Electricity travels in closed circuits, and its normal route is through a conductor. ", "Form scaffolds and carpenters' bracket scaffolds. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . Diagonal bracing in both directions shall be installed across the entire inside face of double-pole scaffolds used to support loads equivalent to a uniformly distributed load of 50 pounds (22.7 kg) or more per square foot (929 square cm). There might be one pair of protective eyewear for your task or station, rather than individual eyewear for each employee. Identify site specific hazards not identified in the preplanning stage. The scaffold must be erected and used in accordance with OSHA regulations. The mission of the Occupational Safety and Health Administration (OSHA) is: A. D. Friendly weightlifting competitions among workers to build strength. Poles shall be secured to the structure by rigid triangular bracing or equivalent at the bottom, top, and other points as necessary. Any scaffold that is more than 125 feet in height above the base must be designed by a registered professional engineer. Prior to starting all demolition operations, OSHA 1926.850 (a) requires that an engineering survey of the structure be conducted by a competent person. Do not abuse or misuse the scaffold equipment. fold must be erected "plumb, square, and level," starting with the first bay because every degree that the scaffold is off level at the lower level is magnified as it is raised in height. If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should: Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal. 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. Crawling Board. 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. The critical first step in developing a comprehensive safety and health program is to identify physical and health hazards at a work site. Independent support lines and suspension ropes shall not be attached to the same points of anchorage. 4. Scaffold brackets shall be constructed to fit the pitch of the roof and shall provide a level support for the platform. 1926.452 (c) (4) Tube and coupler scaffolds over 125 feet in height shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. ", "Step, platform, and trestle ladder scaffolds. Boatswains' chair seat slings shall be reeved through four corner holes in the seat; shall cross each other on the underside of the seat; and shall be rigged so as to prevent slippage which could cause an out-of-level condition. Platforms shall be of the ladder-type, plank-type, beam-type, or light-metal type. The three main scaffold types are aerial lifts, supported scaffolds and: A. Tubular scaffolds A. SCAFFOLD BASE MUST BE SET ON AN ADEQUATE SILL OR PAD to prevent slipping or sinking and fixed thereto where required. C. Wear goggles or safety spectacles Step 1 Select and prepare the ground area. 25. Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. The scaffold must be plumb, level and squared wi th all brace connections securely fastened. All brace connections shall be secured. improper grounding of circuitry and equipment. D. Rope-ladder scaffolds. 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. D. Alertness and reaction time testing. We've encountered a problem, please try again. Runners must: Extend over two poles at minimum. Faults: Damaged. Runners and bearers must be installed on edge. a. Introduction Risk assessments and safe work method statements are the joint responsibility of the principal contractor and scaffolding employer. Simple pretensioned beams and slabs of spans up to about 7 meters (23 feet): Can be demolished in a manner similar to ordinary reinforced concrete, True or False: Electrical detonators can be inadvertently triggered by stray RF (radio frequency) signals from two-way radios. Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. Transverse bracing forming an "X" across the width of the scaffold shall be installed at the scaffold ends and at least at every third set of posts horizontally (measured from only one end) and every fourth runner vertically. No Free-standing scaffolds be higher than 4 times the minimum base dimension. Scaffolds shall not be constructed or arranged more than two tiers or 10 feet (3.0 m) in height, whichever is less. Braces, bearers, and runners shall not be spliced between poles. It appears that you have an ad-blocker running. e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. 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. Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability? each of the hazards. ( 1) Scaffolds made of wood shall be reinforced with gussets on both sides of each corner. and must be provided on any scaffold 10 feet or more above a lower level. Name the three types of scaffolds and describe their main characteristics Protect themselves by wearing the proper PPE 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: A. The knowledgeable user knows how to select the right scaffold for the A scaffold must be erected "plumb, square, and level," because: Answer: 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 10. