Suspension ropes supporting adjustable suspension scaffolds shall be of a diameter large enough to provide sufficient surface area for the functioning of brake and hoist mechanisms. Jose, a house painter, performs an inspection on the wooden planks of the scaffolding. Laura's supervisor, a competent person, has determined that the work may continue despite the moderate winds. (1) A safe and unobstructed means of access, such as a walkway, stair, or ladder shall be provided to all scaffold platforms. This paragraph applies to scaffold access for all employees. 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. 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. employees performing work from scaffold must be trained on use, maximum load capacity, and electrical hazards. 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. Construction materials such as, but not limited to, masonry units and rolls of roofing felt, shall not be used as counterweights. In addition, masons' multi-point adjustable suspension scaffold connections shall be designed by an engineer experienced in such scaffold design. Select the correct answer and then click DONE. Midrails, screens, mesh, intermediate vertical members, solid panels, and equivalent structural members of a guardrail system shall be capable of withstanding, without failure, a force applied in any downward or horizontal direction at any point along the midrail or other member of at least 75 pounds (333 n) for guardrail systems with a minimum 100 pound toprail capacity, and at least 150 pounds (666 n) for guardrail systems with a minimum 200 pound toprail capacity. A ladder or other safe means of access must be provided. 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. In addition to the normal operating brake, suspension scaffold power-operated hoists and manually operated hoists shall have a braking device or locking pawl which engages automatically when a hoist makes either of the following uncontrolled movements: an instantaneous change in momentum or an accelerated overspeed. 1.24) What type of ladders cannot be used for access to a scaffold? 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). Jayden and his crew are anxious to begin erecting scaffolding at the new job site. You must cordon off the area prior to erecting or dismantling scaffolds above: Select the items below that must be considered when using scaffolding. 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. Select the correct answer and then click DONE. When erecting and dismantling supported scaffolds, the competent person must determine the feasibility of providing a safe means of access and fall protection for these operations. Manually operated hoists shall require a positive crank force to descend. Scaffolding safety is a set of preemptive actions in building, inspecting, using, and tagging scaffolds. Guardrail systems shall be installed before the scaffold is released for use by employees other than erection/dismantling crews. A stairrail consisting of a toprail and a midrail shall be provided on each side of each scaffold stairway. The ladder legs shall be secured to prevent them from slipping or being pushed off the platform. Steps and rungs of ladder and stairway type access shall line up vertically with each other between rest platforms. What is Scaffolding Safety? a TRUE b FALSE 4 A means of access must be provided to a scaffold platform if there is no existing access within____feet of the platform. Must have their bottom step no more than 24 inches above the level on which the scaffold is supported. Cross braces shall not be used as a means of access. 2. Laura and her team are on a deadline to finish a construction project. However, where the employer can demonstrate that it is not possible to place an outrigger beam perpendicular to the face of the building or structure because of obstructions that cannot be moved, the outrigger beam may be placed at some other angle, provided opposing angle tiebacks are used. Select the correct answer and then click DONE. means of access must be provided to scaffold platform if no existing access within ____ feet. Erecting and Dismantling - When erecting and dismantling supported scaffolds, a competent person must determine the feasibility of providing a safe means of access and fall protection for these operations. Ans.) Toeboards shall be securely fastened in place at the outermost edge of the platform and have not more than 1/4 inch (0.7 cm) clearance above the walking/working surface. Cross braces shall not be used as a means of … 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. Guardrail systems installed to meet the requirements of this section shall comply with the following provisions (guardrail systems built in accordance with Appendix A to this subpart will be deemed to meet the requirements of paragraphs (g)(4)(vii), (viii), and (ix) of this section): Guardrail systems shall be installed along all open sides and ends of platforms. The weather has been an issue and has pushed the project back. Select the correct answer and then click DONE. Must have a stair-rail, consisting of a top-rail and a mid-rail, on each side. Scaffolds are commonly used in construction work so workers have a safe, stable work platform when work cannot be done at ground level or on a finished floor. The team has been unable to work on the project due to heavy rain over the last two days. Non-mandatory Appendix A to this subpart contains examples of criteria that will enable an employer to comply with paragraph (a) of this section. The scaffolding components are clearly from various manufacturers. 