Testing concrete - Recommendations for determination of strain in concrete
BS 1881-206 is the 206th part of the series that 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 BS 1881-206 include both types of device. The use of the following devices is described: Mechanical (including mechanical/optical), Electrical resistance (metal and alloy elements), Vibrating wire (acoustic), Electrical displacement transducers
