Environmental Health and Safety Maintaining fall protection requirements while erecting / dismantling scaffolds. b. Stairs must be at least 18 inches wide and have a landing platform at least 18 inches long at each level. 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. Inspecting all scaffold components prior to assembly to insure that components used are of similar material and in good repair before becoming a part of the completed scaffold. All scaffolds and their components must support without failure its own weight and at least four times the maximum intended load applied or transmitted to the scaffold. Specific requirements are described below. 2.A plank clip Laura's supervisor, a competent person, has determined that the work may continue despite the moderate winds. -Make sure it was erected properly -Check that no structural alterations were made -Replace any missing ties or braces An employee was on a scaffold that was being dismantled when the scaffold collapsed. All planking or platforms must be overlapped a minimum of twelve (12) inches and secured from movement. The scaffolding components are clearly from various manufacturers. footings are capable of supporting the loaded scaffold without settling or displacement. Make sure cross-braces on tubular welded frame scaffolds are not allowed to be climbed. 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. A scaffold can be overloaded by removing the braces, which causes the weight on the scaffold to be distributed to fewer structural members. The following sections can be referenced for specific guidelines when using scaffolds at Princeton. . 3.Avoid kicking or knocking items off the scaffold. the forklift is not moved horizontally while the platform is occupied. 12. Work shall not be permitted during high winds. Check to ensure safe points of anchorage, such as structural members of buildings, are being used. Scaffolds are never as safe as the foundations they are built on. Select all that apply and then click DONE. unstable objects are not used to support scaffolds or platform units. Supported scaffolds consist of one or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid support. 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. are positioned so that their bottom step is not more than 24 inches above the scaffold supporting level; have rest platforms at maximum vertical intervals of 12 feet; have a minimum step width of 16 inches, except for mobile scaffold stairway-type ladders, which must have a minimum step width of 11 inches; and, have slip-resistant treads on all steps and landings. Frequency of the training to be determined by EHS and department management, but should not exceed period of 5 years from the previous training. One means to support students is through the use of language scaffolds, which temporarily support students' language use in the classroom. Select the correct answer and then click DONE. Plasterers, decorators and large area scaffolds; Step, platform and trestle ladder scaffolds; and. Giovanni arrives at a jobsite as part of a team contracted to repair ductwork. 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. In its simplest form, a scaffold is any temporary elevated or suspended work surface used to support workers and/or materials. Contacting EHS if there is a concern regarding the erection of the scaffold. What do you need to do with a ladder that is defective? Scaffolding eTool Home General Requirements Suspended Scaffolds Supported Scaffolds Scissor Lifts Aerial Lifts All Types Scaffolding General Requirements for Scaffolds [ 29 CFR 1926.451] Capacity What are the capacity requirements for all scaffolds? Should he use those planks? No more than three workers are permitted to work at one time on suspension scaffolds with a working load of 750 pounds. Counterweights shall be secured by mechanical means to the outrigger beams. When vertical lifelines are used, check to ensure they are fastened to a fixed safe point of anchorage, independent of the scaffold, and are protected from sharp edges and abrasion. d. 8 feet, Except to remove such material, employees must not work on scaffolds covered in: He performed a site evaluation and is ready to erect the scaffolding. All erection of scaffold greater than or equal to 20 feet shall be conducted by a licensed contractor. Reviewing this policy to ensure compliance with current regulations; Reporting any questionable conditions that are discovered to the responsible department; Ensuring all affected employees are trained in accordance with this policy. Scaffold Training Institute or similar vendor). c.13, 15 a.1/2 inch 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. Ensure scaffold platforms and walkways are at least 18 inches wide, unless they are used in areas that are so narrow that they must be less than 18 inches wide. This scaffold is overloaded and planks are strained. For the current year, is Samsungs cash flow on total assets ratio better or worse than (a) Apples and 2.Electrical 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. 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. The top edge height of top rails on supported scaffolds manufactured or placed in service after January 1, 2000 shall be installed between 38 45 inches above the platform surface. Make sure the planks are not allowed. Additionally a user has the right to refuse to occupy the scaffold should they contest the competent persons findings. 