Must have a rung length of at least 8 inches. Gasoline-powered equipment and hoists shall not be used on suspension scaffolds. Kinks that might impair the tracking or wrapping of rope around the drum(s) or sheave(s). [29 CFR 1926.451(d)(6)], Gears and brakes must be enclosed. [, Emergency escape and rescue devices must not be used as working platforms, unless designed to function as suspension scaffolds and emergency systems. Must have slip-resistant treads on all steps and landings. [29 CFR 1926.451(g)(3)(i)], No. In these situations, only the planking that the employer establishes is necessary to provide safe working conditions is required. [, Guardrails, a personal fall-arrest system, or both must protect each employee more than 10 feet (3.1 m) above a lower level from falling. 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. What exactly is sufficient clear space? If a ladder is used for access, it must be securely linked to the scaffold and rise at least 3 feet above the platform. Debris shall not be allowed to accumulate on platforms. Swaged attachments or spliced eyes on wire suspension ropes shall not be used unless they are made by the wire rope manufacturer or a qualified person. Must be at least 18 inches wide between stair-rails, and have a landing platform at least 18 inches wide by at least 18 inches long at each level. When used on a supported scaffold more than 35 feet high, must have rest platforms at 35-foot maximum intervals. [29 CFR 1926.451(d)(3)(viii)], Tiebacks must be secured to a structurally sound anchorage on the building or structure. [29 CFR 1926.451(h)(1), 29 CFR 1926.451(h)(2) and 29 CFR 1926.451(h)(3)], Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers. What are the requirements for work on platforms cluttered with debris? [29 CFR 1926.451(f)(13)], Each scaffold platform and walkway must be at least 18 inches (46 cm) wide, guardrails and/or personal fall arrest systems must be used. [29 CFR 1926.451(d)(3)(x)]. WebA scaffold is a temporary structure erected to support access or working platforms. What are the fall protection requirements for all scaffolds? The portion of the tail line that hangs free below the scaffold shall be guided or retained, or both, so that it does not become grounded; Each hoist shall be covered with insulated protective covers; In addition to a work lead attachment required by the welding process, a grounding conductor shall be connected from the scaffold to the structure. Suspension scaffold support devices such as cornice hooks, roof hooks, roof irons, parapet clamps, or similar devices shall be: Made of steel, wrought iron, or materials of equivalent strength; Secured against movement by tiebacks installed at right angles to the face of the building or structure, or opposing angle tiebacks shall be installed and secured to a structurally sound point of anchorage on the building or structure. Must have a stair-rail, consisting of a top-rail and a mid-rail, on each side. [29 CFR 1926.451(f)(14) and 29 CFR 1926.451(f)(15)], Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Tiebacks shall be equivalent in strength to the hoisting rope. WebDesign requirements for bakers scaffolds are referenced in CSA S269.2 Access Scaffolding for Construction Purposes. [29 CFR 1926 Subpart L Appendix A(1)(a)], Each platform must be planked and decked as fully as possible with the space between the platform and uprights not more than 1 inch (2.5 cm) wide. At all points of a scaffold where the platform changes direction, such as turning a corner, any platform that rests on a bearer at an angle other than a right angle shall be laid first, and platforms which rest at right angles over the same bearer shall be laid second, on top of the first platform. [29 CFR 1926.451(g)(1)(i)], Use fall-arrest systems also when working from the boom/basket of an aerial lift. Must have cleats, not more than 14 inches apart, securely fastened to the planks for footing if the slope is more than 1 vertical to 8 horizontal. [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. Provides general requirements for all scaffolds Effective September 2, 1997, the employer shall have a competent person determine the feasibility and safety of providing fall protection for employees erecting or dismantling supported scaffolds. Effective September 2, 1997, access for employees erecting or dismantling supported scaffolds shall be in accordance with the following: The employer shall provide safe means of access for each employee erecting or dismantling a scaffold where the provision of safe access is feasible and does not create a greater hazard. When Scaffolding is Needed The very short answer is: when a risk assessment outlines it is necessary! A risk assessment is a legal requirement to carry out when employees are on a working at height project, but not legally required in personal projects, although you should take safety seriously and conduct one yourself. Gears and brakes of power-operated hoists used on suspension scaffolds shall be enclosed. "Access." 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. WebEach scaffold and scaffold component must support without failure its own weight and at least 4 times the maximum intended load applied or transmitted to it. When screens and mesh are used, they shall extend from the top edge of the guardrail system to the scaffold platform, and along the entire opening between the supports. [29 CFR 1926.451(c)(2)(iv)]. Some of the requirements for all types of suspension scaffolds include: Counterweights used to balance adjustable suspension scaffolds must be able to resist at least four times the tipping moment imposed by the scaffold operating at either the rated load of the hoist, or one-and-a-half (minimum) times the tipping moment imposed by the scaffold operating at the stall load of the hoist, whichever is greater. Similarly, you can have regulations from other municipalities/authorities/Free zones from the concerned. When do supported scaffolds need to be restrained from tipping? [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. Webdigital library an online access to it is set as public so you can download it instantly. WebScaffolding, also called scaffold or staging, is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other man-made structures.Scaffolds are widely used on site to get access to heights and areas that would be otherwise hard to get to. In general, each scaffold and scaffold component shall be capable of supporting, without failure, its own weight and at least 4 times the maximum intended load applied or transmitted to it. What are the capacity requirements for all scaffolds? For example: A scaffold erected this Section and Section 24.B. Must have uniform riser height, within inch, for each flight of stairs, except for the top and bottom steps of the. What are the specific requirements for counterweights? Wind screens shall not be used unless the scaffold is secured against the anticipated wind forces imposed. [29 CFR 1926.451(a)(1)] A qualified person must design the scaffolds, which are loaded in accordance with that design. When an outrigger beam is used, the shackle or clevis with which the rope is attached to the outrigger beam shall be placed directly over the center line of the stirrup. The employer shall have a competent person determine whether it is feasible or would pose a greater hazard to provide, and have employees use a safe means of access. The second part is sufficient clearance. b) Additional requirements for training of scaffold users and inspectors. Guardrails meeting the requirements of paragraph (g)(4) of this section shall be provided on the open sides and ends of each landing. Cross braces on tubular welded frame scaffolds shall not be used as a means of access or egress. What are the clearance distance between scaffolds and power lines? In addition, masons' multi-point adjustable suspension scaffold connections shall be designed by an engineer experienced in such scaffold design. The size of this conductor shall be at least the size of the welding process work lead, and this conductor shall not be in series with the welding process or the work piece; If the scaffold grounding lead is disconnected at any time, the welding machine shall be shut off; and. Unstable objects shall not be used as working platforms. Ties, guys, braces, or outriggers shall be used to prevent the tipping of supported scaffolds in all circumstances where an eccentric load, such as a cantilevered work platform, is applied or is transmitted to the scaffold. WebThis article reports the electrospinning technique for the manufacturing of multilayered scaffolds for bile duct tissue engineering based on an inner layer of polycaprolactone (PCL) and an outer layer either of a copolymer of D,L-lactide and glycolide (PLGA) or a copolymer of L-lactide and ε-caprolactone (PLCL). Stairrails shall be not less than 28 inches (71 cm) nor more than 37 inches (94 cm) from the upper surface of the stairrail to the surface of the tread, in line with the face of the riser at the forward edge of the tread. Scaffold components made of dissimilar metals shall not be used together unless a competent person has determined that galvanic action will not reduce the strength of any component to a level below that required by paragraph (a)(1) of this section. 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