Table 3 Soil Types
|
Soil Type |
Description |
|
Ⅰ |
a)
Igneous rocks (Coarse and fine grained texture), hard and stiff
sedimentary rocks and massive metamorphic rocks (Gneisses - crystalline sillicate rocks). b) Conglomerate beds, compact sand and gravel and stiff clay (Argillite) beds up to 60 meters from the bed rock. |
| Ⅱ | a)
Loose igneous rocks (such as tuff), friable sedimentary rocks, foliated
metamorphic rocks and the rocks which have been loosened by weathering. b) Conglomerate beds, compact sand and gravel and stiff clay (Argillite) beds where the soil thickness exceeds 60 meters from the bed rock. |
| Ⅲ | a)
Rocks which have been disintegrated by weathering. b) Beds of gravel and sand with weak cementation and/or uncemented, unindurated clay (clay stone) where the soil thickness is less than 10 meters from the bed rock. |
| Ⅳ | a)
Soft and wet deposits resulted from high level of water table. b) Gravel and sand beds with weak cementation and/or uncemented, unindurated clay (clay stone) where the soil thickness exceeds 10 meters from the bed rock. |
If there is doubt as to the conformity of the soil at
construction site with the specifications of any of the soil types
in the above Table, the type chosen shall be the one that offers a greater
response coefficient.