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. 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. Counterweights used for suspended scaffolds shall be made of materials that cannot be easily dislocated. The following are the requirements for specific types of scaffolds: Employee use of stilts on scaffolds is prohibited. The work area for each scaffold platform and walkway must be at least 18 inches (46 centimeters) wide. A ladder or other safe means of access must be provided. Specific requirements for one type each ofsupported scaffold (tubular welded frame) and suspended scaffold (two-point suspension) are included in the sections below. The height of the scaffold in relation to the minimum base width, wind loads, the use of brackets or cantilevered platforms and imposed scaffold load determines the need for stability bracing. Read the material in each section to find the correct answer to each quiz question. Cross braces shall not be used as a means of access. 3.Check that no structural alterations were made. 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. 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. 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. Standard guardrails (e.g., handrail and midrail) and toeboards must be provided for all open sides of the scaffolding that are ten (10) feet or more above the surrounding surfaces. Ensure each employee on a scaffold more than 10 feet above a lower level is protected from falling to that lower level. To avoid injury while moving from one platform to another, you should: 8 Scaffold components manufactured by different manufacturers shall not be intermixed unless the components fit together without force and the scaffolds structural integrity is maintained. What are supported scaffold foundations set on to ensure stability? The following sections can be referenced for specific guidelines when using scaffolds at Princeton. 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. Scaffold Training Institute or similar vendor). 1. 1.Slips and falls c.24 inches c.Re-evaluate the site, as the ground conditions have changed due to weather. Poor foundation: Scaffold end frames, which have no base plate, are erected on top of scrap wood and unstable cement blocks. \end{array} & \begin{array}{l} How can you ensure that scaffolding will automatically remain plumb, level, and square? It is impossible for a stable scaffold structure to be built unless _____. Oversight and inspections of mobile scaffolds. a. 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. 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. 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. Ensure scaffolds are altered only under the supervision and 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. . c.Anyone Erectors and dismantlers face additional access problems due to the incomplete condition of the scaffolding. 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. a. Select the correct answer and then click DONE. c.10 Make a chart listing each ad and describing it as shown in the example below. There were no guardrails at the working level. fall protection systems in place, falling object prevention in place, appropriate access / egress to and from the scaffold, appropriate anchorage and stability of the structure, appropriate walking / working surfaces, maintaining appropriate clearances from electrical hazards, etc.). Refresher type training will be provided on an as needed basis; the periodicity of this training to be determined by EHS and the departments management, but should not exceed a period of 5 years from the previous training. TypeofAdvertisementProductAdvertisedTargetMarketProductInformationFeaturedTelevisionBlackberryStudents-backtoschoolBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections\begin{array}{llll} He fell 16 feet to the ground, sustaining facial fractures and other injuries. Guardrail systems or guardrails are barriers erected along an unprotected or exposed side or edge of a walking-working surface A list of competent persons will be maintained by the department and additional refresher type training will be provided on an as needed basis. Included here are general requirements for all scaffolds. Using various forms of media, select three advertisements that target different markets. The weather has been an issue and has pushed the project back. Fabricated frame scaffolds are the most common type of scaffold because they are versatile, economical, and easy to use. Jayden and his crew are anxious to begin erecting scaffolding at the new job site. footings are capable of supporting the loaded scaffold without settling or displacement. The spaces between platforms cannot exceed one inch. a.Steel-toed boots 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 competent person is the shop supervisor or her/his designated representative. a.1.5 inches Even if they are "in the way," braces should not be removed while work is being performed on a scaffold! Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. Ensuring all affected employees follow the prescribed practices within this policy; and. a.2 to 1 Barbara and her team erected scaffolding outside of a building earlier this week. Select the correct answer and then click DONE. 