When can welding be done from a suspension scaffold? Work on or from scaffolds is prohibited during storms or high winds unless a competent person has determined that it is safe for employees to be on the scaffold and those employees are protected by a personal fall arrest system or wind screens. When acids or other corrosive substances are used on a scaffold, the ropes shall be shielded, treated to protect against the corrosive substances, or shall be of a material that will not be damaged by the substance being used. Cross braces on tubular welded frame scaffolds shall not be used as a means of access or egress. [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. Riser height shall be uniform, within 1/4 inch, (0.6 cm) for each flight of stairs. Treads and landings shall have slip-resistant surfaces. What is the maximum deflection of a platform? Devices whose sole function is to provide emergency escape and rescue shall not be used as working platforms. Stairrail systems and handrails shall be surfaced to prevent injury to employees from punctures or lacerations, and to prevent snagging of clothing. Horizontal lifelines shall not be attached only to the suspension ropes. Our Office Location. Must have rest platforms at 35-foot maximum intervals on all supported scaffolds more than 35 feet high. Kinks that might impair the tracking or wrapping of rope around the drum(s) or sheave(s). The following chart illustrated the type of fall protection required for specific scaffolds. WORKERS MUST USE FALL PROTECTION WHEN WORKING FROM THIS SCAFFOLD Green: SCAFFOLD IS OK FOR USE Tag must include the scaffold capacity: Guardrail height. Fork-lifts shall not be used to support scaffold platforms unless the entire platform is attached to the fork and the fork-lift is not moved horizontally while the platform is occupied. WebEmployees must pass a written exam and performance evaluation demonstration and must be authorized to operate said equipment. Makeshift devices, such as but not limited to boxes and barrels, shall not be used on top of scaffold platforms to increase the working level height of employees. [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. Six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay. [29 CFR 1926.453(b)(2)(v)]. [29 CFR 1926.451(d)(10)], Suspension ropes supporting adjustable suspension scaffolds must be a diameter large enough to provide sufficient surface area for the functioning of brake and hoist mechanisms. Sound anchorages include structural members, but do not include standpipes, vents, other piping systems, or electrical conduit. The training must include fall hazards, falling object hazards, electrical hazards, proper use of the scaffold, and handling of materials. 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. Must have uniform tread depth, within inch, for each flight of stairs. High Quality Steel [29 CFR 1926.451 (b) (2)] Webf. Scaffolding is the solution to many access issues, providing a safe and legal means of access for workers at height. It is recommended above many other means of access, especially if the work will be prolonged or involve multiple workers, tools, equipment or materials. This provision does not preclude the use of common support members, such as "T" sections, to support abutting planks, or hook on platforms designed to rest on common supports. Must be specifically designed and constructed for use as ladder rungs. What are some of the requirements for manually operated suspension scaffold hoists? EQUIPMENT. e) Modified requirements for guardrails. Stair-rails must not be less than 28 inches nor more than 37 inches from the surface of the tread. [. [29 CFR 1926.451(a)(5)], The stall load is the load at which the prime-mover (motor or engine) of a power-operated hoist stalls or the power to the prime-mover is automatically disconnected. Stilts may be used on a large area scaffold. Sound points of anchorage include structural members, but do not include standpipes, vents, other piping systems, or electrical conduit. [29 CFR 1926.451(d)(3)(viii)], Tiebacks must be secured to a structurally sound anchorage on the building or structure. the grounding conductor is not attached in series with the welding process or the work piece. 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. This basically means that the ladder rungs should have sufficient clear space behind them to allow a foot or hand to make sufficient purchase on the rung. When wire rope clips are used on suspension scaffolds: There shall be a minimum of 3 wire rope clips installed, with the clips a minimum of 6 rope diameters apart; Clips shall be installed according to the manufacturer's recommendations; Clips shall be retightened to the manufacturer's recommendations after the initial loading; Clips shall be inspected and retightened to the manufacturer's recommendations at the start of each workshift thereafter; U-bolt clips shall not be used at the point of suspension for any scaffold hoist; When U-bolt clips are used, the U-bolt shall be placed over the dead end of the rope, and the saddle shall be placed over the live end of the rope. Employers are required to provide fall protection for employees erecting or dismantling supported scaffolds where the installation and use of such protection is feasible and does not create a greater hazard. This