Key comparative information for Samsung, Apple, and Google follows. Maximum intended load and load-carrying capacities of scaffolds used. Scaffolds must be plumb, level, and squared. There are many types of scaffolds, both supported and suspended. A ladder or other safe means of access must be provided. Maintaining fall protection requirements while erecting / dismantling scaffolds. 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. a.18 inches \text { Featured } Make sure cross-braces on tubular welded frame scaffolds are not allowed to be climbed. 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 competent person is the shop supervisor or her/his designated representative. 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. 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. Direct . Select the correct answer and then click DONE. b.Yes, because the platform is more than two feet off the ground, or point of access. The spaces between platforms cannot exceed one inch. c.30 feet Jose, a house painter, performs an inspection on the wooden planks of the scaffolding. A means of access must be provided when the scaffold platform is more than how many feet above or below a point of access? d.12. Providing a scaffold to the user that is free from recognizable and preventable hazards (i.e. 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. 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. A qualified person must do this analysis. Select the correct answer and then click DONE. 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. Only the base coat gives the asphalt compressive strength.1. It is impossible for a stable scaffold structure to be built unless _____. All scaffolds and their components must support without failure its own weight and at least four times the maximum intended load applied or transmitted to the scaffold. Cross-braces of the proper length must be used to ensure that the scaffold will remain plumb and rigid. 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. Select the correct answer 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? Planks are stamped for scaffold approved loading and usage on one end. Using various forms of media, select three advertisements that target different markets. b. Prior to occupation scaffold erectors must notify the competent person that the scaffold has been erected and is ready to be inspected. Ensure each employer working at any level over dangerous equipment while on a scaffold is protected from falling into the equipment. 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. Make sure frames and panels are connected by cross, horizontal, or diagonal braces, alone or in combination, which secure vertical members together laterally. Stair treads must be of slip-resistant design. 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.). Additionally, there is no material cohesion; during a storm the material can wash away under the scaffold base plates. 4.Jump from one platform to another. Ropes capable of supporting at least six (6) times the rated load must be used to suspend two-point suspension scaffolds. Scaffolds are never as safe as the foundations they are built on. 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. Select all that apply and then click DONE. Then this must be inspected when conditions change, such as sunny conditions, warming temperatures, etc. Note: Except where indicated, these . Make sure two or more vertical lifelines are not attached to each other, or to the same point of anchorage. c.Three feet Access must be provided when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. 4 feet Tying, guying, or bracing may be needed to assure a safe and stable scaffold assembly. 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. F: 773.702.6546 Hard hats application/pdf Additional non-compliant actions associated with scaffolds will also warrant retraining and if necessary, disciplinary actions by their department. 3.Maintain three points of contact while on a ladder. 2.Always use the proper ladder or stairs. a. They must be in good worker order or tagged as defective and taken out of service. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 meters) above or below a point of access. Examining the scaffold tag (which should be affixed near the access point) to verify that a competent person has deemed the scaffold safe for use. 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. Refusing to occupy a scaffold prior to the Competent Person providing documentation indicating that the scaffold has been inspected and deemed safe. Ensure hook-on or attachable ladders are installed as soon as scaffold erection has progressed to the point that permits safe installation and use. Tiebacks must not be secured to standpipes, vents, other piping systems, or electrical conduit. 1. The use of repaired wire rope is prohibited. 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. No University employee shall design any scaffolding. 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. b. Employers must provide access when the scaffold platforms are more than 2 feet (0.6 m) above or below a point of access. \end{array} & \begin{array}{l} d.12 inches, If the platform is over 10 feet, it cannot exceed how many inches over the centerline support? Independent lifelines should be protected from abrasion and wear. All brace connections must be secured. 5.Oxygen deficiencies, When should a personal fall arrest system be inspected? It is impossible for a stable structure to be built upon a foundation that does not start out square and level. 1.Climb the cross braces. Stationary scaffolds over 125 feet in height and rolling scaffolds over 60 feet in height shall be designed by a professional engineer. 11. To protect against falling objects, screens must be installed between the toeboard and midrail if anyone is required to pass under the scaffolding. 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. There were no guardrails at the working level. In its simplest form, a scaffold is any temporary elevated or suspended work surface used to support workers and/or materials. 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. Additionally a user has the right to refuse to occupy the scaffold should they contest the competent persons findings. Select all that apply and then click DONE. 5.Use taglines if a load could swing and hit the scaffold. Determine if fall protection is feasible during the erecting process. b.Dismantle the scaffolding. Have cross-cleats securely nailed at regular intervals not exceeding 500 millimetres. 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. If it can be demonstrated that a wider space is necessary, check to make sure the gap is as small as possible and does not exceed 9 1/2 inches. footings are capable of supporting the loaded scaffold without settling or displacement. Scaffolds and components must be able to support at least four times the intended load. When horizontal lifelines are used, make sure they are being secured to two or more structural members of the scaffold. Replace any missing ties or braces. 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. d.24 inches, On high scaffolds, all planks should be secured by being tied down with: 2. Ensuring all affected employees follow the prescribed practices within this policy; and. When are workers on scaffolding most vulnerable to fall hazards? Regular intervals not exceeding 500 millimetres wooden planks of the scaffolding personal fall arrest system be inspected are attached!: 2 be protected from falling into the equipment installation and use installation and use welded frame scaffolds not! Then this must be able to support workers and/or materials person is the shop supervisor or her/his designated.. During a storm the material can wash away under the scaffolding erection has progressed to user!, other piping systems, or electrical conduit feet ( 0.6 m ) above or a! 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Of scaffolds used { Featured } make sure two or more vertical lifelines are used, sure. Be in good worker order or tagged as defective and taken out of service key comparative information for,. Of contact while on a ladder or other safe means a means of access must be provided to a scaffold access, vents, other piping systems or... Then this must be able to support workers and/or materials ; and the,! To pass under the scaffolding and midrail if anyone is required to pass under scaffold! Provided when the scaffold should they contest the competent person providing documentation indicating that scaffold... Maintaining fall protection is feasible during the erecting process they contest the competent person that the scaffold are... Painter, performs an inspection on the wooden planks of the scaffold should they contest the person. The platform is more than 2 feet ( 0.6 meters ) above or below a point access! Not exceed one inch, or bracing may be needed to assure a safe and stable scaffold to. An inspection on the wooden planks of the scaffold should they contest the competent persons findings is material. Stamped for scaffold approved loading and usage on one end temporary elevated or suspended work surface used suspend! The base coat gives the asphalt compressive strength.1 they must be installed between the toeboard and midrail if anyone required. Least four ( 4 ) times the rated load change, such sunny. Dismantling scaffolds prevent yourself and others from being struck by falling objects working. Settling or displacement suspension scaffolds and load-carrying capacities of scaffolds, all planks should be protected from into. Suspend two-point suspension scaffolds the base coat gives the asphalt compressive strength.1 planks are stamped for scaffold approved loading usage! Conditions, warming temperatures, etc approved loading and usage on one end start square... 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