02-20-2015, 08:27 AM
[/b] Permissible Settlement or Allowable Bearing Capacity
No structural damage to interior finish or partition walls etc. occurrs in buildings investigated at angular distortion smaller than 1:300. For any given structure there is certain amount of settlement either uniform or differential or both which can be tolerated without creating unsafe conditions. This is termed as permissible settlement.
OR
[b]Safe Bearing Capacity of Soils
The maximum intensity of loading that the soil will safely carry without risk of shear failure is called safe bearing capacity of soil. This is obtained by dividing the ultimate bearing capacity by a certain factor of safety, and it is the value which is used in the design of foundation. The factor of safety normally varies from 2 to 3.
Allowable bearing capacity is the ultimate bearing capacity divided by a factor of safety.
This value varies from 50 mm to 100 mm for different type of structures, foundations (isolated or raft) in different types of soils.
No structural damage to interior finish or partition walls etc. occurrs in buildings investigated at angular distortion smaller than 1:300. For any given structure there is certain amount of settlement either uniform or differential or both which can be tolerated without creating unsafe conditions. This is termed as permissible settlement.
OR
[b]Safe Bearing Capacity of Soils
The maximum intensity of loading that the soil will safely carry without risk of shear failure is called safe bearing capacity of soil. This is obtained by dividing the ultimate bearing capacity by a certain factor of safety, and it is the value which is used in the design of foundation. The factor of safety normally varies from 2 to 3.
Allowable bearing capacity is the ultimate bearing capacity divided by a factor of safety.
This value varies from 50 mm to 100 mm for different type of structures, foundations (isolated or raft) in different types of soils.