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. 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. 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. 1926.451(e . At a minimum, daily inspection and documentation of the condition of the scaffold and its ability to be occupied safely. Chicago, Illinois 60615, T: 773.702.9999 An access ladder or equivalent safe access must be provided. 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. 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. Any damaged or weakened scaffold part must be: Select the items that are a possible concern when inspecting wood planks. b.1 inch b.Two feet What are supported scaffold foundations set on to ensure stability? 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. With a 60-foot high scaffold, positive type ties should be spaced every ________ feet vertically and every ________ feet horizontally. 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". The spaces between platforms cannot exceed one inch. How can you ensure that scaffolding will automatically remain plumb, level, and square? 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. c.24 inches All brace connections must be secured. Independent lifelines should be protected from abrasion and wear. c.One mudsill per leg extending 6 inches beyond centerline of the pole Design and preplanning of the scaffold including weight limitations, scaffold type, fall protection, tie-offs, supports, etc. 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. Damaged or deteriorated equipment shall not be used. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Specific requirements are described below. Refusing to occupy a scaffold prior to the Competent Person providing documentation indicating that the scaffold has been inspected and deemed safe. 1.Wear personal fall arrest systems (PFAS). One means to support students is through the use of language scaffolds, which temporarily support students' language use in the classroom. Access shall be provided when scaffold platforms are more than 24 inches above or below the point of access. What is the most common type of supported scaffold? d.15, 17, Ramps and walkways _______ feet or more above lower levels must have guardrail systems. Tiebacks must not be secured to standpipes, vents, other piping systems, or electrical conduit. \text { Blackberry Pearl; } \$ 20 \\ d.2 inches, If the platform is 10 feet or less, it cannot exceed how many inches over the centerline support? Its critical to check to make sure scaffolds do not exceed their rated capacity. 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? No University employee shall erect scaffold greater than or equal to 20 feet. Baker, Perry, Bil-Jax) whenever frames are stacked more than one section high. Training employees working on the scaffolds to recognize the associated hazards and understand procedures to control or minimize those hazards; and. He fell, sustaining a concussion for which he was hospitalized. The footing of scaffolding must be sound and rigid, capable of supporting the weight. 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. d. Repair any defective scaffolding components. \text { Type of } \\ 4.Jump from one platform to another. Select the correct answer and then click DONE. Select the correct answer and then click DONE. 1926.451(e)(9) & (g) 9. Click on the button to see requirements for ladders on stair tower systems. 2.Electrical d.24 inches, On high scaffolds, all planks should be secured by being tied down with: Cross bracing is acceptable in place of a mid-rail when the crossing point is between 20 30 inches above the work platform or as a top rail when the crossing point is between 38 48 inches above the work platform. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. Check that steps and rungs of ladders and stairway-type ladders line up vertically with each other between rest platforms. Select all that apply and then click DONE. Stationary scaffolds over 125 feet in height and rolling scaffolds over 60 feet in height shall be designed by a professional engineer. front-end loaders and similar pieces of equipment are not used as support scaffold platforms, unless they have been specifically designed by the manufacturer for such use. Guardrail systems or guardrails are barriers erected along an unprotected or exposed side or edge of a walking-working surface You can correct any missed questions and check your \text { Advertised } tools, scrap material, chemicals, snow, ice, etc.) 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. 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. 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. To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. 4.Chemical burns 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). Load carrying information on components is available from the scaffold manufacturer. a.1/2 inch 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. O>wk`2^Ln?5NVqo Q|:i=p*/ FibrPP am0kk&LHQ7H>An2>8BMg,8i,k8Gx:`(U8B+@2If%) G:t'%$]VMc\RIq N4okHR-YK{_G_,P_1dmhzRsT,kw%SRmfV7_pDf*T7,c \79bj!1}dpB~9V&co7Sj. Select the correct answer and then click DONE. 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. Ensure scaffolds are altered only under the supervision and direction of a competent person. \end{array} & \begin{array}{l} Frequency of the training to be determined by EHS and department management, but should not exceed period of 5 years from the previous training. Select the correct answer and then click DONE. Scaffold collapse The proper erection of a scaffold is essential in preventing this particular hazard. 12. 