9. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. The scaffold should be plumb, level and square. Note: The diagram does not show a way to get on or off the platform because there are many possible variations on access. Be placed on a firm foundation and be uniformly level within 1 percent of level grade 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. Ensure the surface on which the scaffold will be erected is firm, level and capable of 5. To determine whether employees need hearing protection, employers have to consider: The loudness of the noise, as measured in decibels. Note: Except where . This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. 10. No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. 5. Activate your 30 day free trialto unlock unlimited reading. Scaffolding is used for renovations, construction, maintenance, installations, and much more. 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. No handhold available. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . These hooks shall be so placed that they will prevent the platform from falling if one of the horizontal wire ropes breaks. 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. 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. No modifications or additions that affect the capacity or safe operation of a crane or derrick should ever be made without: The manufacturers written approval, which should be kept on file. Scaffolds must be constructed of suitable structural materials. Such scaffolds are covered by paragraph (q) of this section. D. Alertness and reaction time testing. If bridges are not used, passage may be made from one platform to another only when the platforms are at the same height and are abutting. B. 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. This means guardrails, a personal fall arrest system or both, depending on the situation. A staging area is available. Do not force frames or . Braces, bearers, and runners shall not be spliced between poles. "Plasterers', decorators', and large area scaffolds." On scaffolds whose length is greater than their height, such bracing shall be repeated beginning at least at every fifth post. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: A. sawhorses; others are much more complex, such as the scaffolds erected hundreds of Erected scaffolds should be continually inspected by users to be sure that they are maintained in safe condition. Runners shall extend over a minimum of two poles, and shall be supported by bearing blocks securely attached to the poles. 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. 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 . Move the scaffold into your desired position, and make sure it is level and secure. The noise exposure measurement your employer makes must include all continuous, intermittent and ______ noise within a range of 80 dB to 130 dB. When balancing a chemical equation. Ladder Jack Scaffold. Scaffolds not specifically addressed by 1926.452, such as but not limited to systems scaffolds, must meet the requirements of 1926.451. 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 Catenary Scoffold. Mechanical demolition refers to demolition using equipment like: A. Wrecking balls or jackhammers (Do not use insulating Styrofoam cups.) Review the foundation. A noise level of 95 dB is ______ than the lowest level at which hearing protection is required (85 dB), and your exposure should be limited to six hours or less. Caster stems and wheel stems shall be pinned or otherwise secured in scaffold legs or adjustment screws. Personal Fall Arrest System. The bottom runners and bearers shall be located as close to the base as possible. 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. Wooden bracket-form scaffolds shall be an integral part of the form panel. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. If uplift could cause the components to separate, locking pins must be used and the components secured. Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. The three main scaffold types are aerial lifts, supported scaffolds and: A. Tubular scaffolds A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. Before the start of each work shift, it is mandatory that: A competent person inspects the scaffold before the start of each work shift. Scaffolds shall be plumb, level, and squared. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Be supported by bearing blocks securely attached to the poles. 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. Bearers shall extend a minimum of 3 inches (7.6 cm) over the outside edges of runners. A. 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). Scaffolding must be erected, altered, moved, and dismantled in accordance with applicable OSHA standards and under the supervision of a scaffold competent person. Personal Fall Arrest System. Some simple scaffolds are little more than planks and guardrails over two The cross braces shall be of such length as will automatically square and align vertical members so that the erected scaffold is always plumb, level, and square. 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. Other requirements are listed Scaffolds must be designed by a professional engineer in the following situations: Supported scaffolds exceeding: fifteen metres in height above their base support; or Bearers shall be installed transversely between posts, and when coupled to the posts, shall have the inboard coupler bear directly on the runner coupler. You do not have access to www.concreteconstruction.net. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. 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. 25. 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 Scaffolds, once properly erected, are a control measure to prevent the risk of persons and objects falling when working at height. Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? Movement of the scaffold must be under the direction of a competent person. C. Electricity jumps its normal path and strikes a person 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. Stilts, when used, shall be used in accordance with the following requirements: [44 FR 8577, Feb. 9, 1979; 44 FR 20940. Warped. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal Electric shock occurs when: A. Pre-Planning & Inspection Introduction Scaffolding is a precise structure. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? That requirement reflects the additional hazards and structural stress involved with such heights. Identify site specific hazards not identified in the preplanning stage. Scaffolds and components must be able to support at least four times the intended load. 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 scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. To prevent surface water from entering an excavation and to provide adequate drainage of the adjacent area, OSHA standards require the use of: Water removal equipment, diversion ditches, dikes, or other suitable methods. It is used in construction work where the work cannot be done from the ground level. Poles shall be secured to the structure by rigid triangular bracing or equivalent at the bottom, top, and other points as necessary. Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Click here to review the details. Activate your 30 day free trialto continue reading. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. A supported scaffolding height-to-base ratio of . To enforce the federal regulations that ensure that business is conducted in an ethical manner Any part of a building or structure used to support the scaffold shall be capable of supporting the maximum intended load to be applied. Ground level as possible just to the base as possible Wrecking balls or jackhammers ( Do not insulating! 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