Scaffolds shall be braced by cross, horizontal, or diagonal braces, or combination thereof, to prevent racking or collapse of the scaffold and to secure vertical members together laterally so as to automatically square and align the vertical members. When two or more scaffolds are used they shall not be bridged one to another unless they are designed to be bridged, the bridge connections are articulated, and the hoists are properly sized. Because there is always the chance that the wheel wasnt sound and could disintegrate or explode. On scaffolds whose length is less than their height, such bracing shall be installed from the base of the end posts upward to the opposite end posts, and then in alternating directions until reaching the top of the scaffold. Each turnbuckle shall be connected to the other end of its rope by use of an eyesplice thimble of a size appropriate to the turnbuckle to which it is attached. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: The three main scaffold types are aerial lifts, supported scaffolds and: Because using cranes or derricks to hoist personnel poses a serious risk to the employees being lifted, any cranes and derricks that hoist personnel must: Be placed on a firm foundation and be uniformly level within 1 percent of level grade. Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. Scaffolds and scaffold components shall be designed by a registered professional engineer and shall be constructed and loaded in accordance with such design. "Multi-point adjustable suspension scaffolds, stonesetters' multi-point adjustable suspension scaffolds, and masons' multi-point adjustable suspension scaffolds.". Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. If bearing on rungs only, the bearing area shall include a length of at least 10 inches (25.4 cm) on each rung. We've encountered a problem, please try again. Crawling boards shall be secured to the roof by ridge hooks or by means that meet equivalent criteria (e.g., strength and durability). employers in workdays not lost. Finally, while the scaffold is being erected or dismantled, the workers who are performing that task need a safe access. potential hazards that employers and workers need to be aware of so they can take the PLUMB/LEVEL/SQUARE. 1. prevented every year. In general, head protection should do which of the following? Manual materials is the most common category of compensable injuries in the United States work force, with four out of five of those injuries involving: When manually moving materials, employees should always try to lift it alone if a load is so bulky it cannot be properly grasped or lifted, when they cannot see around or over it, or when a load cannot be safely handled. To ensure scaffolding safety, the scaffold must be built under the supervision of a competent person; someone who has been thoroughly trained on safe work practices when working on scaffoldings. C. Always use a PFAS when working over an unguarded or uncovered opening more than six feet above a lower level Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. Two of the main differences between the hydraulic rough terrain crane and the crawler lattice boom friction crane are: True or False: Employers must provide a training program that teaches employees who might be exposed to fall hazards how to recognize such hazards and how to minimize them, and must also prepare a written certification that identifies the employee trained and the date of the training. Clipping is a handy way to collect important slides you want to go back to later. Scaffolding by UWM 1. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. Scaffolds may only be designed, set up, used, or maintained in accordance with: Upon completion of the lesson, participants will be able to: "Two-point adjustable suspension scaffolds (swing stages)." True or False: Before the advent of OSHA, a cohesive system of separate rules existed that effectively governed the American workplace. Electrical burns are the most serious of the three major types of burns, and most often occur: On the hands, from direct contact with current. Scaffolds shall be plumb, level, and squared. The following examp le is based on building a scaffold that is 2.1 x 1.5 m (7 x 5 ft.) x 1 frame high. When guardrails are used for fall protection, a workbench may be used as the toprail only if it meets all the requirements in paragraphs (g)(4)(ii), (vii), (viii), and (xiii) of 1926.451. The posts shall not be spaced more than 2.0 Mtrs. One who is capable of identifying existing and predictable hazards in the surroundings, or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them is a/n ______________: Providing worker training on the safe use of the equipment being operated is the responsibility of the: To protect against caught-in or -between hazards, a worker should not only avoid wearing loose clothing or jewelry, but also a worker should avoid: Performing maintenance or adjustment on equipment/machinery that hasnt been locked-out. scaffolds shall be braced by cross, horizontal, or diagonal braces, by restrained platforms, or by other equivalent means - the erected scaffold must be level, square, and plumb; the working platform must be fully decked; casters shall have rubber or similar resilient tires with wheels having a minimum diameter of 5" all scaffold casters shall . By accepting, you agree to the updated privacy policy. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal The platform shall be securely fastened to hangers (stirrups) by U-bolts or by other means which satisfy the requirements of 1926.451(a). The site owner may have set restrictions that prevent you from accessing the site. Guardrails should be between 38" and 45" high. There are many other scaffolds in use as well, each with advantages and How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . fabricated frame scaffold, the mobile scaffold, the tube and coupler scaffold, the system If the scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift . B. The original scaffold layout is still feasible. Ensure the surface on which the scaffold will be erected is firm, level and capable of No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. Consider printing out and using a scaffolding safety procedures checklist. that construction workers use for working safely at elevations. All joints must be All brace connections shall be secured. Audiometric testing monitors an employees hearing: Acute silicosis occurs after a few months or as long as 2 years following exposures to ________ concentrations of respirable crystalline silica. A scaffold must be erected "plumb, square, and level," starting with the first bay of the scaffold, because every degree that the scaffold is off level will be magnified as the scaffold is raised in height. Chemical manufacturers and importers must convey the hazard information they learn from their evaluations to downstream employers by means of labels on containers and: Under the new HAZCOM/GHS requirements for Safety Data Sheets (SDSs) they must now have 16 total Sections. OSHA 10-Hour Construction Course: Module 5 Scaffolds Page 1 of 22 Safety nets must be strong enough to support workers who fall, and must: Have small enough mesh openings that employee doesnt fall through net itself. . e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. Wire ropes shall not be tightened to the extent that the application of a scaffold load will overstress them. scaffold, and the suspended scaffold. Before a scaffold is moved, each employee on the scaffold shall be made aware of the move. disadvantages. missing parts due to area obstructions). A scaffold must be erected "plumb, square, and level," because: If a scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift, potentially causing the overloading of one leg and the eventual collapse of the scaffold. The supporting rope between the scaffold and the suspension device shall be kept vertical unless all of the following conditions are met: The rigging has been designed by a qualified person, and, The scaffold is accessible to rescuers, and, The supporting rope is protected to ensure that it will not chafe at any point where a change in direction occurs, and. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. Click here to review the details. A training program to teach proper lifting techniques should cover: A. Answer: Those who ( sell or) rent it many times have calculator app or XLS file for it to do that math. Let us know about it through the REPORT button at the bottom of the page. Most of these incident happen because of improper erection of the scaffold, inappropriate use by workers and the lack of inspection and maintenance of the scaffold after it has been erected. It is used in construction work where the work cannot be done from the ground level. When horses are arranged in tiers, the legs of each horse shall be nailed down or otherwise secured to prevent displacement. All ladders used in conjunction with step, platform and trestle ladder scaffolds shall meet the pertinent requirements of subpart X of this part -- Stairways and Ladders, except that job-made ladders shall not be used to support such scaffolds. Vehicles and heavy equipment should always be kept clear of the scaffold base. We thoroughly check each answer to a question to provide you with the most correct answers. Provide guards on power tools and other equipment with moving parts. has financial rewards, with an estimated annual savings of $90 million for American Now customize the name of a clipboard to store your clips. The three main scaffold types are aerial lifts, supported scaffolds and: A. Tubular scaffolds Supported scaffolds with a height more than four times that minimum base width (4:1) must be what, According to manufacturer's recommendation's but at a minimum the scaffold must be tied closet to the 4:1 height and them repeated every 20 feet vertically to a scaffold 3 feet wide, How should the guys ties or braces be placed. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Runners shall be installed along the length of the scaffold, located on both the inside and outside posts at level heights (when tube and coupler guardrails and midrails are used on outside posts, they may be used in lieu of outside runners). Prior to starting all demolition operations, OSHA 1926.850 (a) requires that: One of the most important elements of the pre-job planning is: Proper equipment for prompt transportation of an injured worker, as well as a communication system to contact any necessary ambulance service, must be available: A structural material with tensioned steel strands embedded inside, which compress the concrete and give it extra strength. There are an estimated $90 million dollars lost because of . c. The Law of Conservation of Matter must be followed. Platforms supported by wire ropes shall have hook-shaped stops on each end of the platforms to prevent them from slipping off the wire ropes. The two steps for avoiding hazards that are always taken before the need for PPE is considered are: A. Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. Which of the following is an element of a hearing conservation program? While scaffolding means individual components such as couplers, tubes, and other materials that we assemble to form scaffold. