Mode Evaluation and Structure Design of Connection between Pole and Base of Roadside Breakaway Sign in China

Table 2

The value of RI.

	1	2	3	4	5	6	7	8	9	10	11
RI	0	0	0.58	0.90	1.12	1.24	1.32	1.41	1.45	1.49	1.51