Table 3: Optimum lamina orientations for second case study material under different loads for constant thickness.

Loading: (KPa m)Optimum lamina orientationsSafety factor
Max. stressPresent work

100/100/0/20 1.27201.0931
100/0/100/20 1.54021.2112
200/100/0/20 1.32001.111
100/100/100/20 1.34011.0376