This Part of SS 78 B series standards gives recommendations on and describes the principles of operation of electromagnetic devices that may be used for estimating the position, depth and size of reinforcement buried in concrete. It also describes their methods of use and applications, the accuracy to the expected and the factors which may influence the results.
SS 78 Pt.B4-1992 history
1992SS 78 Pt.B4-1992 Testing Concrete Part B4 : Recommendations On The Use Of Electromagnetic covermeters