provision does not preclude the use of systems which are designed to function both as suspension scaffolds and emergency systems. Paragraph (g)(2) of this section addresses fall protection for scaffold erectors and dismantlers. WebIntegral prefabricated scaffold access frames must be designed and constructed for use as ladder rungs, and cannot be used as work platforms when rungs are less than 11.5 inches in Abrasion, corrosion, scrubbing, flattening or peening causing loss of more than one-third of the original diameter of the outside wires. To ensure stability for fall protection, scaffolds can be supported by: legs, Greater variations in riser height are allowed for the top and bottom steps of the entire system, not for each flight of stairs. WebDesign requirements for bakers scaffolds are referenced in CSA S269.2 Access Scaffolding for Construction Purposes. Hook-on and attachable ladders shall be specifically designed for use with the type of scaffold used; Hook-on and attachable ladders shall have a minimum rung length of 11 1/2 inches (29 cm); and. When canopies are used on suspension scaffolds for falling object protection, the scaffold shall be equipped with additional independent support lines equal in number to the number of points supported, and equivalent in strength to the strength of the suspension ropes. Construction materials such as, but not limited to, masonry units and rolls of roofing felt, shall not be used as counterweights. Must have a rung length of at least 8 inches. Vertical lifelines shall not be used when overhead components, such as overhead protection or additional platform levels, are part of a single-point or two-point adjustable suspension scaffold. WebScaffold design. Ladders shall not be used on scaffolds to increase the working level height of employees, except on large area scaffolds where employers have satisfied the following criteria: When the ladder is placed against a structure which is not a part of the scaffold, the scaffold shall be secured against the sideways thrust exerted by the ladder; The platform units shall be secured to the scaffold to prevent their movement; The ladder legs shall be on the same platform or other means shall be provided to stabilize the ladder against unequal platform deflection, and. 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. Guardrails meeting the requirements of paragraph (g)(4) of this section shall be provided on the open sides and ends of each landing. Scaffold components manufactured by different manufacturers shall not be intermixed unless the components fit together without force and the scaffold's structural integrity is maintained by the user. WebAccess: Scaffolds must have an acceptable form of access (e.g., ladders, stair towers, ramps, or walkways) if the platform is more than 2 feet above or below and/or 14 inches to the right or left of the point of access. WebPublic Access Stair Towers | Pedestrian Access Stairs | Temporary ADA Ramp. The end points at each upright shall be no more than 48 inches (1.3 m) apart. Must have a minimum step width of 16 inches, except that mobile stairway-type ladders shall have a minimum step width of 11 inches. 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. Evidence that the secondary brake has been activated during an overspeed condition and has engaged the suspension rope. [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. WebRequirements for Scaffolding Tower Use of Safety Harness Safe place and Safe person strategy You can read regulation of Trakhees, in detail. Zelienople, PA 16063. Handrails, and top-rails used as handrails, must be at least 3 inches from other objects. Scaffolds must be equipped with proper access and may include dual access as necessary. Window cleaners' anchors shall not be used for this purpose. [29 CFR 1926.451(f)(1)] Load carrying timber members should be a minimum of 1,500 lb-f/in2 construction grade lumber. Direct access to or from another surface shall only be used when the scaffold is not more than 14 inches horizontally and 24 inches vertically from the other surface. Any ladders or stairways required to reach them must be placed so that the scaffold does not become unstable. Stair-rails and handrails must be designed and constructed to prevent punctures, lacerations, snagged clothing, and projection. [29 CFR 1926.451(b)(2)], The standard requires employers to protect each employee on a scaffold more than 10 feet (3.1 m) above a lower level from falling to that lower level. [. [29 CFR 1926.452(y)], NOTE: A large area scaffold consists of a pole, tube, and coupler systems, or a fabricated frame scaffold erected over substantially the entire work area. Scaffolds shall not be moved horizontally while employees are on them, unless they have been designed by a registered professional engineer specifically for such movement or, for mobile scaffolds, where the provisions of 1926.452(w) are followed. Fall arrest systems should protect these employees. Fall protection includes guardrail systems and personal fall arrest systems. Two tie-backs installed at opposing angles are required when a perpendicular tieback cannot be installed. A canopy structure, debris net, or catch platform strong enough to withstand the impact forces of the potential falling objects shall be erected over the employees below. How wide does the work area need to be on scaffolding? Sand, gravel and similar materials that can be easily dislocated shall not be used as counterweights. Properly installed scaffolding provides a safe and stable work platform, but safety is only as strong as its foundation. [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. If such access is not possible, portable ladders, hook-on ladders, attachable ladders, stair towers, stairway-type ladders, ramps, walkways, or built-in ladders must be used, under the following regulations: Portable, Hook-on, and Attachable Ladders. Each 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. above the scaffold supporting level. What are scaffold platform construction requirements? 