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. c.40 - 48 inches Uplift is the separation of a frame from the frame below it. Remove ties and braces. 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. Prior to occupation scaffold erectors must notify the competent person that the scaffold has been erected and is ready to be inspected. 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. d. 14 feet, What must be worn at all times while working from scaffolding? Employers must provide access when the scaffold platforms are more than 2 feet (0.6 meters) above or below a point of access. Erectors and dismantlers face additional access problems due to the incomplete condition of the scaffolding. The weather has been an issue and has pushed the project back. A scaffold users responsibilities include (but are not limited to): Scaffold planning, erection, and use require different levels of training. d.12. 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. All scaffolding shall be plumb and level. Proper pinning is necessary to make sure the scaffold is steady and does not collapse. b.3 to 1 11. Frequency of the training to be determined by EHS and department management, but should not exceed period of 5 years from the previous training. The number one scaffold hazard is worker falls. Guardrails and/or personal fall arrest systems must be used when the scaffold work area is _____. d.24 inches, On high scaffolds, all planks should be secured by being tied down with: All erection of scaffold greater than or equal to 20 feet shall be conducted by a licensed contractor. Make sure scaffold components manufactured by different manufacturers are not intermixed, unless they fit together without being forced and the scaffold's structural integrity is maintained. 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. An access ladder or equivalent safe access must be provided. At a minimum, daily inspection and documentation of the condition of the scaffold and its ability to be occupied safely. Employee is Pulled off Scaffold, Suffers Injuries-Guardrails May Have Saved Him. Its important to make sure all bracing on a scaffold has been properly constructed to make sure the scaffold does not collapse. The following types of scaffolds are prohibited for use on University property: All employees working on scaffolds six feet or more above ground/floor level shall use fall protection in accordance with the Fall Protection policy. Select the correct answer and then click DONE. The riser height must be uniform, and the stair angle must be between 40 and 60 degrees from the horizontal. Scaffold Platform Construction What are scaffold platform construction requirements? Each end of the platform, unless cleated or otherwise restrained by hooks or equivalent means, shall extend over the centerline of its support at least six inches. Select the correct answer and then click DONE. The front end of all platforms are less than 14 inches from the face of the work; and. d.5 to 1, The space between adjacent planks and the space between the plank and the uprights must be no more than: \hline \text { Television } & \text { Blackberry } & \begin{array}{l} c.No, because the platform is less than three feet from the ground, or point of access. All employees are prohibited from working on scaffolds covered with snow, ice, or other slippery materials. Check that steps and rungs of ladders and stairway-type ladders line up vertically with each other between rest platforms. Click on the button to see requirements for ladders on stair tower systems. Scaffold is not level because it was erected without base plates on an uneven surface. a.16 inches 1.Snow Select the correct answer and then click DONE. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. There were no guardrails at the working level. Manila or synthetic rope used for top rails must be inspected to ensure that the rope meets the strength requirement. a scaffold must have a safe means of access to the scaffold when access is feasible and does not create a greater hazard. Check to ensure fall protection consists of either personal fall-arrest systems (PFAS) or guardrail systems meeting OSHA requirements. a.One mudsill per leg Persons selected to be competent persons at Princeton should receive professional Scaffold Competent person training either from an internal (Office of Environmental Health and Safety, EHS) or external competent person (i.e. 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? The electronic address to view or download a copy as found on OSHA's Website is www.osha.gov. Read the material in each section to find the correct answer to each quiz question. Guardrails shall be installed along the open sides and ends before releasing the scaffold for use by the employees, other than erection or dismantling crews. Two tiebacks installed at opposing angles are required when a perpendicular tieback cannot be installed. A ladder or other safe means of access must be provided. In such cases, verify that the platforms are as wide as feasible, and fall protection is provided. 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. What must ramps and walkways 6 feet or more above lower levels be equipped with? Sills shall be level and in full contact with the supporting surface. Ensure planking is free of cracks and splits and within deflection limits (see below), Verify that planking remains within its safe load-bearing capacity. 904-01 c.One mudsill per leg extending 6 inches beyond centerline of the pole a.Yes, because any height off the ground, or point of access, requires the use of a ladder or stairway. Ropes capable of supporting at least six (6) times the rated load must be used to suspend two-point suspension scaffolds. c.4 to 1 A scaffold can be overloaded by removing the braces, which causes the weight on the scaffold to be distributed to fewer structural members. However, an evaluation of the deck for its maximum allowable loading would be required, since the decking or deck structure could fail under a full scaffold load. 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. Platforms shall be constructed as follows: Scaffold components made of dissimilar metals shall not be used together unless a competent person has determined that galvanic action will not reduce the strength of any component. chubby Separation of frames can occur in high winds (uplift), or when workers climb endframes, overload the platform, Its critical to check to make sure scaffolds do not exceed their rated capacity. Key comparative information for Samsung, Apple, and Google follows. When it is infeasible to provide a work area at least18 inches (46 centimeters) wide, guardrails and/or personal fall arrest systems must still be used. 10. 