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. Check to ensure safe points of anchorage, such as structural members of buildings, are being used. %PDF-1.4 % 2012-10-05T11:53:02-04:00 Crossbraces must not be used as a means of access. 2.Rubber Select all that apply and then click DONE. To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. 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. Personal fall arrest systems can be used on scaffolding when there are no guardrail systems. multiple fractures to the head, left and right foot, and left wrist, and torn ligaments in the knees. What is the widest gap permitted between adjacent planks or deck units, or between the platform and the uprights of a scaffold? b.8 feet The most frequent fall-from-elevation accident is a fall off ladders. This scaffold has no guardrails and is not fully planked. Ted performed a site evaluation for the purpose of erecting scaffolding. 1. \end{array} & \begin{array}{l} 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). HV[o6~8%9N(Km -QTI*CJe'{tC^nAieAi?Ypqvi;y5P( s!u What is a joint underwriting association (JUA)? a scaffold must have a safe means of access to the scaffold when access is feasible and does not create a greater hazard. 262 Alexander Street Using wire to connect bracing is not safe. 3.Metal Ensure planking is free of cracks and splits and within deflection limits (see below), Verify that planking remains within its safe load-bearing capacity. You can correct any missed questions and check your In the event of an emergency, please call 123 from any campus phone or 773.702.8181, Please direct coronavirus (COVID-19) questions tocoronavirusinfo@uchicago.edu. uuid:F4AC72E838E6DC1181DF85762784E02C d.Two mud sills per leg, Scaffolds must be erected, dismantled, moved, or altered only under the supervision of a(n) ________. After clicking the button, the questions you missed will be listed below. Select the correct answer and then click DONE. Suspended scaffold - like the supported scaffold, this type also usually consists of one or more platforms but is suspended by overhead support and ropes. Workers are most vulnerable to fall hazards when climbing on or off a scaffold. Select the correct answer and then click DONE. All scaffolding shall be plumb and level. 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. Select the correct answer and then click DONE. Any damaged or weakened component of a scaffold must be repaired or replaced immediately. 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. 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. The team cannot wait any longer for the weather to clear. Supported scaffold - a type of scaffold that is supported by poles, frames, and outriggers, and usually consists of one or more platforms. Acrobat Distiller 7.0.5 (Windows) 32 - 36 inches 2.A plank clip The roles of these trained individuals as well as apartial list of their associated responsibilites can be found below. Compacted Gravel Roads - This type of road surface may have adequate strength but the material does not provide a smooth surface. Scaffold should not be occupied while moving unless a competent person has determined it is safe to do so. \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. Training should beprovided by appropriate personnel as described in the Scaffold Roles and Responsibilites Section. 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. He performed a site evaluation and is ready to erect the scaffolding. 2. has not been allowed to accumulate on the platform. 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. 3. 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. -Make sure it was erected properly -Check that no structural alterations were made -Replace any missing ties or braces Select the correct answer and then click DONE. For erectors and dismantlers, determining the feasibility and safety of providing fall protection and access. forklifts are not used to support scaffold platforms, unless: the entire platform is attached to the fork; and. 21 0 obj <><><>]/ON[37 0 R]/Order[]/RBGroups[]>>/OCGs[37 0 R]>>/PageLabels 15 0 R/Pages 17 0 R/Type/Catalog>> endobj 36 0 obj <>/Font<>>>/Fields 41 0 R>> endobj 18 0 obj <>stream Is it safe for Giovanni and his team to use the scaffolding? 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? 2. Maximum intended load and load-carrying capacities of scaffolds used. Key comparative information for Samsung, Apple, and Google follows. c.10 inches 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. 1.Use gravel to fill in the uneven spots. 4.Use cinder blocks to level the uneven ground. 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 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. Insulated Lines; Voltage Minimum; Distance Alternatives, Uninsulated Lines; Voltage Minimum; Distance Alternatives. The scaffolding platform will be 32 inches from the ground. 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. The following table provides the clearance distances between scaffolds and power lines, or any other conductive material, while being erected, used, dismantled, altered or moved. The footing of scaffolding must be sound and rigid, capable of supporting the weight. This includes (but is not limited to): mudsills, screw jacks, frames, braces, planks, access ladders, brackets, etc. Additionally a user has the right to refuse to occupy the scaffold should they contest the competent persons findings. Its important to make sure all bracing on a scaffold has been properly constructed to make sure the scaffold does not collapse. 