Dynamic Risk Analysis in Metro Construction Using Statistical Process Control

Table 3

PCI and corresponding FP of different control ranges.

Control range	−2 mm∼2 mm	−5 mm∼5 mm	−8 mm∼8 mm	−10 mm∼10 mm	−15 mm∼15 mm
PCI	0.795	2.304	3.814	4.820	7.336
FP	0.87%	0	0	0	0