Posts must be accurately spaced, erected on suitable bases, and maintained plumb. scaffold are exposed, and describe at least one method of hazard prevention for Materials being hoisted onto a scaffold must Place suitable sills and make sure there are no holes under the sills. The following are the phases that need to be considered for safe installation and use of scaffolding: 1. Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. job, and he shouldhis life depends on it. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. 1926.451(a)(1) and (3) TrainingEmployers must train each employee who works on a scaffold on the hazards and the procedures to control the hazards. A scaffold is a temporary structure specifically erected to support access or working platforms. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Audiometric testing monitors an employees hearing: Acute silicosis occurs after a few months or as long as 2 years following exposures to ________ concentrations of respirable crystalline silica. 4. Free access to premium services like Tuneln, Mubi and more. Before a scaffold is moved, each employee on the scaffold shall be made aware of the move. Screw jacks must be used to level scaffolding on uneven surfaces with a maximum extension for a screw jack of 12 inches. In 1996, when OSHA issued the revised Scaffold Standard Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. Scaffolding is used for renovations, construction, maintenance, installations, and much more. A scaffold should always be erected: Choose one answer. C. Always use a PFAS when working over an unguarded or uncovered opening more than six feet above a lower level We've encountered a problem, please try again. Cyber Awareness Challenge 2022 Answers And Notes. When horses are arranged in tiers, the legs of each horse shall be nailed down or otherwise secured to prevent displacement. Save my name, email, and website in this browser for the next time I comment. Pump jack brackets, braces, and accessories shall be fabricated from metal plates and angles. The three main scaffold types are aerial lifts, supported scaffolds and: suspended scaffolds 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 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 It provides a safe and stable platform for workers. What the definition of a Suspension scaffolds, one or more platforms suspended by ropes or other non rigid means from an overhead structure. Personal Fall Arrest System. The upper tiers shall stand on a continuous row of planks laid across the next lower tier, and shall be nailed down or otherwise secured to prevent displacement. The employer shall ensure that materials shall not be dropped to the outside of the supporting structure. Cleats and overhang are not considered to be adequate means of attachment. Power systems used to propel mobile scaffolds shall be designed for such use. Scaffold platforms shall not be bridged one to another. [3] Lift the planks through the scaffold bars and into place. C. Both A and B All brace connections shall be secured. Wire ropes shall not be tightened to the extent that the application of a scaffold load will overstress them. Any part of a building or structure used to support the scaffold shall be capable of supporting the maximum intended load to be applied. When erected scaffolds are to be moved by crane assure that: a. disadvantages. 1. Supported scaffold poles, legs . Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. 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. 5. What the percentage of the construction industry that work on scaffold, Most scaffolds at jobsites are made of what type of material, What are the most frequently used types of scaffolds, The first step in building a scaffold includes a site inspection to do identify what. 2. each of the hazards. C. Wear goggles or safety spectacles Resist penetration by objects and absorb the shock of a blow. uses. Each pump jack bracket shall have two positive gripping mechanisms to prevent any failure or slippage. Scaffolding work means the erection, alteration and dismantling of a scaffold. 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. Brackets used to support cantilevered loads shall: Be seated with side-brackets parallel to the frames and end-brackets at 90 degrees to the frames; Not be bent or twisted from these positions; and. bamboo sticks are still used in some Asian countries to erect large multistory structures. Scaffolds have been around for thousands of years, and there are myriad types and As an example, even in this day of steel and iron, scaffolds made from Employers must provide a training program that teaches employees who might be exposed to fall hazards: How to recognize such hazards and how to minimize them. Each wire rope used for securing brackets in place or as an anchorage for personal fall arrest systems shall be protected from damage due to contact with edges, corners, protrusions, or other discontinuities of the supporting structure or scaffold components. Wood splice plates shall be provided on at least two adjacent sides, and shall extend at least 2 feet (0.6 m) on either side of the splice, overlap the abutted ends equally, and have at least the same cross-sectional areas as the pole. A scaffold must be erected "plumb, square, and level," starting with the first bay of the scaffold, because every degree that the scaffold is off level will be magnified as the scaffold is raised in height. This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. Bearers must extend a minimum of 3 inches over the outside edge of runners. There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. Cross braces must keep the scaffold plumb, level, and square; All brace connections must be secured to prevent dislodging; Frames and panels must be joined together vertically by coupling or stacking pins or equivalent means; Frames and panels must be locked together to prevent uplift (separation of a "Fabricated frame scaffolds" (tubular welded frame scaffolds). 7. General. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. D. All of the above. In addition to this human savings, working safely on scaffolds also Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Ensure the surface on which the scaffold will be erected is firm, level and capable of Knowing DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. When guardrails are used for fall protection, a workbench may be used as the toprail only if it meets all the requirements in paragraphs (g)(4)(ii), (vii), (viii), and (xiii) of 1926.451. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: A. A training program to teach proper lifting techniques should cover: A. Scaffolding must not be placed on unstable objects, such as bricks or blocks. Tensioning of each wire rope used for securing brackets in place or as an anchorage for personal fall arrest systems shall be by means of a turnbuckle at least 1 inch (2.54 cm) in diameter, or by equivalent means. Guard or securely cover all holes created or uncovered before leaving a work area Every degree that the scaffold is off leveled will be magnified as the scaffold is raised in height. The support connection shall be arranged so as to prevent the needle beam from rolling or becoming displaced. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Answer: Those who ( sell or) rent it many times have calculator app or XLS file for it to do that math. There might be one pair of protective eyewear for your task or station, rather than individual eyewear for each employee. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Extreme weather or damage to structural components can also affect a scaffold's stability. When poles are made of wood, the pole lumber shall be straight-grained, free of shakes, large loose or dead knots, and other defects which might impair strength. Simple pretensioned beams and slabs of spans up to about 7 meters (23 feet): Can be demolished in a manner similar to ordinary reinforced concrete, True or False: Electrical detonators can be inadvertently triggered by stray RF (radio frequency) signals from two-way radios. Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor Bracing shall extend diagonally from the inner or outer posts or runners upward to the next outer or inner posts or runners. Cross-bracing is required on both front and back sides of each scaffold buck or frame. A scaffold is a temporary structure that supports access or working platforms. PLUMB/LEVEL/SQUARE. The mission of the Occupational Safety and Health Administration (OSHA) is: A. Safety nets must be strong enough to support workers who fall, and must: Have small enough mesh openings that employee doesnt fall through net itself. Ropes or hangers shall be used for supports, except that one end of a needle beam scaffold may be supported by a permanent structural member. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. Most of these incident happen because of improper erection of the scaffold, inappropriate use by workers and the lack of inspection and maintenance of the scaffold after it has been erected. Do Not Try To Drive More Than______Hours In Any One Day. missing parts due to area obstructions). Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. Scaffolding refers to the plant components and materials that, when assembled, form a scaffold. And workers must be trained by a qualified person before they use the scaffold. Because of this, the following is required: A certified crane operator must be used. This process is known as: OSHA requires that many categories of PPE meet or be equivalent to standards developed by: The American National Standards Institute (ANSI). Add several tablespoons of table salt to one cup and stir. SCAFFOLDS MUST BE ERECTED IN ACCORDANCE WITH DESIGN AND/OR MANUFACTURERS' RECOMMENDATIONS.