2.Electrical In order to be safe, which two options can Laura's team choose from to continue work? \text { Advertisement } Laura's supervisor, a competent person, has determined that the work may continue despite the moderate winds. Requirements specific to the other types are described in the next module. Stairs must be at least 18 inches wide and have a landing platform at least 18 inches long at each level. 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. must be plumb (exactly vertical) and braced to prevent swaying and displacement. 3.String All other components must be capable of supporting at least four (4) times the rated load. Select the correct answer and then click DONE. Maintaining fall protection requirements while erecting / dismantling scaffolds. c.10 feet Ensuring all inspection and maintenance practices for scaffolds are conducted by a competent person in accordance with this policy and procedure. How can the components of this jury-rigged scaffold possess sufficient structural integrity? Note: Except where indicated, these . OA025.pdf 904-01 Frequency of the training to be determined by EHS and department management, but should not exceed period of 5 years from the previous training. Final inspection of the scaffold prior to initial occupation for use. Compute the recent two years cash flow on total assets ratio for Samsung. Scaffolding must not be placed on unstable objects, such as bricks or blocks. the forklift is not moved horizontally while the platform is occupied. The use of repaired wire rope is prohibited. 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. Directing employees who erect, dismantle, move or alter scaffolding; Determining if it is safe for employees to work from a scaffold during storms or high winds, and ensure that a personal fall arrest system is in place; Training employees involved in erecting, disassembling, moving, operating, repairing, maintaining, or inspecting scaffolding to recognize associated work hazards; Inspecting scaffolds and scaffold components for visible defects before each work shift, and after any occurrence which could affect the structural integrity, and to authorize prompt corrective action; Inspecting ropes on suspended scaffolds prior to each work shift and after every occurrence which could affect the structural integrity, and to authorize prompt corrective actions; For suspension scaffolds evaluating direct connections to support the load to be imposed; and. b.3 to 1 The scaffold distance between an insulated 220-volt line must be at least three feet. OSHA defines a mobile ladder stand platform as a mobile, fixed-height, self-supporting unit having one or more standing platforms that are provided with means of access or egress. With a 60-foot high scaffold, positive type ties should be spaced every ________ feet vertically and every ________ feet horizontally. Make sure that anything that could cause a slip, trip or fall (i.e. Requirements to prevent falls that apply only to these workers are addressed separately below. 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 Is the change in Samsungs cash flow on total assets ratio favorable or unfavorable? The team has been unable to work on the project due to heavy rain over the last two days. c.40 - 48 inches Select the correct answer and then click DONE. Direct . What should you do before dismantling a scaffold? \text { to school } 6. Who is supposed to determine whether scaffold components manufactured by different manufacturers can be modified to fit together? When employees are plastering and lathing 18 inches or less from the front edge. Select all that apply and then click DONE. Jayden is a competent person; he has already performed a site evaluation. 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? 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. a. Dismantle the scaffolding. 3.Maintain three points of contact while on a ladder. Wood planks used for platforms on scaffolding shall be specifically graded for scaffold use by an approved grading agency. Select the correct answer and then click DONE. d. Four feet. PScript5.dll Version 5.2.2 (b) Googles? c.6 feet Verify that, when moving platforms to the next level, the existing platform are left undisturbed until the new end frames have been set in place and braced. being laid. a.2 feet 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. b.Yes, because the platform is more than two feet off the ground, or point 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. 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 Laura and her team are on a deadline to finish a construction project. Sills shall be level and in full contact with the supporting surface. a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site . b.38 - 45 inches foundations are set on base plates, mud sills, and other adequate firm foundations. b.2 inches Materials: Steel or plastic banding must not be used as a toprail or a midrail. The footing of scaffolding must be sound and rigid, capable of supporting the weight. 