標準號：IS 8009 Pt.2-1980
發布日期：1981/10/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This Standard (Part II) provides simple methods for the estimation of elastic compression of the foundation structure, immediate and primary-consolidation settlements of deep foundations under symmetrical static vertical loads. In addition, procedures for computing time rate of settlement are also given.1.2 In this standard, it is presumed that the load on the foundation will be limited to safe hearing capacity and therefore catastropic settlements are not expected. Settlement due to deterioration of foundations, mining and other causes cannot, in the present state of knowledge, be estimated. Even though, it is known that inorganic clays and plastic silts, secondary compres-sion plays an important part, satisfactory theoretical methods are not available. Such methods are not also available for computation of settlement due to the slip of foundation structure with reference to the surrounding soils and creeping of foundation structure and therefore not covered in this code.