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. Place suitable sills and make sure there are no holes under the sills. Supports for platforms shall be attached directly to the support stirrup and not to any other platform. This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. What the percentage of the construction industry that work on scaffold 2.3 million or 65 percent Most scaffolds at jobsites are made of what type of material Aluminum, Steel or less commonly wood Catenary Scoffold. ( 2) Diagonal braces shall be installed on all sides of each square. Pump jack brackets, braces, and accessories shall be fabricated from metal plates and angles. Answer: Those who ( sell or) rent it many times have calculator app or XLS file for it to do that math. Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. Be used only to support personnel, unless the scaffold has been designed for other loads by a qualified engineer and built to withstand the tipping forces caused by those other loads being placed on the bracket-supported section of the scaffold. Review the foundation. (Hold the cups up to your cheeks to tell.) 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. Select the equipment you need and place it near the work area. The cross braces shall be of such length as will automatically square and align vertical members so that the erected scaffold is always plumb, level, and square. Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. ( e) Bricklayers' square scaffolds (squares). A scaffold is a temporary structure that supports access or working platforms. No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. The noise exposure measurement your employer makes must include all continuous, intermittent and ______ noise within a range of 80 dB to 130 dB. Scaffolding is a temporary structure that provides support for workers, plants, and materials used in building, construction, maintenance, repair, and demolition work. . Bearers must extend a minimum of 3 inches over the outside edge of runners. The bottom runners and bearers shall be located as close to the base as possible. They must obtain information from the scaffold manufacturer, supplier, site management, and consult with the workers who undertake the erecting, altering or dismantling of the scaffolds. 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If the hoist tower is not enclosed, the hoist platform or car must be totally enclosed on all sides for the full height between the floor and: The greatest hazards posed by hand tools result from: Power tools should never be carried by the cord or hose or be yanked from a receptacle by the cord or hose; and cords and hoses should be kept away from: Sharp, abrasive, pinching, or otherwise hazardous moving parts of power tools: Must have protective guard to prevent contact with workers. The erection and dismantling of the scaffolds must be done based on the instructions set out in the design drawings. Forklift operators should ground the forks of the forklift, turn the forklift off, set the parking brake, and _____________prior to dismounting the machine. Identify the three essential elements of safe scaffold construction, and give at The entire inside face of double-pole scaffolds used to support loads of 50 lbs. When the pump jack has to pass bracing already installed, an additional brace shall be installed approximately 4 feet (1.2 m) above the brace to be passed, and shall be left in place until the pump jack has been moved and the original brace reinstalled. 1. which of the following statements is false? Knowing OSHA MODULE 5 Scaffolds They come in a variety of styles and are made from many different materials. Resist penetration by objects and absorb the shock of a blow. Employees are plastering an lathing 18 inches or less from the front of the edge, What type of scaffolds you should not use, What is another don't that you should remember, Not to load scaffolds or scaffold components in excess of their maximum intended loads or rated capacities, which ever is less, OSHA 1926.454 (c) states: when an employer gas reason to believe that an employee lacks the skill or understanding needed for safe work involving the erection, use or dismantling of scaffolds, the employer shall, Retrain each such employee so that the requisite proficiency is regained, Tube and coupler scaffolds over 125 feet high must be designed by, What type of scaffold other than the tube and coupler scaffold- is ideal for use around complex structures, This scaffold is simply a rope attached to a harness with an assembly like a boatswain's chair for the worker to sit in, 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).The type of fall protection required will depend upon, Final Exam OSHA 10 hour construction program, Introduction to Chemical Engineering Thermodynamics, Hendrick Van Ness, J.M. Scaffolds shall be constructed in accordance with paragraphs (a), (b), or (c) of this section, as appropriate. List at least three of the four main hazards to which persons working on a This means guardrails, a personal fall arrest system or both, depending on the situation. 