2.Always use the proper ladder or stairs. In its simplest form, a scaffold is any temporary elevated or suspended work surface used to support workers and/or materials. -Make sure it was erected properly -Check that no structural alterations were made -Replace any missing ties or braces Ensure frames and panels are locked together to prevent uplift, where uplift can occur. The work area for each scaffold platform and walkway must be at least 18 inches (46 centimeters) wide. The competent person is the shop supervisor or her/his designated representative. Does Joel need to provide a portable ladder for his team to access the platform? 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. The scaffolding platform will be 32 inches from the ground. Make sure no gaps greater than 1 inch are permitted between adjacent planks or deck units, or between the platform and the uprights. Scaffold planks shall extend over their end support at least six (6) inches but no more than twelve (12) inches. (b) Googles? Scaffolds and components must be able to support at least four times the intended load. You must cordon off the area prior to erecting or dismantling scaffolds above: Select the items below that must be considered when using scaffolding. Rolling scaffold must not be used on sloped surfaces. Before erecting a scaffold, the first step is to: that apply to the following statement and then click DONE. 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 following sections can be referenced for specific guidelines when using scaffolds at Princeton. 3.Metal There are many types of scaffolds, both supported and suspended. Then this must be inspected when conditions change, such as sunny conditions, warming temperatures, etc. It is generally applied as a thin coat over a base coat and takes several days to achieve its designed strength. c.After it has been used 3. \text { Featured } Ensuring all affected employees follow the prescribed practices within this policy; and. 2. Key comparative information for Samsung, Apple, and Google follows. a.One mudsill per leg 5.Use taglines if a load could swing and hit the scaffold. 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. 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 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. Select the correct answer and then click DONE. TypeofAdvertisementTelevisionProductAdvertisedBlackberryTargetMarketStudents-backtoschoolProductInformationFeaturedBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections. 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. \end{array} & \begin{array}{l} 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. 1.Store materials away from the 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. 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. 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. . Wood decking - This may lend itself for use as a foundation. What should you do before dismantling a scaffold? Determine if fall protection is feasible during the erecting process. The team has been unable to work on the project due to heavy rain over the last two days. Direct access from another surface is acceptable when the scaffold is not more than 14 inches horizontally and not more than 24 inches vertically from the other surfaces. The competent person / trainer shall be verified to be of sufficient knowledge, skill set, and experience to provide said training. the forklift is not moved horizontally while the platform is occupied. d.Two mud sills per leg, Scaffolds must be erected, dismantled, moved, or altered only under the supervision of a(n) ________. b.Once a week The scaffolding components are clearly from various manufacturers. footings are capable of supporting the loaded scaffold without settling or displacement. Make sure frames and panels are joined together vertically by coupling or stacking pins or equivalent means. Scaffolding is widely used during construction and renovation activities. d.Add additional poles to support the scaffolding. A scaffold is a temporary structure erected to support access or working platforms. 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. 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. b.6 Two feet What should you do before dismantling a scaffold? Fabricated frame scaffolds are the most common type of scaffold because they are versatile, economical, and easy to use. Replace any missing ties or braces. Before each use Providing a scaffold to the user that is free from recognizable and preventable hazards (i.e. (1) A type of supported scaffold set on wheels or casters (2) A simple device consisting of a platform resting on brackets attached to a ladder (3) A uniquely designed scaffold consisting of a platform supported by moveable brackets on vertical poles (1)Mobile Scaffold (2) Ladder Scaffold (3) Pump Jack Scaffold Training of other competent persons, scaffold erectors, and users. Have cross-cleats securely nailed at regular intervals not exceeding 500 millimetres. 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. must be plumb (exactly vertical) and braced to prevent swaying and displacement. d.35 feet, The top rail of a guardrail system must be installed how many inches above the platform? Select the correct answer and then click DONE. Is the change in Samsungs cash flow on total assets ratio favorable or unfavorable? You will receive a message if you forgot to answer one of the questions. Ensure hook-on or attachable ladders are installed as soon as scaffold erection has progressed to the point that permits safe installation and use. 09/18/2013. What is the widest gap permitted between adjacent planks or deck units, or between the platform and the uprights of a scaffold? b. \hline \text { Television } & \text { Blackberry } & \begin{array}{l} 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. Uplift is the separation of a frame from the frame below it. Specific requirements for one type each ofsupported scaffold (tubular welded frame) and suspended scaffold (two-point suspension) are included in the sections below. Compute the recent two years cash flow on total assets ratio for Samsung. Select the correct answer and then click DONE. 