To Determine The Orientation Of A Reinforcement Bar; Practice - Elcometer Protovale 331 Operating Instructions Manual

5.4 To determine the orientation of a reinforcement bar

1. Locate the position of the reinforcement bar - see "To locate a single layer
of reinforcement bars" on page 16.
2. Hold the search head over the bar. Move the search head side-to-side and
rotate the head clockwise/anti-clockwise until the signal is at a maximum
(Figure 11).
When the signal is at its maximum, the search head is aligned parallel with
the reinforcement bar.
Figure 11. Determining orientation of a reinforcement bar

5.5 Practice

Because your Covermeter is unaffected by the nature of the material covering
the reinforcing bars, the easiest way to practice location and orientation
technique is to use uncovered bars which you can see. A block of wood or
plastic 20 mm to 45 mm thick can be held between the search head and the
bars to simulate the depth of concrete cover.
Start from the simplest situation, a single straight bar, and progress through
parallel bars, lapped bars, and crossing bars. As you develop skill and
confidence with uncovered bars, move on to locating bars in more realistic
situations.
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OCATING REINFORCEMENT BARS
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