Dimensionless amplitude (zeta/h)
w_1*	w_2*	h/T=1.1		h/T=1.2		h/T=1.3
0.5	0.5	0.4112		0.4046		0.3886
0.5	1	0.3775		0.3603		0.3664
1	1	0.3684		0.3649		0.3473
1	2	0.3762		0.3302		0.3044
0.5	2	0.3627		0.3465		0.3515
2	2	0.3470		0.3420		0.3426

Dimensionless period (UT/h); T obtained from frequency spectra of the resistance time-history
w_1*	w_2*	h/T=1.1		h/T=1.2		h/T=1.3
0.5	0.5	47.0238		49.5250		52.8669
0.5	1	64.6577		66.0400		68.7364
1	1	86.2145		90.0455		95.1655
1	2	54.4486		110.0556	126.8831
0.5	2	94.0476		110.0556	105.7395
2	2	135.4691	145.2733	158.6092