AS/NZS 3725:2007

1 - AS/NZS 3725:2007 DESIGN FOR INSTALLATION OF BURIED CONCRETE PIPES
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 APPLICATION
6 - 2.1 General
6 - 2.2 Use of other materials or methods
6 - 2.3 Existing structures
6 - 3 REFERENCED DOCUMENTS
8 - 4 DEFINITIONS
8 - 4.1 Bed zone
8 - 4.2 Bedding
8 - 4.3 Bedding factor (F)
8 - 4.4 Fill
8 - 4.5 Foundation
9 - 4.6 Haunch zones
9 - 4.7 Installation condition
9 - 4.8 Overlay zone
9 - 4.9 Pipe
9 - 4.10 Settlement ratio (rs)
9 - 4.11 Side zones
9 - 4.12 Superimposed load
9 - 4.13 Test loads
9 - 4.14 Working load
13 - 5 NOTATION
15 - 6 VERTICAL LOADS ON PIPES
15 - 6.1 Types of loading
15 - 6.2 Data required
16 - 6.3 Working dead loads due to fill or in situ materials
16 - 6.3.1 General
16 - 6.3.2 Trench condition
16 - 6.3.3 Embankment conditions
24 - 6.4 Working loads due to superimposed dead loads
24 - 6.5 Working loads due to superimposed live loads
24 - 6.5.1 General
24 - 6.5.2 Construction and other equipment loads
24 - 6.5.3 Road vehicle loads
25 - 6.5.4 Railway loads
26 - 6.5.5 Aircraft loads
27 - 7 INTERNAL WATER LOADS
27 - 8 COMPACTION
27 - 9 PIPE SUPPORT AND BEDDING FACTORS
27 - 9.1 General
27 - 9.1.1 Pipe supports
28 - 9.1.2 Bedding factors
28 - 9.2 Support types
28 - 9.2.1 Type U support
29 - 9.2.2 Type H support
29 - 9.2.3 Type HS support
30 - 9.3 Bedding factors for dead loads
30 - 9.3.1 General
30 - 9.3.2 Reduction of bedding factors
31 - 9.3.3 Jacked (thrust) or bored pipes
34 - 10 TEST LOADS
34 - 10.1 General
34 - 10.2 Test loads for steel- or fibre-reinforced pipes not subject to internal pressure
34 - 10.3 Test load for unreinforced pipes not subject to internal pressure
34 - 10.4 Test loads for steel-reinforced pipes subject to internal pressure
35 - APPENDIX A - CONTROLLED LOW STRENGTH MATERIALS-CLSM
35 - A1 GENERAL
35 - A2 MIX PROPORTIONS
36 - A3 MIX FLOWABILITY
36 - A4 SOIL GRADING
36 - A5 HANDLING AND PLACEMENT
37 - APPENDIX B - SUPERIMPOSED LIVE LOADS
37 - B1 GENERAL
37 - B2 CONSTRUCTION LOADS
37 - B3 ROAD VEHICLE LOADS
37 - B3.1 Australian requirements
38 - B3.2 New Zealand requirements
39 - B4 RAILWAY LOADS
39 - B5 AIRCRAFT LOADS

Specifies methods, and provides data, for calculating the vertical working loads on buried concrete pipes due to the materials covering the pipes and superimposed loads, and for relating the minimum proof test load to the calculated vertical working loads on concrete pipes installed under particular conditions, including that of combined vertical load plus internal pressure.

This Standard sets out methods and provides data for the following:(a) Calculating the vertical working loads on buried concrete pipes due to-(i) the materials covering the pipes; and(ii) superimposed loads.(b) Relating the minimum proof test load to the selection of appropriate pipes made in accordance with either AS 4058 or AS 4139, to the calculated vertical working loads on concrete pipes installed under particular conditions, including that of combined vertical load plus internal pressure.In addition, the Standard classifies types of pipe installation and types of bedding and sets minimum requirements for the soil materials around the pipes and compaction of these materials.NOTE: AS/NZS 3724 Supp 1 is a Commentary on this Standard. It provides further information relevant to many Clauses in this Standard. The Supplement, while bound with the Standard, is 'informative' and does not form an integral part of the Standard.

Originated as AS CA33-1962.
Revised and designated AS 3725-1989.
Jointly revised and redesignated AS/NZS 3725:2007