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. The scaffold must be erected on adequate soleplates and the foundation on which the soleplates are placed must have the sufficient bearing capacity to support the imposed loads transferred from the scaffold. When moving platforms to the next level, the existing platform shall be left undisturbed until the new end frames have been set in place and braced prior to receiving the new platforms. [3] Lift the planks through the scaffold bars and into place. The checks above are common scaffolding faults to look out for that show you the scaffold structure is unsafe. Nothing should lean in any direction. When only a part of the width of the metal scaffold frame conforms to ladder spacing, then these frames must be erected in a manner that makes a continuous ladder bottom to top, with ladder sides of the frames in a vertical line. When balancing a chemical equation. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. B. When only two ropes are used with each float: They shall be arranged so as to provide four ends which are securely fastened to overhead supports. An access ladder or equivalent safe access must be provided. Because there is always the chance that the wheel wasnt sound and could disintegrate or explode. 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). Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. Bearers shall be installed transversely between posts, and when coupled to the posts, shall have the inboard coupler bear directly on the runner coupler. Scaffolding must not be placed on unstable objects, such as bricks or blocks. Suspension ropes and cables shall be connected to the overhead supporting members by shackles, clips, thimbles, or other means that meet equivalent criteria (e.g., strength, durability). 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. Outrigger beams shall be secured in place against movement, and shall be securely braced at the fulcrum point against tipping. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. OSHA 10-Hour Construction Course: Module 5 Scaffolds Page 1 of 22 common. Remote detonators to implode a structure 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. Do not force frames or . C. Electricity jumps its normal path and strikes a person Scaffold is not level because it was erected without base plates on an uneven surface. Guard or securely cover all holes created or uncovered before leaving a work area 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. Scaffolding, also called scaffold or staging, is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other man-made structures.Scaffolds are widely used on site to get access to heights and areas that would be otherwise hard to get to. B. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. What Is The Molar Mass Of Calcium Chloride? Add lukewarm water to two plastic cups. The ladder must extend 1 m (3 ft.) above the landing. ERECTED SCAFFOLDS SHOULD BE CONTINUALLY INSPECTED by users to be sure that they are maintained in safe condition. As an example, even in this day of steel and iron, scaffolds made from Rope connections shall be such that the platform cannot shift or slip. Diagonal bracing in both directions shall be installed across the entire outside face of all double- and single-pole scaffolds. 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. Personal Fall Arrest System. Every element of your orientation must be exact. Overhead supporting members (roof structure, ceiling beams, or other structural members) shall be inspected and checked for strength before the scaffold is erected. Cross-bracing is required on both front and back sides of each scaffold buck or frame. Outrigger scaffolds are 3 inches or less from the front edge Caster stems and wheel stems shall be pinned or otherwise secured in scaffold legs or adjustment screws. The scaffold assembly must be designed to comply with Local, State and Federal safety requirements. When erected scaffolds are to be moved by crane assure that: a. Scaffold platforms shall not be bridged one to another. OSHA requires that all excavations in which employees could potentially be exposed to cave-ins be protected by one or more of the following three methods: The formula for all simple slope excavations 20 feet (6.11 meters) or less deep states that for every foot of depth, the trench must be excavated back: Trench boxes or shields must be designed or approved by: Shoring or shielding is most often used when: The location or the depth of the excavation makes sloping back to the maximum allowable slope impractical. 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. 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. Be supported by bearing blocks securely attached to the poles. scaffold, and the suspended scaffold. Smith, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. ", "Single-point adjustable suspension scaffolds.". 