This Part of SS 78 B series standards gives recommendations on methods and devices which can be used to determine strain in concrete. Some devices measure a property directly related to strain in the gauge (e.g. electrical resistance gauges) whereas others actually measure displacement, which can be used to determine strain using a known base length (e.g. displacement transducers). References to strain gauges in this Part include both types of device.
The use of the following devices is described:
(a) Mechanical (including mechanical/optical);
(b) Electrical resistance (metal and alloy elements);
(c) Vibrating wire (acoustic);
(d) Electrical displacement transducers.
SS 78 Pt.B6-1992 history
1992SS 78 Pt.B6-1992 Testing Concrete Part B6 : Recommendations For Determination Of Strain In Concrete