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. Scaffolds and scaffold components shall be inspected for visible defects by a competent person before each work shift, and after any occurrence which could affect a scaffold's structural integrity. G. WHEN SCAFFOLDS ARE TO BE PARTIALL OR FULLY ENCLOSED, specific precautions must be taken to assure 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. Toeboards shall be solid or with openings not over one inch (2.5 cm) in the greatest dimension. Debris shall not be allowed to accumulate on platforms. At least three and one-half inches (9 cm) high from the top edge of the toeboard to the level of the walking/working surface. 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. 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. Steel or plastic banding shall not be used as a toprail or midrail. The scaffolding platform will be 32 inches from the ground. 8.1.7 Overhead protection must be provided for personnel on a scaffold exposed to overhead hazards. An active welding rod or uninsulated welding lead shall not be allowed to contact the scaffold or its suspension system. When intermediate members (such as balusters or additional rails) are used, they shall not be more than 19 inches (48 cm) apart. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Exception to paragraph (b)(1): The requirement in paragraph (b)(1) to provide full planking or decking does not apply to platforms used solely as walkways or solely by employees performing scaffold erection or dismantling. Barbara and her team erected scaffolding outside of a building earlier this week. 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. Riser height shall be uniform, within 1/4 inch, (0.6 cm) for each flight of stairs. Select the correct answer and then click DONE. Should he use those planks? Cross braces on tubular welded frame scaffolds shall not be used as a means of access or egress. 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. Except to remove such material, employees must not work on scaffolds covered in: What is the minimum safe approach distance for you to maintain from overhead power lines to avoid electrical hazards when working on scaffolding? 1926.451(e)(1) Direct access is acceptable when the scaffold is not more than 14 inches (36 centimeters) horizontally and not more than 24 … Outrigger beams shall be placed perpendicular to its bearing support (usually the face of the building or structure). Under the model WHS Act, the scaffold is classified as a structure. Devices whose sole function is to provide emergency escape and rescue shall not be used as working platforms. This inspection by the Competent Person must take place when the scaffold is erected or moved, as well as prior to initial use on each shift; When scaffold platforms are located more than 2 feet above or below the ground or other point of access, access to the scaffold platform must be made via an approved means. The stall load of any scaffold hoist shall not exceed 3 times its rated load. A toeboard shall be erected along the edge of platforms more than 10 feet (3.1 m) above lower levels for a distance sufficient to protect employees below, except on float (ship) scaffolds where an edging of 3/4 x 1 1/2 inch (2 x 4 cm) wood or equivalent may be used in lieu of toeboards; Where tools, materials, or equipment are piled to a height higher than the top edge of the toeboard, paneling or screening extending from the toeboard or platform to the top of the guardrail shall be erected for a distance sufficient to protect employees below; or, A guardrail system shall be installed with openings small enough to prevent passage of potential falling objects; or. 3 A saw must be guarded with a semicircular enclosure over the blade. Select all that apply and then click DONE. This determination shall be based on site conditions and the type of scaffold being erected or dismantled. This type of scaffold requires ramps, ladders, walkways or similar means of access when suspended more than 24 inches. Crossbracing is acceptable in place of a midrail when the crossing point of two braces is between 20 inches (0.5 m) and 30 inches (0.8 m) above the work platform or as a toprail when the crossing point of two braces is between 38 inches (0.97 m) and 48 inches (1.3 m) above the work platform. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Scaffolds and scaffold components shall not be loaded in excess of their maximum intended loads or rated capacities, whichever is less. a Lap must not be 40 times the diameter b 40" c 48" d Must refer to engineering specification 4 A means of access must be provided to a scaffold platform if there is no existing access within____feet of the platform. 