Rebar Scanner A60+
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Chapter V Detection method of rebar
In actual rebar concrete structure, layout of multiple parallel
rebar (main rebar) plus stirrups (e.g. beam and column etc.) or layout
of grid pattern (e.g. plate and wall etc.) is usually used. What’s more,
buried position of rebar in concrete cannot be determined in advance
usually. Therefore, to improve detection efficiency and accuracy, we
need follow certain principle and summarize a great amount of
experience of actual detection. Finally, we generalize a set of detection
method applicable for rebar.
Step 1 Obtain material
Obtain design & construction material of detected component
and determine the approximate position, direction and diameter of
rebar in detected component. Rebar diameter parameter of instrument
is set as design value. If above material is not obtained, rebar diameter
is set as default. Rebar diameter and covering layer thickness are
detected by means of the functions of Grid scan or Profile scan and
Diameter Test.
Step 2 Determine detection regions
One region on detected component is selected as detection
region according to the demand. Region whose surface is relatively
smooth is selected as much as possible to improve the detection
accuracy.
Step 3 Determine the position of main rebar (or top rebar)
Select one starting point and scan the main rebar or top rebar
along the direction that is vertical to the main rebar (for beam and
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