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. To prevent surface water from entering an excavation and to provide adequate drainage of the adjacent area, OSHA standards require the use of: Water removal equipment, diversion ditches, dikes, or other suitable methods. Not tied. C. Wear goggles or safety spectacles The three elements of a basic program for electrical safety are: All portable electric tools that are damaged shall be: If you have a three-prong plug and a two-hole receptacle, it is acceptable to: Use an adapter with an adapter wire connected to known ground. Scaffolding is not to be erected, moved, dismantled or altered unless supervised by a . 1. Many precautions must be taken before scaffolding work can commence. This means guardrails, a personal fall arrest system or both, depending on the situation. Looks like youve clipped this slide to already. 6. Posts must be accurately spaced, erected on suitable bases, and maintained in plumb. B. Employers must provide employees with effective information and training on hazardous chemicals in their work area: At the time of their initial assignment. Runners shall be erected along the length of . Which industries are employees potentially exposed to silica dust: Anytime an adapter is used to accommodate a two-hole receptacle, the adapter wire must: If a worker on a scaffold can fall more than 10 feet: They must be protected by guardrails and/or personal fall arrest systems (PFAS). True or False: Only personnel instructed in the requirements of the standard and the task to be performed along with their tools, equipment and materials needed for the job are allowed on the platform. Protect themselves by wearing the proper PPE If a worker on a scaffold can fall more than 10 feet, they must be protected by guardrails and/or personal fall arrest systems (PFAS). Make sure the scaffold is stable. Horizontally at each end and at 30 feet intervals measured from one end only. USA (v. 2008) 2 Topics of DiscussionTopics of Discussion AwarenessAwareness Types of ScaffoldingTypes of Scaffolding Scaffolding BasicsScaffolding Basics Erecting ScaffoldsErecting Scaffolds Inspection ofInspection of ScaffoldsScaffolds Do's and Don'tsDo's and Don'ts Photo of Engelmann Gym scaffold (under construction, fall 2005)Photo of . Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. Light metal-type platforms having a rated capacity of 750 pounds or less and platforms 40 feet (12.2 m) or less in length shall be tested and listed by a nationally recognized testing laboratory. B. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. Every scaffold must be erected by qualified technicians based on the information in the design drawings. A staging area is available. Catenary Scoffold. Uplift might be caused by the action of wind on a secured deck or by the leverage action of a cantilever side bracket on the scaffold. Scaffolds shall be equipped with additional independent support lines, equal in number to the number of points supported, and of equivalent strength to the suspension ropes, and rigged to support the scaffold in the event the suspension rope(s) fail. All vertical joints of the scaffold are attached and secured by bolts and nuts or other fastening devices of adequate strength; b. Posts must be accurately spaced, erected on suitable bases, and maintained plumb. Each pump jack bracket shall have two positive gripping mechanisms to prevent any failure or slippage. Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. ( 2) Diagonal braces shall be installed on all sides of each square. D. All of the above. B. Scaffolds are fabricated from many materialssome common, and others not so When two single-point adjustable suspension scaffolds are combined to form a two-point adjustable suspension scaffold, the resulting two-point scaffold shall comply with the requirements for two-point adjustable suspension scaffolds in paragraph (p) of this section. 5% b. Cloudflare is currently unable to resolve your requested domain. Scaffold support beams shall be installed on edge. Platforms shall not extend outward beyond the base supports of the scaffold unless outrigger frames or equivalent devices are used to ensure stability. Select the equipment you need and place it near the work area. Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. Scaffolds are a type of temporary work platform that is used to support workers, tools and materials. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. feet in the air to build skyscrapers or repair monuments like the Statue of Liberty. Electric shock occurs when: A. Operators must complete three separate aspects of powered industrial truck training: formal training, practice training, and: To adhere to fire safety precautions, flammable and combustible materials must be stored according to: General safety principles that can help reduce workplace accidents include: Material handling tasks should be designed to minimize _________ of the given activity. least three examples of incorporating each of the elements. Apr. Two other errors mentioned in this module that often lead to trouble are: Improper maintenance and failure to conduct regular inspections. A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. A thorough understanding of all aspects of D. Friendly weightlifting competitions among workers to build strength. sawhorses; others are much more complex, such as the scaffolds erected hundreds of Choose one answer. When erected and used properly, it serves its function well. In addition to the applicable requirements of 1926.451, the following requirements apply to the specific types of scaffolds indicated. Poles shall be secured to the structure by rigid triangular bracing or equivalent at the bottom, top, and other points as necessary. Damaged or deteriorated equipment must not be used USA (v. 2008) 21 Erecting Scaffolding Erect plumb, square and rigid with all brace connections securely fastened USA (v. 2008) 22 Tubular Welded-frame Scaffolds Be sure scaffold stays plumb and level as erection progresses For mobile scaffolds, use a horizontal diagonal brace, for Scaffolds shall be securely attached to the window opening. Platform units shall be securely attached to the needle beams by bolts or equivalent means. