Maintaining fall protection requirements while erecting / dismantling scaffolds. Cross braces shall not be used as a means of access. 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. 09/18/2013. d.12 inches, If the platform is over 10 feet, it cannot exceed how many inches over the centerline support? 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. a.2 feet Scaffold collapse The proper erection of a scaffold is essential in preventing this particular hazard. This includes (but is not limited to): mudsills, screw jacks, frames, braces, planks, access ladders, brackets, etc. Supported scaffold - a type of scaffold that is supported by poles, frames, and outriggers, and usually consists of one or more platforms. 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 work area for each scaffold platform and walkway must be at least 18 inches (46 centimeters) wide. 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? 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. Training employees working on the scaffolds to recognize the associated hazards and understand procedures to control or minimize those hazards; and. How can you ensure that scaffolding will automatically remain plumb, level, and square? b.20 feet Be sure scaffolding stays level and plumb as erection progresses. 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. safety@uchicago.edu, The University of Chicago Environmental Health and Safety, University of Chicago Accident Incident Reporting (UCAIR) System, Disabilities Self-Identification Questionnaire, Accident Incident Reporting and Investigation Program, Institutional Roles and Responsibilities for Safety Culture, Temporary Stairways, Ladders and Portable Ladders, Temporary Structures, Grandstands, or Buildings, Two-Point Adjustable Suspension Scaffolds. Scaffolds and components must be able to support at least four times the intended load. Separation of frames can occur in high winds (uplift), or when workers climb endframes, overload the platform, Jayden and his crew are anxious to begin erecting scaffolding at the new job site. 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. 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. 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.). The riser height must be uniform, and the stair angle must be between 40 and 60 degrees from the horizontal. 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. Remove ties and braces. Therefore, employers are required to provide safe scaffold access. 5. Scaffolds are never as safe as the foundations they are built on. The footing of scaffolding must be sound and rigid, capable of supporting the weight. Requirements for Access to Scaffolds. Select the correct answer and then click DONE. Make sure portable, hook-on, and attachable ladders are positioned so as not to tip the scaffold. No University employee shall design any scaffolding. Crossbraces must not be used as a means of access. The use of shore scaffolds and lean-to-scaffolds is strictly prohibited. d.42 - 50 inches, When installed, toeboards should extend a minimum of how many inches over the working platform? . Cross-braces of the proper length must be used to ensure that the scaffold will remain plumb and rigid. 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? Sills shall be level and in full contact with the supporting surface. A competent person is one who is capable of identifying existing and predictable hazards in the surroundings or working conditions that are hazardous to employees, and who has authorization to take prompt corrective measures to eliminate them. Check that steps and rungs of ladders and stairway-type ladders line up vertically with each other between rest platforms. 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. Make sure no gaps greater than 1 inch are permitted between adjacent planks or deck units, or between the platform and the uprights. . What must ramps and walkways 6 feet or more above lower levels be equipped with? The means of access must be determined before erection of the scaffold and employees are never allowed to climb on cross braces for either vertical or horizontal movement. or strike the scaffold with tools, materials, etc. 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. Scaffold should not be occupied while moving unless a competent person has determined it is safe to do so. c.Anyone The use of repaired wire rope is prohibited. 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. 904-01 This scaffold has no guardrails and is not fully planked. a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site . Direct access is acceptable when the scaffold is not more than14 inches horizontally and not more than 24 inches vertically from the other surfaces. Using wire to connect bracing is not safe. \text { Type of } \\ 1.Wear personal fall arrest systems (PFAS). Select the correct answer and then click DONE. Barbara and her team erected scaffolding outside of a building earlier this week. This scaffold is overloaded and planks are strained. 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. Select the correct answer and then click DONE. 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. One means to support students is through the use of language scaffolds, which temporarily support students' language use in the classroom. 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. Scaffold Roles and Responsibilites Section. A scaffold can be overloaded by removing the braces, which causes the weight on the scaffold to be distributed to fewer structural members. Cold asphalt paving (winter) - Asphalt has minimal compressive strength, even when cold, and especially when applied. 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. Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. 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. 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 described in their applicable sections. 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. b.Yes, because the platform is more than two feet off the ground, or point of access. 6 inches Giovanni arrives at a jobsite as part of a team contracted to repair ductwork. 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. 22 inches Plasterers, decorators and large area scaffolds; Step, platform and trestle ladder scaffolds; and. 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