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Wood scaffold planks bay area11/19/2023 ![]() The work platform provides the worker with a safe environment from which to work. If it is not possible to tie the scaffold to a structure, a professional engineer must provide special design considera- tions. Tie tubes should be installed on the same bay as the internal bracing. Where possible, push/pull ties should be used, ensuring that the tie tube is con- nected to both standards (or both ledgers near the standard) with right angle clamps. Where the scaffold height exceeds three times the smallest base dimension (3:1 ratio), scaffolds must be tied at least every 4.57m (15’-0”) intervals vertically and 6.0m (20’-0”) horizontally. As a minimum, it should be installed at the base and on the same level as the scaffold ties. Plan bracing (horizontal diagonal) is recommended and is often required. In the multiple-bay configuration, the desired angle is 45° to the horizontal, close to the node point, and this should be continuous to full height, and in many cases will be designed by an engineer. If single-bay bracing is selected it must be in both end bays and at least every 15m (50’-0”) longitudinally. ![]() Sway or façade bracing should be installed on the outside face of the scaffold to full height, and can be either in one single bay or extended across multiple bays. ![]() Any ledger that is longer than 1.52m (5’-0”) and is supporting a load should be a double ledger or equivalent.Īs bracing has a pre-determined length, select the correct size of bracing, and brace standards internally every 6m (20’-0”) in length, and ensure that bracing extends to the full height of the scaffold. The vertical spacing or lift height between ledgers should not exceed 1.98m (6’-6”). Ledgers are manufactured in pre-determined lengths and the bay size is normally determined by loading criteria. Always check loading requirements and if necessary, seek approved engineered drawings.Ĭonnect the ledgers to the standard at the desired lift height by positive connection. Standards are manufactured in pre-determined lengths and the spacing of standards is dependent upon the loading to be imposed on the scaffold. Level the base by starting at the highest point of ground level and ensure accuracy, as you do not have to level the scaffold after the base has been completed. Any part of a building or structure that is used to support the scaffold shall be capable of supporting the maximum intended load to be applied, and must be verified by a professional engineer.Īlways use adjustable bases with system scaffolds and other components that the manufacturer recommends. ![]() Footings, sills or supports must be capable of supporting at least 2 times the maximum load to which they are subjected without settlement. Where necessary, provide adequate continuous wood sills and ensure that they are not less than 50mm x 250mm (2” x 10”) and cover two frame legs in length. Never construct a scaffold on unprepared foundations. Complete jobsite hazard evaluation and amend your standard fall protection plan with site-specific requirements. When possible, always survey the job site to identify any potential hazard condition. Never use any equipment that is damaged or defective in any way. Only competent workers may construct scaffolds. Workers must be properly trained or instructed before they use equipment. It is recommended that these instructions are the subject of tool box meetings. Where possible, post the Code of Safe Practice in a conspicuous place and ensure that all persons who erect, dismantle or use scaffolding are aware of these. The user shall be responsible to comply with all recognized provisions. They are not intended to supersede the requirements of any provincial regulations, codes and ordinances. These guidelines do not purport to be all-inclusive or replace other additional safety and precautionary measures. The following are some common sense rules designed to promote safety in the construction of scaffolding.
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