Table 3   Structural Response Factor Rf

Description Rf Kd

Bearing Wall System

 Light framed walls with shear panels
Reinforced concrete shear walls
Reinforced masonry shear walls
Concentrically - braced frames
Unreinforced masonry shear walls		 6.0
4.5
4.0
4.0
1.5		 4.0
4.0
3.0
3.5
1.25
Building Frame System Eccentrically - braced steel frames
Light - framed walls with shear panels
Concentrically - braced frames
Reinforced concrete shear walls
Reinforced masonry shear walls
Unreinforced masonry shear walls		 7.0
7.0
5.0
6.0
5.0
1.5		 4.0
4.5
4.5
5.0
4.0
1.5
Moment Resisting
Frame System		 Special moment resisting frames of steel
Special moment resisting frames of reinforced concrete
Intermediate moment resisting frames of steel
Intermediate moment resisting frames of steel
Ordinary moment resisting frames of steel
Ordinary moment resisting frames of reinforced concrete		 8.0
8.0
6.5
6.0
4.5
4.0		 5.5
5.5
4.5
3.5
4.0
2.0
Dual System
(a) with a special moment
     resisting frame

(b) with an intermediate
     moment resisting frame of
     reinforced concrete or an
     ordinary moment resisting
     frame of steel
Eccentrically - braced steel frames
Concentrically - braced frames
Reinforced concrete shear walls
Reinforced masonry shear walls
Concentrically - braced frames
Reinforced concrete shear walls
Reinforced masonry shear walls
8.0
6.5
8.0
6.5
5.5
6.0
5.5
4.0
5.0
6.5
5.5
4.5
5.0
4.5