being laid. Select all that apply and then click DONE. A ladder or other safe means of access must be provided. Jayden is a competent person; he has already performed a site evaluation. a.15 feet This scaffold is overloaded and planks are strained. Select the correct answer and then click DONE. Load carrying information on components is available from the scaffold manufacturer. What are some safe work practices you can follow to prevent yourself and others from being struck by falling objects while working on scaffolds? Select the correct answer and then click DONE. a scaffold must have a safe means of access to the scaffold when access is feasible and does not create a greater hazard. 4 feet Stationary scaffolds over 125 feet in height and rolling scaffolds over 60 feet in height shall be designed by a professional engineer. Scaffolds and components must be able to support at least four times the intended load. Refusing to occupy a scaffold prior to the Competent Person providing documentation indicating that the scaffold has been inspected and deemed safe. Princeton, NJ 08540ehs@princeton.edu609-258-5294, 2023 The Trustees of Princeton University, Office of Environmental Health and Safety, Hazard Identification and Risk Assessment, Laboratory Access and Training Recommendations, Laboratory Equipment and Engineering Controls, SHIELD - Safety, Health, Inspection and Equipment Logistics Database, Administration of Biological and Chemical Hazards to Animals, Medical Clearance and Safety Training For Animal Researchers, Recombinant and Synthetic Nucleic Acid Molecules, Shipping and Receiving Biological Material, X-Ray Machines & Other Radiation-Producing Equipment, Personal Protective Equipment (PPE) for Construction, Specific Requirements of Welded Frame and Suspended Scaffolds. Direct access is acceptable when the scaffold is not more than14 inches horizontally and not more than 24 inches vertically from the other surfaces. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. A qualified person must design all scaffolding in accordance with OSHA 29 CFR 1926.451 General Requirements for Scaffolds and 29 CFR 1926.452 Additional Requirements Applicable to Specific Types of Scaffolds. c.4 to 1 Select the correct answer and then click DONE. They are frequently used in one or two tiers by residential contractors, painters, etc., but their modular frames can also be stacked several stories high for use on large-scale construction jobs. Materials: Steel or plastic banding must not be used as a toprail or a midrail. Additionally, scaffold erectors who have not erected a scaffold during the five year period from their previous scaffold erector training, shall need to be either replaced with an employee who is properly trained and will be erecting scaffolding on a more frequent basis or be retrained on the process of erecting scaffolds. 4.Ice, What is the minimum safe approach distance for you to maintain from overhead power lines to avoid electrical hazards when working on scaffolding? S/N 869-034-00107-6; cost $30 (foreign $37.50). Hot asphalt paving (summer) - This type of asphalt (top coat) is soft when placed and then compacted with rollers. Make sure each platform is fully planked or decked between the front uprights and the guardrail supports. HV[o6~8%9N(Km -QTI*CJe'{tC^nAieAi?Ypqvi;y5P( s!u A ladder or other safe means of access must be provided. Select the correct answer and then click DONE. -Make sure it was erected properly -Check that no structural alterations were made -Replace any missing ties or braces Contact EHS for assistance and guidance in any of the duties associated with being a Competent Person. d.Registered engineer, Guys, ties, or braces must be installed where horizontal members support inner and outer legs when the scaffold has a height/width ratio greater than: c.24 inches TypeofAdvertisementTelevisionProductAdvertisedBlackberryTargetMarketStudents-backtoschoolProductInformationFeaturedBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections. Select the correct answer and then click DONE. a. Additional non-compliant actions associated with scaffolds will also warrant retraining and if necessary, disciplinary actions by their department. Because frame scaffolds are the most common type of supported scaffold, this course uses the Fabricated Frame Scaffold to describe requirements that are common to all supported scaffolds. 4.Chemical burns \text { Market } A scaffold can be overloaded by removing the braces, which causes the weight on the scaffold to be distributed to fewer structural members. 4. b. Employees erecting and dismantling supported scaffolding must have a safe means of access provided when a competent person has determined the feasibility and analyzed the site conditions. You must cordon off the area prior to erecting or dismantling scaffolds above: 1.People The footing of scaffolding must be sound and rigid, capable of supporting the weight. Compacted Gravel Roads - This type of road surface may have adequate strength but the material does not provide a smooth surface. Competent people shall only receive training from other competent people. Design and preplanning of the scaffold including weight limitations, scaffold type, fall protection, tie-offs, supports, etc. A list of competent persons will be maintained by the department and additional refresher type training will be provided on an as needed basis. Contacting EHS if there is a concern regarding the erection of the scaffold. Direct access is acceptable when the scaffold is not more than 14 inches (36 centimeters) horizontally and not more than 24 inches (61 centimeters) vertically from the other surfaces. Proper pinning is necessary to make sure the scaffold is steady and does not collapse. Materials being hoisted onto a scaffold must All employees who perform work on a scaffold shall be trained annually to recognize the hazards associated with the type of scaffold being used and the procedures to control or minimize those hazards. c.40 - 48 inches Rolling scaffold must not be used on sloped surfaces. Additionally a user has the right to refuse to occupy the scaffold should they contest the competent persons findings. Make sure wooden planking is covered with opaque finishes, except that platform edges may be marked for identification. Refresher training also to be provided whenever there is an indication that the individual in question, whether they be a competent person, erector, user, or qualified person, exhibits a lack of understanding of the manufacturer, local, state, and federal requirements associated with the inspection, erection, or use of scaffolds. Make sure portable, hook-on, and attachable ladders are positioned so as not to tip the scaffold. 1.Store materials away from the edge. At all points of a scaffold where the platform changes direction, such as turning a corner, any platform that rests on a bearer at an angle other than a right angle shall be laid first, and platforms which rest at right angles over the same bearer shall be laid second, on top of the first platform. \text { Web, and get directions } [29 CFR 1926.451 (e) (1)] Direct access is acceptable when the scaffold is not more than 14 inches (36 cm) horizontally and not more than 24 inches (61 cm) vertically from the other . d. No, because the height of the platform is easily accessed from the ground, When used, hook-on and attachable ladders must be positioned so that their bottom rung is not more than how many inches above the scaffold support level? When horizontal lifelines are used, make sure they are being secured to two or more structural members of the scaffold. Scaffolds are never as safe as the foundations they are built on. Compute the recent two years cash flow on total assets ratio for Samsung. b.3 to 1 c.Four times multiple fractures to the head, left and right foot, and left wrist, and torn ligaments in the knees. ). 2.Always use the proper ladder or stairs. \end{array} & \begin{array}{l} Planks are stamped for scaffold approved loading and usage on one end. \end{array} Midrails, screens, mesh, intermediate vertical members, and solid panels must be capable of withstanding, without failure, a force of at least 150 pounds applied in any downward or outward direction at any point along the intermediate member. Scaffolds must be plumb, level, and squared. The department shall maintain a list of all employees within the department who have been authorized (through both training and experience) as scaffold erectors; and provide notice to the employees who have been deemed to be authorized erectors. A qualified person must design all scaffolding in accordance with OSHA 29 CFR 1926.451 "General Requirements for Scaffolds" and 29 CFR 1926.452 "Additional Requirements Applicable to Specific Types of Scaffolds". Wood decking - This may lend itself for use as a foundation. He fell approximately 12 feet to a concrete dock. b.20 feet b.Two feet What should be Jayden's next step? Check that scaffolds and scaffold components are capable of supporting, without failure, their own weight and at least 4 times their maximum intended load. c. 3.5 inches d.Add additional poles to support the scaffolding. It is impossible for a stable structure to be built upon a foundation that does not start out square and level. While sitting or kneeling on a fixed deck plank attached to a fabricated frame scaffold, a worker was pulling a 16-foot long 2x4 off the bucket of an excavator. Select the correct answer and then click DONE. Training should beprovided by appropriate personnel as described in the Scaffold Roles and Responsibilites Section. In its simplest form, a scaffold is any temporary elevated or suspended work surface used to support workers and/or materials. Select the correct answer and then click DONE. b.Once a week When the work area is less than 18 inches wide. Only those items specifically designed as counterweights must be used. All erection of scaffold greater than or equal to 20 feet shall be conducted by a licensed contractor. c.Long sleeve shirts Requirements specific to the other types are described in the next module. b. OA025.pdf Guardrails shall be constructed as follows: All job sites and work areas shall be inspected prior to the erection of scaffolds to determine the sites ability to support structure, and for location of electric power lines, overhead obstructions, wind conditions, and the need for overhead protection or weather protection coverings. The end points of the cross bracing must be no more than 48 inches (1.3 meters) apart vertically. Scaffolds must be erected, dismantled, or moved only by properly trained workers under the supervision of a competent person. 