Personal Fall Arrest System. a. Just a few example you can find fast on the interwebs, NFI . Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. The ladder must extend 1 m (3 ft.) above the landing. The following are the phases that need to be considered for safe installation and use of scaffolding: 1. A scaffold must be erected "plumb, square, and level," because: Answer: If a scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift, potentially causing the overloading of one leg and the eventual collapse of the scaffold Electricity travels in closed circuits, and its normal route is through a conductor. The first step in building a scaffold is to: A scaffold must be erected plumb, square, and level, because: If a scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift, potentially causing the overloading of one leg and the eventual collapse of the scaffold. Scaffolding means a convenient platform for persons to work at height. Platform units shall be securely attached to the needle beams by bolts or equivalent means. OSHA promulgated the Final Rule for Powered Industrial Truck Operator Training [29 CFR 1910.178(1)], which: Requires operator training and licensing as well as periodic evaluations of operator performance. Manual force used to move the scaffold shall be applied as close to the base as practicable, but not more than 5 feet (1.5 m) above the supporting surface. D. Stop using the tool, A. Make sure the scaffold is stable. Add lukewarm water to two plastic cups. Ensure the scaffold has not been compromised by snow or ice conditions. Each bracket shall be attached to the securing wire rope (or ropes) by a positive locking device capable of preventing the unintentional detachment of the bracket from the rope, or by equivalent means. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Every degree that the scaffold is off leveled will be magnified as the scaffold is raised in height. At holes, guardrail systems must be set up: The top edge of a guardrail must be from 39 to 45 inches above the walking/working level, and there must also be a means of protection from: Falling objects between top rail and walking surface. Your lines should be perfectly vertical (plumb) and horizontal (level), and your corners should be exactly 90 degrees (square). Damaged or deteriorated equipment must not be used USA (v. 2008) 21 Erecting Scaffolding Erect plumb, square and rigid with all brace connections securely fastened USA (v. 2008) 22 Tubular Welded-frame Scaffolds Be sure scaffold stays plumb and level as erection progresses For mobile scaffolds, use a horizontal diagonal brace, for A scaffold is a temporary structure specifically erected to support access or working platforms. of first grade manila rope. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. You might get some help from www.HelpWriting.net Success and best regards! Provide guards on power tools and other equipment with moving parts. proper measures to protect against or prevent accidents and injuries. Be placed on a firm foundation and be uniformly level within 1 percent of level grade 1926.452 (c) (3) Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. Tube and coupler scaffolds over 125 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. Scaffolding work means the erection, alteration and dismantling of a scaffold. Scaffolds have been around for thousands of years, and there are myriad types and The inboard ends of outrigger beams shall be securely anchored either by means of braced struts bearing against sills in contact with the overhead beams or ceiling, or by means of tension members secured to the floor joists underfoot, or by both. The scaffold must be erected with cross, horiz ontal, or diagonal braces, or combination. There are an estimated $90 million dollars lost because of . Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? Scaffolds must be plumb, level, and squared. All joints must be And workers must be trained by a qualified person before they use the scaffold. Apr. Knowing The bottom runners and bearers shall be located as close to the base as possible. Platforms supported by wire ropes shall have hook-shaped stops on each end of the platforms to prevent them from slipping off the wire ropes. Chicken Ladder. "Plasterers', decorators', and large area scaffolds." The two steps for avoiding hazards that are always taken before the need for PPE is considered are: A. improper grounding of circuitry and equipment. Folding type metal brackets, when extended for use, shall be either bolted or secured with a locking-type pin. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: The three main scaffold types are aerial lifts, supported scaffolds and: Because using cranes or derricks to hoist personnel poses a serious risk to the employees being lifted, any cranes and derricks that hoist personnel must: Be placed on a firm foundation and be uniformly level within 1 percent of level grade. a. 7. Answer: Those who ( sell or) rent it many times have calculator app or XLS file for it to do that math. