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: A. Tubular scaffolds Cross-bracing is required on both front and back sides of each scaffold buck or frame. Which of these is required if the workers body, hands or clothing may come into contact with moving parts? Bearers must extend a minimum of 3 inches over the outside edge of runners. Rope connections shall be such that the platform cannot shift or slip. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Remote detonators to implode a structure Scaffold casters and wheels shall be locked with positive wheel and/or wheel and swivel locks, or equivalent means, to prevent movement of the scaffold while the scaffold is used in a stationary manner. Transverse bracing forming an "X" across the width of the scaffold shall be installed at the scaffold ends and at least at every third set of posts horizontally (measured from only one end) and every fourth runner vertically. Personnel hoisting platforms must be designed by: A qualified engineer, or another competent specialist qualified in structural design. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. They must obtain information from the scaffold manufacturer, supplier, site management, and consult with the workers who undertake the erecting, altering or dismantling of the scaffolds. (Do not use insulating Styrofoam cups.) Surfaces on which stilts are used shall be flat and free of pits, holes and obstructions, such as debris, as well as other tripping and falling hazards. Erected scaffolds should be continually inspected by users to be sure that they are maintained in safe condition. On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. 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. Find a more appropriate tool that doesnt cause debris to fly Scaffold support beams shall be installed on edge. To secure fair compensation for workers who have been injured in accidents Scaffolding in this Guide means the individual components, for example tubes, couplers or more per square foot. Braces, bearers, and runners shall not be spliced between poles. Activate your 30 day free trialto continue reading. Float Scaffold. Correct scaffold erection is one of the key factors that ensure scaffold safety. 5. Click here to review the details. No handhold available. 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. 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. When dismantling a scaffold, all work should be conducted: 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? Suspension ropes and cables shall be connected to the overhead supporting members by shackles, clips, thimbles, or other means that meet equivalent criteria (e.g., strength, durability). Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. Scaffolds shall be securely attached to the window opening. Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. Free access to premium services like Tuneln, Mubi and more. A thorough understanding of all aspects of 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. Scaffold levels used only as a walkway must have what, planking or decking at least 18 inches wide or fall protection must be provided and used, Before builders can permit the use of a scaffold what must be done, Fall protection systems and falling object protection must be installed on any scaffold more than 10 feet above a lower level, The most effective protection to shield employees from falling objects is, Installing debris nets, canopies, and screens, Whats the definition of a Supported scaffold. A narrow excavation made below the surface of the ground in which the depth is greater than the width with the width not to exceed 15 feet Ladders used to support ladder jacks shall be placed, fastened, or equipped with devices to prevent slipping. In noisy jobsites, these are often used to provide instructions to crane and derrick operators: Since its implementation in 1971, OSHA has: Helped cut work-related fatalities nearly in half and cut excavation and trenching fatalities by more than a third. Do not force frames or . If uplift could cause the components to separate, locking pins must be used and the components secured. Nothing should lean in any direction. The sheaves of all blocks shall fit the size of the rope used. Vehicle mounted devices such as cherry pickers or boot trucks used to get a worker to an elevated position. Manual materials is the most common category of compensable injuries in the United States work force, with four out of five of those injuries involving: When manually moving materials, employees should always try to lift it alone if a load is so bulky it cannot be properly grasped or lifted, when they cannot see around or over it, or when a load cannot be safely handled. Whats going on at the molecular level? Select the equipment you need and place it near the work area. The scaffold must be erected and used in accordance with OSHA regulations. Couplers shall be of a structural metal, such as drop-forged steel, malleable iron, or structural grade aluminum. Before a scaffold is moved, each employee on the scaffold shall be made aware of the move. C. Explosives Catenary Scoffold. . Save my name, email, and website in this browser for the next time I comment. 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. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? We thoroughly check each answer to a question to provide you with the most correct answers. This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. 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. The footing of scaffolding must be sound and rigid, capable of supporting the weight. 25. a. Do not sell or share my personal information. Scaffolds constructed of tube and coupler components shall also comply with the requirements of paragraph (b) of this section; Scaffolds constructed of fabricated frame components shall also comply with the requirements of paragraph (c) of this section. 15% c. 20% d. 25% Use of fall protection above 10 feet. uses. Scaffolds must be plumb, level, and squared. "Two-point adjustable suspension scaffolds (swing stages)." The body becomes part of the circuit Runners shall be erected along the length of . We've updated our privacy policy. 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? When only a part of the width of the metal scaffold frame conforms to ladder spacing, then these frames must be erected in a manner that makes a continuous ladder bottom to top, with ladder sides of the frames in a vertical line. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. You might get some help from www.HelpWriting.net Success and best regards! Scaffolds shall not be bridged one to another. If bearing on rungs only, the bearing area shall include a length of at least 10 inches (25.4 cm) on each rung. 