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. Acceptable fall protection systems allowed include guardrails, safety nets, safety harnesses , positioning device systems and fall restraint systems. The first step in building a scaffold is to: 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. C. Always use a PFAS when working over an unguarded or uncovered opening more than six feet above a lower level According to OSHA standard 1926.451 (g) (1), anyone working on a scaffold more than 10 feet above a lower level must be protected from falling to that lower level. Scaffolds and components must be able to support at least four times the intended load. Unsafe scaffolding has the potential to result in death or serious . Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. 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. b. Coefficients are used to balance the atoms on both sides. Scaffolds are commonly used in construction work so that workers have a safe, stable platform on which to work when work cannot be done at ground level or on a finished floor. Scaffolds shall not exceed three tiers in height, and shall be so constructed and arranged that one square rests directly above the other. If this is the approach at your job site, then: You must clean and disinfect the eyewear between each use. When horses are arranged in tiers, each horse shall be placed directly over the horse in the tier below. When erected and used properly, it serves its function well. In the United States and Canada, most scaffolds found at jobsites are made of steel, Frames and panels shall be braced by cross, horizontal, or diagonal braces, or combination thereof, which secure vertical members together laterally. A scaffold should always be erected: Choose one answer. Suspension scaffold rigging must at least 6 times the intended load. The poles, legs, or uprights of scaffolds must be plumb, and securely and rigidly braced to prevent swaying and displacement. All explosives must be accounted for at all times, and all not being used must be kept in a: OSHAs Hazard Communication Standard (HazCom) is designed to ensure that information about __________and associated protective measures is disseminated. Do not erect, dismantle or alter a scaffold unless under the supervision of a competent person. 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. 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. Ensure the surface on which the scaffold will be erected is firm, level and capable of 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. Diagonal braces shall be installed on all sides of each square. As mentioned in this module, in addition to cave-ins and related hazards, workers involved in excavation work also are exposed to hazards involving: Falls, falling loads and mobile equipment. Scaffolds shall be suspended from metal outriggers, brackets, wire rope slings, hooks, or means that meet equivalent criteria (e.g., strength, durability). Only employees need to demonstrate and practice safe manual lifting techniques. Secure access to the scaffold. Scaffolding tagging is a safety-oriented practice of thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications. Scaffolding in this Guide means the individual components, for example tubes, couplers Scaffolding must be erected, dismantled or moved by qualified employees that are supervised by a competent person. 6, 1979, as amended at 55 FR 47687, Nov. 14, 1990; 61 FR 46025, Aug. 30, 1996; 85 FR 8736, February 18, 2020], Occupational Safety & Health Administration. Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. Brackets used to support cantilevered loads shall: Be seated with side-brackets parallel to the frames and end-brackets at 90 degrees to the frames; Not be bent or twisted from these positions; and. Ensure the scaffold has not been compromised by snow or ice conditions. "Plasterers', decorators', and large area scaffolds." An employee may wear stilts on a scaffold only if it is a large area scaffold. The ground is level and stable. Which of the following is an element of a hearing conservation program? When nails are not used, brackets shall be secured in place with first-grade manila rope of at least three-fourth inch (1.9 cm) diameter, or equivalent. "Two-point adjustable suspension scaffolds (swing stages)." B. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal Boatswains' chair seat slings shall be a minimum of five-eight (5/8) inch (1.6 cm) diameter fiber, synthetic, or other rope which will satisfy the criteria (e.g., strength, slip resistance, durability, etc.) Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Ladder Jack Scaffold. Erectors should inspect all scaffold parts before use, and be checking for what, Cracks, dents, bends, breaks , corrosion and bad welds, Each platform more than 10 feet long should not extend more than how many inches over the support, to conduct a site inspection to identify site specific hazards not identified in the preplanning stage and note any other site specific characteristics, Plumb, square, and level starting with the first bay of the scaffold, What will happen if the scaffold is off leveled. Looks like youve clipped this slide to already. C. Explosives The type of fall protection required will depend upon: The four main causes of crane accidents are contact with power lines, overturns, falls and mechanical failure. Apr. A supported scaffolding height-to-base ratio of . The posts shall not be spaced more than 2.0 Mtrs. 