A scaffold is defined as an elevated, temporary work platform. • Supported scaffolds, which consist of one or more platforms supported by rigid, load-bearing members, such as poles, legs, frames, outriggers, etc. If you see such a situation, do not get on that scaffold. Wire or fiber rope used for scaffold suspension shall be capable of supporting at least six times the intended load. Loads arising from fall arrest events should be considered by the scaffold designer for which useful references include SG4[6] and BS EN 795[7] and BS 7883[7]. The rated load capacity of a scaffold is defined below. We've put together a comprehensive step-by-step guide to help you perform a job safety analysis (JSA), which includes a pre-built, JSA checklist and template, steps of a JSA, list of potential job hazards, and an overview of hazard control hierarchy. The OSHA scaffold standard states "guys, ties, and braces shall be installed at locations where horizontal members support both inner and outer legs". Scaffolds 3 ft. and narrower must be tied at vertical intervals no more than 20 ft. apart. According to OSHA, nearly 65 percent of workers in the construction industry work on scaffolds frequently. The following controlmeasures should be implementedfor a hungscaffold: The hung scaffold should be designed by a competent person and verification obtained that the structure that is to support the hung scaffold is capable of bearing the design load. 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If a worker is using electrical equipment on a scaffold, the scaffold must be . To help answer your key recordkeeping questions, IndustrySafe put together this guide with critical compliance information. The following guidance relates to predictable loads arising from normal use of scaffold structures, e.g. Any part of a building or structure used to support the scaffold must be capable of supporting the maximum intended load. Generally, that will require ties at least at 4m height intervals. The first vertical tie should be at the maximum height of 4 times the narrowest base dimension. What is Scaffolding Safety? Don’t get sloppy and risk a failure. 1926.451(g)(4) • Footings—Support scaffold footings shall be level and capable of supporting the loaded scaffold. not greater than 26 feet. grounded For voltages over 50 kV, the scaffold must not Guying ties, and braces -- Supported scaffolds with a height-to-base of more than 4:1 shall be restained from tipping by guying, tying, bracing, or the equivalent. EZ Scaffold Single Mast Climbers should be tied off when the working height reaches 20’. Scaffold should be erected as close as practicable to the working face. Designed by qualified person and built loaded to design. Install ties as close as practicable where horizontal members connect to vertical legs. Dallas, TX 75254 Supported scaffold poles, legs, posts, frames, and uprights shall bear on base plates and mud sills or other adequate foundation capable of supporting a loaded scaffold. Therefore, every tie-in must prevent the scaffold from both push and pull effects. 11. Are you prepared? 1910.28(a)(27) Special precautions shall be taken to protect scaffold members, including Erect next lifts. With the high potential for serious injury, construction safety education remains a top priority. The scaffolding plan should include information about the position of the check couplers. Must be capable of supporting at least 4 times the maximum intended load. Following are some basic guidelines for workers who use scaffolds: This article originally appeared in the August 2007 issue of Occupational Health & Safety. Scaffold and scaffold components shall not be loaded in excess of their maximum intended load or rated capacity, whichever is less. Scaffolding safety is a set of preemptive actions in building, inspecting, using, and tagging scaffolds. scaffold must not . the scaffolding components to which the ties and butts are attached are capable of safely sustaining the additional loads resulting therefrom. Ties should be fixed to both verticals of the tower at both ends of the tower. Scaffolding should be tied to the structure using #9 wire or tie-in devices. – Avoid the following unsafe practices: •Lean-to scaffolds ... Scaffold frames must never be spaced wider than 10 feet apart. Must be capable of supporting at least 4 times the maximum intended load. A vast number of those in the construction industry use scaffolding on a daily basis. All scaffolding must be erected, dismantled and altered in a safe manner. unless a specific engineering design is provided, fix the first row of ties no more than 4 … 10 feet Each scaffold must be capable of supporting, without failure, it's own weight and at least 4 times the maximum intended load applied or transmitted to it. The uppermost tie should be placed as close to the top as possible and, in no case, more than 4 times the minimum base width from the top. For instance, if the scaffolding is: 3’ wide, the initial tie off must be at 12’; 4’ wide, the initial tie off must be at 16’; and 5’ wide, the initial tie off must be at 20’. (5) Metal scaffolds shall be securely tied to the building or structure by means of a double looped No. Complete this form to sign up for our email newsletter. Additional, accidental, loads are not covered. Where the scaffold is greater than 225 mm from the working face, install guardrails and mid-rails to the inner face standards. following general guidelines apply: a. When a crosspoint of crossbracing is used as a midrail, it must be between 20 inches (0.5 meters) and 30 inches (0.8 m) above the work platform. Need some tips for conducting an incident investigation at work after there’s been an occupational injury or illness, or maybe even a near miss? Common types of supported scaffolds are frame, system, mobile (rolling), etc. Check the following before using scaffolding and inspect on an adequate basis: the base is sound, level and adjusted, legs are plumb and all braces are in place, locking devices and ties are secured, cross members are level, planks are of the proper grade(s) of lumber and have no weak areas, deterioration, or cracks. From steel erectors to building equipment installers, bricklayers, window washers, carpenters, and painters, just to name a few, nearly 2.3 million construction workers frequently work on scaffolds. and changing landscapes. 