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 have been around for thousands of years, and there are myriad types and Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Prior to starting all demolition operations, OSHA 1926.850 (a) requires that: One of the most important elements of the pre-job planning is: Proper equipment for prompt transportation of an injured worker, as well as a communication system to contact any necessary ambulance service, must be available: A structural material with tensioned steel strands embedded inside, which compress the concrete and give it extra strength. Do Not Try To Drive More Than______Hours In Any One Day. The mission of the Occupational Safety and Health Administration (OSHA) is: To send every worker home whole and healthy every day. B. Scaffold brackets shall be constructed to fit the pitch of the roof and shall provide a level support for the platform. Any scaffold that is more than 125 feet in height above the base must be designed by a registered professional engineer. Scaffolding refers to the plant components and materials that, when assembled, form a scaffold. 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). 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. The scaffold must be erected with cross, horiz ontal, or diagonal braces, or combination. of first grade manila rope. Erecting Scaffolding Safely. 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 Specific requirements are described below. 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. Building ties shall be installed at the bearer levels between the transverse bracing and shall conform to the requirements of 1926.451(c)(1). Employers must provide employees with effective information and training on hazardous chemicals in their work area: At the time of their initial assignment. A staging area is available. Window jacks shall not be used to support planks placed between one window jack and another, or for other elements of scaffolding. Provide guards on power tools and other equipment with moving parts. B. D. Armed robots. These rules were combined under the umbrella of OSHA. 4. The circuit becomes part of the conductor An employee may wear stilts on a scaffold only if it is a large area scaffold. 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Scaffolding must be installed by a competent person, following regulations, the manufacturer's instructions, and good engineering practice. 1926.452 - Additional requirements applicable to specific types of scaffolds. C. Wear goggles or safety spectacles A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Cleats and overhang are not considered to be adequate means of attachment. Prevent An Expressway Emergency By Merging Without _____. All other connections of the scaffold are tight and secure; c. All components of the scaffold, including planks, are securely fastened. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Activate your 30 day free trialto unlock unlimited reading. The support connection shall be arranged so as to prevent the needle beam from rolling or becoming displaced. You can read the details below. On straight run scaffolds, longitudinal bracing across the inner and outer rows of posts shall be installed diagonally in both directions, and shall extend from the base of the end posts upward to the top of the scaffold at approximately a 45 degree angle. Two-point scaffolds shall not be bridged or otherwise connected one to another during raising and lowering operations unless the bridge connections are articulated (attached), and the hoists properly sized. C. To send every worker home whole and healthy every day 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. 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. A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. Plumb and level all scaffolds as the erection proceeds. 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. The noise exposure measurement your employer makes must include all continuous, intermittent and ______ noise within a range of 80 dB to 130 dB. 2. 1. Bearers shall be installed transversely between posts, and when coupled to the posts, shall have the inboard coupler bear directly on the runner coupler. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity? On scaffolds whose length is less than their height, such bracing shall be installed from the base of the end posts upward to the opposite end posts, and then in alternating directions until reaching the top of the scaffold. Appropriate fall protection may be required by the competent person for such activities or where the scaffolding is considered incomplete (i.e. "Plasterers', decorators', and large area scaffolds." All brace connections must be secured. One who is capable of identifying existing and predictable hazards in the surroundings, or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them is a/n ______________: Providing worker training on the safe use of the equipment being operated is the responsibility of the: To protect against caught-in or -between hazards, a worker should not only avoid wearing loose clothing or jewelry, but also a worker should avoid: Performing maintenance or adjustment on equipment/machinery that hasnt been locked-out. Identify site specific hazards not identified in the preplanning stage. Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. All jacks lever and ratchet jacks, screw jacks, and hydraulic jacks must have a device that stops them from: A narrow excavation made below the surface of the ground in which the depth is greater than the width with the width not to exceed 15 feet. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. Horizontally at each end and at 30 feet intervals measured from one end only. OSHA MODULE 5 Scaffolds The use of safe lifting postures and timing Guard or securely cover all holes created or uncovered before leaving a work area When horses are arranged in tiers, each tier shall be crossbraced. DO NOT ABUSE OR MISUSE THE SCAFFOLD EQUIPMENT. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. You do not have access to www.concreteconstruction.net. 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. Posts must be accurately spaced, erected on suitable bases, and maintained plumb. B. 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. 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. C. Any square or rectangular trench with a width that does not exceed 15 feet missing parts due to area obstructions). We need to follow scaffolding safety procedures. 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. 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. C. Have all brakes and locking devices set when the occupied personnel platform is in stationary position Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk The maximum permissible span for 2 X 10 inch or wider planks is shown below in "Material." . Insufficient length. D. Static electricity gathers outside the circuit. Introduction Place the planks. You've requested a page on a website (cloudflarepreview.com) that is on the Cloudflare network. 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