Standard No.:	CECS 180-2005
English Name:	Specification for prestressed construction of building engineering
Chinese Name:	建筑工程预应力施工规程
Chinese Classification:	P25    Concrete structure engineering
Professional Classification:	CECS    Engineering Construction Standard
ICS Classification:	91.080.40 91.080.40    Concrete structures 91.080.40
Issued by:	CECS
Issued on:	2005-4-29
Implemented on:	2005-8-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	20000 words
Price(USD):	140.0
Delivery:	via email in 1 business day

1.0.1 This Specification was formulated for the purpose of achieving advanced technology, economic rationality and safe operation and also guaranteeing quality in the prestressed construction of building engineering. 1.0.2 This Specification is applicable to the prestressed construction of concrete structures and steel structures in buildings and general structures. 1.0.3 The construction of subitem prestressing project shall be undertook by the prestressing professional construction organization having the corresponding qualification grade. 1.0.4 In addition to meeting this Specification, the prestressed construction of building engineering still shall comply with those specified in the current relevant standards of the nation.

1 General Provisions 2 Terms 3 Materials 3.1 Prestressing Tendon 3.2 Prestressing Tendon of Coating 3.3 Anchorage, Grip and Coupler 3.4 Tubes for Hole Manufacturing 3.5 Cement for Grouting 3.6 Shipping and Storage 4 Construction Requirement 4.1 Pre-tensioned Prestressing 4.2 Post-tensioned Bonded Prestressing 4.3 Post-tensioned Unbounded Prestressing 4.4 Measures for Reinforced Structures 4.5 Measures for Reducing Binding Force 4.6 Prestressing of Steel Structure 5 Construction Calculation 5.1 Blanking Length of Prestressing Tendon 5.2 Stretching Force of Prestressing Tendon 5.3 Prestressing Loss 5.4 Partial Load-carrying Capacity of Anchorage Zone 5.5 Stretch Elongation of Prestressing Tendon 6 Fabrication and Installation 6.1 Fabrication of Prestressing Tendon 6.2 Pore Path Setting up of Prestressing Tendon 6.3 Installation of Prestressing Tendon 6.4 Laying of Unbonded Prestressing Tendon 6.5 Quality Requirements 7 Stretching and Spreading 7.1 Preparation Work 7.2 Stretching of Prestressing Tendon 7.3 Spreading of Prestressing Tendon 7.4 Quality Requirements 8 Grouting and Sealing Anchor 8.1 Preparation Work 8.2 Slurrying Requirements 8.3 Grouting Technology 8.4 Vacuum Auxiliary Grouting 8.5 Sealing Protection of Anchorage 8.6 Quality Requirements 9 Construction of External Pre-stressing 9.1 Arrangement of Tendons 9.2 System Constitution 9.3 Construction Requirements 9.4 Construction and Protection 10 Prestressing Construction of Cable 10.1 System Construction 10.2 Fabrication and Installation 10.3 Adjustment of Stretching Force and Cable Tension 10.4 Protection Requirements 10.5 Maintenance and Monitoring 11 Construction Management 11.1 Construction Scheme 11.2 Requirements for Cooperation Procedures 11.3 Safety Measures 11.4 Quality Control 11.5 Quality Acceptance Appendix A Specification and Mechanical Properties of Common Prestressing Tendon Appendix B Specification of Metal Bellows and Plastic Bellows Appendix C Anchoring System of Clips for Common Steel Stranded Wire Appendix D Coordinate Equation and Length Calculation of Curved Prestressing Tendon Appendix E Methods for Fluidity Test of Cement Paste for Grouting Appendix F Quality Inspection Records of Inspection Lot of Subitem Prestressing Project Explanation of Wording in this Specification