Shape Optimization and Stability Analysis for Kiewitt Spherical Reticulated Shell of Triangular Pyramid System

Table 2

Eigenvalue buckling loading coefficients of first six order modes.

Rise-span ratio/1	The first six order modes
	1	2	3	4	5	6
1/7	5.018	5.019	5.019	5.022	5.022	5.025
1/6	6.542	6.547	6.547	6.554	6.554	6.560
1/5	8.830	8.833	8.833	8.839	8.839	8.843
1/4	12.273	12.277	12.277	12.282	12.282	12.282
1/3	15.663	15.664	15.644	15.665	15.665	15.665