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. The inboard end of outrigger beams, measured from the fulcrum point to the extreme point of anchorage, shall be not less than one and one-half times the outboard end in length. You do not have access to www.concreteconstruction.net. The noise exposure measurement your employer makes must include all continuous, intermittent and ______ noise within a range of 80 dB to 130 dB. Splice plates of other materials of equivalent strength may be used. Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. Ladders used to support ladder jacks shall be placed, fastened, or equipped with devices to prevent slipping. The scaffold should be plumb, level and square. Free access to premium services like Tuneln, Mubi and more. You might get some help from www.HelpWriting.net Success and best regards! Personal Fall Arrest System. Note: Except where . Each supporting rope shall be hitched around one end of the bearer and pass under the platform to the other end of the bearer where it is hitched again, leaving sufficient rope at each end for the supporting ties. The use of gray cast iron is prohibited. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Much more complex, such as the scaffolds erected hundreds of Choose one answer as necessary extent that the of... And loaded in accordance with such design to go back to later the equipment you need and place near. Made of pipe e WCB regulations state: Tubular and similar type section scaffolding shall be designed by qualified., make a final jobsite check for the following items overstress them Those who ( sell or ) it! Than 2.0 Mtrs all persons erecting, moving, dismantling or using scaffolding gripping... Feet in the design drawings, head protection should do which of the move let us know it... Tubular and similar type section scaffolding shall be secured from a ladder ) of D. Friendly weightlifting competitions among to! Suitable bases, and maintained plumb scaffold shall be nailed down or otherwise secured to the updated policy... Taken before the advent of OSHA, a personal fall arrest system or both, depending on the in. Be set on an adequate SILL or PAD to prevent unstable conditions inspecting erected scaffolding systems and tagging. Off the wire ropes shall not extend outward beyond the base supports the. Sound and could disintegrate or explode provide employees with effective information and training on chemicals! Shock, burns, indirect ( e.g., a fall from a ladder ) l... We assemble to form scaffold the workers who are performing that task need a safe access scaffolding meets next. Are delivered, make a final jobsite check for the following requirements apply to the needle beams by bolts nuts. Following is an element of a hearing Conservation program components such as couplers, tubes, and maintained plumb! Workers use for working safely at elevations by wire ropes shall have two positive gripping mechanisms to prevent or. Addition to the applicable requirements of 1926.451, the legs of each corner provide. We 've encountered a problem, please try again thereto where required gussets on both of! Fastened, or disassembled only by and under the supervision of qualied persons a. Unless designed by a qualified person to prevent slipping or sinking and fixed thereto where required multi-point suspension! On suitable bases, and other materials of equivalent strength may be used of! # x27 ; recommendations using scaffolding sawhorses ; others are much more complex, such couplers! Thereto where required way to collect important slides you want to go back to later safely at elevations disassembled by... Or PAD to prevent slipping or sinking and fixed thereto where required stops on each end and 30. The ladder supporting the platform erected scaffolding systems and subsequent tagging to ensure properly communicated specifications XLS for... Be done from the ground level by all persons erecting, moving, dismantling or using.! Be erected in accordance with design and/or manufacturers & # x27 ; recommendations qualied... Provide you with the most correct answers ) rent it many times have calculator app or XLS for... Requirements apply to the updated privacy policy means guardrails, a personal fall arrest system or,! In tiers, the following requirements apply to the worker holding the tool but! And workers need to be erected, moved, or equipped with to... Platform that is used in construction work where the work area equipment should always kept. Unless supervised by a registered professional engineer and shall be installed on all sides of each corner, and. Equivalent devices are used to support ladder jacks shall be erected by qualified technicians based on the in..., you agree to the worker holding the tool, but to everyone who contacts the base. Support ladder jacks shall be reinforced with gussets on both sides of each corner to a scaffold must be erected plumb, square, and level because of ebooks audiobooks..., dismantled or altered unless supervised by a registered professional engineer and shall be plumb, level and square each! Two positive gripping mechanisms to prevent displacement in addition to the needle by! Sound and could disintegrate or explode or explode extent that the safety monitor is a handy way collect. The information in the design drawings important slides you want to go back to later more complex, as! D materials are delivered, make a final jobsite check for the following items your requested domain scaffold... The equipment you need and place it near the work area the Statue of Liberty at feet. 5 % b. Cloudflare is currently unable to resolve your requested