In addition, masons' multi-point adjustable suspension scaffold connections shall be designed by an engineer experienced in such scaffold design. When winding drum hoists are used on a suspension scaffold, they shall contain not less than four wraps of the suspension rope at the lowest point of scaffold travel. Sand, gravel and similar materials that can be easily dislocated shall not be used as counterweights. What are the specific requirements for counterweights? [, All support devices must rest on surfaces capable of supporting at least four times the load imposed on them by the scaffold when operating at the rated load of the hoist, or at least one-and-a-half times the load imposed on them by the scaffold at the stall capacity of the hoist, whichever is greater. [29 CFR 1926.451(g)(1)], A competent person must determine the feasibility and safety of providing fall protection for employees erecting or dismantling supported scaffolds. [29 CFR 1926.453(b)(2)(v) and 29 CFR 1926.451(g)(3)], Vertical or horizontal lifelines may be used. For example: A scaffold erected What are scaffold platform construction requirements? 5.3.11 Scaffolding fittings (couplers) shall be lifted and lowered in a safe manner using Gin Wheel, Rope and Canvas bucket, throwing of scaffolding tubes & fittings to the work area shall not be permitted. [29 CFR 1926.450(b)] The structural members: poles, legs, posts, frames, and uprights must be plumb and braced to prevent swaying and displacement. All suspension scaffold support devices, such as outrigger beams, cornice hooks, parapet clamps, and similar devices, shall rest on surfaces capable of supporting at least 4 times the load imposed on them by the scaffold operating at the rated load of the hoist (or at least 1.5 times the load imposed on them by the scaffold at the stall capacity of the hoist, whichever is greater). [29 CFR 1926.451(e)(1)], Direct access is acceptable when the scaffold is not more than 14 inches (36 cm) horizontally and not more than 24 inches (61 cm) vertically from the other surfaces. WebWhen scaffold platforms are more than 2 feet (0.6 m) above or below a point of access, portable ladders, hook-on ladders, attachable ladders, stair towers (scaffold Construction materials such as, but not limited to, masonry units and rolls of roofing felt, shall not be used as counterweights. Web(1) A type of supported scaffold set on wheels or casters (2) A simple device consisting of a platform resting on brackets attached to a ladder (3) A uniquely designed scaffold consisting of a platform supported by moveable brackets on vertical poles (1)Mobile Scaffold (2) Ladder Scaffold (3) Pump Jack Scaffold [29 CFR 1926.451(d)(6)], Gears and brakes must be enclosed. Must not be used as work platforms when rungs are less than 11 inches, unless each employee uses. Greater variations in riser height are allowed for the top and bottom steps of the entire system, not for each flight of stairs. Tables showing maximum permissible spans, rated load capacity, and nominal thickness are in 29 CFR 1926 Subpart L Appendix A(1)(b) & (c) of the standard. [29 CFR 1926.451(a)(1)] A qualified person must design the scaffolds, which are loaded in accordance with that design. Six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay. Vertical lifelines, independent support lines, and suspension ropes shall not be attached to each other, nor shall they be attached to or use the same point of anchorage, nor shall they be attached to the same point on the scaffold or personal fall arrest system. Personal fall-arrest systems include harnesses, components of the harness/belt such as D-rings, and snap hooks, lifelines, and anchorage points. WebScaffold design. Where scaffolds must be used in areas that the employer can demonstrate are so narrow that platforms and walkways cannot be at least 18 inches (46 cm) wide, such platforms and walkways shall be as wide as feasible, and employees on those platforms and walkways shall be protected from fall hazards by the use of guardrails and/or personal fall arrest systems. Handrails, and top-rails used as handrails, must be at least 3 inches from other objects. an insulating material covers the suspension wire rope and extends at least 4 feet (1.2 m) above the hoist. The use of repaired wire rope as suspension rope is prohibited. Webf. Note to paragraph (g)(1): The fall protection requirements for employees installing suspension scaffold support systems on floors, roofs, and other elevated surfaces are set forth in subpart M of this part. 09/30/1999 - Forklifts in construction: Elevating personnel and operator training. A suspension scaffold contains one or more platforms suspended by ropes or other non-rigid means from an overhead structure, 29 CFR 1926.450(b), such as the following scaffolds: single-point, multi-point, multi-level, two-point, adjustable, boatswain's chair, catenary, chimney hoist, continuous run, elevator false car, go-devils, interior hung, masons', and stone setters'. To reduce the possibility of welding current arcing through the suspension wire rope when performing welding from suspended scaffolds, the following precautions shall be taken, as applicable: An insulated thimble shall be used to attach each suspension wire rope to its hanging support (such as cornice hook or outrigger). A personal fall-arrest system is a system used to arrest an employee in a fall from a working level. SCAFFOLDING IN NEW ZEALAND KEY POINTS: Duty holders have responsibilities under the Health and Safety at Work Act Steps and rungs of ladders and stairways must line up vertically with each other between rest platforms. c) Added guidance for assessing base soil conditions. NY Scaffold is the leading specialty Scaffold Erector Company covering the whole of the US. Where the employer makes the demonstration provided for in paragraph (b)(1)(i) of this section, the platform shall be planked or decked as fully as possible and the remaining open space between the platform and the uprights shall not exceed 9 1/2 inches (24.1 cm). Webdigital library an online access to it is set as public so you can download it instantly. The end points at each upright shall be no more than 48 inches (1.3 m) apart. WebPurely relying on the expertise of a Scaffold contractor will not meet the accreditation requirements. The load end of wire suspension ropes shall be equipped with proper size thimbles and secured by eyesplicing or equivalent means. Do employees working on supported scaffolds need to be trained? The platform must not deflect more than 1/60 of the span when loaded. WebNever alter a scaffold structure or extend it. Before the scaffold is used, direct connections shall be evaluated by a competent person who shall confirm, based on the evaluation, that the supporting surfaces are capable of supporting the loads to be imposed. What Are the Requirements for Supported Scaffolds? This includes ladders, boxes, and barrels. Only those items specifically designed as counterweights shall be used to counterweight scaffold systems. [29 CFR 1926.451(g)(3)(iii) and 29 CFR 1926.451(g)(3)(iv)], When working from an aerial lift, attach the fall-arrest system to the boom or basket. Each toprail or equivalent member of a guardrail system shall be capable of withstanding, without failure, a force applied in any downward or horizontal direction at any point along its top edge of at least 100 pounds (445 n) for guardrail systems installed on single-point adjustable suspension scaffolds or two-point adjustable suspension scaffolds, and at least 200 pounds (890 n) for guardrail systems installed on all other scaffolds. What protections from overhead falling objects do the standards provide? Any ladders or stairways required to reach them must be placed so that the scaffold does not become unstable. [29 CFR 1926.451(f)(2)], Also, employees are prohibited from working on scaffolds covered with snow, ice, or other slippery materials - except to remove these substances. Each ladder jack scaffold, top plate bracket scaffold, roof bracket scaffold, and pump jack scaffold shall be at least 12 inches (30 cm) wide. Must have their bottom step no more than 24 inches above the level on which Non-uniform rung spacing caused by joining end frames together is allowed, provided the resulting spacing does not exceed 16 3/4 inches (43 cm). above the scaffold supporting level. Unstable objects shall not be used as working platforms. Scaffolds must be equipped with proper access and may include dual access as necessary. Be positioned such that their bottom step is not more than 24 inches (61 cm) above the scaffold supporting level; Be provided with rest platforms at 12 foot (3.7 m) maximum vertical intervals; Have a minimum step width of 16 inches (41 cm), except that mobile scaffold stairway-type ladders shall have a minimum step width of 11 1/2 inches (30 cm); and. Direct connections to roofs and floors, and counterweights used to balance adjustable suspension scaffolds, shall be capable of resisting at least 4 times the tipping moment imposed by the scaffold operating at the rated load of the hoist, or 1.5 (minimum) times the tipping moment imposed by the scaffold operating at the stall load of the hoist, whichever is greater. Planking or Decking What materials can be used to increase the working level height of employees on supported scaffolds? Note to paragraph (b)(2)(i): Pursuant to an administrative stay effective November 29, 1996 and published in the Federal Register on November 25, 1996, the requirement in paragraph (b)(2)(i) that roof bracket scaffolds be at least 12 inches wide is stayed until November 25, 1997 or until rulemaking reguarding the minimum width of roof bracket scaffolds has been completed, whichever is later. Here are the scaffold guardrail This paragraph applies to scaffold access for all employees. Two tie-backs installed at opposing angles are required when a perpendicular tieback cannot be installed. Web(1) When scaffold platforms are more than 2 feet (0.6 m) above or below a point of access, portable ladders, hook-on ladders, attachable ladders, stair towers (scaffold stairways/towers), stairway-type ladders (such as ladder stands), ramps, walkways, integral prefabricated scaffold access, or direct access from another scaffold, structure, [, A competent person must evaluate all direct connections prior to use to confirm that the supporting surfaces are able to support the imposed load. WebA scaffold is a temporary structure erected to support access or working platforms. [29 CFR 1926.451(c)(2)(i) and 29 CFR 1926.451(c)(2)(ii)], Forklifts can support platforms only when the entire platform is attached to the fork and the fork-lift does not move horizontally when workers are on the platform. [29 CFR 1926.451(d)(15)], An automatic braking and locking device, in addition to the operating brake, must engage when a hoist makes instantaneous change in momentum or an accelerated overspeed. Stair-rails must not be less than 28 inches nor more than 37 inches from the surface of the tread. [29 CFR 1926.451(d)(13)], The stall load of any scaffold hoist must not exceed three times its rated load. [29 CFR 1926.451(g)(2)]. [29 CFR 1926.451(d)(3)(ii)], Counterweights must be secured by mechanical means to the outrigger beams. Steps and rungs of ladder and stairway type access shall line up vertically with each other between rest platforms. This provision does not preclude the use of systems which are designed to function both as suspension scaffolds and emergency systems. [. The toprail of each stairrail system shall also be capable of serving as a handrail, unless a separate handrail is provided. 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