Joint or member
Rafter or truss span
mm
Specific fixing requirements Spacing of fixing along plate, mm
600 1 200 1 800
Bottom plates to floor frame or slab
3 000 Nominal fixing Nominal fixing 30 × 0.8 mm G.I. strap 2/30 × 2.8 mm ∅ nails each end or two framing anchors or M10 masonry anchor
6 000 Nominal fixing 30 × 0.8 mm G.I. strap or one framing anchor or M10 masonry anchor
30 × 0.8 mm G.I. strap 3/30 × 2.8 mm ∅ nails each end or two framing anchors or M10 masonry anchor 9 000 30 × 0.8 mm G.I. strap or one framing anchor 30 × 0.8 mm G.I. strap 3/30 × 2.8 mm ∅ nails each end or two framing anchors or M10 masonry anchor
30 × 0.8 mm G.I. strap 4/30 × 2.8 mm ∅ nails each end or M10 masonry anchor
12 000 30 × 0.8 mm G.I. strap or one framing anchor 30 × 0.8 mm G.I. strap 4/30 × 2.8 mm ∅ nails each end or two framing anchors or M10 masonry anchor
30 × 0.8 mm G.I. strap 6/30 × 2.8 mm ∅ nails each end or M10 masonry anchor
Top and bottom plates to studs
3 000 30 × 0.8 mm G.I. strap at 1800 mm max. centres along wall 2/30 × 2.8 mm ∅ nails to each end of strap
6 000 30 × 0.8 mm G.I. strap at 1200 mm max. centres along wall 3/30 × 2.8 mm ∅ nails to each end of strap
9 000 30 × 0.8 mm G.I. strap at 1200 mm max. centres along wall 6/30 × 2.8 mm ∅ nails to each end of strap
12 000 30 × 0.8 mm G.I. strap at 1200 mm max. centres along wall 6/30 × 2.8 mm ∅ nails to each end of strap
(continued)
Joint or member Rafter or Specific fixing requirements Rafters to top plates, beams or studs—Non- coupled roofs— No ridge tie- down but rafters tied at ridge Rafter spacing, mm 600 900 1 200 3 000 (single) 30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection) 6 000
(single)
30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. strap 3/30 × 2.8 mm ∅ nails or two framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. looped strap 4/30 × 2.8 mm ∅ nails each end
(see Figure 9.3(b) or (c) for ridge connection) 3 000
(continuous)
30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. strap 3/30 × 2.8 mm ∅ nails or two framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. looped strap 4/30 × 2.8 mm ∅ nails each end
(see Figure 9.3(b) or (c) for ridge connection) Rafters to top plates, beams or studs—Non- coupled roofs— Ridge tie-down 3 000 (single) 30 × 0.8 mm G.I. strap or one framing anchor
30 × 0.8 mm G.I. strap or one framing anchor
30 × 0.8 mm G.I. strap or one framing anchor 6 000
(single)
30 × 0.8 mm G.I. strap or one framing anchor
30 × 0.8 mm G.I. strap or one framing anchor
30 × 0.8 mm G.I. strap or one framing anchor 3 000
(continuous)
30 × 0.8 mm G.I. strap or one framing anchor
30 × 0.8 mm G.I. strap or one framing anchor
30 × 0.8 mm G.I. strap or one framing anchor Rafters to top plates, beams or studs—Coupled roofs—No ridge tie-down (see Note 4) 3 000 (single) 30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection) 3 000
(continuous)
30 × 0.8 mm G.I. strap or one framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. strap 3/30 × 2.8 mm ∅ nails or two framing anchor (see Figure 9.3(a) or (b) for ridge connection)
30 × 0.8 mm G.I. looped strap 4/30 × 2.8 mm ∅ nails each end
(see Figure 9.3(b) or (c) for ridge connection) Rafters to
underpurlins— coupled roofs
3 000
(continuous) Nominal fixing
30 × 0.8 G.I. strap or one framing anchor
30 × 0.8 G.I. strap or one framing anchor
Roof trusses to top plates, beams or studs
Truss spacing, mm
600 900 1 200
3 000 Nominal fixing Nominal fixing Nominal fixing
6 000 Nominal fixing Nominal fixing 30 × 0.8 mm G.I. strap or one framing anchor 4/30 × 2.8 mm ∅ nails each leg
9 000 Nominal fixing 30 × 0.8 mm G.I. strap or two framing anchors
30 × 0.8 mm G.I. looped strap 4/30 × 2.8mm nails each end or two framing anchors 12 000 30 × 0.8 mm G.I.
strap or one framing anchor
4/30 × 2.8 mm ∅ nails each end
30 × 0.8 mm G.I. looped strap 4/30 × 2.8 mm nails each end or two framing anchors
30 × 0.8 mm G.I. looped strap 4/30 × 2.8 mm nails each end.
(continued)
TABLE 9.6 (continued)
Joint or member Rafter or Specific fixing requirements Intermediate
beams, verandah beams and lintels to posts or studs Beam span, mm 1 800 3 600 6 000 3 000 30 × 0.8 mm G.I. strap 3/30 × 2.8 mm ∅ nails each end
30 × 0.8 mm G.I. strap 4/30 × 2.8 mm ∅ nails each end 30 × 0.8 mm G.I. strap 6/30 × 2.8 mm ∅ nails each end 6 000 30 × 0.8 mm G.I. strap 3/30 × 2.8 mm ∅ nails each end
30 × 0.8 mm G.I. looped strap 6/30 × 2.8 mm ∅ nails each end or 2/M10 bolts
2/30 × 0.8 mm G.I. looped strap 4/30 × 2.8 mm ∅ nails each end or 2/M12 bolts
9 000 30 × 0.8 mm G.I. strap
4/30 × 2.8 mm ∅ nails each end or 2/M10 bolts
2/30 × 0.8 mm G.I. looped strap 4/30 × 2.8 mm ∅ nails each end, or M10 vertical tie- down anchor rod to floor frame or footing or 2/M10 bolts
2/30 × 0.8 mm G.I. looped strap 6/30 × 2.8 mm ∅ nails each end or M10 vertical tie-down anchor rod to floor frame or footing or 2/M12 bolts
12 000 30 × 0.8 mm G.I. strap
6/30 × 2.8 mm ∅ nails each end or 2/M10 bolts
2/30 × 0.8 mm G.I. looped strap 6/30 × 2.8 mm ∅ nails each end or M10 vertical tie- down anchor rod to floor frame or footing or 2/M10 bolts.
M12 vertical tie-down anchor rod to floor frame or footing Roof battens to rafters or trusses Rafter or truss spacing mm
Batten spacing, mm (see Note 3)
600 1 200
600 2/75 × 3.05 mm plain shank nails or 1/75 × 3.05 mm deformed shank nail
2/75 × 3.05 mm deformed shank nails 900 2/75 × 3.05 mm deformed shank nails 2/75 × 3.33 mm deformed shank nails 1 200 2/75 × 3.05 mm deformed shank nails 1/75 × No 14 Type 17 Screw
NOTES:
1 Except for nominal fixings, intermediate connections are not required where a connection is continued to a lower member in the frame; for example, connection of a rafter directly to a stud eliminates the need for individual rafter to top plate and to stud connections.
2 Specific tie-down connections in walls are only required in those walls used for tie-down purposes 3 Unless otherwise specified, the minimum penetration into a rafter or truss is 38 mm.
4 Assumed to be adjoining a ceiling joist.
5 For continuous span beams, the centre support requires twice the fixing specified.