Examination of Structures Built with Tunnel Formwork in Terms of Strength and Cost according to the Earthquake Regulations of 2007 and 2018

Table 2

Periods for structures.

Structure	Mode	BK period (s)			CK period (s)
		TSC-2007	TSCB-2018	Difference (%)	TSC-2007	TSCB-2018	Difference (%)
5	1	0.42	0.44	7.3	0.41	0.43	4.8
10	1	0.71	0.76	7.0	0.77	0.81	5.2
15	1	1.16	1.23	6.1	1.38	1.41	2.1