Category of ground
Coefficient
Limit values of the coefficient Kd
I
0.33 < Kd <1.0
II
0.47 < Kd <1.0
III
0.60 < Kd <1.0
Table Macedonia 2
|
Zone seismicity on the MCS Scale |
Ks |
|
VII |
0.025 |
|
VIII |
0.050 |
|
IX |
0.100 |
|
Category of ground |
Coefficient |
Limit values of the coefficient Kd |
|
I |
|
0.33 < Kd <1.0 |
|
II |
|
0.47 < Kd <1.0 |
|
III |
|
0.60 < Kd <1.0 |
See Table 4 to determine category to ground.
|
Category |
Characteristic soil profile |
|
I |
Rock or rock-like ground (crystalline rocks, shales, carbonate rock, limestone, marlstone, well-cemented conglomerate and similar, very dense and hard soils, of thickness less than 60.0m, consisting of stable layers of gravel, sand and stiff clay on top of a firm geological formation. |
|
II |
Dense and medium-dense soils, as well as very dense hard soils, with a thickness of over 60.0m, consisting of stable layers of gravel, sand and stiff clay on top of a firm geological formation. |
|
III |
Soils of low density and soft soils, with a thickness of greater than 10.0m consisting of loose gravel, medium-dense sand and clay, with layers of sand or other cohesionless soils or without such layers. |
Construction sites for buildings belonging to Category II or III, whose ground conditions are not known with sufficient certainty, may be classified into ground Category II.