A New Statistical Parameter for Determining Joint Roughness Coefficient (JRC) considering the Shear Direction and Contribution of Different Protrusions

Table 4

The WPA values of 10 joint profiles at 5 sampling intervals.

Number of joint profiles	Sampling intervals (mm)
	0.5	1	2	4	10
1	2.35	1.64	1.15	0.75	0.58
2	3.11	2.45	1.39	1.21	0.73
3	3.42	2.87	2.57	1.95	1.42
4	4.35	3.88	2.69	2.05	1.48
5	4.43	4.03	3.75	3.10	2.37
6	4.50	4.26	4.10	3.74	2.63
7	5.18	4.44	3.96	3.50	2.16
8	6.17	5.86	5.72	5.54	5.08
9	7.87	7.58	6.99	6.19	5.54
10	8.47	7.92	6.44	5.49	4.87