International Journal of Concrete Structures and Materials

Table 2 DDBD parameters calculated for RC frame models.

From: Application of the Direct Displacement Based Design Methodology for Different Types of RC Structural Systems

	4 storey	8 storey	12 storey
Drift limit θ_d	0.025	0.025	0.025
Effective mass m_e (kg)	192,660	375,680	567,920
Effective height H_e (mm)	9,105	17,650	26,320
Design displacement Δ_d (mm)	240	404	525
Equivalent damping $ξ_{eq}$	12.58	12.64	12.2
Effective period T (s)	1.4	2.1	3
Base shear (kN)	914	1,282	1,332

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