Structure Type

I

Structures and buildings to be used during or immediately after an earthquake, such as hospitals, fire stations, broadcasting buildings, power stations, post offices

1.5

Buildings and structures of occupancy

1.0

Single-storey factory buildings not containing highly valuable equipment, small workshop buildings and the like

0.5

Buildings and structures, which, if they were to fail, would not involve loss of life or destruction of valuable equipment. Farm buildings and structures not occupied for any length of time. Temporary structures.

0

Classification of Site Condition

S

Rock of any characteristic, either shale-like or crystalline in nature. Such material may he characterized by shear wave velocity greater than 800 meters per second
Stiff soil conditions where the soil depth is less than 75 meters and the soil types overlying rock are stable deposits of sands, gravels, or stiff clays.

1.0

A profile with deep cohesionless or stiff clay conditions, including sites where the soil depth exceeds 75 meters and the soil types overlying rock are stable deposits of sands, gravels, or stiff clays.

 1.25

A profile with soft- to medium-stiff clays and sands characterized by 10 meters or more of soft- to medium-stiff clays with or without intervening layers of sand or other cohesionless soils.

 1.5