1 - AS 4440-2004 INSTALLATION OF NAILPLATED TIMBER ROOF TRUSSES -
4 - PREFACE
5 - CONTENTS
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 APPLICATION
8 - 1.3 REFERENCED DOCUMENTS
8 - 1.4 USE OF ALTERNATIVE MATERIALS OR METHODS
8 - 1.5 DEFINITIONS
8 - 1.5.1 Approved
8 - 1.5.2 Approved specification
8 - 1.5.3 Boxed eaves
8 - 1.5.4 Camber
9 - 1.5.5 Eaves
9 - 1.5.6 Gable-end truss
9 - 1.5.7 Galvanized steel
9 - 1.5.8 Girder truss
9 - 1.5.9 Nailplates
9 - 1.5.10 Truss overhang
9 - 1.5.11 Pitching point
9 - 1.5.12 Raking eaves
9 - 1.5.13 Raking truss
9 - 1.5.14 Regulatory authority
9 - 1.5.15 Reinforced-head nails
9 - 1.5.16 Spacing
9 - 1.5.17 Truss span
9 - 1.5.18 Station
10 - 1.5.19 Steelbrace
10 - 1.5.20 Structural fascia
10 - 1.5.21 Timber truss
10 - 1.5.22 Truss engineer
10 - 1.5.23 Valley (saddle) truss
10 - 1.5.24 Verge overhang
10 - 1.5.25 Waling plate
13 - 1.6 LOADS
13 - 1.7 DOCUMENTATION AT APPROVAL STAGE AND DELIVERY
13 - 1.8 NAILS
14 - SECTION 2 SUPPORTING STRUCTURES
14 - 2.1 GENERAL
14 - 2.2 WALLS
14 - 2.2.1 Loadbearing walls
14 - 2.2.2 Non-loadbearing walls
15 - 2.2.3 Fixing to top plates of non-loadbearing walls
17 - SECTION 3 TRUSS INSTALLATION
17 - 3.1 TRUSS LAYOUT
17 - 3.2 STABILITY DURING INSTALLATION
17 - 3.3 TEMPORARY BRACING
18 - 3.4 INSTALLATION TOLERANCES
18 - 3.4.1 General
18 - 3.4.2 Bow
18 - 3.4.3 Plumb
19 - 3.4.4 Spacing
19 - 3.5 PLASTERBOARD FIXED DIRECTLY TO BOTTOM CHORDS
19 - 3.6 INTERMEDIATE CEILING JOISTS
19 - 3.7 TIE-DOWN REQUIREMENTS
19 - 3.8 MULTIPLE (MULTI-PLY) TRUSS
19 - 3.9 TRUSS MODIFICATION
20 - 3.10 REJECTION CRITERIA
20 - 3.11 TRANSPORT, STORAGE, LIFTING AND HANDLING
21 - SECTION 4 ROOF BRACING
21 - 4.1 GENERAL
21 - 4.2 ROOF BATTENS
21 - 4.2.1 General
22 - 4.2.2 Intermediate and internal top chord ties
24 - 4.3 TOP CHORD BRACING
24 - 4.3.1 General
24 - 4.3.2 Steelbrace
24 - 4.3.3 Steelbrace for gable roof
31 - 4.3.4 Steelbrace for hip roof
33 - 4.3.5 Steelbrace for dual-pitched roof
34 - 4.3.6 Steelbrace for bell roof
34 - 4.3.7 Steelbrace for mono-pitched roof
35 - 4.3.8 Fixing
39 - 4.4 BOTTOM CHORD BRACING
39 - 4.4.1 General
39 - 4.4.2 Bottom chord lateral restraints
40 - 4.5 WEB BRACING
41 - SECTION 5 TRUSS CONNECTION
41 - 5.1 GENERAL
41 - 5.2 HIP ENDS
41 - 5.2.1 Hip-end connection for low wind area (wind classification N1, N2, N3, OR C1)
44 - 5.2.2 Hip-end connection for high wind area (wind classification N4, C2 or C3)
47 - 5.3 GIRDER TRUSSES
47 - 5.3.1 Girder brackets (truss boots)
48 - 5.3.2 Waling plates for Dutch-hip girder
49 - 5.4 VALLEY (SADDLE) TRUSSES
49 - 5.4.1 Valley truss connection for wind classification N1, N2, N3 or C1
50 - 5.4.2 Valley truss connection for wind classification N4, C2, OR C3
51 - SECTION 6 TRUSS OVERHANGS
51 - 6.1 STANDARD TRUSS-OVERHANGS
51 - 6.1.1 General
51 - 6.1.2 Raking eaves in hip corner
51 - 6.1.3 Boxed eaves
52 - 6.2 GABLE VERGE
52 - 6.2.1 Gable-end truss
53 - 6.2.2 Verge overhang
55 - 6.3 BOXED GABLE ENDS
55 - 6.4 VERANDAHS
55 - 6.5 PERGOLAS
56 - APPENDIX A - DOCUMENTATION AT APPROVAL STAGE AND ON DELIVERY
56 - A1 INTRODUCTION
56 - A2 APPROVAL STAGE
56 - A3 DELIVERY
56 - A4 CHECK LIST
58 - APPENDIX B - RECOMMENDED PRACTICE FOR TRUSS INSTALLATION
58 - B1 INTRODUCTION
58 - B2 CAMBERS
58 - B3 FIXING OF CORNICE
58 - B4 BEARING WIDTH
59 - APPENDIX C - RECOMMENDATIONS FOR TEMPORARY BRACING
59 - C1 GENERAL
60 - C2 HIP OR DUTCH-HIP END ROOF
60 - C3 GABLE-END ROOF
62 - APPENDIX D - INTERMEDIATE CEILING JOISTS AND HANGERS
62 - D1 GENERAL
62 - D2 SIZE
62 - D3 CONNECTION
63 - APPENDIX E - TRANSPORT, STORAGE, LIFTING AND HANDLING OF TRUSSES
63 - E1 GENERAL
63 - E2 TRANSPORT
63 - E3 STORAGE
63 - E4 LIFTING AND HANDLING
65 - APPENDIX F - TYPICAL SPECIFICATION FOR, AND EXAMPLE OF, A STEELBRACE
66 - APPENDIX G - FIXING DETAILS FOR TYPICAL GIRDER BRACKETS (TRUSS BOOTS)