Timber roof trusses are engineered and manufactured to an exacting standard which require special handling erection and bracing techniques.

Timber roof truss connection details. These details are outlined in the installation guides produced by all nailplate suppliers to be within the tolerances set in as 4440 installation of nailplated timber roof trusses. Spacing up to 900mm or 1200mm for sheet roof up to n3 snow. Also referred to as a ribbon or band board rise vertical distance from bottom most part of the bottom chord to inside of the peak. Section 5 truss connections 5 1 hip ends 5 2 girder 5 3 gable end trusses 5 4 valleys 5 5 overhangs.

For design wind speed up to n2 tile roofs truncated girder with spans up to 8000mm and station up to 2400mm detail c1 may be used. For other applications exceeding these limits refer to connections detailed in. When a truss is designed there are assumptions made including that the truss will be in plane and all in line vertically. Rafters 3 7 1 rafters on floor deck 3 7 2 rafters on dwarf wall 3 8.

Top chord one framing anchor bent to suit with 4 30mm x 2 8ø reinforced head nails into the side of each top chord for truncated girder. 2 trusses are designed to be part of a structural system which includes battens purlins bracing binders fascias and the connection of these components. To ensure that the. Shop drawingdetailed drawings of a roof truss or roof framing showing critical.

Bottom chord three effective flat head 65mm nails through jack truss bottom chord to hip truss bottom chord. Truss perpendicular to separating wall 3 5 4. Scab additional timber connected to a truss to effect a splice extension or general reinforcement. Section 1 scope and general.

Roof panels 3 8 1 roof panel connections 3 9. Truss parallel to separating wall 3 5 3. Final confirmation of details by the fabricator with the builder is recommended prior to manufacture. Detail e2 jack truss to hip truss maximum jack station 2400mm one creeper connector cc200l r with 6 2 8mm x 30mm reinforced head nails into each face creeper connector cc200 jack bc hip bc hip tc jack tc figure 4 typical jack to hip truss connection as specified in as 4440 for n4 c2 and c3 wind classifications tie down at openings.

Trusses including spans pitches profiles quantities and loadings. Load up to 0 2kpa and 3600mm maximum truncated girder station. Creeper or jack truss to hip truss maximum creeper jack station 3000mm top chord fix as detail d1 plus one mitre plate with 6 30mm x 2 8ø reinforced head nails to each top chord. Jack truss to truncated girder truss.

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