Australian Capital Territory Current Regulations Australian Capital Territory Current RegulationsGeneral
(1) In this section:
"bracket scaffolding" means a working platform supported by brackets, either of timber or metal, constructed and erected as mentioned in this section.
(2) Bracket scaffolding shall be used only by carpenters, painters, tuck pointers, electricians, plumbers and other like tradespeople who do not require their working platform to carry quantities of materials or to withstand the effects of marked physical activity.
General arrangement
(3) The general arrangement of a timber bracket scaffolding shall be as shown in schedule 7, plate 3, figure 1, provided that the brackets shall not be spaced at a greater distance apart than 14 feet.
Construction of timber brackets—general arrangement
(4) The general arrangement of brackets shall be as shown in schedule 7, plate 3, figure 2 or 3.
Construction of timber brackets—vertical legs
(5) The minimum length of the vertical leg of a bracket shall be 4 feet and the minimum cross-sectional dimensions shall be 4 inches by 3 inches for Oregon pine timber and 4 inches by 2 inches for hardwood timber.
Construction of timber brackets—horizontal legs
(6) The overall length of the horizontal legs shall not exceed 2 feet 6 inches and the cross-sectional dimensions of the legs shall be as set out in subsection (5) for vertical legs.
Construction of timber brackets—connection vertical to horizontal legs
(7) The inboard end of the horizontal leg shall sit fair and square on the upper end of a vertical leg and one shall be connected to the other either by a 14 inch by 14 inch gusset of 14 gauge mild steel plate, secured by 4 3 / 8 inches diameter mild steel bolts, 2 in each leg as shown schedule 7, plate 3, figure 2, or by the insertion of a 3 / 16 of an inch thick mild steel plate connected by 3 (three) 3 / 8 of and inch diameter mild steel bolts as shown in schedule 7, plate 3, figure 3.
Construction of timber brackets—bracing between vertical and horizontal legs
(8) If the vertical leg is connected to the horizontal by a gusset, 1 pair of braces of 3 inch by 1 1 / 4 inch timber shall be used as shown in schedule 7, plate 3, figure 2, or if a mild steel insert is used for this connection 2 pairs of braces of those dimensions shall be used for the purpose as shown in schedule 7, plate 3, figure 3.
(9) In both cases the ends of each brace shall be cut to form a shoulder that shall bear against the horizontal and vertical legs of the bracket, respectively.
Construction of timber brackets—handrail brackets
(10) Handrail brackets constructed of mild steel plate 3 / 16 of an inch thick shall be fixed to the outer end of the horizontal leg of each bracket by 3 / 8 of an inch diameter mild steel bolts as indicated in schedule 7, plate 3, figure 5 and the handrail upright shall be bolted to this bracket.
Struts
(11) The strut used for holding a bracket against a wall shall not be less than 4 inches by 3 inches cross-sectional dimensions for lengths up to and including 20 feet.
(12) The strut shall be so positioned that the 3 inch face is uppermost.
(13) For lengths longer than 20 feet, the cross-sectional dimensions shall be so increased that a strut of equal strength is provided.
(14) The lower ends of the struts shall be effectively secured against movement.
(15) The angle of the struts with the horizontal shall not be greater than 60 ° or less than 50 ° , with the exception that for seasoned brickwork the angle may be flattened to between 40 ° and 60 ° .
Bracing between struts
(16) Struts shall be braced one to the other as indicated in schedule 7, plate 3, figure 1.
(17) The braces, marked ‘B' in the figure, shall have cross-sectional dimensions not less than 3 inches by 1 1 / 4 inches for both hardwood and Oregon pine, and may be spiked, clamped or bolted in position.
Platform
(18) The platform may be of Oregon pine or hardwood scaffold planks.
(19) The overall width of the platform shall not exceed 2 feet 6 inches and the minimum width shall be 1 foot 6 inches.
(20) The scaffold planks shall be spiked or otherwise effectively secured to the brackets at each end and shall be cleated at mid length in the way shown in schedule 7, plate 3, figure 4.
(21) If the distance between brackets does not exceed 12 feet, the thickness of the scaffold planks shall be not less than 1 1 / 2 inches for Oregon pine timber and 1 1 / 8 inches for hardwood timber.
(22) If the distance between brackets exceeds 12 feet but does not exceed 14 feet the thickness of the scaffold planks shall be not less than 1 3 / 4 inches for Oregon pine and 1 3 / 8 inches for hardwood.
Handrails
(23) Handrails shall be fixed at the outer edges and ends of all bracket scaffolding and shall be not less than 3 inches by 2 inches cross-sectional dimensions.
(24) Handrail uprights shall be effectively and rigidly attached to the brackets as mentioned in subsection (10).
Metal brackets
(25) Metal brackets shall be so designed and constructed that they conform to the appropriate design requirements of part 11.
(26) Working platforms supported by metal brackets shall conform to the requirements of this section.
Suspended scaffolding