NZS 3109:1997
Concrete construction
This standard sets out recognised practice for concrete work in New Zealand construction. Its content includes reinforcement installation, formwork, embedded items, and the placing, finishing and curing of the concrete. It provides minimum requirements for the construction of reinforced concrete, unreinforced concrete, prestressed concrete or a combination, in elements of any building or civil engineering structure. Concrete placers, reinforcing steel fixers, and builders, designers and engineers who work with concrete structures will find this useful.
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CONCRETE CONSTRUCTION - TITLE PAGE
CONTENTS
COMMITTEE REPRESENTATION
COPYRIGHT
RELATED DOCUMENTS
FOREWORD
1 GENERAL REQUIREMENTS
1.1 Scope and application
1.2 Interpretation
1.3 Construction review
2 DEFINITIONS
3 REINFORCEMENT
3.1 Notation
3.2 Steel reinforcement
3.3 Hooks and bends
3.4 Surface condition of reinforcement
3.5 Supporting and fixing of reinforcement
3.6 Spacing of reinforcement
3.7 Splices in reinforcement
3.8 Cover
3.9 Tolerances for reinforcement
3.10 Fibre reinforcement
4 PRESTRESSING MATERIALS
4.1 Care of materials
4.2 Test certificates
4.3 Material specifications
4.4 Cleaning and cutting of tendons and welding near tendons
4.5 Positioning of tendons and ducts
5 FORMWORK, EMBEDDED ITEMS AND CONSTRUCTION JOINTS
5.1 Design of formwork
5.2 Surface finish
5.3 Tolerances
5.4 Removal of forms and shores
5.5 Embedded sleeves, conduits and pipes
5.6 Construction joints
6 SUPPLY OF CONCRETE
6.1 Materials and limitations
6.2 Specification and manufacture of concrete
6.3 Concrete mixes
7 CONCRETE PLACING, FINISHING AND CURING
7.1 Performance requirements
7.2 Unfavourable conditions
7.3 Preparation for concreting
7.4 Handling and placing
7.5 Concrete placing under water
7.6 Compaction
7.7 Finishing (including finishes)
7.8 Curing and protection
8 PRESTRESSING: STRESSING AND GROUTING
8.1 Concrete strength at transfer
8.2 Stressing equipment
8.3 Stressing procedure
8.4 Method of measurement
8.5 Multi‑tendon stressing
8.6 Deflected tendons in pre‑tensioned members
8.7 Transfer of prestress in pre‑tensioning
8.8 Grouting of bonded post‑tensioned tendons
8.9 Completion of all post‑tensioning
8.10 Safety precautions
9 CONCRETE ASSESSMENT
9.1 Production assessment and control
9.2 Project assessment
9.3 Project sampling
9.4 Strength and special parameters
9.5 Concrete liable for rejection
Table
Table 3.1 – Minimum radii of reinforcement bends
Table 5.1 – Tolerance for precast components
Table 5.2 – Tolerances for in situ construction
Table 5.3 – Minimum formwork stripping times – in situ concrete
Table 9.1 – Tolerances for nominated slump
Figure
Figure 3.1 – Standard bend, hook and stirrup
Figure 5.1 – Tolerances in linear dimensions
Figure 5.2 – Tolerances in angular dimensions
Figure 5.3 – Tolerances in profile
Figure 8.1 – Elongation correction
- B1
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References
Specification for concrete production - ordinary grade
Related Information
Building Code Compliance Document B1
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS3
Citation context:Refers to 3109:1997(NZS)A1.
Building Code Compliance Document SH
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS1
Citation context:Building Code Compliance Document SH
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS1
Citation context:Refers to 3109:1997(NZS)A2.
Building Code Compliance Document B1
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS3
Citation context:Building Code Compliance Document SH
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS1
Citation context:Refers to 3109:1997(NZS)A1.
Building Code Compliance Document B1
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS3
Citation context:Refers to 3109:1997(NZS)A2.
Safe work with precast concrete
Ministry: WorkSafe New Zealand
Section: 8.7
Citation context:Table 5.1 in NZS 3109 (Concrete Construction) gives tolerances for precast concrete elements.
National Code of Practice for Utility Operators’ Access to Transport Corridors
Ministry: Treasury
Section: Schedule D
Citation context:New Zealand Standards: ...NZS 3109:1997 Concrete construction...
