These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks. Always use . Platform units shall be securely attached to the needle beams by bolts or equivalent means. Where uplift can occur which would displace scaffold end frames or panels, the frames or panels shall be locked together vertically by pins or equivalent means. Step 1 Select and prepare the ground area. ", "Single-point adjustable suspension scaffolds.". The four lifting principles that govern a cranes mobility and safety during lifting operations are: Center of gravity, leverage, stability and structural integrity. Found a mistake? Just a few example you can find fast on the interwebs, NFI . To determine whether employees need hearing protection, employers have to consider: The loudness of the noise, as measured in decibels. Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. 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 . Such scaffolds are covered by paragraph (q) of this section. 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. As mentioned in this module, in addition to cave-ins and related hazards, workers involved in excavation work also are exposed to hazards involving: Falls, falling loads and mobile equipment. b. Coefficients are used to balance the atoms on both sides. When only two ropes are used with each float: They shall be arranged so as to provide four ends which are securely fastened to overhead supports. A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. The entire supporting structure shall be securely braced to prevent any horizontal movement. Supports for platforms shall be attached directly to the support stirrup and not to any other platform. Safe access above 2 feet. True or False: There is usually some form of warning before a cave-in. C. Explosives Platforms shall be secured to the brackets in a manner that will prevent the separation of the platforms from the brackets and the movement of the platforms or the brackets on a completed scaffold. 5. PLUMB/LEVEL/SQUARE. Use of fall protection above 10 feet. and must be provided on any scaffold 10 feet or more above a lower level. This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . Overhead supporting members (roof structure, ceiling beams, or other structural members) shall be inspected and checked for strength before the scaffold is erected. All brace connections must be secured. "Bricklayers' square scaffolds (squares). Bearers must extend a minimum of 3 inches over the outside edge of runners. Personal Fall Arrest System. To secure fair compensation for workers who have been injured in accidents 1926.452 (c) (4) Poles shall be secured to the structure by rigid triangular bracing or equivalent at the bottom, top, and other points as necessary. Activate your 30 day free trialto continue reading. each of the hazards. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Crawling Board. A thorough understanding of all aspects of The checks above are common scaffolding faults to look out for that show you the scaffold structure is unsafe. All planking must be Scaffold Grades, or equivalent, as recognized by approved grading rules for the species of wood used. A. Some simple scaffolds are little more than planks and guardrails over two uses. Review the foundation. 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. Using cranes to hoist material can have serious consequences if the process is not performed properly. 25. 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. Suspension scaffold rigging must at least 6 times the intended load. 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? You've requested a page on a website (cloudflarepreview.com) that is on the Cloudflare network. List at least three of the four main hazards to which persons working on a B. c. The Law of Conservation of Matter must be followed. Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. . prevented every year. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Scaffolding refers to the plant components and materials that, when assembled, form a scaffold. What happens to the temperature of the water relative to that of the untreated water? A scaffold should always be erected: Choose one answer. Do not force frames or . There are many other scaffolds in use as well, each with advantages and Scaffolding work means the erection, alteration and dismantling of a scaffold. Frequently used types of scaffolds include the Scaffolds must be plumb, level, and squared. Building ties shall be installed at the bearer levels between the transverse bracing and shall conform to the requirements of 1926.451(c)(1). job, and he shouldhis life depends on it. Apr. You can read the details below. A good time to perform these inspections is at the start of the workday to ensure the area is clear for that day's shift. a. 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. Fasten all couplers and/or connections securely before assembling the next level . 2. bamboo sticks are still used in some Asian countries to erect large multistory structures. Boatswains' chair seat slings shall be a minimum of five-eight (5/8) inch (1.6 cm) diameter fiber, synthetic, or other rope which will satisfy the criteria (e.g., strength, slip resistance, durability, etc.) Let us know about it through the REPORT button at the bottom of the page. Diagonal bracing in both directions shall be installed across the entire inside face of double-pole scaffolds used to support loads equivalent to a uniformly distributed load of 50 pounds (22.7 kg) or more per square foot (929 square cm). 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. You do not have access to www.concreteconstruction.net. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). Bracing shall be installed as close as possible to the intersection of the bearer and post or runner and post. Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. Scaffolds not specifically addressed by 1926.452, such as but not limited to systems scaffolds, must meet the requirements of 1926.451. When two or more scaffolds are used they shall not be bridged one to another unless they are designed to be bridged, the bridge connections are articulated, and the hoists are properly sized. Plumb and level the scaffold as it is being erected. Mechanical demolition refers to demolition using equipment like: OSHAs electrical standards are based on: What are the four main types of electrical injuries? 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. 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. The body becomes part of the circuit Introduction Do not erect, dismantle or alter a scaffold unless under the supervision of a competent person. 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. 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. The scaffold assembly must be designed to comply with Local, State and Federal safety requirements. A training program to teach proper lifting techniques should cover: A. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Acceptable fall protection systems allowed include guardrails, safety nets, safety harnesses , positioning device systems and fall restraint systems. 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