plastic tie-wraps to secure sensor. Then wrap mastic
pad around sensor and gauge. Finally, wrap self-vulcanizing tape
over the entire assembly.
If gauge is on beam, place tie-down straps over sensor and weld
to beam. Do not allow contact between welder tip and sensor.
Weld protective cover over installation. Fit mastic pad over pro-
tective cover and exit point of cable.
Strain Gauges
Start Welds in Center, Work Toward End.
Place Insulating Card Between Tube and
Welder Tip to Protect Tube.
3rd Row
2nd Row
1st Row
.05"
(3 Rows Per Side)
0.1"
V WGA U GE .c dr
Note: Spot Weld as Close
to Ends as Possible.
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and support,
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shoring,
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Rembco techniques apply when adding new structures: especially
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micropile
installations for foundation support. Our specialties are
soil nails,
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soil nailing.
