Table 1: Parameters characterizing the un-retrofitted case of study: CBF-3s.

seismic weight - story 1-2	Wi	[kN]	416
seismic weight - story 3	Wtop	[kN]	238
axial force at base columns due to gravity loads	Ncolgravity	[kN]	178
data derived from the step 1 (assessment)
base shear (elastic spectrum)	Vb	[kN]	455
allowable base shear (buckling of base columns)	V*b	[kN]	390
reduction factor	η*	-	0.8576
required equivalent viscous damping	ξCBF	[%]	8.6