SCAFFOLDING AND LIFTS REGULATION 1950 - REG 90
SCAFFOLDING AND LIFTS REGULATION 1950 - REG 90
Loading
(1) Suspended scaffolding constructed and erected in accordance with this section or to an approved design and description shall not at any time be loaded, except in a bona fide test in the presence of an inspector, in excess of the maximum load permitted by this section or specified by the chief inspector in an approval.
(2) The load on the platform over any one bay of a suspended scaffolding, constructed in accordance with this section, due to the weight of workers and materials shall not exceed 1 200 pounds and the gross weight, that is, the weight of scaffolding platforms, machine, ropes, workers and materials on any one outrigger shall not exceed 1 800 pounds or the load that is approved.
Inspection
(3) The moving parts of every scaffolding machine shall be inspected at least twice a month and a record shall be kept of the findings of the inspections.
(4) This record shall be accessible to an inspector at all times.
(5) The owner of a scaffolding machine shall be notified to at once replace any defective or worn parts and the use of the machine shall be discontinued until the required replacements have been made.
(6) In addition the owner or lessor of every scaffolding machine shall make a monthly inspection of every scaffolding machine in use and a record of the findings shall be kept.
(7) This record shall also be accessible to an inspector at all times.
(8) When a scaffolding machine is removed from a location, it shall be thoroughly inspected and overhauled before again being used.
Platform
(9) The total width of the working platform shall not exceed 5 feet.
(10) The working platform shall be formed of scaffold planks laid so that their edges abut and fit tight.
(11) Scaffold planks shall be of Oregon pine not less than 10 inches wide and 2 inches thick.
(12) Each scaffold plank shall overlap its support by at least 12 inches but not more than 24 inches at the ends of the scaffolding.
(13) The ends of the scaffold planks of each unit, comprising 4 machines, shall be cleated and the cleats shall be made of 4 inches by 1 1 / 2 inches timber, or of 2 inches by 3 / 8 of an inch steel placed near the ends of the planks and outside the bearers and be so arranged as to ensure that the ends of the planks cannot lose their bearing on a bearer.
(14) Each scaffold plank shall be secured to the cleats by bolts not less than 3 / 8 of an inch in diameter.
(15) Every such platform shall be supported on bearers made of steel, or other approved metal, having a transverse strength at least equivalent to a 2 inches by 2 inches by 3 / 8 of a inch Australian Standard steel angle section.
Guardrails and fender boards
(16) Guardrails constructed in conformity with this regulation shall be effectively secured at a height of not less than 3 feet above the platform surface.
(17) Fender boards 9 inches high and 1 1 / 2 inches thick shall be effectively secured on the outside, inside and ends of each platform.
Prevention of swaying
(18) Ropes or hooks shall be used and fastened to the platform of the scaffolding and to the building or structure in such way and at such intervals as to prevent the scaffolding swaying away from the building or structure.
(19) Likewise fenders shall be provided if required to prevent the scaffolding from swinging against the building or structure.
Suspended scaffolding machines
(20) No scaffolding machine, winch or other like mechanism shall be used as the lifting or lowering mechanism of a suspended scaffolding unless drawings, or a sample of the machine, winch, or mechanism, together with a complete description in writing of how the machine, winch, or mechanism is to be set up, used, and maintained, have previously been submitted to the chief inspector and have been approved.
(21) All such machines, winches, and mechanisms shall be designed, set up, used and maintained as provided in the section and in accordance with the approved design and description, and while in use shall be kept lubricated and maintained in an efficient state of repair, free from accumulation of dust, dirt or foreign matter.
Wire ropes for suspended scaffolding
(22) Steel wire ropes of approved flexibility shall be used for suspended scaffolding.
(23) The terminal ends of every such rope shall be effectively secured to anchorages of ultimate strength at least equal to that of the rope.
(24) Ropes shall be evenly wound on the drum and not more rope than can be accommodated between the drum flanges shall be wound on the drum.
Platform steel structural members
(25) The steel structural members of a suspended scaffolding platform shall be so designed, constructed and used that under maximum conditions of loading the stress in each and every part of the members and in the connections of one part or member to another shall not exceed that prescribed by part 11.
Cantilevers supporting a suspended scaffolding
(26) The cantilevers constituting the overhead supports for a suspended scaffolding shall be rolled steel joist sections at least equivalent in strength to a 7 inches by 3 1 / 2 inches by 15 pounds per running foot Australian Standard rolled steel joist section.
(27) The cantilevers shall be at least 15 feet in length and they shall not project more than 6 feet 6 inches from the outside point of support on a building or structure.