2.Toss tools and other items from the scaffold. Select the correct answer and then click DONE. b.Dismantle the scaffolding. Select the correct answer and then click DONE. A ladder or other safe means of access must be provided. b.Two feet Single-point adjustable suspension scaffolds. d.5 to 1, The space between adjacent planks and the space between the plank and the uprights must be no more than: Scaffold components manufactured by different manufacturers shall not be intermixed unless the components fit together without force and the scaffolds structural integrity is maintained. Only the base coat gives the asphalt compressive strength.1. Guardrail systems or guardrails are barriers erected along an unprotected or exposed side or edge of a walking-working surface Sills shall be level and in full contact with the supporting surface. Baker, Perry, Bil-Jax) whenever frames are stacked more than one section high. 1926.451 (b) (9) \text { Advertised } Compute the recent two years cash flow on total assets ratio for Samsung. 21 0 obj
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Two feet What should you do before dismantling a scaffold? TypeofAdvertisementTelevisionProductAdvertisedBlackberryTargetMarketStudents-backtoschoolProductInformationFeaturedBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections. Providing a scaffold to the user that is free from recognizable and preventable hazards (i.e. c.10 inches Special consideration is required when scaffolding is to be erected on fill, soft or frozen ground. Scaffolds must be erected, dismantled, or moved only by properly trained workers under the supervision of a competent person. 4.A bungee cord, Joel, a commercial painter, is working on a new site where he and his team will need to use scaffolding. Base plates or screw jacks shall be in firm contact with both the sills and the legs of the scaffolding. c.4 to 1 c.Inspect the scaffolding for paint. Employers must provide access 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. 1.Climb the cross braces. 1.Slips and falls Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Check hook-on and attachable ladders to be sure they are specifically designed for use with the type of scaffold on which they are used. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. What are supported scaffold foundations set on to ensure stability? b.38 - 45 inches Cross braces shall not be used as a means of access. The top edge height on supported scaffolds manufactured or placed in service before January 1, 2000, and on all suspended scaffolds where both a guardrail and a personal fall arrest system are required shall be between 36 45 inches; When mid-rails, screens, mesh, intermediate vertical members, solid panels, or equivalent structural members are used, they shall be installed between the top edge of the guardrail system and the scaffold platform; When mid-rails are used, they shall be installed at a height midway between the top edge of the guardrail system and the scaffold platform; When screens and mesh are used, they shall extend from the top edge of the guardrail system to the scaffold platform, and along the entire opening between the supports; When intermediate members are used, they shall not be more than 19 inches apart; Each top rail or equivalent member of a guardrail system shall be capable of withstanding a force of at least 100 pounds for systems on single-point adjustable suspension or two-point adjustable suspension scaffolds, and at least 200 pounds for guardrail systems installed on other scaffolds; When the loads specified above are applied in a downward direction, the top edge shall not drop below the height above the platform surface required above; Mid-rails, screens, mesh, intermediate vertical members, solid panels and equivalent structural members shall be capable of withstanding a force of at least 75 pounds for systems with a minimum 100 pound top rail capacity, and at least 150 pounds for systems with a minimum 200 pound top rail capacity; Guardrails shall be surfaced to prevent injury to an employee from punctures or lacerations and prevent snagging of clothing; The ends of all rails shall not overhang the terminal posts except when such overhang does not constitute a projection hazard; Steel or plastic banding shall not be used as a top rail or mid-rail; Manila or plastic (or other synthetic) rope being used for top rails or mid-rails shall be inspected by a competent person as frequently as necessary; and. 1926.451(e)(9) & (g) d.Five times, Which would provide a more stable foundation? 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. b.One continuous mudsill under both legs The victim was climbing the end-frame of a three-tiered metal scaffold when a midrail pulled loose. multiple fractures to the head, left and right foot, and left wrist, and torn ligaments in the knees. a 1 b 2 c 3 d 4 Cold asphalt paving (winter) - Asphalt has minimal compressive strength, even when cold, and especially when applied. Note: Platforms may be coated periodically with wood preservatives, fire retardants, and slip-resistant finishes, provided they do not obscure the top or bottom wood surfaces. Any damaged or weakened component of a scaffold must be repaired or replaced immediately. Supported scaffold poles, frames, uprights, etc. 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. 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. Fabricated frame scaffolds are the most common type of scaffold because they are versatile, economical, and easy to use. d.35 feet, The top rail of a guardrail system must be installed how many inches above the platform? d. Repair any defective scaffolding components. Remove ties and braces. S/N 869-034-00107-6; cost $30 (foreign $37.50). 