Using an electromagnetic cover meter the position, depth and size of reinforcement buried in concrete floors can be estimated.
Testing can be carried out in accordance with the recommendations found in BS 1881-204:1988.
Survey testing may be carried out for the following reasons:
The search head is traversed systematically across the concrete and, where reinforcment is located, rotated until a position of maximum disturbance of the electromagnetic field is indicated by the meter. In such a position, under ideal conditions, the indicated cover to the nearest piece of reinforcement may be read if the bar size is known.
Furthermore the axis of the reinforcement will then lie in the plane containing the centreline through the poles of the search head. Please note potential loss of accuracy (which is minimized by an experienced operator) is due to many extraneous factors affecting the magnetic field within the range of the the covermeter and to other physical influences.
Please contact us if you have any questions about our floor testing or design & consultancy services.