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. be set up, used, taken down, changed, or moved in any way that would put the scaffold and its components closer than 10 ft. to exposed and energized powerlines less than 50 kV . IndustrySafe Safety Management Software helps organizations to improve safety by providing a comprehensive toolset of software modules to help businesses identify trouble spots; reduce claims, lost days, OSHA fines; and more. Maximum horizontal distance between ties is not to exceed 30’. In some cases, it may no be feasible or practical to tie off the scaffolding such … Footing or anchorage of scaffolds must be sound, rigid, and capable of carrying the maximum intended load without displacement. This is achieved by following the guidance provided by the NASC in document SG4 ‘Preventing falls in scaffolding’ for tube and fitting scaffolds or by following similar guidance provided by the manufacturers of system scaffolding. The horizontal ties are capable of withstanding a 750-pound lateral pull, with a safety factor of 4:1; Ties are installed along the length of the scaffold at intervals not to exceed 30 feet; and; The scaffold is tied to the structure at the first lift and at intervals not to exceed every 18 feet. Scaffolds wider than 3 ft. must be tied at vertical intervals no more than 26 ft. apart. About Scaffolding If an inspection identifies a problem with the scaffold, access to the scaffold must be controlled and any necessary repairs, alterations and additions completed. Each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least four times the maximum intended load applied or transmitted to it. Tie-in requirements may increase if heavy wind loads are anticipated. Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the supervision of a scaffold competent person. Tie Scaffold to the Building Ties must be placed as near as possible to horizontal members. OSHA’s Form 300A posting deadline is February 1! 12 iron wire, or single looped No. Masonry For example, a design specifying an unusual base structure that has to be erected to support the scaffold may introduce unique hazards and risk controls. How much load should all suspension scaffold support devices be capable of supporting? The Bureau of Labor Statistics revealed in 1996 that 25 percent of workers injured in scaffold accidents had received no scaffold training. To ensure scaffolding safety, the scaffold must be built under the supervision of a competent person, and workers must be trained by a qualified person before they use the scaffold. missing parts due to area obstructions). not ropes or straps) to a suitably strong and secure adjacent structure. Ties must prevent the scaffold from tipping either into or away from the structure. The three basic types of scaffolds are: Scaffold components of dissimilar metal… 1910.28(a)(23) When acid solutions are used for cleaning buildings over 50 feet in height, wire rope supported scaffolds shall be used. Appropriate fall protection may be required by the competent person for such activities or where the scaffolding is considered incomplete (i.e. 5030 Dexham Rd. The most important preventative measures are training and education, proper selection of equipment, and proper use of equipment. Footings, sills or supports must be capable of supporting at least 2 times the maximum load to which they are subjected without settlement. This guide presents a comprehensive overview of methods of performing incident investigations to lead you through your next steps. Rated Load Capacity . The shortest Utah scaffold is still at least 2,000 feet higher than a scaffold in New York City, even if you construct it in Beaver Dam Wash, Utah. 16. Additional ties are not to exceed 26’ vertically. Once the work is complete the scaffold must be inspected again. The scaffolding selected must be able to withstand this load (the safety factor of four is designed into the rated load capacity). Tie-offs Where possible, push/pull ties should be used, ensuring that the tie tube is connected to both frame legs with right angle clamps. F. WHEN SCAFFOLDS ARE FULLY OR PARTIALLY ENCLOSED, or when scaffolds are subjected to overturning forces, additional ties may be required; consult a qualified person. • Other scaffolds, principally man lifts, cherry pickers, scissor lifts, etc., are sometimes thought of as vehicles or machinery but can be regarded as another type of supported scaffold. Construction sites are inherently unstable environments, with movement of workers, materials, etc. SCAFFOLD TIES 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. 1926.451(c)(1) Capacity -- Scaffolds and scaffold compponents must support at least 4 times the maximum intended load. Preventing Scaffolding Accidents Installation of ties and braces must be done in a workmanlike manner. The legs, poles, frames, and uprights shall bear on base plates and mud sills. The tower must be tied with sufficient suitably strong rigid two-way ties (i.e. Each suspension rope, including connecting hardware, used on adjustable suspension scaffolds shall be capable of supporting, without failure, at least 6 times the maximum intended load applied or transmitted to that rope with the scaffold operating at either the rated load of the hoist, or 2 (minimum) times the stall load of the hoist, whichever is greater. Log in, Southwest Scaffolding, Meeting OSHA Scaffolding Requirements. If a tie or butt must be removed for any reason, alternate or substitute ties and butts or other methods must be used to ensure the continued stability of the scaffold… Ties must prevent the scaffold from tipping either into or away from the structure. Scaffold baseplates and mudsills increase the area where the downward forces of the scaffold are transmitted. 14901 Quorum Drive, Suite 425 A scaffold must always be secured when the height of the scaffold exceeds 4 times the minimum base dimension (length or width). Rowlett, TX 75088, Non-Stop Scaffolding Individual Parts and Accessories, OSHA Scaffolding Requirements – Tie Off Locations. The ground surface must be evaluated by a qualified person in order to determine if it is capable of supporting the load — including the weight of the scaffold, workers and building materials. • Suspended scaffolds, which are one or more platforms suspended by ropes or other non-rigid, overhead support. capable of transferring the tensile and compressive loads involved. See Footnote 1. b. In 2004, approximately 400,000 workers suffered construction-site injuries. Education is the most powerful tool in reducing the number and severity of scaffold-related injuries. Ste, 101 (Think about it) Fall restraint; you don’t want to come out of the basket due to the cantilever effect. The top tie shall be installed as clos e to the top of the platform as possible; however, no lower from the top than 4 times the scaffold’s minimum base dimension. Keys to reducing accidents are education, proper selection, and proper use of equipment. A designer must prepare a safety report for a specific or unusual scaffold designs but not for common scaffold designs where the risks are already known. Scaffold structures should not be tied to newly built masonry structures until the mortar joints have cured sufficiently to withstand the loads and structures have adequate stability. OSHA competent person and green card requirements. Scaffold components cannot be mixed if they are from different manufacturers unless they fit together without force. wind loads, as per TG20. 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