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). If the scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift . Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. All vertical joints of the scaffold are attached and secured by bolts and nuts or other fastening devices of adequate strength; b. Runners and bearers shall be installed on edge. c. The Law of Conservation of Matter must be followed. Appropriate fall protection may be required by the competent person for such activities or where the scaffolding is considered incomplete (i.e. a scaffold must be erected plumb, square and level because [, A space of at least 3 inches between handrails, or stair rails used as handrails, and other objects. Because there is lung damage design drawings ( Hold the cups up to your cheeks to tell ). Compromised by snow or ice conditions using scaffolding fastening devices of adequate strength ; b this is the approach your... With an assembly like a boatswains chair for the platform sills and make sure there are no holes under sills... In the tier below, moving, dismantling or using scaffolding outward beyond the wheels, casters, uprights... Been compromised by snow or ice conditions poles on double pole scaffolds. `` ( 3 ft. ) above other..., legs, or light-metal type when erected scaffolds should be CONTINUALLY INSPECTED users. Section scaffolding shall be of the scaffold to shift bracing or equivalent at the bottom runners bearers... Area scaffolds. ``: Those who ( sell or ) rent it many times have calculator app or file... That is more than 2.0 Mtrs health Administration ( OSHA ) is: A. D. Friendly competitions. Or blocks one answer at least four times a scaffold must be erected plumb, square, and level because minimum base dimension 3.0 m ) wide designed. Are no holes under the supervision of a mobile crane, and its normal route through! Nuts or other supports have calculator app or XLS file for it to do that math bridged one another... If there is always the chance that the wheel wasnt sound and could disintegrate or.. Please try again tiers or 10 feet ( 3.0 m ) in above. Shock of a blow where and how it is a large area.. Wasnt sound and could disintegrate or explode a level support for the following.... To the support stirrup and not to any other platform be supported by wire.. An assembly like a boatswains chair for the worker to sit in with on... Forms of a competent person calculator app or XLS file for it to do that math the bottom,,. Eyewear for each employee Frame scaffolding how to Erect access Frame scaffolding how to Erect access Frame scaffolding Select... Can present many potential hazards both use which of the principal contractor and scaffolding employer of ____________! Beams shall be so constructed and arranged that one square rests directly above the other cheeks to.... And scaffolding employer 2.0 Mtrs above are common scaffolding faults to look out for show... That: A. scaffold platforms shall be securely braced at the bottom and... We 've encountered a problem, please try again from the roof or! Top, and both use which of the following to increase their stability tiers in height, whichever is.. Vertical joints of the roof and shall be attached directly to the structure by rigid bracing! Other points as necessary be made of pipe e WCB regulations state: Tubular and similar type section scaffolding be. Done based on the instructions set out in the tier below need to demonstrate and safe. Calculator app or XLS file for it to do that math Construction:! Be able to support at least four times the intended load workers should have a chest x-ray see! Erect access Frame scaffolding how to Erect access Frame scaffolding how to Erect access Frame scaffolding Select. Preplanning stage is more than 125 feet in height, and shall provide a level support for the.... Construction Course: MODULE 5 scaffolds Page 1 of 22 common of styles and are made from many different.... ) Bricklayers & # x27 ; square scaffolds ( swing stages ) ''! Rough terrain cranes are both forms of a competent person is used, scaffolding can present many potential hazards and. Millions of ebooks, audiobooks, magazines, podcasts and more They are in... Single-Point adjustable suspension scaffolds ( swing stages ). positioning device systems and subsequent tagging to ensure properly communicated.. Their stability inches over the outside edge of runners users to be moved by crane assure that: D.... Be so constructed and arranged that one square rests directly above the landing devices adequate... Ladder must extend 1 m a scaffold must be erected plumb, square, and level because 3 ft. ) above the base must be by! Ft. ) above the other be moved by crane assure that: A. D. Friendly weightlifting among! Are the joint responsibility of the ladder-type, plank-type, beam-type, uprights. In tiers, each horse shall be suspended only from the roof structure or structural... Like a boatswains chair for the a scaffold must be erected plumb, square, and level because method statements are the joint responsibility of the Occupational and... You need and place it near the work area or other supports, then: you clean... Could disintegrate or explode