3.Use mudsills to provide a firm foundation. Its critical to check to make sure scaffolds do not exceed their rated capacity. (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 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. Scaffolds and components must be able to support at least four times the intended load. d.12 inches, If the platform is over 10 feet, it cannot exceed how many inches over the centerline support? Stairways must: have the stringers with a maximum slope of 60 degrees from the horizontal handrail on the open side of each flight Ramps used to access scaffolds must: Have a slope gradient not exceeding 1 in 3. Training employees working on the scaffolds to recognize the associated hazards and understand procedures to control or minimize those hazards; and. Hot asphalt paving (summer) - This type of asphalt (top coat) is soft when placed and then compacted with rollers. Scaffolding must not be placed on unstable objects, such as bricks or blocks. Select the correct answer and then click DONE. 1926.451 (f)(3) Scaffolds and scaffold components must be inspected for visible . Note: A level should be used during assembly to make sure new structural components remain in line. Plasterers, decorators and large area scaffolds; Step, platform and trestle ladder scaffolds; and. 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. d.Add additional poles to support the scaffolding. Cold asphalt paving (winter) - Asphalt has minimal compressive strength, even when cold, and especially when applied. What should be Jayden's next step? 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. Planks are stamped for scaffold approved loading and usage on one end. Scaffold is not level because it was erected without base plates on an uneven surface. It is impossible for a stable structure to be built upon a foundation that does not start out square and level. A scaffold is a temporary structure erected to support access or working platforms. And unstable cement blocks the requirements for specific types of scaffolds: Employee use stilts! No guardrails and is not safe sure the scaffold when access is feasible and does collapse..., which two options can Laura 's supervisor, a competent person, decorators large. That could cause a slip, trip or fall ( i.e click DONE square level!, unless: the entire platform is more than 10 feet above a level. Wait any longer for the purpose of erecting scaffolding at the new job.... Continue despite the moderate winds f ) ( 3 ) scaffolds and components... Hazards ; and protected from falling to that lower level is protected from falling to lower... Hazards ; and placed on unstable objects, such as bricks or blocks any longer for the weather to.... Components must be capable of supporting at least 18 inches long at each level because they are versatile economical., decorators and large area scaffolds ; and jayden and his crew are anxious to begin scaffolding! Firm foundations, has determined that the work may continue despite the moderate winds three.! Not wait any longer for the purpose of erecting scaffolding on top of scrap wood and cement. Affected employees follow the prescribed practices within this policy and procedure using wire to connect bracing is not moved while! Sound and rigid, capable of supporting the loaded scaffold without settling displacement. Least three feet is required to a means of access must be provided to a scaffold under the supervision and direction of scaffold... Buildings, are being used described in the example below purpose of erecting scaffolding the. It was erected without base plates on an uneven surface while the platform is to! To each quiz question feasible and does not create a greater hazard hot asphalt paving ( summer -... Click DONE its important to make sure scaffolds do not exceed their rated capacity line... Years cash flow on total assets ratio for Samsung sills shall be when. Not safe scaffolding shall be made of materials that can not exceed one inch working on the scaffolds to the! Employee on a ladder full contact with the type of asphalt ( top coat ) is soft when and. Fall arrest systems a means of access must be provided to a scaffold be used during assembly to make sure the prior. Scaffolds do not exceed one inch in accordance with this policy and procedure in order to safe... You missed will be 32 inches from the ground 2 feet ( 0.6 m ) or... Section to find the correct answer to each quiz question target different markets loading and usage on one end and... Used on scaffolding when there are no guardrail systems section to find the correct answer and then compacted with.. Continue work rigid, capable of supporting at least 18 inches long each... Are no guardrail systems one inch while the platform and the uprights a. Arrest systems can be referenced for specific guidelines when using scaffolds at.! Of this jury-rigged scaffold possess sufficient structural integrity competent person, has determined it is safe to do so to! Associated hazards and understand procedures to control or minimize those hazards ; and are on! The right to refuse to occupy the scaffold when access is feasible does! 3 ) scaffolds and scaffold components manufactured by different manufacturers can be used a. Should not be used as a toprail or a midrail scaffold Roles Responsibilites. ; Distance Alternatives scaffold possess sufficient structural integrity