National Code of Practice for Utility Operators’ Access to Transport Corridors
Ministry: Treasury
Section: Schedule D
Citation context:Refers to 3109:1997(NZS)A2. New Zealand Standards: ...NZS 3109:1997 Concrete construction...
Guide to tolerances, materials and workmanship in new residential construction 2015
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: 2. Flooring
Citation context:Deviations in the floor plane are within the applicable tolerances set in NZS 3109:1997: Concrete Construction.
National Code of Practice for Utility Operators’ Access to Transport Corridors
Ministry: Treasury
Section: 5.5.4
Citation context:4. When reinstating excavated concrete layers in the Carriageway, the Utility Operator must ensure that the new concrete:... ...e) is manufactured in accordance with New Zealand Standards NZS 3104: 2003, Specification for concrete production – High grade and special grade or NZS 3109:1997, Concrete construction;
National Code of Practice for Utility Operators’ Access to Transport Corridors
Ministry: Treasury
Section: Schedule D
Citation context:Refers to 3109:1997(NZS)A1. New Zealand Standards: ...NZS 3109:1997 Concrete construction...
National Code of Practice for Utility Operators’ Access to Transport Corridors
Ministry: Treasury
Section: 5.5.4
Citation context:Refers to 3109:1997(NZS)A2. 4. When reinstating excavated concrete layers in the Carriageway, the Utility Operator must ensure that the new concrete:... ...e) is manufactured in accordance with New Zealand Standards NZS 3104: 2003, Specification for concrete production – High grade and special grade or NZS 3109:1997, Concrete construction;
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CONCRETE CONSTRUCTION - TITLE PAGE
CONTENTS
COMMITTEE REPRESENTATION
COPYRIGHT
RELATED DOCUMENTS
FOREWORD
1 GENERAL REQUIREMENTS
1.1 Scope and application
1.2 Interpretation
1.3 Construction review
2 DEFINITIONS
3 REINFORCEMENT
3.1 Notation
3.2 Steel reinforcement
3.3 Hooks and bends
3.4 Surface condition of reinforcement
3.5 Supporting and fixing of reinforcement
3.6 Spacing of reinforcement
3.7 Splices in reinforcement
3.8 Cover
3.9 Tolerances for reinforcement
3.10 Fibre reinforcement
4 PRESTRESSING MATERIALS
4.1 Care of materials
4.2 Test certificates
4.3 Material specifications
4.4 Cleaning and cutting of tendons and welding near tendons
4.5 Positioning of tendons and ducts
5 FORMWORK, EMBEDDED ITEMS AND CONSTRUCTION JOINTS
5.1 Design of formwork
5.2 Surface finish
5.3 Tolerances
5.4 Removal of forms and shores
5.5 Embedded sleeves, conduits and pipes
5.6 Construction joints
6 SUPPLY OF CONCRETE
6.1 Materials and limitations
6.2 Specification and manufacture of concrete
6.3 Concrete mixes
7 CONCRETE PLACING, FINISHING AND CURING
7.1 Performance requirements
7.2 Unfavourable conditions
7.3 Preparation for concreting
7.4 Handling and placing
7.5 Concrete placing under water
7.6 Compaction
7.7 Finishing (including finishes)
7.8 Curing and protection
8 PRESTRESSING: STRESSING AND GROUTING
8.1 Concrete strength at transfer
8.2 Stressing equipment
8.3 Stressing procedure
8.4 Method of measurement
8.5 Multi‑tendon stressing
8.6 Deflected tendons in pre‑tensioned members
8.7 Transfer of prestress in pre‑tensioning
8.8 Grouting of bonded post‑tensioned tendons
8.9 Completion of all post‑tensioning
8.10 Safety precautions
9 CONCRETE ASSESSMENT
9.1 Production assessment and control
9.2 Project assessment
9.3 Project sampling
9.4 Strength and special parameters
9.5 Concrete liable for rejection
Table
Table 3.1 – Minimum radii of reinforcement bends
Table 5.1 – Tolerance for precast components
Table 5.2 – Tolerances for in situ construction
Table 5.3 – Minimum formwork stripping times – in situ concrete
Table 9.1 – Tolerances for nominated slump
Figure
Figure 3.1 – Standard bend, hook and stirrup
Figure 5.1 – Tolerances in linear dimensions
Figure 5.2 – Tolerances in angular dimensions
Figure 5.3 – Tolerances in profile
Figure 8.1 – Elongation correction
- B1
Previous versions
NZS 3109:1997
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.