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. A scaffold should always be erected: Choose one answer. 6. It appears that you have an ad-blocker running. Outrigger scaffolds are 3 inches or less from the front edge An employee may wear stilts on a scaffold only if it is a large area scaffold. This means guardrails, a personal fall arrest system or both, depending on the situation. The SlideShare family just got bigger. Ensure the surface on which the scaffold will be erected is firm, level and capable of All explosives must be accounted for at all times, and all not being used must be kept in a: OSHAs Hazard Communication Standard (HazCom) is designed to ensure that information about __________and associated protective measures is disseminated. Use of fall protection above 10 feet. potential hazards that employers and workers need to be aware of so they can take the Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. Employees are plastering an lathing 18 inches or less from the front of the edge, What type of scaffolds you should not use, What is another don't that you should remember, Not to load scaffolds or scaffold components in excess of their maximum intended loads or rated capacities, which ever is less, OSHA 1926.454 (c) states: when an employer gas reason to believe that an employee lacks the skill or understanding needed for safe work involving the erection, use or dismantling of scaffolds, the employer shall, Retrain each such employee so that the requisite proficiency is regained, Tube and coupler scaffolds over 125 feet high must be designed by, What type of scaffold other than the tube and coupler scaffold- is ideal for use around complex structures, This scaffold is simply a rope attached to a harness with an assembly like a boatswain's chair for the worker to sit in, If a worker on a scaffold can fall more than 10 feet, they must be protected by guardrails and or personal fall arrest systems(PFAS).The type of fall protection required will depend upon, Final Exam OSHA 10 hour construction program, Introduction to Chemical Engineering Thermodynamics, Hendrick Van Ness, J.M. Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should: Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal. work on scaffolds frequently. ( e) Bricklayers' square scaffolds (squares). Do not erect, dismantle or alter a scaffold unless under the supervision of a competent person. Appropriate fall protection may be required by the competent person for such activities or where the scaffolding is considered incomplete (i.e. Add several tablespoons of table salt to one cup and stir. "Fabricated frame scaffolds" (tubular welded frame scaffolds). No more than one platform shall be placed between consecutive vertical pickups, and no more than two platforms shall be used on a catenary scaffold. The scaffold must be erected and used in accordance with OSHA regulations. The ropes shall be securely attached to the needle beams. Each supporting rope shall be hitched around one end of the bearer and pass under the platform to the other end of the bearer where it is hitched again, leaving sufficient rope at each end for the supporting ties. Where leveling of the scaffold is necessary, screw jacks or equivalent means shall be used. Because using cranes or derricks to hoist personnel poses a serious risk to the employees being lifted, any cranes and derricks that hoist personnel must: A. When nails are not used, brackets shall be secured in place with first-grade manila rope of at least three-fourth inch (1.9 cm) diameter, or equivalent. Boatswains' chair tackle shall consist of correct size ball bearings or bushed blocks containing safety hooks and properly "eye-spliced" minimum five-eighth (5/8) inch (1.6 cm) diameter first-grade manila rope, or other rope which will satisfy the criteria (e.g., strength and durability) of manila rope. CapacityScaffolds and scaffold components must support at least 4 times the maximum intended load. Most fatalities, however, happen when workers fall from: Employers must ensure that all walking and working surfaces have the structural integrity to: Controlled access zones serve a dual purpose they allow specially trained individuals (such as masons) to operate without traditional fall protection within a certain area, and: A system used to arrest a worker in a fall from a working level that consists of an anchorage, connectors, a body belt or body harness, and may include a lanyard, deceleration device, lifeline, or suitable combinations of these is called a: When no other alternative fall protection has been implemented, the employer shall implement a safety monitoring system. Forklifts, trucks, similar motor vehicles or add-on motors shall not be used to propel scaffolds unless the scaffold is designed for such propulsion systems. Move the personnel platform slowly and cautiously and have a rotation-resistant rope with a safety factor of 10 Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor OSHA MODULE 5 Scaffolds e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor. Splice