262 Alexander Street Stair treads must be of slip-resistant design. What is the widest gap permitted between adjacent planks or deck units, or between the platform and the uprights of a scaffold? Workers are most vulnerable to fall hazards when climbing on or off a scaffold. When erecting and dismantling tubular, welded-frame scaffolds, and end frames are used as climbing devices for access, make sure: Horizontal members are parallel, level, and not more than 22 vertical inches apart. \begin{array}{l} 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. 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. Crossbraces must not be used as a means of access. 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. Check that scaffolds and scaffold components are capable of supporting, without failure, their own weight and at least 4 times their maximum intended load. At a minimum, daily inspection and documentation of the condition of the scaffold and its ability to be occupied safely. a.16 inches 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. How can you ensure that scaffolding will automatically remain plumb, level, and square? . a.2 feet \text { Product } \\ Fall Protection. Ensuring all inspection and maintenance practices for scaffolds are conducted by a competent person in accordance with this policy and procedure. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. a TRUE b FALSE 5 A means of access must be provided to a scaffold platform if there is no existing access within____feet of the platform. The team cannot wait any longer for the weather to clear. All scaffolding shall have toe boards, screens, a guardrail system and/or debris nets as determined by a competent person. 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. \text { use to get e-mail, surf the } \\ Select the correct answer and then click DONE. b.Three times Any damaged or weakened component of a scaffold must be repaired or replaced immediately. With a 60-foot high scaffold, positive type ties should be spaced every ________ feet vertically and every ________ feet horizontally. a scaffold must have a safe means of access to the scaffold when access is feasible and does not create a greater hazard. Select the correct answer and then click DONE. Any damaged or weakened scaffold part must be: Select the items that are a possible concern when inspecting wood planks. 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. Erectors can solicit materials and components from other employees who may be on the ground, but the ultimate adding / subtracting of components to a scaffold shall be accomplished by an authorized scaffold erector. The footing of scaffolding must be sound and rigid, capable of supporting the weight. b.Incompetent person Manila or synthetic rope used for top rails must be inspected to ensure that the rope meets the strength requirement. 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. What should Ted do? Select all that apply and then click DONE. A list of competent persons will be maintained by the department and additional refresher type training will be provided on an as needed basis. Select the correct answer and then click DONE. Make sure two or more vertical lifelines are not attached to each other, or to the same point of anchorage. 1.Make sure it was erected properly. Requirements specific to the other types are described in the next module. HV[o6~8%9N(Km -QTI*CJe'{tC^nAieAi?Ypqvi;y5P(
s!u 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. This creates a dangerous situation during the freeze/thaw cycle (which can occur in the course of a day) causing the soil to swell or settle and may not result in a level rigid footing. 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. 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 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.1 1/2 inches 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. All employees are prohibited from working on scaffolds covered with snow, ice, or other slippery materials. 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 surfaces. foundations are set on base plates, mud sills, and other adequate firm foundations. and must be provided on any scaffold 10 feet or more above a lower level. Laura and her team are on a deadline to finish a construction project. a. 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. Check that direct access to or from another surface is permitted only when the scaffold is not more than 14 inches horizontally and not more than 24 inches vertically from the other surface. Ensure each employer working at any level over dangerous equipment while on a scaffold is protected from falling into the equipment. 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. Note: Except where indicated, these requirements also apply to manually propelled, pump jack, ladder jack, tube and coupler, and pole scaffolds, as well as the specialty scaffolds. He notices that there have been several large spills of paint over them. Erectors and dismantlers face additional access problems due to the incomplete condition of the scaffolding. b. Then this must be inspected when conditions change, such as sunny conditions, warming temperatures, etc. Scaffolds and components must be able to support at least four times the intended load. Damaged or deteriorated equipment shall not be used. Contact EHS for assistance and guidance in any of the duties associated with being a Competent Person. Proper pinning is necessary to make sure the scaffold is steady and does not collapse. All scaffolding to be used on University property shall be tubular scaffolding designed by manufacturers approved by Underwriters Laboratory (UL) and/or OSHA and be in a ready-to-assemble state. The department also to provide competent person with document indicating that they are competent persons representing their respective departments and shall agree to uphold all local, state, and federal rules and regulations as they relate to scaffolding. A scaffold is a temporary structure erected to support access or working platforms. d.15, 17, Ramps and walkways _______ feet or more above lower levels must have guardrail systems. Training of other competent persons, scaffold erectors, and users. 