(28) These cantilevers shall be spaced at not more than 10 feet apart measured from the longitudinal centre-line of one to the longitudinal centre-line of the adjacent cantilever.
Supports for suspended scaffolding cantilevers
(29) Every such cantilever shall be provided with an adequate and firm support and the support shall be so arranged that the projecting or cantilever part shall be as short as possible.
Fixing of suspended scaffolding cantilevers
(30) The inner end of each cantilever shall—
(a) be secured to the building or structure with bolts or other suitable fittings; or
(b) be counterbalanced with weights in accordance with the provisions of part 11; or
(c) be shored from a higher floor or steel frame of a building or structure, provided that every shore used is positively secured in its correct position and in such a way that no lateral movement can occur, and provided further that every shore so used is of adequate strength for the purpose and is so placed and fixed that undue load is not imposed on any part of the building or structure supporting the cantilever.
(31) The bolts or other fittings mentioned in subsection (30) (a), and also the parts of the building or structure to which the cantilever is fixed, shall provide a factor of safety of at least 4 under maximum conditions of loading.
Suspended scaffolding cantilever supports
(32) Every platform or structure, or beam, bearer, or other structural member used for supporting any such cantilever and the loads from it or from any counterbalance or used for supporting and transferring the weight of counterbalance to cantilever, or used for transferring the loads from a cantilever to part of a building or structure shall be of such construction that a factor of safety of at least 6 shall obtain in all timber parts, taking into consideration the resultant loads from the cantilever when the suspended scaffolding is fully loaded, and also, when the scaffolding is unloaded.
(33) Every such platform, or structure, or beam, bearer, or other structural member shall be so constructed and fixed and secured that lateral movement cannot occur in any direction.
Bolt diameters
(34) Every bolt used for anchoring a cantilever or used in connections in the structure supporting a cantilever or for securing a shore in position, or for securing bracing or other structural member shall not be less than 5 / 8 of an inch in diameter and shall be provided with standard washers.
Weight of cantilever counterbalance
(35) The net weight of the counterbalance on any cantilever shall not be less than 3 times that necessary to balance the load on the projecting part of the cantilever when the scaffolding is fully loaded.
Suspended scaffolding rope anchors
(36) A fitting of mild steel stock having sectional dimensions not less than 2 inches by 3 / 8 of an inch shall be fitted at the outer end of every suspended scaffolding cantilever for the purpose of anchoring the scaffolding suspension rope or rope block.
(37) Every such fitting shall fit snug at the top and sides of the cantilever.
(38) Each leg shall be so forged as to make an angle of not less than 75 ° with the bottom surface of the cantilever, until the inside faces of each leg are 1 inch apart.
(39) Each leg shall then be forged so as to assume a vertical position.
(40) The legs are to be of such length that the vertical portions are parallel for not less than 2 1 / 2 inches.
(41) The vertical part of each leg shall then be drilled to take a 3 / 4 of an inch diameter steel bolt, the centre of the bolt hole being not less than 1 inch distant from the lower bend.
(42) A steel bolt not less than 3 / 4 of an inch in diameter shall be inserted in the holes in the vertical legs, the bolt nut then being screwed on and the end of the bolt riveted over, or alternatively a split pin may be fitted in a hole drilled through the bolt end outside the nut.
(43) Every such fitting shall be secured to the cantilever by a bolt through the sides of the fitting and through the mid-section of the cantilever web or by a bolt passing through the cantilever web nearer the end of the cantilever than the spot where the fitting is positioned.
Use of suspended scaffolding machines
(44) No person under 18 years old and no person unless specifically authorised by his or her employer so to do, shall work a machine, winch, or mechanism used for raising or lowering a suspended scaffolding and no person shall in any way interfere with it.
(45) No person shall employ, instruct or direct any person under 18 years old to act in contravention of this provision.
(46) The handles of the scaffolding machine, winch, or mechanism shall be left in that position that will prevent the platform from descending when the machine, winch, or mechanism is not actually in use for raising or lowering the platform.
Platform to be kept level
(47) The process of raising and lowering a suspended scaffolding shall be such as to ensure that the working platform shall remain substantially level.
Restrictions on use of suspended scaffolding
(48) Suspended scaffolding shall not be used if in the opinion of an inspector—
(a) the position of the scaffolding and the conditions under which the scaffolding is or would be used are dangerous to human life or limb; or
(b) the building or structure to which the scaffolding is attached or is proposed to be attached is not suitable for safely supporting a suspended scaffolding; or
(c) the scaffolding is not suitable for the work contemplated.
Light swinging stages