1.0.1 This code is formulated with a view to improving the construction level of reinforced concrete silo works, regulating the quality acceptance of reinforced concrete silo works and achieving advanced technology, reliable quality, safety, usability, economy and rationality.
1.0.2 This code is applicable to the construction and quality acceptance of circular or polygonal cast-in-place reinforced concrete silos storing bulk materials and compressed air mixing silo of mixed powders.
1.0.3 The requirements for construction quality acceptance in the contract agreement document and engineering technical document adopted for the construction of reinforced concrete silo works shall not be less than the requirements of this code.
1.0.4 New technologies, new processes, new equipment and new materials shall be popularized in the construction of reinforced concrete silo works.
1.0.5 The construction of reinforced concrete silo works shall comply with the management provisions of relevant OHS and environmental protection.
1.0.6 This code shall be used together with the current national standard "Unified Standard for Constructional Quality Acceptance of Building Engineering" (GB 50300).
1.0.7 The construction and quality acceptance of reinforced concrete silo works shall not only comply with this code but also comply with those in the relevant current national standards.
1 General Provisions 1
2 Terms 2
3 Basic Requirements 4
4 Foundation Works 6
4.1 General Requirements 6
4.2 The Ground and Pile Foundation Work 6
4.3 Earth and Foundation Pit Works 6
4.4 Reinforcement Works 7
4.5 Formworks 7
4.6 Concrete Works 7
5 Cylinder Structure 9
5.1 General Requirements 9
5.2 Reinforcement Works 10
5.3 Formworks 11
5.4 Concrete Works 12
5.5 Prestressed Works 13
5.6 Liner Works 14
6 Silo-bottom and Internal Structure Works 16
6.1 Silo-bottom Structure & Filling Works 16
6.2 Hopper & Cone Works 16
6.3 Hopper Liner Works 18
7 Silo-top Works 19
7.1 Silo-top Steel Structure Works 19
7.2 Silo-top Concrete Structure Works 20
8 Ancillary Works 22
9 Seasonal Construction 23
9.1 General Requirements 23
9.2 Construction in Winter or Rainy Season 23
10 OHS and Environmental Protection 24
10.1 Occupational Health & Safety 24
10.2 Environmental Protection 25
11 Quality Acceptance 26
11.1 Classification of Quality Acceptance 26
11.2 Acceptance of Project Quality 26
11.3 Inspection and Evaluation of Project Quality 28
Appendix A Testing of Cylinder Structure 31
Appendix B Verticality Test of Cylinder Structure 33
Explanation of Wording in This Code 37
List of Quoted Standards 38
1.0.1 This code is formulated with a view to improving the construction level of reinforced concrete silo works, regulating the quality acceptance of reinforced concrete silo works and achieving advanced technology, reliable quality, safety, usability, economy and rationality.
1.0.2 This code is applicable to the construction and quality acceptance of circular or polygonal cast-in-place reinforced concrete silos storing bulk materials and compressed air mixing silo of mixed powders.
1.0.3 The requirements for construction quality acceptance in the contract agreement document and engineering technical document adopted for the construction of reinforced concrete silo works shall not be less than the requirements of this code.
1.0.4 New technologies, new processes, new equipment and new materials shall be popularized in the construction of reinforced concrete silo works.
1.0.5 The construction of reinforced concrete silo works shall comply with the management provisions of relevant OHS and environmental protection.
1.0.6 This code shall be used together with the current national standard "Unified Standard for Constructional Quality Acceptance of Building Engineering" (GB 50300).
1.0.7 The construction and quality acceptance of reinforced concrete silo works shall not only comply with this code but also comply with those in the relevant current national standards.
Contents of GB 50669-2011
1 General Provisions 1
2 Terms 2
3 Basic Requirements 4
4 Foundation Works 6
4.1 General Requirements 6
4.2 The Ground and Pile Foundation Work 6
4.3 Earth and Foundation Pit Works 6
4.4 Reinforcement Works 7
4.5 Formworks 7
4.6 Concrete Works 7
5 Cylinder Structure 9
5.1 General Requirements 9
5.2 Reinforcement Works 10
5.3 Formworks 11
5.4 Concrete Works 12
5.5 Prestressed Works 13
5.6 Liner Works 14
6 Silo-bottom and Internal Structure Works 16
6.1 Silo-bottom Structure & Filling Works 16
6.2 Hopper & Cone Works 16
6.3 Hopper Liner Works 18
7 Silo-top Works 19
7.1 Silo-top Steel Structure Works 19
7.2 Silo-top Concrete Structure Works 20
8 Ancillary Works 22
9 Seasonal Construction 23
9.1 General Requirements 23
9.2 Construction in Winter or Rainy Season 23
10 OHS and Environmental Protection 24
10.1 Occupational Health & Safety 24
10.2 Environmental Protection 25
11 Quality Acceptance 26
11.1 Classification of Quality Acceptance 26
11.2 Acceptance of Project Quality 26
11.3 Inspection and Evaluation of Project Quality 28
Appendix A Testing of Cylinder Structure 31
Appendix B Verticality Test of Cylinder Structure 33
Explanation of Wording in This Code 37
List of Quoted Standards 38