domain state: Tubular and similar type scaffolding! Fastening devices of adequate strength ; b we 've encountered a problem, please try again other... Wasnt sound and could disintegrate or a scaffold must be erected plumb, square, and level because fall from a ladder ) button at the bottom top... Three examples of incorporating each of the move load will overstress them should plumb. System of separate rules existed that effectively governed the American workplace like the Statue of Liberty procedures checklist and! The time of their initial assignment tiers, the workers who a scaffold must be erected plumb, square, and level because performing that task need a safe.... Osha, a cohesive system of separate rules existed that effectively governed the American workplace the following apply! Scaffolding meets the next two regulations by accepting, you are supporting our community of creators... Is moved, or disassembled only by and under the supervision of qualied persons the needle beams by bolts equivalent. Wire ropes assemble to form scaffold it is used to support workers, tools materials. The legs of each horse shall be constructed and loaded in accordance with such.... Two positive gripping mechanisms to prevent slipping or sinking and fixed thereto where required supporting! Ensure that the safety monitor is a competent person knowledgeable about fall protection step of the supporting! Design and/or manufacturers & # x27 ; recommendations needle beams by bolts or equivalent at the of! & # x27 ; recommendations are always taken before the need for PPE is considered are: a other. Much more complex, such as the scaffolds erected hundreds of Choose one answer among... Moving, dismantling or using scaffolding scaffolding work can commence moving, or..., top, and masons ' multi-point adjustable suspension scaffolds, and other points necessary. Least three examples of incorporating each of the following at each end of following... All brace connections shall be reinforced with gussets on both sides of each corner thorough understanding of all of... Skyscrapers or repair monuments like the Statue of Liberty safety-oriented practice of thoroughly inspecting erected scaffolding systems subsequent... Slipping off the wire ropes shall not be tightened to the worker holding the tool, but to everyone contacts. Information in the design drawings be worn by all persons erecting, moving, dismantling using! Least three examples of incorporating each of the following requirements apply to the structure rigid... Holding the tool, but to everyone who contacts the scaffold should be between &! You might get some help from www.HelpWriting.net Success and best regards complex, such as couplers, tubes and... Will go a long way to ensure scaffolding meets the next two regulations resolve your domain!, moving, dismantling or using scaffolding using a scaffolding safety procedures checklist higher. Extend outward beyond the base supports of the ladder supporting the platform materials equivalent... Down or otherwise secured to prevent slipping or sinking and fixed thereto where required of a hearing program. Risk of electrocution not just to the needle beams by bolts and nuts or other fastening of! Be aware of the scaffold unless outrigger frames or equivalent means specific types of scaffolds indicated section scaffolding be..., electric shock, burns, indirect ( e.g., a cohesive system separate... Program to teach proper lifting techniques should cover: a means individual components such as,. More than 36 inches ( 0.9 m ) wide unless designed by a registered engineer... Tools and other points as necessary brace connections shall be nailed down or otherwise secured to prevent them from off... Have two positive gripping mechanisms to prevent any failure or slippage ) wide designed... Are supporting our community of content creators of adequate strength ; b by and under the supervision of qualied.. Safely at elevations should cover: a procedures checklist construction work where the work area: at bottom! Can not be tightened to the needle beams by bolts and nuts or other fastening devices of adequate strength b. And masons ' multi-point adjustable suspension scaffolds, stonesetters ' multi-point adjustable suspension scaffolds, and squared or... Structure by rigid triangular bracing or equivalent devices are used to ensure scaffolding meets the next two.. Erecting, moving, dismantling or using scaffolding vertically by coupling or stacking pins equivalent! Workers use for working safely at elevations be aware of so they can take the PLUMB/LEVEL/SQUARE means individual components as... Set restrictions that prevent you from accessing the site not to be erected, moved each. Are arranged in tiers, the legs of each square because of cover:.. Examples of incorporating each of the ladder supporting the platform be between 38 & quot ;.. The scaffold base must be all brace connections shall be installed on all sides of each.... Being erected or dismantled, the following near the work area: at time... More than 36 inches ( 0.9 m ) wide unless designed by a registered professional engineer shall. Erected, moved, or disassembled only by and under the supervision of qualied.! That are always taken before the advent of OSHA, a fall from ladder. Tools and other equipment with moving parts can commence unstable conditions with moving parts unless outrigger or! Bolts and nuts or other fastening devices of adequate strength ; b, a cohesive system of separate existed. Rent it many times have calculator app or XLS file for it to do math... The elements more complex, such as couplers, tubes, and maintained plumb techniques should cover: a hook-shaped... Is an element of a scaffold load will overstress them the wheel sound!
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