Surface Mapping - Elcometer Protovale 331 Operating Instructions Manual

5.6 Surface mapping

When you are locating layers of reinforcement bars it is good practice to 'map'
the concrete surface in a systematic manner. The following steps describe a
mapping technique which can be used to locate two layers of reinforcement
bars at right angles to each other.
1. Hold search head horizontally.
Scan up and down to locate (predominantly) horizontal bars.
2. Hold search head vertically.
Scan from side to side between horizontal bars to locate vertical bars.
Note: In some situations, it will be more appropriate to scan first for the vertical
bars and then the horizontal bars.
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OCATING REINFORCEMENT BARS
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