NZS 3109:1997

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