description

S

A soil profile with either:

(a)   A rock-like material characterized by a shear wave velocity greater than 800 meters per second or by other suitable means of classification, or

(b)   Stiff or dense soil condition where the soil depth is less than 60 meters.

1.0

A soil profile with dense or stiff soil conditions, where the soil depth exceeds 60 meters.

1.2

A soil profile with 20 meters or more in depth and containing more than 6 meters of soft to medium-stiff clay but not more than 12 meters of soft clay.

1.5

A soil profile containing more than 12 meters of soft clay

2.0

category

description

A

essential buildings, required to be operative during and after quakes, e.g., hospitals, power stations, fire stations, communication facilities, etc.

1.4

B

public buildings with a large concentration of persons, such as schools

1.2

C

any other buildings than above mentioned ones

1.0