Table 2 The mean μ̄ and the standard deviation σ of the distribution of \(f_{c}\) for the triangular network

\(0.05 < \kappa _{n} < 0.15\)

0.6226

0.0077

\(0.15 < \kappa _{n} < 0.25\)

0.5522

0.0086

\(0.25 < \kappa _{n} < 0.35\)

0.4882

0.0099

\(0.35 < \kappa _{n} < 0.45\)

0.4240

0.0102

\(0.45 < \kappa _{n} < 0.55\)

0.3604

0.0105

\(0.55 < \kappa _{n} < 0.65\)

0.2975

0.0108

\(0.65 < \kappa _{n} < 0.75\)

0.2333

0.0111

\(0.75 < \kappa _{n} < 0.85\)

0.1687

0.0104

\(0.85 < \kappa _{n} < 0.95\)

0.1052

0.0103