Table 2: Parameters characterizing the un-retrofitted case of study: CBF-5s.

seismic weight - story 1-4	Wi	[kN]	416
seismic weight - story 5	Wtop	[kN]	238
axial force at base columns due to gravity loads	Ncolgravity	[kN]	317
data derived from the step 1 (assessment)
base shear (elastic spectrum)	Vb	[kN]	808
allowable base shear (buckling of base columns)	V*b	[kN]	697
reduction factor	η*	-	0.86
required equivalent viscous damping	ξCBF	[%]	8.43