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TRUM
TRUM Vol 3 Part 5
TRUM
Current
TRUM Volume 3 (Signing and Pavement Marking) – Part 5: Design Guide for Roadside Signs
Department of Transport and Main Roads · November 2018
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Pages
72
Sections
122
Searchable sentences
729
Status
Current
Contents
Copyright
p. 2
Licence
p. 2
CC BY licence summary statement
p. 2
Translating and interpreting assistance
p. 2
Disclaimer
p. 2
Feedback
p. 2
1
Scope and introduction
p. 7
1.1
Scope
p. 7
1.2
Application
p. 7
1.3
Objective
p. 7
1.4
Introduction
p. 7
1.5
Referenced documents
p. 7
1.6
Definitions
p. 7
2
Design wind pressure
p. 8
2.1
General
p. 8
2.2
Safe failure mode
p. 8
2.3
Importance Level
p. 8
2.4
Pressure reduction factor
p. 8
2.5
Regions
p. 8
2.6
Terrain Category
p. 8
2.7
Gantries and cantilevers
p. 8
2.8
Special locations
p. 9
2.9
Selection of region and exposure
p. 9
2.10
Additional information
p. 9
3
Clear zone criteria
p. 11
3.1
General
p. 11
4
Sign face construction
p. 12
4.1
Sign face materials
p. 12
4.2
Sign face construction
p. 12
4.2.1
Construction types
p. 12
4.2.2
Standard construction
p. 13
4.2.3
Plank board construction
p. 13
Advantages
p. 14
Disadvantages
p. 15
4.2.4
Modular construction
p. 15
Advantages
p. 18
Disadvantages
p. 18
4.2.5
Dovetail construction
p. 18
5
Sign supports
p. 22
5.1
Post size and selection
p. 22
5.2
Single post signs
p. 22
5.2.1
Signs up to 950mm wide
p. 22
5.2.2
Sign posts
p. 22
5.2.3
Fittings
p. 23
5.2.4
Signs over 950mm wide
p. 23
5.2.5
Posts in sleeves
p. 23
5.3
Multiple support signs
p. 23
5.3.1
Panel stiffener rails
p. 24
5.3.2
Sign supports
p. 24
5.3.3
Alternative post section sizes
p. 25
5.3.4
Breakaway supports
p. 25
5.4
Fittings
p. 27
5.4.1
Connection straps
p. 27
5.4.2
Erection cleats
p. 27
5.5
Proprietary sign supports
p. 27
5.6
Sight boards and other signs at T-intersections
p. 27
6
Storage and handling of signs
p. 28
6.1
General
p. 28
6.2
General storage
p. 28
6.3
Indoor storage
p. 28
6.4
Outdoor storage
p. 28
6.5
Sign transport
p. 28
6.6
Sign erection
p. 28
6.7
Sign covering
p. 29
6.8
Sign cleaning
p. 29
Appendix A
TraSiS
p. 31
Appendix B
Design procedure for roadside sign support
p. 32
Step 1
p. 32
Step 2
p. 32
Step 3
p. 32
Step 4
p. 32
Step 5
p. 32
Step 6
p. 33
Step 7
p. 33
Sample calculation
p. 35
Step 1
p. 35
Step 2
p. 35
Step 3
p. 35
Step 4
p. 35
Step 5
p. 35
Step 6
p. 36
Step 7
p. 36
Appendix C
Standard Drawings
p. 62
Appendix D
Development of the 2018 Design Guide
p. 63
D1
Background
p. 63
D2
Design wind pressure
p. 63
D2.1
Previous Guide
p. 63
D2.2
2018 Design Guide
p. 64
Safe failure mode
p. 64
Importance level
p. 64
Pressure reduction factor
p. 64
D3
p. 65
Design method
p. 65
D3.1
Stiffener arrangement
p. 65
D3.2
Post size and selection
p. 65
D4
Drawings
p. 65
D5
AS4100 Steel Structures Code
p. 66
D6
Breakaway posts
p. 66
D6.1
Risk
p. 66
D6.2
Frangible posts
p. 66
D6.3
Criteria
p. 66
D6.4
Post type
p. 66
D6.5
Details
p. 67
D6.5.1
Slip base
p. 67
D6.5.2
Fuse plate hinge
p. 67
D7
Posts types
p. 68
D8
Stiffener rails
p. 68
D9
Single post signs
p. 68
D10
Footings
p. 68
D10.1
Design strategy
p. 68
D10.1.1
Cohesive soils
p. 69
D10.1.2
Non-cohesive soils
p. 69
D10.1.3
Other soils
p. 69
D10.1.4
Details
p. 69
D11
Modular sign panels
p. 69
Appendix E
Design of sight boards and other signs at T-intersections
p. 70
E1
Background
p. 70
E2
Risk characteristic
p. 70
E3
Sign design for sight boards and other signs to prevent sign spearing
p. 70
E4
Guidelines to the installation of new sightboards
p. 70
E4.1
Provision to install a sign board
p. 70
E4.2
Treatment type selection
p. 71