3.Avoid kicking or knocking items off the scaffold. He fell 16 feet to the ground, sustaining facial fractures and other injuries. The footing of scaffolding must be sound and rigid, capable of supporting the weight. 1926.451 (b) (9) Single-point adjustable suspension scaffolds. Platforms shall be entirely planked and decked with space not more than one inch wide between the platforms and uprights; The platform shall not deflect more than 1/60 of the span when loaded; All platforms shall be kept clear of debris or other obstructions that may hinder the working clearance on the platform; Wood planks shall be inspected to see that they are graded for scaffold use, are sound and in good condition, straight grained, free from saw cuts, splits and holes; Platforms and walkways shall be at least 18 inches in width. c.10 c.30 feet Wood planks used for platforms on scaffolding shall be specifically graded for scaffold use by an approved grading agency. Compacted Gravel Roads - This type of road surface may have adequate strength but the material does not provide a smooth surface. Two feet What should you do before dismantling a scaffold? 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. 2. c.10 inches Note: A level should be used during assembly to make sure new structural components remain in line. The competent person is responsible for determining the safety and feasibility of installing and using safe means of access, based on site conditions and the type of scaffold involved. 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. 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. Jayden is a competent person; he has already performed a site evaluation. HV[o6~8%9N(Km -QTI*CJe'{tC^nAieAi?Ypqvi;y5P( s!u 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. Chicago, Illinois 60615, T: 773.702.9999 A competent person is one who is capable of identifying existing and predictable hazards in the surroundings or working conditions that are hazardous to employees, and who has authorization to take prompt corrective measures to eliminate them. Scaffold users must be trained in the recognition of the hazards associated with working on a scaffold they may be using including: the hazards of the particular scaffold that they intend to use; the nature of any fall, falling object, or electrical hazards; the correct procedures for dealing with electrical hazards and for erecting, maintaining, and disassembling the fall protection systems and falling object protection systems being used; the proper use of the scaffold and the proper handling of materials on the scaffold; the maximum intended load carrying capacities of the scaffolds used. The end points at each upright shall be no more than 48 inches. In order to assure scaffold stability, make sure: Note: One way to ensure a stable foundation when a sill is used is to secure it to the baseplate. Environmental Health and Safety is responsible for: Departments affected by this policy are responsible for: Employees affected by this policy are responsible for complying with the practices within the Scaffold Safety policy. The scaffolding components are clearly from various manufacturers. 1926.451 (f)(3) Scaffolds and scaffold components must be inspected for visible . -Make sure it was erected properly -Check that no structural alterations were made -Replace any missing ties or braces 1.Use gravel to fill in the uneven spots. Movement of the scaffold must be under the direction of a competent person. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. \text { to school } Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. The guardrail system must not deflect to a height less than 39 inches. \text { Target } \\ Utilizing the appropriate fall protection equipment / systems at heights above 10. 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. Load carrying information on components is available from the scaffold manufacturer. When hook on ladders is used, they must be provided with a rest platform every 35 feet. Select the correct answer and then click DONE. As they return to the site to continue their work, the first step they should take is to: Select the correct answer and then click DONE. endstream endobj 15 0 obj <> endobj 17 0 obj <> endobj 22 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageB]/XObject<>>>/Rotate 0/Type/Page>> endobj 1 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 5 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 8 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 11 0 obj <>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Type/Page>> endobj 54 0 obj <>stream In rare instances such as this, EHS will be called in to provide guidance as to the safety of the scaffold. Planks are stamped for scaffold approved loading and usage on one end. Exceptions: Guardrails are not required when: the front end of all platforms are less than 14 inches (36 centimeters) from the face of the work; outrigger scaffolds are 3 inches (8 centimeters) or less from the front edge; or, employees are plastering and lathing 18 inches (46 centimeters) or less from the front edge. Only the base coat gives the asphalt compressive strength.1. Scaffold should not be occupied while moving unless a competent person has determined it is safe to do so. This threshold differs from 29 . Select all that apply and then click DONE. 12. The end points of the cross bracing must be no more than 48 inches (1.3 meters) apart vertically. Scaffolds and components must be able to support at least four times the intended load. A ladder or other safe means of access must be provided. Make sure each platform is fully planked or decked between the front uprights and the guardrail supports. 4.Use cinder blocks to level the uneven ground. Employers must ensure that: How can you ensure that scaffolding will automatically remain plumb, level, and square? Tying, guying, or bracing may be needed to assure a safe and stable scaffold assembly. Hot asphalt paving (summer) - This type of asphalt (top coat) is soft when placed and then compacted with rollers. Direct access is acceptable when the scaffold is not more than14 inches horizontally and not more than 24 inches vertically from the other surfaces. 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. c. 3.5 inches 5.Oxygen deficiencies, When should a personal fall arrest system be inspected? To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. Should a personal fall arrest systems must be used when the scaffold must be under the.. 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