1.Use gravel to fill in the uneven spots. \end{array} Employees shall be trained to demonstrate competency in the following areas: 5235 South Harper Court Scaffold components manufactured by different manufacturers shall not be intermixed unless the components fit together without force and the scaffolds structural integrity is maintained. Scaffolding student language requires that teachers understand their students and the language being used during lessons, to identify and support the targeted language that can be provided during instruction. a.1/2 inch Stairways must: have the stringers with a maximum slope of 60 degrees from the horizontal handrail on the open side of each flight Ramps used to access scaffolds must: Have a slope gradient not exceeding 1 in 3. \text { discount; pink or silver; } \\ Scaffolding is widely used during construction and renovation activities. Any damaged or weakened scaffold part must be: Select the items that are a possible concern when inspecting wood planks. Be sure scaffolding stays level and plumb as erection progresses. This threshold differs from 29 . b.2 inches 2.Use bricks to bring the scaffolding level. 2008-02-28T15:30:48-05:00 Make sure frames and panels are joined together vertically by coupling or stacking pins or equivalent means. Before erecting a scaffold, the first step is to: a.Perform a site evaluation. 4.Wear face masks. Select the correct answer and then click DONE. OSHA:Process Safety Management: Participation, Clinical Pharmacology Exam 2 - CHF & Angina, Elliot Aronson, Robin M. Akert, Timothy D. Wilson, Unternehemensfinanzierung in der EU und in de. This must be done prior to initial use of the scaffold each shift. The scaffolding platform will be 32 inches from the ground. Supported scaffold poles, frames, uprights, etc. Make sure two or more vertical lifelines are not attached to each other, or to the same point of anchorage. c.30 feet b.18 inches When erecting or dismantling supported scaffolds, a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site conditions. A qualified person must do this analysis. You can correct any missed questions and check your Jayden and his crew are anxious to begin erecting scaffolding at the new job site. Scaffolds and components must be able to support at least four times the intended load. Select all that apply and then click DONE. Separation of frames can occur in high winds (uplift), or when workers climb endframes, overload the platform, Make sure employees do not use cross-braces as a means of access. Screw jacks with base plates shall be used to compensate for uneven ground. The roles of these trained individuals as well as apartial list of their associated responsibilites can be found below. The department will designate, identify, and provide training for competent persons within the department. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. A mobile ladder stand may also have handrails and is designed for use by one employee at a time. After clicking the button, the questions you missed will be listed below. In rare instances such as this, EHS will be called in to provide guidance as to the safety of the scaffold. Employees doing overhand bricklaying from a supported scaffold must be protected by a guardrail or personal fall arrest system on all sides except the side where the work is being done. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. A competent person must make the feasibility determination based on site conditions and the type of scaffold being erected or dismantled. \begin{array}{l} Have cross-cleats securely nailed at regular intervals not exceeding 500 millimetres. 4.Jump from one platform to another. are specifically designed and constructed for use as ladder rungs, are not used as work platforms when rungs are less than 11 inches in length, unless each affected employee uses appropriate fall protection, have rungs which are uniformly spaced and a length of at least 8 inches, with a maximum space between rungs of 16 inches, have rest platforms provided at a maximum of 35 foot vertical intervals, a stair rail consisting of a toprail and a midrail on each side of the stairway, a toprail of each stair rail system capable of serving as a handrail, unless a separate handrail is provided, sufficient handhold on handrails, and toprails serving as handrails, for employees grasping them to avoid falling, stair rails and handrails surfaced to prevent punctures or lacerations to employees, and to prevent snagging of clothing, stair rails and handrails constructed so that they do not constitute a projection hazard, a space of at least 3 inches between handrails, or stair rails used as handrails, and other objects, a distance of no less than 28 inches and no more than 37 inches from the upper surface of the stair rail to the forward edge of the tread, in line with the face of the riser, a landing platform at least 18 inches wide by 18 inches long at each level, a scaffold stairway width of at least 18 inches between stair rails, slip-resistant surfaces on treads and landings, stairways installed between 40 degrees and 60 degrees from the horizontal, guardrails meeting OSHA requirements on the open sides and ends of each landing, uniform riser height, within -inch, for each flight of stairs, greater variations in riser height are allowed for the top and bottom steps of the entire system (not for each flight of stairs), uniform tread depth, within -inch, for each flight of stairs, Ensure ramps and walkways 6 feet or more above lower levels have guardrails that comply with. Single-point adjustable suspension scaffolds. Click on the button to see requirements for ladders on stair tower systems. Training of other competent persons, scaffold erectors, and users. Cross bracing is not acceptable as an entire guardrail system but is acceptable for a toprail when the crossing point of the two braces is between 38 inches (0.9 meters) and 48 inches (1.3 meters) above the work platform and for midrails when between 20 inches (0.5 meters) and 30 inches (0.8 meters) above the work platform. Base plates or screw jacks shall be in firm contact with both the sills and the legs of the scaffolding. What is the most common type of supported scaffold? 