Two tiebacks installed at opposing angles are required when a perpendicular tieback cannot be installed. 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. Workers are most vulnerable to fall hazards when climbing on or off a scaffold. Make sure the planks are not allowed. 904-01 With a 60-foot high scaffold, positive type ties should be spaced every ________ feet vertically and every ________ feet horizontally. Make sure employees do not use cross-braces as a means of access. a.Competent person Any damaged or weakened component of a scaffold must be repaired or replaced immediately. Guardrails shall be installed along the open sides and ends before releasing the scaffold for use by the employees, other than erection or dismantling crews. The top edge height on supported scaffolds manufactured or placed in service before January 1, 2000, and on all suspended scaffolds where both a guardrail and a personal fall arrest system are required shall be between 36 45 inches; When mid-rails, screens, mesh, intermediate vertical members, solid panels, or equivalent structural members are used, they shall be installed between the top edge of the guardrail system and the scaffold platform; When mid-rails are used, they shall be installed at a height midway between the top edge of the guardrail system and the scaffold platform; When screens and mesh are used, they shall extend from the top edge of the guardrail system to the scaffold platform, and along the entire opening between the supports; When intermediate members are used, they shall not be more than 19 inches apart; Each top rail or equivalent member of a guardrail system shall be capable of withstanding a force of at least 100 pounds for systems on single-point adjustable suspension or two-point adjustable suspension scaffolds, and at least 200 pounds for guardrail systems installed on other scaffolds; When the loads specified above are applied in a downward direction, the top edge shall not drop below the height above the platform surface required above; Mid-rails, screens, mesh, intermediate vertical members, solid panels and equivalent structural members shall be capable of withstanding a force of at least 75 pounds for systems with a minimum 100 pound top rail capacity, and at least 150 pounds for systems with a minimum 200 pound top rail capacity; Guardrails shall be surfaced to prevent injury to an employee from punctures or lacerations and prevent snagging of clothing; The ends of all rails shall not overhang the terminal posts except when such overhang does not constitute a projection hazard; Steel or plastic banding shall not be used as a top rail or mid-rail; Manila or plastic (or other synthetic) rope being used for top rails or mid-rails shall be inspected by a competent person as frequently as necessary; and. Supported scaffold - a type of scaffold that is supported by poles, frames, and outriggers, and usually consists of one or more platforms. b.3 to 1 Select the correct answer and then click DONE. a.2 feet 1926.451(e)(1) . 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. Select the correct answer and then click DONE. 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 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. 2.Use bricks to bring the scaffolding level. 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. b. Select the correct answer and then click DONE. What is a joint underwriting association (JUA)? Erectors also must abide by all manufacturer recommendations and be capable of erecting scaffolds under the guidance of a competent person. Ensure frames and panels are locked together to prevent uplift, where uplift can occur. 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. 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. Training employees working on the scaffolds to recognize the associated hazards and understand procedures to control or minimize those hazards; and. Ensure scaffolds are altered only under the supervision and direction of a competent person. 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. He notices that there have been several large spills of paint over them. Employers must provide access 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. TypeofAdvertisementTelevisionProductAdvertisedBlackberryTargetMarketStudents-backtoschoolProductInformationFeaturedBlackberryPearl;$20discount;pinkorsilver;usetogete-mail,surftheWeb,andgetdirections. 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. Hot asphalt paving (summer) - This type of asphalt (top coat) is soft when placed and then compacted with rollers. Requirements specific to the other types are described in the next module. Ensure planking is free of cracks and splits and within deflection limits (see below), Verify that planking remains within its safe load-bearing capacity. Select all that apply and then click the DONE button. There were no guardrails at the working level. 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. Select the correct answer and then click DONE. d.Registered engineer, Guys, ties, or braces must be installed where horizontal members support inner and outer legs when the scaffold has a height/width ratio greater than: 8. What should Ted do? being laid. Make sure no gaps greater than 1 inch are permitted between adjacent planks or deck units, or between the platform and the uprights. When the scaffold work area is less than 18 inches (46 centimeters) wide, guardrails and/or personal fall arrest systems must be used. When scaffold platforms are more than 2 feet (0.6 m) above or below a point of access, portable ladders, hook-on ladders, attachable ladders, stair towers (scaffold stairways/towers), stairway-type ladders (such as ladder stands), ramps, walkways, integral prefabricated scaffold access, or direct access from another scaffold, structure, personnel a safe means of access shall be provided when a competent person has determined the feasibility and analyzed the site . 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. You will receive a message if you forgot to answer one of the questions. 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. 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. Check to make sure scaffold components made of dissimilar metals are not used together, unless a competent person has determined that galvanic action will not reduce the strength, through corrosion, of any component below OSHA standards. The riser height must be uniform, and the stair angle must be between 40 and 60 degrees from the horizontal. Fabricated frame scaffolds are the most common type of scaffold because they are versatile, economical, and easy to use. Select all that apply and then click DONE. What are some safe work practices you can follow to prevent yourself and others from being struck by falling objects while working on scaffolds? Its important to make sure components are compatible and made of similar metals, or scaffold failure could occur. The scaffold must be capable of supporting its own weight and at least how many times the maximum intended load applied to it? b.2 inches 2.Rubber 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. Make sure frames and panels are connected by cross, horizontal, or diagonal braces, alone or in combination, which secure vertical members together laterally. 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. The department shall maintain a list of all employees within the department who have been authorized (through both training and experience) as scaffold erectors; and provide notice to the employees who have been deemed to be authorized erectors. All scaffolding shall be plumb and level. Horizontal members are erected in a manner that creates a usable ladder and provides good hand hold and foot space. After clicking the button, the questions you missed will be listed below. This includes (but is not limited to): mudsills, screw jacks, frames, braces, planks, access ladders, brackets, etc. Employees shall be trained to demonstrate competency in the following areas: 5235 South Harper Court Outriggers must be used on narrow frame type scaffolds (i.e. 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". Included here are general requirements for all scaffolds. answers again. The competent person is the shop supervisor or her/his designated representative. No University employee shall erect scaffold greater than or equal to 20 feet. Note: Except where indicated, these . c.Re-evaluate the site, as the ground conditions have changed due to weather. Scaffold planks should extend over their end supports not less than 6 inches nor more than 18 inches. Select the correct answer and then click DONE. Only the base coat gives the asphalt compressive strength.1. a.Steel-toed boots 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. A qualified person must do this analysis. OSHA:Process Safety Management: Participation, Clinical Pharmacology Exam 2 - CHF & Angina, Elliot Aronson, Robin M. Akert, Timothy D. Wilson, Unternehemensfinanzierung in der EU und in de. OSHA has standards that apply specifically to the steps that must be taken to assure a stable scaffold base. 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