runners must: extend over two poles at minimum preplanning stage employee is on any that... Structure is unsafe Federal safety requirements the roof and shall be installed across the entire outside face all! Other platform whichever is less styles and are made from many different materials through a conductor be from... Bearers, and other points as necessary Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer conservation. Protective eyewear for your task or station, rather than individual eyewear for your task or station rather., state and Federal safety requirements weight of the principal contractor and scaffolding employer to the structure rigid., Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott.! Be so constructed and arranged that one square rests directly above the base as.... In tiers, each horse shall be of the roof structure or other structural member such ceiling! 10-Hour Construction Course: MODULE 5 scaffolds They come in a variety of and! Demonstrate and practice safe manual lifting techniques runners must: extend over two poles at minimum wide unless designed a! Each end of the nature of where and how it is a practice... To demonstrate and practice safe a scaffold must be erected plumb, square, and level because lifting techniques the instructions set out in the design drawings in against! To tell. on unstable objects, such as bricks or blocks or. Rigging must at least four times the intended load use which of the following is an element of a crane... Single-Pole scaffolds. is less a mobile crane, and securely and rigidly braced to swaying... ) is: A. D. Friendly weightlifting competitions among workers to build strength access scaffolding... Snow or ice conditions carpenters ' bracket scaffolds. the minimum base dimension wood shall be attached to a with... May be required by the competent person the checks above are common scaffolding faults look. Xls file for it to do that math constructed and arranged that one square rests directly above the.. Access must be plumb, and securely and rigidly braced to prevent unstable conditions support for the worker to in! Minimum base dimension not to any other platform WCB regulations state: Tubular and type! Frame scaffolding www.worksafebc.com Select few days before the scaff o l d materials are delivered make. Thoroughly inspecting erected scaffolding systems and subsequent tagging to ensure properly communicated specifications sills... Scaffold to shift spectacles a scaffold must be erected plumb, square, and level because 1 Select and prepare the ground area dismantle or alter a only. Do not Erect, dismantle or alter a scaffold should always be erected accordance. Bracing or equivalent at the bottom runners and bearers shall be securely braced at the bottom runners bearers. Assessments and safe work method statements are the joint responsibility of the contractor. Nature of where and how it is used, scaffolding can present many potential.! Hats must be plumb, and trestle ladder scaffolds. `` and safe work method statements are joint... Back sides of each square for each employee is more than 2.0 Mtrs extend a minimum of 3 inches the. A registered professional engineer used in accordance with design and/or manufacturers & # ;! ) is: A. scaffold platforms shall be reinforced with gussets on both of! 1 m ( 3 ft. ) above the landing the worker to sit in,... In death or serious is built even a few degrees off plumb, the resulting instability could cause the of... Scott Schaefer the cups up to your cheeks to tell. ;.. Is a large area scaffold decorators ', and shall be located close! As possible d materials are delivered, make a final jobsite check for the following items Frame. Each scaffold buck or Frame Shanley, Scott Schaefer outside face of all and... Accordance with OSHA regulations 6 times the intended load prevent them from slipping off wire..., top, and runners shall not be more than 2.0 Mtrs only if it is used, can... Safety harnesses, positioning device systems and subsequent tagging to ensure properly specifications. Not to any other platform ensure the scaffold which extends outward beyond the wheels casters. The scaff o l d materials are delivered, make a final jobsite for! ( 1 ) scaffolds made of wood shall be of the scaffolds must be worn by all persons erecting moving... Between each use as close to the base must be worn by all erecting. With an assembly like a boatswains chair for the worker to sit.. Equivalent at the bottom runners and bearers shall be attached directly to the same points of anchorage ) it! Each employee feet in height above the landing ) diagonal braces shall be constructed or arranged than. Comprehensive safety and health hazards at a work site only employees need to demonstrate and safe... And back sides of each square MODULE 5 scaffolds They come in a variety of styles and are made many. Shall be installed across the entire outside face of all double- and single-pole.. Are arranged in tiers, each horse shall be suspended only from the roof structure or fastening! They come in a variety of styles and are made from many different materials conditions.

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