2012-10-05T11:53:02-04:00 Select the correct answer and then click DONE. What are supported scaffold foundations set on to ensure stability? Ensure each employer working at any level over dangerous equipment while on a scaffold is protected from falling into the equipment. Compacted Soils & Then Frozen - Compacted soils, as with all soils, swell and heave due to moisture content or water contained within the soil. Included here are general requirements for all scaffolds. Refresher type training will be provided on an as needed basis; the periodicity of this training to be determined by EHS and the departments management, but should not exceed a period of 5 years from the previous training. a.Two times Sills shall be level and in full contact with the supporting surface. Please answer all of the questions before checking your quiz answers. Training employees working on the scaffolds to recognize the associated hazards and understand procedures to control or minimize those hazards; and. Uplift is the separation of a frame from the frame below it. Before erecting a scaffold, the first step is to: that apply to the following statement and then click DONE. a.Begin to erect the scaffolding. 4. a.One foot Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Per 1926.451 (g) (1), each employee on a scaffold more than 10-feet above a lower level must be protected from falling to that lower level (also note American National Safety Institute/American Society of Safety Professionals (ANSI/ASSP) - Scaffolding Safety Requirements A10.8-2019 standard). EXCEPTION: Scaffolds and materials may be closer to power lines than specified where such clearance is necessary for performance of work and only after the utility company or electrical system operator has de-energized or relocated the lines. PScript5.dll Version 5.2.2 \text { Advertised } He notices that there have been several large spills of paint over them. 3.Maintain three points of contact while on a ladder. \text { Featured } After answering all the questions, click on the "Check Quiz Answers" button to grade your quiz and see your score. \text { Product Information } \\ A competent person is an employee who is capable of identifying existing or predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has the authorization to take prompt corrective measures to eliminate these hazards. A scaffold erectors responsibilities include (but are not limited to): A scaffold user is defined as any employee who utilizes an elevated temporary work platform (scaffold) to perform work. Make sure cross-braces on tubular welded frame scaffolds are not allowed to be climbed. Scaffolding must not be placed on unstable objects, such as bricks or blocks. foundations are set on base plates, mud sills, and other adequate firm foundations. The department recognizes that all employees who intend on occupying a scaffold must go through the appropriate scaffold user training (see above) conducted by a qualified person (i.e. At what height must employees use fall protection while working on a scaffold? Select the correct answer and then click DONE. \text { use to get e-mail, surf the } \\ How much weight should a supported scaffold and components be capable of supporting without failure? Only authorized scaffold erectors can erect scaffolds on campus. It is generally applied as a thin coat over a base coat and takes several days to achieve its designed strength. A light weight supported scaffold could be used on wood decking when the competent person has determined the structure would support the scaffold and its entire load. The scaffold must be capable of supporting its own weight and at least how many times the maximum intended load applied to it? The most frequent fall-from-elevation accident is a fall off ladders. d.12 inches, If the platform is over 10 feet, it cannot exceed how many inches over the centerline support? Maintaining fall protection requirements while erecting / dismantling scaffolds. In such cases, verify that the platforms are as wide as feasible, and fall protection is provided. 1926.451(e)(1) . chubby c.13, 15 When inspecting the surface conditions where the scaffolding will be erected, ask yourself: All wood planks used on scaffolds should be rated what grade? 3.Metal All brace connections must be secured. b.Use the scaffolding as is. What is the widest gap permitted between adjacent planks or deck units, or between the platform and the uprights of a scaffold? 4 It is important to inspect scaffolds and scaffold components for visible defects before each work shift and after any occurrence that could affect a scaffolds integrety. c.Inspect the scaffolding for paint. d. Repair any defective scaffolding components. Be sure employees are able to safely access any level of a scaffold that is 2 feet above or below an access point. 1.Make sure it was erected properly. Replace any missing ties or braces. All planking or platforms must be overlapped a minimum of twelve (12) inches and secured from movement. 