Choose one answer. . Light metal-type platforms having a rated capacity of 750 pounds or less and platforms 40 feet (12.2 m) or less in length shall be tested and listed by a nationally recognized testing laboratory. Clipping is a handy way to collect important slides you want to go back to later. (b) Tube and Coupler Scaffolds. Cleats and overhang are not considered to be adequate means of attachment. Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. ( 1) Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. USA (v. 2008) 2 Topics of DiscussionTopics of Discussion AwarenessAwareness Types of ScaffoldingTypes of Scaffolding Scaffolding BasicsScaffolding Basics Erecting ScaffoldsErecting Scaffolds Inspection ofInspection of ScaffoldsScaffolds Do's and Don'tsDo's and Don'ts Photo of Engelmann Gym scaffold (under construction, fall 2005)Photo of . Employees are prohibited from working above other employees on the face of a sloped or benched excavation unless: Workers on lower level have overhead protection from falling objects. Scaffold erection shall progress in only one direction around any structure. Ensure that all scaffold parts are inspected before use to ensure they are in good repair and suitable for use. The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. Erecting Scaffolding Safely. Scaffolds and components must be able to support at least four times the intended load. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. All vehicles used for the transportation of explosives shall have tight floors, and any exposed spark-producing metal on the inside of the body shall be: Covered with wood or other non-sparking material. Cyber Awareness Challenge 2022 Answers And Notes. Personal Fall Arrest System. Many precautions must be taken before scaffolding work can commence. 9. Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. for construction, the agency estimated that by protecting these millions of workers from When a wire rope is placed around the structure in order to provide a safe anchorage for personal fall arrest systems used by employees erecting or dismantling scaffolds, the wire rope shall meet the requirements of subpart M of this part, but shall be at least 5/16 inch (0.8 cm) in diameter. missing parts due to area obstructions). 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. Ladders used to support ladder jacks shall be placed, fastened, or equipped with devices to prevent slipping. Frequently used types of scaffolds include the 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). Let us know about it through the REPORT button at the bottom of the page. When balancing a chemical equation. 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 Scaffold components. Step 1 Select and prepare the ground area. Pole scaffolds over 60 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with that design. Which industries are employees potentially exposed to silica dust: Anytime an adapter is used to accommodate a two-hole receptacle, the adapter wire must: 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). When horses are arranged in tiers, each tier shall be crossbraced. 1926.452 (c) (4) 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. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? Using cranes to hoist material can have serious consequences if the process is not performed properly. When horses are arranged in tiers, the legs of each horse shall be nailed down or otherwise secured to prevent displacement. that construction workers use for working safely at elevations. According to OSHA standard 1926.451 (g) (1), anyone working on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. For example, if lumber is used, it must be construction grade or Number 1 Grade spruce. 25. 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. All brace connections must be secured. The scaffold must rest on a firm foundation, be plumb and braced to prevent swaying. Electric shock occurs when: Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? Diagonal bracing in both directions shall be installed across the entire outside face of all double- and single-pole scaffolds. 1926.452 (c) (3) Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. which of the following statements is false? Nothing should lean in any direction. When wood poles are constructed of two continuous lengths, they shall be joined together with the seam parallel to the bracket. Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. 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. improper grounding of circuitry and equipment. There are several important scaffolding design guidelines and safety rules that pertain to working on a scaffold: Guardrails and/or fall arrest systems are mandatory when working over 10 feet up. B. Position the first level of bracing as close to the base as possible. There are an estimated $90 million dollars lost because of . 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 Looks like youve clipped this slide to already. We thoroughly check each answer to a question to provide you with the most correct answers. Bracing shall extend diagonally from the inner or outer posts or runners upward to the next outer or inner posts or runners. Every scaffold must be erected by qualified technicians based on the information in the design drawings. Fasten all couplers and/or connections securely before assembling the next level . The following are the phases that need to be considered for safe installation and use of scaffolding: 1. Scaffolding is used for renovations, construction, maintenance, installations, and much more. The entire supporting structure shall be securely braced to prevent any horizontal movement. Materials being hoisted onto a scaffold must Scaffolds are a type of temporary work platform that is used to support workers, tools and materials. Brackets (including those provided with pointed metal projections) shall be anchored in place by nails unless it is impractical to use nails. What happens to the temperature of the water relative to that of the untreated water? When platforms are being moved to the next level, the existing platform shall be left undisturbed until the new bearers have been set in place and braced, prior to receiving the new platforms. Extreme weather or damage to structural components can also affect a scaffold's stability. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal Other common components are scaffold boards and edge protection. You can read the details below. The blocks for fiber or synthetic ropes shall consist of at least one double and one single block. Faults: Damaged. 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. 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. Do not abuse or misuse the scaffold equipment. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. OSHA 1926.454(c) states: When an employer has 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. The checks above are common scaffolding faults to look out for that show you the scaffold structure is unsafe. Save my name, email, and website in this browser for the next time I comment. B. Employers must provide employees with effective information and training on hazardous chemicals in their work area: At the time of their initial assignment. The following examp le is based on building a scaffold that is 2.1 x 1.5 m (7 x 5 ft.) x 1 frame high. Scaffolds must be plumb, level, and squared. Cross-bracing is required on both front and back sides of each scaffold buck or frame. AEGCPs are implemented on construction sites to oversee: The OSHA standard mandates that any time a worker is at a height of six feet or more, the worker is at risk and needs to be protected. Plan the scaffolding setup a few weeks before the start of the project to make sure the scaffold fits the site. An access ladder or equivalent safe access must be provided. Additional requirements applicable to specific types of scaffolds. 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