1.A number nine wire All scaffolding shall be plumb and level. Do not use unstable objects such as loose bricks, blocks of wood or concrete to shore up the uneven surface. 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. \text { discount; pink or silver; } \\ In rare instances such as this, EHS will be called in to provide guidance as to the safety of the scaffold. OA025.pdf Barbara and her team erected scaffolding outside of a building earlier this week. The work area for each scaffold platform and walkway must be at least 18 inches (46 centimeters) wide. b.20 feet Check to make sure frames are stacked, and that cross braces are of such length as will automatically keep the scaffold plumb, level, and square. application/pdf Using various forms of media, select three advertisements that target different markets. Rolling scaffold must not be used on sloped surfaces. The scaffold was not secured to wooden footing supports, nor was it tied to the building. 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. \end{array} This includes (but is not limited to): mudsills, screw jacks, frames, braces, planks, access ladders, brackets, etc. Both A & B (Hooks & Safety latches) Hoists shall be: All of the above Daily inspections need to include: Checking of the wire rope for damage or "caging" Hoists shall be inspected: Daily, prior to use Do not perform maintenance on a conveyor until: All hazardous energies are disconnected and blocked Chicago, Illinois 60615, T: 773.702.9999 All brace connections must be secured. The footing of scaffolding must be sound and rigid, capable of supporting the weight. b.1 inch A competent person must make the feasibility determination based on site conditions and the type of scaffold being erected or dismantled. 1926.451(e . b. Each worker on a suspended scaffold must be protected by a personal fall arresting system attached to an independent lifeline. 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. Scaffolding must not be placed on unstable objects, such as bricks or blocks. 1.Store materials away from the edge. Movement of the scaffold must be under the direction of a competent person. Read the material in each section to find the correct answer to each quiz question. uuid:1f2371a8-90ab-42b0-a1cd-a86bdbf5cef5 d.Choose access points. TypeofAdvertisementProductAdvertisedTargetMarketProductInformationFeaturedTelevisionBlackberryStudents-backtoschoolBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections\begin{array}{llll} Select the correct answer and then click DONE. Prior to occupation scaffold erectors must notify the competent person that the scaffold has been erected and is ready to be inspected. c.6 feet Cross-braces of the proper length must be used to ensure that the scaffold will remain plumb and rigid. He suffered As they return to the site to continue their work, the first step they should take is to: Oversight and inspections of mobile scaffolds. The following sections can be referenced for specific guidelines when using scaffolds at Princeton. Wood planks used for platforms on scaffolding shall be specifically graded for scaffold use by an approved grading agency. Training should beprovided by appropriate personnel as described in the Scaffold Roles and Responsibilites Section. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. There are many types of scaffolds, both supported and suspended. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. 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. PScript5.dll Version 5.2.2 b.18 inches Determine if fall protection is feasible during the erecting process. 5. a.5 Hard hats Click on the button to see examples of different types of foundations and related problems. Even if they are "in the way," braces should not be removed while work is being performed on a scaffold! 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: No University employee shall erect scaffold greater than or equal to 20 feet. Independent lifelines should be protected from abrasion and wear. Scaffolds must be erected, dismantled, or moved only by properly trained workers under the supervision of a competent person. He fell 16 feet to the ground, sustaining facial fractures and other injuries. Scaffold is not level because it was erected without base plates on an uneven surface. Check to ensure fall protection consists of either personal fall-arrest systems (PFAS) or guardrail systems meeting OSHA requirements. When the other end of the 2x4 slipped off the bucket, the employee did not let go of his end, and was pulled off the deck. 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. Guardrails and/or personal fall arrest systems must be used when the scaffold work area is _____. The competent person would need to know the individual scaffold base plate loading and if each one is below the maximum allowable deck loading.