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. 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. 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. 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. uuid:1f2371a8-90ab-42b0-a1cd-a86bdbf5cef5 Select the correct answer and then click DONE. \text { to school } Counterweights shall be secured by mechanical means to the outrigger beams. The competent person must inspect the area to determine if this is a firm footing (see Answer to Question 3). Separation of frames can occur in high winds (uplift), or when workers climb endframes, overload the platform, 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? Select all that apply and then click DONE. Supported scaffolds consist of one or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid support. 2.Toss tools and other items from the scaffold. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. 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. b.12, 16 Visit the Aerial Work Platforms web page to learn more about the specific requirements for aerial work platform use at Princeton. a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site . The riser height must be uniform, and the stair angle must be between 40 and 60 degrees from the horizontal. 4. 1.Use gravel to fill in the uneven spots. 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. All scaffolding shall be plumb and level. This scaffold has no guardrails and is not fully planked. a.One foot Sand, gravel, masonry units, rolls of roofing felt, and other such materials shall not be used as counterweights. Be sure scaffolding stays level and plumb as erection progresses. To control the risk of a scaffold falling or collapsing, employers must assure that scaffolds are built within OSHA standards relating to strength and structural integrity. 1926.451 (f)(3) Scaffolds and scaffold components must be inspected for visible . Before erecting the scaffold, a number of factors must be accounted for. Notifying the competent person of any safety concerns associated with the erection, conditions, use, and / or maintenance of the scaffold. Maximum intended load and load-carrying capacities of scaffolds used. Supported scaffold poles, frames, uprights, etc. Prior to occupation scaffold erectors must notify the competent person that the scaffold has been erected and is ready to be inspected. Please answer all of the questions before checking your quiz answers. b. 2. b. Contacting and coordinating with the Competent Person regarding any issues associated with the erection of a scaffold. Read the material in each section to find the correct answer to each quiz question. Scaffolding in this Guide means the individual components, for example tubes, couplers Which of the events increase potential GDP and which decrease it? At what height must employees use fall protection while working on a scaffold? 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? The team cannot wait any longer for the weather to clear. When are workers on scaffolding most vulnerable to fall hazards? Wood planks used for platforms on scaffolding shall be specifically graded for scaffold use by an approved grading agency. Make sure standpipes, vents, electrical conduit, etc., which may give way under the force of a fall, are not being used as anchorage points. A self-supporting scaffold is one or more work platforms supported from below by outriggers, brackets, poles, legs, uprights, posts, frames or similar rigid supports. 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. This threshold differs from 29 . Make sure integral (built-in ladder) scaffold access frames: Stair towers have many specific design requirements. The scaffolding will extend twenty feet into the air. Contact EHS for assistance and guidance in any of the duties associated with being a Competent Person. Scaffolds are never as safe as the foundations they are built on. d.Five times, Which would provide a more stable foundation? forklifts are not used to support scaffold platforms, unless: the entire platform is attached to the fork; and. d. 14 feet, What must be worn at all times while working from scaffolding? Scaffolds must be erected, dismantled, or moved only by properly trained workers under the supervision of a competent person. For a scaffold to be safe, it must be erected: . foundations are set on base plates, mud sills, and other adequate firm foundations. uuid:F4AC72E838E6DC1181DF85762784E02C Only those items specifically designed as counterweights must be used. Materials: Steel or plastic banding must not be used as a toprail or a midrail. 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. Before erecting a scaffold, the first step is to: a.Perform a site evaluation. Select the correct answer and then click DONE. 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. 3.String ). 4 feet Nature of electrical, fall hazards and falling object hazards in the work area; Proper handling of materials on scaffolds; Proper erecting, maintaining and disassembling of fall protection systems; Proper construction, use, placement and care in handling of scaffolds; and. The platform of a two-point suspension scaffold must not be more than 36 inches wide unless designed by a qualified person, and must be surrounded with a standard guardrail and toe board. The standard requires employers to protect each employee on a scaffold more than 10 feet (3.1 m) above a lower level from falling to that lower level. 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. 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