AS 3798-2007

1 - AS 3798-2007 GUIDELINES ON EARTHWORKS FOR COMMERCIAL AND RESIDENTIAL DEVELOPMENTS
4 - PREFACE
5 - CONTENTS
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 TERMS AND DEFINITIONS
7 - 1.2.1 Cohesionless soil
7 - 1.2.2 Cohesive soil
7 - 1.2.3 Collapsing soil
8 - 1.2.4 Compaction
8 - 1.2.5 Consolidation
8 - 1.2.6 Dispersive soil
8 - 1.2.7 Foundation
8 - 1.2.8 Lot
8 - 1.2.9 Pavement material
8 - 1.2.10 Reactive soil
8 - 1.2.11 Relative compaction
8 - 1.2.12 Rockfill
8 - 1.2.13 Structural fill
8 - 1.2.14 Subgrade
9 - 1.2.15 Topsoil
9 - 1.3 DESIGNATION OF PERSONNEL
10 - SECTION 2 INVESTIGATION, PLANNING AND DESIGN
14 - SECTION 3 DOCUMENTATION
14 - 3.1 GENERAL
14 - 3.2 INVESTIGATION AND PLANNING
14 - 3.3 DESIGN AND SPECIFICATION
15 - 3.4 CONSTRUCTION
16 - 3.5 SITE RECORDS
17 - SECTION 4 MATERIALS
17 - 4.1 GENERAL
17 - 4.2 MATERIALS SOURCED ON SITE
17 - 4.3 UNSUITABLE MATERIALS
18 - 4.4 SUITABLE MATERIALS
19 - SECTION 5 COMPACTION CRITERIA
19 - 5.1 GENERAL
19 - 5.2 COMPACTION OF SOILS
21 - 5.3 PLACEMENT MOISTURE CONTENT
21 - 5.4 COARSE MATERIAL
22 - 5.5 TEST ROLLING
22 - 5.6 OTHER MATERIALS
22 - 5.7 TRENCHES
23 - SECTION 6 CONSTRUCTION
23 - 6.1 SITE PREPARATION
23 - 6.1.1 General
23 - 6.1.2 Fencing
23 - 6.1.3 Drainage, erosion and sedimentation control
23 - 6.1.4 Site clearing
23 - 6.1.5 Stripping
24 - 6.1.6 Slope preparation
24 - 6.1.7 Foundation preparation
24 - 6.1.8 Off-site disposal
25 - 6.2 FILL CONSTRUCTION
25 - 6.2.1 General
25 - 6.2.2 Placing fill
26 - 6.2.3 Fill moisture control
26 - 6.2.4 Fill compaction
26 - 6.2.5 Surface heaving
27 - 6.2.6 Fill adjacent to structures and in trenches
28 - SECTION 7 METHODS OF TESTING
28 - 7.1 GENERAL
28 - 7.2 FIELD DENSITY
28 - 7.3 ESTABLISHMENT OF A REFERENCE DENSITY FOR CALCULATION OF RELATIVE COMPACTION
29 - 7.4 SAMPLE SELECTION FOR REFERENCE DENSITY
29 - 7.5 USE OF DIFFERENT TEST PROCEDURE
29 - 7.6 PERMISSIBLE OVERSIZE
29 - 7.7 PREPARATION OF LABORATORY REFERENCE DENSITY SAMPLES
31 - SECTION 8 INSPECTION AND TESTING
31 - 8.1 GENERAL
31 - 8.2 LEVEL 1 INSPECTION AND TESTING
31 - 8.3 LEVEL 2 SAMPLING AND TESTING
32 - 8.4 GEOTECHNICAL INSPECTION AND TESTING AUTHORITY (GITA)
32 - 8.5 GEOTECHNICAL TESTING AUTHORITY (GTA)
32 - 8.6 STATEMENTS OF COMPLIANCE
32 - 8.7 FREQUENCY OF TESTING
34 - APPENDIX A - REFERENCED DOCUMENTS
36 - APPENDIX B - TYPICAL SITE RECORD SHEETS
42 - APPENDIX C - STATISTICAL METHODS IN EARTHWORKS
42 - C1 GENERAL
43 - C2 SELECTION OF TEST SITES IN A TEST LOT SAMPLING
43 - C3 ACCEPTANCE
43 - C4 OUTLIER RESULTS
44 - APPENDIX D - SUITABILITY OF COMPACTION EQUIPMENT FOR VARIOUS TYPES OF FILL MATERIALS

Provides guidance on the specification, execution, and control testing of earthworks and associated site preparation works for commercial and residential developments; and on the interpretation and application of the relevant test methods specified in the AS1289 series of Standards.

This Standard provides guidance on the specification, execution, and control testing of earthworks and associated site preparation works for commercial and residential developments. This Standard does not in itself constitute a specification for earthworks and the specifier should consider the applicability of these guidelines to the project under consideration.The Standard is not intended to be used for pavements, major roadworks, or water-retaining structures. Such works require special consideration.Residential developments in the context of this Standard are intended to include single lot development up to broad acre subdivisional development for detached or semi-detached housing. The Standard is not intended to be sufficient for medium- or high-density residential development without due consideration by a suitably qualified professional.Historically, previous editions of this Standard have been used to assist in the specification and execution of earthworks beyond the intended scope of the document. Whilst with due consideration some aspects of this Standard may be applicable to such works, designers and specification writers should be aware the guidance given herein may not be applicable. In such circumstances, appropriate advice should be sought from a suitably qualified professional before adopting this Standard.Where the depth of filling required for works to which this Standard would otherwise be applicable exceeds 5 m, advice from a geotechnical professional should be sought.

Originated as AS 3798-1990.
Third edition 2007.
Reissued incorporating Amendment No. 1 (August 2008).