Do not use unstable objects such as loose bricks, blocks of wood or concrete to shore up the uneven surface. a.16 inches For the current year, is Samsungs cash flow on total assets ratio better or worse than (a) Apples and Hard hats This scaffold is overloaded and planks are strained. Scaffolds are never as safe as the foundations they are built on. d.12. Select the correct answer and then click DONE. d.Add additional poles to support the scaffolding. 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. Barbara and her team erected scaffolding outside of a building earlier this week. 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. All other components must be capable of supporting at least four (4) times the rated load. c.10 inches Training of other competent persons, scaffold erectors, and users. All employees are prohibited from working on scaffolds covered with snow, ice, or other slippery materials. c.6 feet 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. What are the main hazards associated with erecting, dismantling, and working on scaffolds? Ensure scaffolds are altered only under the supervision and direction of a competent person. Refusing to occupy a scaffold prior to the Competent Person providing documentation indicating that the scaffold has been inspected and deemed safe. being laid. a.Two times a.5 2. All planking or platforms must be overlapped a minimum of twelve (12) inches and secured from movement. Scaffolding in this Guide means the individual components, for example tubes, couplers 1.Slips and falls The following sections can be referenced for specific guidelines when using scaffolds at Princeton. Independent lifelines should be protected from abrasion and wear. Acrobat Distiller 7.0.5 (Windows) 1.Climb the cross braces. Select all that apply and then click DONE. Hot asphalt paving (summer) - This type of asphalt (top coat) is soft when placed and then compacted with rollers. \text { discount; pink or silver; } \\ You must cordon off the area prior to erecting or dismantling scaffolds above: 1.People Please answer all of the questions before checking your quiz answers. 4. d.15, 17, Ramps and walkways _______ feet or more above lower levels must have guardrail systems. 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. ). The scaffold must be capable of supporting its own weight and at least how many times the maximum intended load applied to it? Scaffold should not be occupied while moving unless a competent person has determined it is safe to do so. 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. 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. d. Four feet. Training employees working on the scaffolds to recognize the associated hazards and understand procedures to control or minimize those hazards; and. Is the change in Samsungs cash flow on total assets ratio favorable or unfavorable? \end{array} \end{array} & \begin{array}{l} a. In its simplest form, a scaffold is any temporary elevated or suspended work surface used to support workers and/or materials. The scaffolding will extend twenty feet into the air. a.5 feet Requirements for Access to Scaffolds. In rare instances such as this, EHS will be called in to provide guidance as to the safety of the scaffold. The scaffolding components are clearly from various manufacturers. Workers are most vulnerable to fall hazards when climbing on or off a scaffold. Where platforms are overlapped to create a long platform, the overlap shall occur only over supports, and shall not be less than 12 inches unless the platforms are nailed; A platform greater than 10 feet in length shall not extend over its support more than 18 inches, unless it is designed and installed so that the cantilevered portion of the platform is able to support employees without tipping, or has guardrails which block employee access to the cantilevered end; A platform less than 10 feet in length shall not extend over its support more than 12 inches, unless it is designed and installed so that the cantilevered portion of the platform is able to support employees without tipping, or has guardrails which block employee access to the cantilevered end; Wood surface shall not be covered with opaque finishes, other than the edges for making identification; Platforms may be coated periodically with wood preservatives, fire-retardant finishes, and slip-resistant finishes; however, the coating shall not obscure the top or bottom wood surfaces; and. d.5 to 1, The space between adjacent planks and the space between the plank and the uprights must be no more than: The competent person shall be trained in accordance with the Occupational Safety and Health Administration (OSHA) and responsible for: Qualified persons shall be responsible for: No University employee shall design scaffolding. Check to ensure fall protection consists of either personal fall-arrest systems (PFAS) or guardrail systems meeting OSHA requirements. Key comparative information for Samsung, Apple, and Google follows. b.2 inches \text { Web, and get directions } d.Hearing protection. Stairs must be at least 18 inches wide and have a landing platform at least 18 inches long at each level. Horizontal members are erected in a manner that creates a usable ladder and provides good hand hold and foot space. d.6 inches, A means of access must be provided when the scaffold platform is more than how many feet above or below a point of access? Design and preplanning of the scaffold including weight limitations, scaffold type, fall protection, tie-offs, supports, etc. After answering all the questions, click on the "Check Quiz Answers" button to grade your quiz and see your score. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches.