plates of other materials of equivalent strength may be used. Extreme weather or damage to structural components can also affect a scaffold's stability. B. A staging area is available. Boatswains' chair seat slings shall be reeved through four corner holes in the seat; shall cross each other on the underside of the seat; and shall be rigged so as to prevent slippage which could cause an out-of-level condition. B. The fulcrum point of outrigger beams shall rest on secure bearings at least 6 inches (15.2 cm) in each horizontal dimension. Warped. ", "Step, platform, and trestle ladder scaffolds. When the pump jack has to pass bracing already installed, an additional brace shall be installed approximately 4 feet (1.2 m) above the brace to be passed, and shall be left in place until the pump jack has been moved and the original brace reinstalled. Plumb and level all scaffolds as the erection proceeds. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. Brackets (including those provided with pointed metal projections) shall be anchored in place by nails unless it is impractical to use nails. Scaffolding, 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. when do Falls from scaffolds most likely occur, Guards rails must have a minimum height of _______and they must be installed where, 38 inches and along the open sides and ends of a scaffold, Guardrails are not needed on the fromt ( building side) of the scaffold when, 1. the front end of all platforms is less than 14 inches from the face of the work A training program to teach proper lifting techniques should cover: A. Personnel hoisting platforms must be designed by: A qualified engineer, or another competent specialist qualified in structural design. Any part of a building or structure used to support the scaffold shall be capable of supporting the maximum intended load to be applied. Install a suitable means of access, such as a sloping or vertical ladder secured to the scaffold at the landing point. Wooden bracket-form scaffolds shall be an integral part of the form panel. The supporting rope between the scaffold and the suspension device shall be kept vertical unless all of the following conditions are met: The rigging has been designed by a qualified person, and, The scaffold is accessible to rescuers, and, The supporting rope is protected to ensure that it will not chafe at any point where a change in direction occurs, and. Hot wires, ungrounded wires that can cause a shock if you touch them, are usually: More than 50 percent of electrocutions are caused by a worker coming in direct contact with: The OSHA standard requires flexible cords to be rated for: What is the most frequent violation of OSHA electrical standards? PLUMB/LEVEL/SQUARE. Electrical burns are the most serious of the three major types of burns, and most often occur: On the hands, from direct contact with current. When moving platforms to the next level, the existing platform shall be left undisturbed until the new end frames have been set in place and braced prior to receiving the new platforms. A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. Uplift might be caused by the action of wind on a secured deck or by the leverage action of a cantilever side bracket on the scaffold. Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity? (w) of appendix A to this subpart; "Stilts." Non-cross-laminated wood boatswains' chairs shall be reinforced on their underside by cleats securely fastened to prevent the board from splitting. Smith, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. Erectors should inspect all scaffold parts before use, and be checking for what, Cracks, dents, bends, breaks , corrosion and bad welds, Each platform more than 10 feet long should not extend more than how many inches over the support, to conduct a site inspection to identify site specific hazards not identified in the preplanning stage and note any other site specific characteristics, Plumb, square, and level starting with the first bay of the scaffold, What will happen if the scaffold is off leveled. When balancing a chemical equation. Scaffolding in this Guide means the individual components, for example tubes, couplers By definition a scaffold is a temporary, elevated platform The posts shall not be spaced more than 2.0 Mtrs. A ground-fault circuit interrupter (GFCI) protects workers from shock by: Matching the amount of current going into an electrical device against the amount returning from the device and shutting down power if a ground fault is detected. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. . Cyber Awareness Challenge 2022 Answers And Notes. Identify site specific hazards not identified in the preplanning stage. Bearers must extend a minimum of 3 inches over the outside edge of runners. Unsafe scaffolding has the potential to result in death or serious . As a general rule, a scaffold becomes inherently unstable once its height is four times its minimum base dimension, even if it is plumb and square. 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