Category
Type of structural system
Structural
coefficient
ψ
1.
Steel framed
0.20
2.
RC structures with brick masonry infilling walls not participating in seismic force resistance
| a) |  |
| b) |  |
| c) |  |
Where:
h = column height;
b = the dimension of the cross section of column, parallel to the direction of seismic force.
0.25
0.38
by interpolation
3.
RC framed structures with brick masonry infilling walls participating force resistance.
0.30
4.
Frame-shear wall structures
0.28
5.
Cast-in-place or prefabricated large panel RC structures.
0.30
6.
Brick masonry structures without reinforced columns.
0.45
7.
Brick masonry structures with reinforced columns.
0.38
8.
Tall structures such as chimneys,
mats, towers and others
a) steel
b) reinforced concrete
c) brick masonry
0.30
0.40
0.45
9.
Silos, bunkers, tanks and other
similar structures
a) steel
b) reinforced concrete
0.20
0.25
10.
Bridges and other types of
transportation structures
a) with reinforced concrete understructure
b) with partially or completely concrete understructure
0.20
0.28
11.
Retaining walls:
a) reinforced concrete
b) concrete and stone
0.25
0.28
12.
Underground structures
0.25
13.
Hydrotechnical structures:
a) earth fill dams and rock fill dams
b) concrete and reinforce concrete
0.25
0.35
14.
Other types of hydrotechnical structures
0.35