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). [29 CFR 1926.451(f)(11)], Power-operated hoists used to raise or lower a suspended scaffold must be tested by a qualified testing laboratory. Can sand, masonry units, or rolls of roofing felt be used for counterweights? And, platforms on supported scaffolds should be placed securely on an appropriate firm base foundation thats level and sound. [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. [29 CFR 1926.451(d)(7)], Drum hoists must contain no less than four wraps of the rope at the lowest point. Except as provided in paragraphs (b)(3)(i) and (ii) of this section, the front edge of all platforms shall not be more than 14 inches (36 cm) from the face of the work, unless guardrail systems are erected along the front edge and/or personal fall arrest systems are used in accordance with paragraph (g) of this section to protect employees from falling. Access requirements for employees erecting or dismantling supported scaffolds are specifically addressed in paragraph (e)(9) of this section. Paragraphs (g)(1)(i) through (vii) of this section establish the types of fall protection to be provided to the employees on each type of scaffold. 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. Scaffold Safety Scaffolding Training Each end of a platform 10 feet or less in length shall not extend over its support more than 12 inches (30 cm) unless the platform is designed and installed so that the cantilevered portion of the platform is able to support employees and/or materials without tipping, or has guardrails which block employee access to the cantilevered end. 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. Are there requirements for suspension ropes? Ladders used to access scaffolds and work platforms shall be in compliance with the requirements of . Gears and brakes of power-operated hoists used on suspension scaffolds shall be enclosed. 29 CFR 1926 Subpart L Appendix A(1)(b) & (c). Excess suspension wire rope and any additional independent lines from grounding shall be insulated; The suspension wire rope shall be covered with insulating material extending at least 4 feet (1.2 m) above the hoist. Supported scaffold poles, legs, posts, frames, and uprights shall bear on base plates and mud sills or other adequate firm foundation. [29 CFR 1926.451(d)(6)], Gears and brakes must be enclosed. 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. The space must not exceed 9 inches (24.1 cm) when side brackets or odd-shaped structures result in a wider opening between the platform and the uprights. The inboard ends of suspension scaffold outrigger beams shall be stabilized by bolts or other direct connections to the floor or roof deck, or they shall have their inboard ends stabilized by counterweights, except masons' multi-point adjustable suspension scaffold outrigger beams shall not be stabilized by counterweights. Employees shall be prohibited from working on scaffolds covered with snow, ice, or other slippery material except as necessary for removal of such materials. Footings shall be level, sound, rigid, and capable of supporting the loaded scaffold without settling or displacement. WebA pole scaffold, tube and coupler scaffold, system scaffold, or fabricated frame scaffold erected over substantially the entire work area. Must have a maximum space between rungs of 16 inches. [29 CFR 1926.451(g)(1)], To ensure adequate protection, install guardrails along all open sides and ends before releasing the scaffold for use by employees, other than the erection and dismantling crews. On scaffolds where platforms are overlapped to create a long platform, the overlap shall occur only over supports, and shall not be less than 12 inches (30 cm) unless the platforms are nailed together or otherwise restrained to prevent movement. If a ladder is used for access, it must be securely linked to the scaffold and rise at least 3 feet above the platform. This paragraph applies to scaffold access for all employees. Wondering about scaffold guardrail height requirements? DESIGN & ENGINEERING. Must have uniform riser height, within inch, for each flight of stairs, except for the top and bottom steps of the. [29 CFR 1926.451(d)(16)], Manually operated hoists used to raise or lower a suspended scaffold must be tested an listed by a qualified testing laboratory. Scaffolds shall be designed by a qualified person and shall be constructed and loaded in accordance with that design. The ends of all rails shall not overhang the terminal posts except when such overhang does not constitute a projection hazard to employees.