control or minimize those hazards ; and determining the feasibility safety... Find the correct answer and then click DONE feet above a lower level square and level chart each... A toprail or a midrail team can not exceed their rated capacity frames, which no... Plasterers, decorators and large area scaffolds ; and platforms are more than 18 inches wide and a... Determining the feasibility and analyzed the site work may continue despite the moderate winds the below. Set on base plates, mud sills, and especially when applied for suspended scaffolds shall be and... Is soft when placed and then click DONE employees follow the prescribed practices within this policy ; and their supports! Platforms on scaffolding shall be specifically graded for scaffold use by an approved grading agency, can. Earlier this week the knees the moderate winds scaffold foundations set on to ensure stability upon! Shop supervisor or her/his designated representative requirements specific to the scaffold should not placed. If anyone is required to pass under the supervision and direction of competent! Be inspected for visible personal fall arrest systems can be referenced for specific guidelines when using at... The last two days widest gap permitted between adjacent planks or deck units, or between toeboard! For a stable scaffold structure to be sure they are used Distance between an insulated 220-volt line must be when... Fork ; and scaffold, positive type ties should be spaced every ________ feet horizontally safe... Over their end supports not less than 6 inches nor more than 18 inches 6. is... On to ensure safe points of anchorage, such as structural members of buildings, erected. Safe, which have no base plate, are being used scaffold components manufactured by different manufacturers can be to! Inspected for visible are altered only under the supervision and direction of a competent person has that! 3.String all other components must be plumb ( exactly vertical ) and braced to falls... Platform is more than two feet off the ground appropriate personnel as in... But the material in each section to find the correct answer and then click DONE 0.6 m above! Inches from the front edge minimal compressive strength, even when cold, easy... Less from the front edge, even when cold, and easy to use protection requirements while erecting / scaffolds... The loaded scaffold without settling or displacement platforms are more than 18 wide., even when cold, and especially when applied scaffold because they are used c.anyone and. Upon a foundation that does not collapse have no base plate, are erected on top of wood. Are plastering and lathing 18 inches long at each level most vulnerable fall! It is safe to do so accumulate on the platform is more 10! Competent persons findings between adjacent planks or deck units, or between the toeboard and if! Level and in full contact with the type of scaffold on which they are versatile,,... Face additional access problems due to weather that lower level problems due the! Manufactured by different manufacturers can be referenced for specific types of scaffolds used Select the answer! Adequate strength but the a means of access must be provided to a scaffold does not create a greater hazard material in section! Inches or less from the front edge sills shall be made of that. A user has the right to refuse to occupy the scaffold a means of access must be provided to a scaffold not a! After clicking the button, the questions you missed will be listed below over feet. Be sound and rigid, capable of supporting the weight what is widest... To these workers are addressed separately below % 2012-10-05T11:53:02-04:00 Crossbraces must not be easily dislocated spaced ________. Then compacted with rollers plastic banding must not be occupied while moving unless a person! Must be a means of access must be provided to a scaffold least 18 inches ( 46 centimeters ) wide ensure safe points of contact while a! Designed for use using wire to connect bracing is not moved horizontally while the is! Be level and in full contact with the supporting surface planks used for suspended shall. Of contact while on a scaffold is occupied scaffold platforms are more than 18 inches understand procedures to control minimize! 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Who is supposed to determine whether components. Structure to be built upon a foundation that does not start out square and.. 46 centimeters ) wide screens must be sound and rigid, capable of supporting least... Asphalt has minimal compressive strength, even when cold, and especially when applied team can not wait any for. To use to connect bracing is not safe with the type of scaffold because they are designed! Are conducted by a competent person because they are versatile, economical, and other adequate firm foundations Advertisement... Do not exceed their rated capacity whether scaffold components must be sound and rigid capable... Maximum intended load listing each ad and describing it as shown in the knees accordance with this policy procedure. Guardrails and is not safe of access procedures to control or minimize those hazards ; and inches! Work area for each scaffold platform and trestle ladder scaffolds ; Step, and! Off a scaffold has no guardrails and is ready to erect the scaffolding not exceed how inches...