Click on the button to see requirements for ladders on stair tower systems. Insulated Lines; Voltage Minimum; Distance Alternatives, Uninsulated Lines; Voltage Minimum; Distance Alternatives. 2.Electrical Ensure each employee on a scaffold more than 10 feet above a lower level is protected from falling to that lower level. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Make sure each platform is fully planked or decked between the front uprights and the guardrail supports. Sills shall be level and in full contact with the supporting surface. Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. The footing of scaffolding must be sound and rigid, capable of supporting the weight. When inspecting the surface conditions where the scaffolding will be erected, ask yourself: All wood planks used on scaffolds should be rated what grade? Training should beprovided by appropriate personnel as described in the Scaffold Roles and Responsibilites Section. Competent people shall only receive training from other competent people. Do not force members to fit. 21 0 obj
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a.15 feet 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. For a scaffold to be safe, it must be erected: . chubby 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. 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 front end of all platforms are less than 14 inches from the face of the work; and. Select the correct answer and then click DONE. You can correct any missed questions and check your \text { to school } The guardrail system must not deflect to a height less than 39 inches. Select the correct answer and then click DONE. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. 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. 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. a. Make sure cross-braces on tubular welded frame scaffolds are not allowed to be climbed. Scaffolds must be plumb, level, and squared. 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. The riser height must be uniform, and the stair angle must be between 40 and 60 degrees from the horizontal. Stationary scaffolds over 125 feet in height and rolling scaffolds over 60 feet in height shall be designed by a professional engineer. Is it safe for Giovanni and his team to use the scaffolding? Click on the button to see examples of different types of foundations and related problems. Screw jacks with base plates shall be used to compensate for uneven ground. c.10 8 d.42 - 50 inches, When installed, toeboards should extend a minimum of how many inches over the working platform? When the scaffold work area is less than 18 inches (46 centimeters) wide, guardrails and/or personal fall arrest systems must be used. 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. 8. 9. Laura's supervisor, a competent person, has determined that the work may continue despite the moderate winds. The team is given a set of scaffolding components to assemble. To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. A list of competent persons will be maintained by the department and additional refresher type training will be provided on an as needed basis. to prevent falls. [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 . or strike the scaffold with tools, materials, etc. 1. Make sure all brace connections are properly secured to prevent dislodging. a. Dismantle the scaffolding. Scaffolding must not be placed on unstable objects, such as bricks or blocks. 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. It is generally applied as a thin coat over a base coat and takes several days to achieve its designed strength. 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. 22 inches d. Repair any defective scaffolding components. 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. Its important to make sure components are compatible and made of similar metals, or scaffold failure could occur. Ensure that employees performing overhand bricklaying operations from a supported scaffold are protected from falling from all open sides and ends of the scaffold, except at the side next to the wall Before each use 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. Crossbraces must not be used as a means of access. b.Yes, because the platform is more than two feet off the ground, or point of access. the forklift is not moved horizontally while the platform is occupied. -Make sure it was erected properly -Check that no structural alterations were made -Replace any missing ties or braces 2.A plank clip a. Then this must be inspected when conditions change, such as sunny conditions, warming temperatures, etc. Contacting and coordinating with the Competent Person regarding any issues associated with the erection of a scaffold. \text { Advertisement } 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. c.Inspect the scaffolding for paint. 12. The end points at each upright shall be no more than 48 inches. Select the correct answer and then click DONE. Select all that apply and then click DONE. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 meters) above or below a point of access. Supported scaffold - a type of scaffold that is supported by poles, frames, and outriggers, and usually consists of one or more platforms. b.Three times 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. A competent persons responsibilities include (but are not limited to): Scaffold erectors are those employees who have been designated (based on training and experience) by the department to be the employees who are responsible for the erection and maintenance of department scaffolds on the Princeton University campus. Select the correct answer and then click DONE. Select the correct answer and then click DONE. \end{array} \\ 1.Snow Guardrail systems or guardrails are barriers erected along an unprotected or exposed side or edge of a walking-working surface The scaffold distance between an insulated 220-volt line must be at least three feet. foundations are set on base plates, mud sills, and other adequate firm foundations. Make sure frames and panels are connected by cross, horizontal, or diagonal braces, alone or in combination, which secure vertical members together laterally. 7. Using various forms of media, select three advertisements that target different markets. Sand, gravel, masonry units, rolls of roofing felt, and other such materials shall not be used as counterweights. Ensure scaffold components manufactured by different manufacturers are not allowed to be modified to make them fit together, unless a competent person determines that the resulting scaffold is structurally sound. 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? He performed a site evaluation and is ready to erect the scaffolding. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. 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. S/N 869-034-00107-6; cost $30 (foreign $37.50). 5. a. 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. Does Joel need to provide a portable ladder for his team to access the platform? Jose, a house painter, performs an inspection on the wooden planks of the scaffolding. Contacting EHS if there is a concern regarding the erection of the scaffold. No more than two workers are permitted to work at one time on suspension scaffold designed for a working load of 500 pounds. d.35 feet, The top rail of a guardrail system must be installed how many inches above the platform? What should be Jayden's next step? 1926.451(f)(3) Erecting and DismantlingWhen erecting and dismantling supported scaffolds, a competent person2 must determine the feasibility of providing a safe means of access and fall protection for these operations. 3. Included here are general requirements for all scaffolds. Scaffolding must not be placed on unstable objects, such as bricks or blocks. Make sure the planks are not allowed. Counterweights used for suspended scaffolds shall be made of materials that cannot be easily dislocated. \text { Target } \\ 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. c.After it has been used 2.Rubber A scaffold is a temporary structure erected to support access or working platforms. At a minimum, daily inspection and documentation of the condition of the scaffold and its ability to be occupied safely. Scaffolds shall be erected, moved or disassembled only under the supervision of qualified persons. The work area for each scaffold platform and walkway must be at least 18 inches (46 centimeters) wide. 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. For erectors and dismantlers, determining the feasibility and safety of providing fall protection and access. d. 14 feet, What must be worn at all times while working from scaffolding? 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. \text { Blackberry Pearl; } \$ 20 \\ The scaffold and its components must be capable of supporting four times the rated load. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Giovanni arrives at a jobsite as part of a team contracted to repair ductwork. uuid:F4AC72E838E6DC1181DF85762784E02C 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. Make sure employees do not use cross-braces as a means of access. c.20 inches A ladder or other safe means of access must be provided. He suffered Improper Access Leads to Serious Injuries. The scaffolding platform will be 32 inches from the ground. 1.Use gravel to fill in the uneven spots. The use of repaired wire rope is prohibited. Supported scaffolds consist of one or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid support. The competent person / trainer shall be verified to be of sufficient knowledge, skill set, and experience to provide said training. He fell 16 feet to the ground, sustaining facial fractures and other injuries. b. A ladder or other safe means of access must be provided. Select all that apply and then click DONE. By itself it is not normally a useable foundation material. No University employee shall design any scaffolding. 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. When placed and then compacted with rollers the front end of all platforms are less than 14 from. Are erected in a manner that creates a usable ladder and provides good hold. Stairs must be sound and rigid, capable of supporting at least 18 inches long each. Safe for Giovanni and his team to use the scaffolding that the scaffold must be plumb, level, squared... The change in Samsungs cash flow on total assets ratio favorable or unfavorable walkways _______ feet or more above levels! 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