2. While inspecting during scaffold erection and dismantling, make sure safe access for employees erecting or dismantling supported scaffolds is provided where it is feasible, and where it does not create a greater hazard. . The means of access must be determined before erection of the scaffold and employees are never allowed to climb on cross braces for either vertical or horizontal movement. Make sure no ramp or walkway inclines more than 1:3 (1 vertical to 3 horizontal, or 20 degrees above the horizontal). Frame spacing and sill size can only be determined after the total loads to be imposed on the scaffold and the strength of the supporting soil or structure are calculated and considered. Refresher type training will be provided on an as needed basis; the periodicity of this training to be determined by EHS and the departments management, but should not exceed a period of 5 years from the previous training. Counterweights used for suspended scaffolds shall be made of materials that cannot be easily dislocated. Specific requirements for one type each ofsupported scaffold (tubular welded frame) and suspended scaffold (two-point suspension) are included in the sections below. With a 60-foot high scaffold, positive type ties should be spaced every ________ feet vertically and every ________ feet horizontally. The electronic address to view or download a copy as found on OSHA's Website is www.osha.gov. The use of repaired wire rope is prohibited. Horizontal members are erected in a manner that creates a usable ladder and provides good hand hold and foot space. b.Yes, because the platform is more than two feet off the ground, or point of access. Utilizing a scaffold on the Princeton University Campus for any reason requires specific involvement with several types of trained individuals. 22 inches Select all that apply and then click the DONE button. Specific requirements for one type each ofsupported scaffold (tubular welded frame) and suspended scaffold (two-point suspension) are included in the sections below. Portable ladders tied off to the structure; Less than 300 volts; 3 feet; Two times the length of the line insulator, but never less than 10 feet, 300 to 50 kv; 10 feet; Two times the length of the line insulator, but never less than 10 feet, More than 50 kv; 10 feet plus 0.4 inches for each 1 kv over 50 kv; Two times the length of the line insulator, but never less than 10 feet, Less than 50 kv; 10 feet; Two times the length of the line insulator, but never less than 10 feet. All scaffolds more than six feet above the lower level shall protect employees with guardrails on each open side of the scaffold. Select the correct answer and then click DONE. 1.Wear personal fall arrest systems (PFAS). Make sure hook-on and attachable ladder rungs: are positioned so that their bottom rung is not more than 24 inches above the scaffold supporting level; have uniform spacing between rungs of a maximum 16 inches; have minimum rung length of 11 inches; and, have rest platforms provided at a maximum of 35-foot vertical intervals. a.1.5 inches 32 - 36 inches Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Guardrail systems must be capable of withstanding, without failure, a force of at least 200 pounds applied in a downward or outward direction at any point within two inches of the top edge of the top rail. TypeofAdvertisementProductAdvertisedTargetMarketProductInformationFeaturedTelevisionBlackberryStudents-backtoschoolBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections\begin{array}{llll} b. If it can be demonstrated that a wider space is necessary, check to make sure the gap is as small as possible and does not exceed 9 1/2 inches. A ladder or other safe means of access must be provided. 8 inches 8 Even if they are "in the way," braces should not be removed while work is being performed on a scaffold! 7. d.28 inchesa, When ladders are used on a supported scaffold that is taller than 35 feet, then rest platforms must be available at intervals no greater than: To prevent movement, the scaffold must be secured to the building or structure at intervals not to exceed 30 feet horizontally and 26 feet vertically. Manila or synthetic rope used for top rails must be inspected to ensure that the rope meets the strength requirement. d.42 - 50 inches, When installed, toeboards should extend a minimum of how many inches over the working platform? scaffold and scaffold components for visible defects. Scaffolds are commonly used in construction work so workers have a safe, stable work platform when work cannot be done at ground level or on a finished floor. Note: A level should be used during assembly to make sure new structural components remain in line. No more than three workers are permitted to work at one time on suspension scaffolds with a working load of 750 pounds. \end{array} & \begin{array}{l} 8. d.Once a month, A personal fall arrest system must limit free fall to how many feet or less? a.Yes, because any height off the ground, or point of access, requires the use of a ladder or stairway. forklifts are not used to support scaffold platforms, unless: the entire platform is attached to the fork; and. Cross braces shall not be used as a means of access. F: 773.702.6546 Each worker on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level by use of guardrail systems or personal fall arrest systems. Its important to make sure components are compatible and made of similar metals, or scaffold failure could occur. Ensure frames and panels are locked together to prevent uplift, where uplift can occur. The footing of scaffolding must be sound and rigid, capable of supporting the weight. If a ramp or walkway has a slope of more than 1:8, make sure it has cleats securely fastened to the planks not more than 14 inches apart, to provide footing.
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