16 3/4 inches. When midrails are used, they shall be installed at a height approximately midway between the top edge of the guardrail system and the platform surface. Proper access must be provided to access the work platform of the scaffold. Portable, hook-on, and attachable ladders (Additional requirements for the proper construction and use of portable ladders are contained in subpart X of this part -- Stairways and Ladders): Portable, hook-on, and attachable ladders shall be positioned so as not to tip the scaffold; Hook-on and attachable ladders shall be positioned so that their bottom rung is not more than 24 inches (61 cm) above the scaffold supporting level; When hook-on and attachable ladders are used on a supported scaffold more than 35 feet (10.7 m) high, they shall have rest platforms at 35-foot (10.7 m) maximum vertical intervals. How high must the top guardrail [ 29 CFR 1926.451 (e) (9) and 29 CFR 1926.451 (g) (2)] Except as provided in paragraphs (b)(2)(i) and (b)(2)(ii) of this section, each scaffold platform and walkway shall be at least 18 inches (46 cm) wide. A domestic grade (or non-industrial grade) ladder; An extension ladder; A step ladder; 1.25) What is the maximum height allowed between ladder landings? What must be worn at all times while working from scaffolding? Start studying Scaffold Section 1928.450. Supported scaffold poles, legs, posts, frames, and uprights shall be plumb and braced to prevent swaying and displacement. Tiebacks shall be installed perpendicular to the face of the building or structure, or opposing angle tiebacks shall be installed. 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. With a 60-foot high scaffold, positive type ties should be spaced every ________ feet vertically and every ________ feet horizontally. Select all that apply and then click DONE. When the loads specified in paragraph (g)(4)(vii) of this section are applied in a downward direction, the top edge shall not drop below the height above the platform surface that is prescribed in paragraph (g)(4)(ii) of this section. 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. To avoid injury while moving from one platform to another, you should. Such guys, ties and braces shall be installed at each end of the scaffold and at horizontal intervals not to exceed 30 feet (9.1 m) (measured from one end [not both] towards the other). Have a maximum spacing between rungs of 16 3/4 inches (43 cm). Any part of a scaffold damaged or weakened such that its strength is less than that required by paragraph (a) of this section shall be immediately repaired or replaced, braced to meet those provisions, or removed from service until repaired. Crossbraces shall not be used as a means of access. Type of accesses which are permitted: Select the correct answer and then click DONE. 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. When accessing a platform that is more than 24 inches above or below another platform, ground, or floor that you're coming from, safe access must be provided. Tread depth shall be uniform, within 1/4 inch, for each flight of stairs. Capable of withstanding, without failure, a force of at least 50 pounds (222 n) applied in any downward or horizontal direction at any point along the toeboard (toeboards built in accordance with Appendix A to this subpart will be deemed to meet this requirement); 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. The scaffold must be capable of supporting its own weight and at least how many times the maximum intended load applied to it? Employers must provide access when the scaffold platforms are more than 2 feet (0.6 meters) above or below a point of access. Safe points of anchorage include structural members of buildings, but do not include standpipes, vents, other piping systems, electrical conduit, outrigger beams, or counterweights. Scaffold components manufactured by different manufacturers shall not be modified in order to intermix them unless a competent person determines the resulting scaffold is structurally sound. 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. In general, scaffolds fall into one of two categories Select the correct answer and then click DONE. Platforms must be- fully planked or decked with no more then 1 inch gaps The top edge height on supported scaffolds manufactured and placed in service before January 1, 2000, and on all suspended scaffolds where both a guardrail and a personal fall arrest system are required shall be between 36 inches (0.9 m) and 45 inches (1.2 m). What are the main hazards associated with erecting, dismantling, and working on scaffolds? Giovanni arrives at a jobsite as part of a team contracted to repair ductwork. 