Document ID: chunk:federal_register_of_legislation:F2016L00411:reg:63:p2
Version: federal_register_of_legislation:F2016L00411
Segment Type: reg
Provision Reference: reg 63 (pt 2/6)
Character Range: 81478–84148

300mm from a standard.

Table 3 Ledgers

Minimum nominal sizes (mm)  Duty classification of working platform

75 x 38                     Light duty

100 x 50                    Medium duty

100 x 75                    Heavy duty

2.6 Putlogs
The scaffold should be fixed in the transverse plane at each lift with putlogs.
Putlogs should be set above ledgers with their greater cross-sectional dimension vertical and should be securely fixed to the ledgers or standards. Putlogs should be nailed to the upper surface of the ledger to secure them against dislodgement.
At each end of the scaffold, a putlog should be fixed at a distance not greater than 200 mm from the edge of the standard. Where the scaffold is two or more bays in length, a pair of putlogs should be fixed, one on either side of the intermediate standards, with the putlog spacing being not greater than 500 mm.
Where the planks of a working platform butt away from the standards, additional putlogs may be required. In any case, the overhang of planks should not be less than 150 mm and not more than 250 mm. In the case of a single pole scaffold, the inside end of each putlog should be fixed to the house frame by a minimum of two screws and should also be seated on minimum 300 mm long timber blocks of the same cross-section, fixed to the frame studs with a minimum of two nails. No joint should occur in the length of a putlog.
The cross-sectional dimensions and the maximum span of putlogs are set out in Table 4.

Table 4 Putlogs

Minimum sizes (mm)  Duty classification of working platform  Maximum centre to centre span

75 x 38             Light duty                               660mm
100 x 50            Medium duty                              1.2m
125 x 50            Heavy duty                               1.2m

2.7 Bracing
Transverse braces should be fixed diagonally in each lift at each end of the scaffold.
Longitudinal braces should be fixed in each lift of the scaffold to the outside of the outer row of standards, with the distance between braced bays not exceeding three bays in length.
Braces should be fixed diagonally as close as possible to the intersection of the standards and ledgers and, in the first lift, the lower end of a brace should be fixed as close as possible to the intersection of the standard and its soleplate. In the case of a single pole scaffold, the inside end of a transverse brace should be fixed as close as possible to the intersection of a putlog and the building or structure.
Braces should be a minimum of F8 unseasoned hardwood or MGP 12 seasoned pine with cross-sectional dimensions not less than:
    * 75 mm x 38 mm for a scaffold