Foreword
DECLARATION
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 Timber
4.1.1 Grades
4.1.2 Resawn timber
4.1.3 Finger jointed timber
4.2 Mechanical fasteners
4.3 Timber treatments
4.3.1 Preservation
4.3.2 Flame retardant treatment
4.3.3 Effects of timber treatment
5 Assessment of structural adequacy
6 Design requirements
6.1 Basic requirements
6.2 Requirements for timber members
6.3 Design loading
6.4 Joint loads
6.5 Application of loads
7 Roof truss design
7.1 General
7.2 Generalized analysis
7.3 Single design method
7.3.1 General
7.3.2 Axial force
7.3.3 Bending moments
7.3.4 Member design
7.3.5 Compression members
7.3.6 Load sharing
7.3.7 Multi-ply trusses
7.3.8 Torsion
7.3.9 Joints
7.3.10 Deflection
8 Limitation for roof truss span and sizes
8.1 General
9 Fabrication
9.1 Staff and premises
9.2 Equipment
9.3 Assembly
9.3.1 General
9.3.2 Joints formed with metal plate fasteners
9.4 Marking
10 Information for design and fabrication
10.1 Information required by the truss designer
10.2 Information required by the building designer
10.3 Information required by the trussed fabricator
prior to assembly
10.3.1 Timber
10.3.2 Connection devices
10.3.3 Dimensions
10.3.4 Fixing
10.3.5 Treatment
11 Handling and storage
11.1 General
11.2 Handling
11.3 Storage
11.3.1 General
11.3.2 Vertical storage
11.3.3 Horizontal storage
12 Erection and site work
12.1 Delivery inspection
12.2 Modification and repair
12.3 Erection
12.3.1 General
12.3.2 Vertical measurement
12.3.3 Parallel measurement
12.3.4 Position to end walls
12.3.5 Fixing at points of permanent support
12.3.6 Fixing of girder trusses
12.4 Wall plates
12.4.1 General
12.4.2 Position
12.5 Bracing
12.5.1 General
12.5.2 Minimum bracing requirements
12.5.3 Temporary bracing during erection
12.6 Support of water cistern and fixed plant
12.6.1 General
12.6.2 Minimum support
12.6.3 Multiple cisterns
12.7 Openings at ceiling ties and rafter levels
12.7.1 General
12.7.2 Openings in excess of 600 mm
12.8 Tiling battens
12.8.1 Minimum batten sizes
12.8.2 Batten spacing
12.8.3 Battens used for lateral stability
12.8.4 Batten joints
12.8.5 Batten fixing
12.8.6 Truss alignment
12.9 Gable ladders
12.10 Hip roofs
13 General
13.1 Records
13.2 Future alterations and changes of use
13.3 Chimneys and small windows
13.4 Re-roofing
Annex A (normative) Standard roof bracing
Annex B (informative) Figures 1 to 10-2
Bibliography