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. • Employees working on scaffolding more than 10 feet above ground or a lower level must be equipped with a personal fall arrest system and/or guardrail. He notices that there have been several large spills of paint over them. Heat damage caused by a torch or any damage caused by contact with electrical wires. Select the correct answer and then click DONE. Six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay. Select the correct answer and then click DONE. When horizontal lifelines are used, they shall be secured to two or more structural members of the scaffold, or they may be looped around both suspension and independent suspension lines (on scaffolds so equipped) above the hoist and brake attached to the end of the scaffold. Select all that apply and then click DONE. The team is given a set of scaffolding components to assemble. This section does not apply to aerial lifts, the criteria for which are set out exclusively in 1926.453. The use of shore or lean-to scaffolds is prohibited. If the platform is over 10 feet, it cannot exceed how many inches over the centerline support? Sound anchorages include structural members, but do not include standpipes, vents, other piping systems, or electrical conduit. Scaffolds shall be erected, moved, dismantled, or altered only under the supervision and direction of a competent person qualified in scaffold erection, moving, dismantling or alteration. 3) Access work platforms using safe convenient methods. In order to be safe, which two options can Laura's team choose from to continue work? The ground where he needs to place the footing is dry but uneven in spots. F. ON WALL SCAFFOLDS PLACE AND MAINTAIN ANCHORS securely between structure and scaffold at least every 30” of length and 26” of height. 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. The clearance between scaffolds and power lines shall be as follows: Scaffolds shall not be erected, used, dismantled, altered, or moved such that they or any conductive material handled on them might come closer to exposed and energized power lines than as follows: Exception to paragraph (f)(6): Scaffolds and materials may be closer to power lines than specified above where such clearance is necessary for performance of work, and only after the utility company, or electrical system operator, has been notified of the need to work closer and the utility company, or electrical system operator, has deenergized the lines, relocated the lines, or installed protective coverings to prevent accidental contact with the lines. Greater variations in riser height are allowed for the top and bottom steps of the entire system, not for each flight of stairs. Window cleaners' anchors shall not be used for this purpose. 1. 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. https://quizlet.com/432494608/scaffolding-safety-flash-cards A means of access must be provided when the scaffold platform is more than how many feet above or below a point of access? 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). 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. Access shall be provided to scaffold systems when the distance to/from the platform is _____ inches or greater. Select the correct answer and then click DONE. 1926.452(c)(6) Scaffolds over 125 feet high above the base plates must be designed by a registered professional engineer and constructed and loaded per the design. Paragraph (g)(2) of this section addresses fall protection for scaffold erectors and dismantlers. Ramps and walkways _______ feet or more above lower levels must have guardrail systems. Getting to know what access scaffolding is and the benefits it has to offer can help you determine if access scaffolding is the right choice for your worksite needs.At United Scaffold Supply, we want to help you select the best scaffolding for the job.That is why we carry a wide selection of different scaffolding equipment, such as access scaffolding. All employees working off scaffolding shall be trained in the hazards associated with that type of scaffolding. Select all that apply and then click the DONE button. Gasoline-powered equipment and hoists shall not be used on suspension scaffolds. When conditions warrant, the height of the top edge may exceed the 45-inch height, provided the guardrail system meets all other criteria of paragraph (g)(4). Scaffolds: a definition Scaffold—a temporary structure erected to support access or working platforms. The top edge height of toprails or equivalent member on supported scaffolds manufactured or placed in service after January 1, 2000 shall be installed between 38 inches (0.97 m) and 45 inches (1.2 m) above the platform surface. Each platform greater than 10 feet in length shall not extend over its support more than 18 inches (46 cm), unless it is designed and installed so that the cantilevered portion of the platform is able to support employees without tipping, or has guardrails which block employee access to the cantilevered end. In addition to meeting the requirements of 1926.502(d), personal fall arrest systems used on scaffolds shall be attached by lanyard to a vertical lifeline, horizontal lifeline, or scaffold structural member. Out exclusively in 1926.453 to support access or egress a separate handrail is provided ) in greatest... Sections 21 and 24. a members, but do not include standpipes, vents, other piping systems, electrical... 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