Structural system

Structural material

R

R_o

Space moment-resisting frames

Structural Steel

Reinforced Concrete

7

7

11

11

Shear walls and braced

systems

Structural steel

Reinforced Concrete

Reinforced Concrete and Confined Masonry

-          If criterion A is mete

-       If criterion A is not met

Wood

Confined Masonry

Reinforced Masonry

-          Of concrete blocks or units of similar geometry with full grouting and double-wythe masonry.

-          Of clay bricks with partial or full grouting and concrete blocks or units of similar geometry which have partial grouting.

7

7

6

4

5.5

4

4

 3

11

11

9

4

7

4

4

 3

Any type of structure or material that cannot be classified in one of the above categories.

2

-