Bending Capacity of Concrete-Encased Underground Electrical Duct Banks under Monotonic Loading: An Experimental Study

Table 3

Monitoring system.

Monitoring devices	Monitoring object	Precision
Strain gauges	Length change	≤1.0% FS
Soil pressure cells	Soil pressure in soil stratum	≤1.0% FS
Force sensor	Applied force	≤0.5% FS
Displacement gauges	Displacement of specimens	≤0.5% FS
Conduit diameter-change measuring device	Diameter change	≤0.5% FS