AS 4744.1-2000

1 - AS 4744.1-2000 STEEL SHORING AND TRENCH LINING EQUIPMENT - DESIGN
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 APPLICATION
7 - 1.3 GENERAL
7 - 1.4 NEW DESIGNS AND INNOVATIONS
7 - 1.5 REFERENCED DOCUMENTS
8 - 1.6 NOTATION
9 - 1.7 DEFINITIONS
9 - 1.7.1 Characteristic system resistance (Rk)
9 - 1.7.2 Connecting point
9 - 1.7.3 Connector
9 - 1.7.4 Cutting edge
9 - 1.7.5 Dig and push
9 - 1.7.6 Extraction point
9 - 1.7.7 Handling point
9 - 1.7.8 Internal trench lining width (bc)
9 - 1.7.9 Lifting point
9 - 1.7.10 Lower module
9 - 1.7.11 Panel connector
9 - 1.7.12 Post
9 - 1.7.13 Pre- driven
10 - 1.7.14 Professional engineer
10 - 1.7.15 Pulling point
10 - 1.7.16 Strut working length
10 - 1.7.17 Racking
10 - 1.7.18 Slide rail
10 - 1.7.19 Strut
10 - 1.7.20 Trench lining systems
10 - 1.7.21 Trench width (b)
10 - 1.7.22 Bottom- strut clearance (hC)
10 - 1.7.23 Upper module
10 - 1.7.24 Panel
11 - SECTION 2 SYSTEM AND COMPONENTS - DESCRIPTION AND EXAMPLES
11 - 2.1 COMMON TRENCH LINING SYSTEMS
11 - 2.1.1 General
11 - 2.1.2 Trench boxes
12 - 2.1.3 Slide rail trench lining systems
14 - 2.1.4 Drag box
14 - 2.2 SUPPORTING COMPONENTS
14 - 2.2.1 Strut
15 - 2.2.2 Extension units
16 - 2.2.3 Post
16 - 2.2.4 Slide rail
16 - 2.3 STRUT TO PANEL/ SLIDE RAIL CONNECTION
16 - 2.3.1 Articulated connection
16 - 2.3.2 Clearance only connection
17 - 2.3.3 Fully restrained connection
17 - 2.4 PANEL TO PANEL CONNECTIONS
17 - 2.4.1 Separate panel connector with pin
18 - 2.4.2 Integral panel connector with bolt
19 - SECTION 3 DESIGNATION
19 - 3.1 PANEL DESIGNATION
19 - 3.2 STRUT DESIGNATION
19 - 3.3 SLIDE RAIL DESIGNATION
20 - SECTION 4 MATERIALS
21 - SECTION 5 DESIGN REQUIREMENTS
21 - 5.1 GENERAL REQUIREMENTS
22 - 5.2 MINIMUM RATED SYSTEM CAPACITY
22 - 5.3 MAXIMUM ELASTIC DEFLECTION
22 - 5.4 ATTACHMENT POINTS
22 - 5.4.1 Extraction points
22 - 5.4.2 Handling points
23 - 5.4.3 Slide rails
23 - 5.4.4 Lifting point angle
23 - 5.4.5 Extraction, connecting and pulling point design criteria
23 - 5.4.6 Drag box pulling point design critera
23 - 5.4.7 Handling point design criteria
23 - 5.4.8 Location of handling points
23 - 5.5 STRUTS
23 - 5.5.1 General
23 - 5.5.2 Minimum strut partial safety factor for action
23 - 5.5.3 Maximum strut working length
24 - 5.5.4 Type (i) struts
26 - 5.5.5 Strut connection
26 - 5.5.6 Strut component connection
26 - 5.5.7 Drag box leading strut
26 - 5.6 STRUT TO PANEL OR SLIDE RAIL CONNECTION
26 - 5.6.1 Vertical strut to panel rotation
26 - 5.6.2 Horizontal strut to panel rotation
26 - 5.6.3 Drag box connections
26 - 5.6.4 Strut to panel/ slide rail connections
27 - SECTION 6 INSTRUCTION MANUAL
27 - 6.1 GENERAL REQUIREMENTS
27 - 6.2 PRINCIPAL CONTENTS
28 - SECTION 7 MARKING
29 - SECTION 8 EVALUATION OF CONFORMITY
29 - 8.1 DECLARATION
29 - 8.2 PROVISION OF SPECIFICATIONS
30 - APPENDIX A - PARTIAL SAFETY FACTORS
31 - APPENDIX B - RELATIONSHIP BETWEEN LOADS AND RESISTANCE
32 - APPENDIX C - DETERMINATION OF EARTH PRESSURES AND STRUT LOADS USING EMPIRICAL PRESSURE ENVELOPES
34 - APPENDIX D - TYPICAL GROUND PARAMETERS
35 - APPENDIX E - ADDITIONAL LOADS
35 - E1 IMPOSED LOADS IMPARTED ON TRENCH SHORING DURING CONSTRUCTION
35 - E2 CONSTRUCTION PLANT
35 - E3 SOIL HEAPS
35 - E4 ADJACENT STRUCTURES
35 - E5 LATERAL PRESSURE ON THE SHORING DUE TO LOADS OTHER THAN UNIFORM SURCHARGE

Specifies requirements for the design of steel shoring and trench lining equipment. It does not cover selection or maintenance of trench lining equipment.

This Standard specifies the requirements for steel shoring and trench lining systems assembled completely from prefabricated components. It includes requirements for the design, construction and intended use of such systems.

First published as AS 4744.1-2000.