Bridge Damage Severity Quantification Using Multipoint Acceleration Measurement and Artificial Neural Networks

Table 2

Mean and standard deviations of thickness reduction at the bridge age of 50 years disaggregated by appearance rating. (As for appearance rating 5, because only one bridge was tested, the standard deviation is not included in the table.)

Appearance; rating	Mean thickness reduction at the bridge age of 50 years	Standard deviation of thickness reduction at the bridge age of 50 years
1	8.27 mm	11.37 mm
2	2.03 mm	2.98 mm
3	0.32 mm	0.14 mm
4	0.20 mm	0.05 mm
5	0.12 mm	N/A