AS 3996-1992

1 - AS 3996:1992 METAL ACCESS COVERS, ROAD GRATES AND FRAMES
4 - PREFACE
4 - CONTENTS
5 - SECTION 1 - SCOPE AND GENERAL
5 - 1.1 SCOPE
5 - 1.2 REFERENCED DOCUMENTS
5 - 1.3 USE OF ALTERNATIVE MATERIALS
5 - 1.3.1 General
6 - 1.3.2 Use of other materials
6 - 1.4 DEFINITIONS
6 - 1.4.1 Administrative definitions
6 - 1.4.2 Technical definitions
6 - 1.5 CLASSIFICATION AND TYPE
6 - 1.5.1 General
7 - 1.5.2 Classification
7 - 1.5.3 Type
7 - 1.5.3.1 Access covers, inspection covers and frames
7 - 1.5.3.2 Road grates and frames
7 - 1.6 MARKING
8 - SECTION 2 - MATERIALS
8 - 2.1 GENERAL
8 - 2.2 IRON CASTINGS
8 - 2.3 FABRICATED MILD STEEL
8 - 2.4 CONCRETE
8 - 2.5 BOLTS
8 - 2.6 PROTECTIVE COATINGS
8 - 2.6.1 Grey iron and ductile iron units
8 - 2.6.2 Fabricated mild steel uni ts
8 - 2.7 FIRE RESISTANCE
9 - SECTION 3 - DESIGN CONSIDERATIONS
9 - 3.1 DESIGN LOADS
9 - 3.2 DESIGN FEATURES
9 - 3.2.2 Access covers, inspection covers and frames
9 - 3.2.2.1 Surface finish
10 - 3.2.2.2 Lifting keyholes
10 - 3.2.2.3 Locking
10 - 3.2.2.4 Recessed covers
11 - 3.2.2.5 Ventilated covers
11 - 3.2.2.6 Watertight covers
11 - 3.2.2.7 Gastight covers
11 - 3.2.3 Road grates
11 - 3.2.3.1 Direction of flow
11 - 3.2.3.2 Bicycle safety
9 - 3.2.1 General
9 - 3.2.1.1 Registers
9 - 3.2.1.2 Dislodgement by traffic
9 - 3.2.1.3 Clearance gaps
9 - 3.2.1.4 Hinged units
9 - 3.2.1.5 Non-rock feature
9 - 3.2.1.6 Design tolerances
11 - 3.3 DIMENSIONS
11 - 3.3.1 Access covers and frames
11 - 3.3.2 Inspection covers and frames
12 - 3.3.3 Road grates and frames
14 - SECTION 4 - COMPLIANCE AND TESTING
14 - 4.1 GENERAL REQUIREMENTS
14 - 4.1.1 Type tests
14 - 4.1.2 Load test procedures
14 - 4.1.3 Proof tests
14 - 4.2 TESTING
14 - 4.2.1 General
14 - 4.2.2 Test specimen
14 - 4.2.3 Test loads
14 - 4.2.4 Recessed covers
14 - 4.2.5 Galvanized units
14 - 4.2.6 Criteria for acceptance
14 - 4.2.6.1 Type load test
14 - 4.2.6.2 Proof load test
14 - 4.2.6.3 Bicycle safety
14 - 4.2.6.4 Watertightness
14 - 4.2.6.5 Gastightness
14 - 4.2.6.6 Production units
16 - APPENDIX A - PURCHASING GUIDELINES
16 - A1 GENERAL
16 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
16 - A3 INFORMATION TO BE SUPPLIED BY THE MANUFACTURER
17 - APPENDIX B - METHODS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
17 - B1 SCOPE
17 - B2 STATISTICAL SAMPLING
17 - B3 PRODUCT CERTIFICATION- STANDARDSMARK
17 - B4 SUPPLIER’S QUALITY SYSTEM
17 - B5 OTHER MEANS OF ASSESSMENT
18 - APPENDIX C - METHODS OF LOAD TESTING FOR COVERS AND GRATES
18 - C1 SCOPE
18 - C2 PRINCIPLE
18 - C3 APPARATUS
18 - C4 PROCEDURE
18 - C4.1 Grey iron covers and grates
18 - C4.1.1 Type load test
18 - C4.1.2 Proof load test
19 - C4.2 Mild steel and ductile iron covers and grates
19 - C4.2.1 Type load test
19 - C4.2.2 Proof load test
20 - C5 REPORT
21 - APPENDIX D - METHOD OF TESTING COVERS AND GRATES FOR BICYCLE SAFETY
21 - D1 SCOPE
21 - D2 PRINCIPLE
21 - D3 APPARATUS
21 - D4 PROCEDURE
21 - D5 REPORT
22 - APPENDIX E - METHOD OF TESTING COVERS FOR WATERTIGHTNESS
22 - E1 SCOPE
22 - E2 PRINCIPLE
22 - E3 APPARATUS
22 - E4 PROCEDURE
22 - E5 REPORT
23 - APPENDIX F - METHOD OF TESTING COVERS FOR GASTIGHTNESS
23 - F1 SCOPE
23 - F2 PRINCIPLE
23 - F3 APPARATUS
23 - F4 PROCEDURE
23 - F5 REPORT

Specifies requirements for access covers, inspection covers, road grates, and frames which are intended for use in drainage structures for the conveyance of sewage and stormwater, and for utilities.

This Standard sets out the requirements for access covers, inspection covers, road grates, and frames which are intended for use in drainage structures for the conveyance of sewage and stormwater, and for utilities.It applies to components manufactured from iron castings and fabricated mild steel.This Standard excludes inspection covers and grates with clear openings of less than 450 mm 450 mm or 450 mm diameter, or greater than 1.3 m 1.3 m or 1.3 m diameter.NOTES:1 Guidelines to purchasers on information needing to be supplied at the time of calling for tenders or quotations are detailed in Appendix A.2 Alternative means for determining compliance with this Standard are given in Appendix B.

First published as AS 3996-1992.