This specification specifies requirements for observation and acceptance of the foundation treatment, foundation construction and foundation settlement. It is applicable to the construction and acceptance of vertical cylindrical steel storage tank subgrade and foundation but not applicable to the construction and acceptance of low temperature and low pressure steel storage tank foundation and steel storage tank foundation whose medium temperature is higher than 95℃.
Foreword III
1 Scope
2 Normative References
3 Subgrade and Foundation Construction
3.1 General Requirements
3.2 Earth Excavation and Backfilling
3.3 Sand (Stone Chip) Cushion
3.4 Bituminous-sand Insulating Layer
3.5 Reinforced Concrete Ring Wall (Ring Beam)
3.6 Apron, Slope protection and Final Encapsulation
4 Foundation Treatment
4.1 Plain Soil Foundation
4.2 Lime Soil Foundation
4.3 Sand and Sandstone Foundation
4.4 Dynamic Consolidation Foundation
4.5 Stone Chip Foundation
4.6 Graded Crushed Stone Foundation
4.7 Sand Pile
4.8 Vibroflotation Foundation
5 Water-filling Preloading Foundation
5.1 General Requirements
5.2 Water-filling Preloading
6 Pile Foundation
6.1 General Requirements
6.2 Reinforced Concrete Driven Pile
6.3 Bored Concrete Pile
6.4 Inspection and Acceptance of Pile Foundation
7 Settlement Observation of Tank Foundation
7.1 General Requirements
7.2 Water-filling Preloading Foundation
7.3 Non-water-filling Preloading Foundation
7.4 Settlement Observation Result
8 Restoration of Tank Foundation
9 Acceptance of Tank Foundation
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Appendix G
Appendix H
Explanation of Wording
