9.23.3.

Column 1

Column 2

Column 3

Construction Detail

Minimum Length of Nails, mm

Minimum Number or Maximum Spacing of Nails

Floor joist to plate – toe nail

82

2

Wood or metal strapping to underside of floor joists

57

2

Cross bridging to joists

57

2 at each end

Double header or trimmer joists

76

300 mm (o.c.)

Floor joist to stud (balloon construction)

76

2

Ledger strip to wood beam

82

2 per joist

Joist to joist splice (See also Table 9.23.13.8.)

76

2 at each end

Header joist end nailed to joists along perimeter

101

3

Tail joist to adjacent header joist

82

5

(end nailed) around openings

101

3

Each header joist to adjacent trimmer joist

82

5

(end nailed) around openings

101

3

Stud to wall plate (each end) toe nail

62

4

or end nail

82

2

Doubled studs at openings, or studs at walls or wall intersections and corners

76

750 mm (o.c.)

Doubled top wall plates

76

600 mm (o.c.)

Bottom wall plate or sole plate to joists or blocking (exterior walls)⁽¹⁾

82

400 mm (o.c.)

Interior walls to framing or subflooring

82

600 mm (o.c.)

Horizontal member over openings in non-loadbearing walls – each end

82

2

Lintels to studs

82

2 at each end

Ceiling joist to plate – toe nail each end

82

2

Roof rafter, roof truss or roof joist to plate – toe nail

82

3

Rafter plate to each ceiling joist

101

2

Rafter to joist (with ridge supported)

76

3

Rafter to joist (with ridge unsupported)

76

See Table 9.23.13.8.

Gusset plate to each rafter at peak

57

4

Rafter to ridge board – toe nail – end nail

82

3

Collar tie to rafter – each end

76

3

Collar tie lateral support to each collar tie

57

2

Jack rafter to hip or valley rafter

82

2

Roof strut to rafter

76

3

Roof strut to loadbearing wall – toe nail

82

2

38 mm × 140 mm or less plank decking to support

82

2

Plank decking wider than 38 mm × 140 mm to support

82

3

38 mm edge laid plank decking to support (toe nail)

76

1

38 mm edge laid plank to each other

76

450 mm (o.c.)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Element

Minimum Length of Fasteners, mm

Minimum Number or Maximum Spacing of Fasteners

Common or Spiral Nails

Ring Thread Nails or Screws

Roofing Nails

Staples

Board lumber 184 mm or less wide

51

45

N/A

51

2 per support

Board Lumber more than 184 mm wide

51

45

N/A

51

3 per support

Fibreboard sheathing up to 13 mm thick

N/A

N/A

44

28

150 mm (o.c.) along edges and 300 mm (o.c.) along intermediate supports

Gypsum sheathing up to 13 mm thick

N/A

N/A

44

N/A

Plywood, OSB or waferboard up to 10 mm thick

51

45

N/A

38

Plywood, OSB or waferboard from 10 mm to 20 mm thick

51

45

N/A

51

Plywood, OSB or waferboard over 20 mm thick

57

51

N/A

N/A