We thoroughly check each answer to a question to provide you with the most correct answers. Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. Horizontally at each end and at 30 feet intervals measured from one end only. A ground-fault circuit interrupter (GFCI) protects workers from shock by: Matching the amount of current going into an electrical device against the amount returning from the device and shutting down power if a ground fault is detected. Wood splice plates shall be provided on at least two adjacent sides, and shall extend at least 2 feet (0.6 m) on either side of the splice, overlap the abutted ends equally, and have at least the same cross-sectional areas as the pole. Note: Except where . CapacityScaffolds and scaffold components must support at least 4 times the maximum intended load. Fasten all couplers and/or connections securely before assembling the next level . Step 1 Select and prepare the ground area. Using cranes to hoist material can have serious consequences if the process is not performed properly. Rope connections shall be such that the platform cannot shift or slip. The scaffold must rest on a firm foundation, be plumb and braced to prevent swaying. On straight run scaffolds, longitudinal bracing across the inner and outer rows of posts shall be installed diagonally in both directions, and shall extend from the base of the end posts upward to the top of the scaffold at approximately a 45 degree angle. Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder). 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. 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. Platforms shall be of the ladder-type, plank-type, beam-type, or light-metal type. Review the foundation. Electricity travels in closed circuits, and its normal route is through a conductor. Where leveling of the scaffold is necessary, screw jacks or equivalent means shall be used. It appears that you have an ad-blocker running. Non-mandatory Appendix A to this subpart contains examples of criteria that will enable an employer to comply with design and loading requirements for pole scaffolds under 60 feet in height. Runners must: Extend over two poles at minimum. Scaffolds must be erected in accordance with design and/or manufacturers' recommendations. A narrow excavation made below the surface of the ground in which the depth is greater than the width with the width not to exceed 15 feet Supported scaffold poles, legs . 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. A good time to perform these inspections is at the start of the workday to ensure the area is clear for that day's shift. Scaffolds are plumb, square, level and situated on base . 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. 6. Platform units shall be securely attached to the needle beams by bolts or equivalent means. has financial rewards, with an estimated annual savings of $90 million for American The site owner may have set restrictions that prevent you from accessing the site. How to Erect Access Frame Scaffolding How to Erect Access Frame Scaffolding www.worksafebc.com Select . 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). Erecting Scaffolding Safely. The scaffold must be plumb, level and squared wi th all brace connections securely fastened. Safety footwear has to meet minimum compression and impact performance standards, set by: Gloves that are chemically resistant are usually made from: True or False: Full-body protection is sometimes made from materials such as duck, paper-like fiber, or rubberized fabrics, depending upon the hazard. The knowledgeable user knows how to select the right scaffold for the Boatswains' chair tackle shall consist of correct size ball bearings or bushed blocks containing safety hooks and properly "eye-spliced" minimum five-eighth (5/8) inch (1.6 cm) diameter first-grade manila rope, or other rope which will satisfy the criteria (e.g., strength and durability) of manila rope. Ladders used to support step, platform, and trestle ladder scaffolds shall be placed, fastened, or equipped with devices to prevent slipping. D. All of the above. The sheaves of all blocks shall fit the size of the rope used. U-bolt wire rope clips shall not be used on any wire rope used to secure brackets or to serve as an anchor for personal fall arrest systems. 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. 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. Any man-made cavity, depression, trench or cut in the earths surface formed by earth removal Each wire rope used for securing brackets in place or as an anchorage for personal fall arrest systems shall be protected from damage due to contact with edges, corners, protrusions, or other discontinuities of the supporting structure or scaffold components. Landings for the stair access are assembled within the 1.27m square bays at each end of the stair stringer bays using cuplock 1.27m . Independent support lines and suspension ropes shall not be attached to the same points of anchorage. Position the first level of bracing as close to the base as possible. A scaffold is a temporary structure specifically erected to support access or working platforms. Supports for platforms shall be attached directly to the support stirrup and not to any other platform. Tensioning of each wire rope used for securing brackets in place or as an anchorage for personal fall arrest systems shall be by means of a turnbuckle at least 1 inch (2.54 cm) in diameter, or by equivalent means. When an employee is using stilts on a large area scaffold where a guardrail system is used to provide fall protection, the guardrail system shall be increased in height by an amount equal to the height of the stilts being used by the employee. C. Both A and B All brace connections must be secured. The inboard ends of outrigger beams shall be securely anchored either by means of braced struts bearing against sills in contact with the overhead beams or ceiling, or by means of tension members secured to the floor joists underfoot, or by both. By the user only b. Plumb c. By a contractor d. Plumb and level e. Level c Safe rigging practice dictates that weight estimates of objects to be lifted, when the objects are relatively lightweight, should be accurate within plus or minus _____. Resist penetration by objects and absorb the shock of a blow. Ladder Jack Scaffold. It provides a safe and stable platform for workers. Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. A metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. D. A hole of any shape with a depth that exceeds 15 feet. All ladders used to support ladder jack scaffolds shall meet the requirements of subpart X of this part -- Stairways and Ladders, except that job-made ladders shall not be used to support ladder jack scaffolds. Scaffold support beams shall be installed on edge. 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. You might get some help from www.HelpWriting.net Success and best regards! When horses are arranged in tiers, each tier shall be crossbraced. [3] Lift the planks through the scaffold bars and into place. Manual force used to move the scaffold shall be applied as close to the base as practicable, but not more than 5 feet (1.5 m) above the supporting surface. All jacks lever and ratchet jacks, screw jacks, and hydraulic jacks must have a device that stops them from: A narrow excavation made below the surface of the ground in which the depth is greater than the width with the width not to exceed 15 feet. A. No Free-standing scaffolds be higher than 4 times the minimum base dimension. Be placed on a firm foundation and be uniformly level within 1 percent of level grade Employees shall not be allowed to ride on scaffolds unless the following conditions exist: The surface on which the scaffold is being moved is within 3 degrees of level, and free of pits, holes, and obstructions; Outrigger frames, when used, are installed on both sides of the scaffold; When power systems are used, the propelling force is applied directly to the wheels, and does not produce a speed in excess of 1 foot per second (.3 mps); and. C. Electricity jumps its normal path and strikes a person 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). Any alteration of the original equipment shall be approved by the manufacturer. Personal Fall Arrest System. The mission of the Occupational Safety and Health Administration (OSHA) is: A. Scaffolding is used for renovations, construction, maintenance, installations, and much more. Vehicle mounted devices such as cherry pickers or boot trucks used to get a worker to an elevated position. Which of the following is an element of a hearing conservation program? This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. ", "Step, platform, and trestle ladder scaffolds. Yet, because of the nature of where and how it is used, scaffolding can present many potential hazards. Activate your 30 day free trialto continue reading. D. Stop using the tool, A. To secure fair compensation for workers who have been injured in accidents Employers must: Ensure that the safety monitor is a competent person knowledgeable about fall protection. OSHA promulgated the Final Rule for Powered Industrial Truck Operator Training [29 CFR 1910.178(1)], which: Requires operator training and licensing as well as periodic evaluations of operator performance. 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 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. Any scaffold that is more than 125 feet in height above the base must be designed by a registered professional engineer. Plan the scaffolding setup a few weeks before the start of the project to make sure the scaffold fits the site. Symptoms of silicosis ____________ , so workers should have a chest x-ray to see if there is lung damage. Nothing should lean in any direction. Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings? Activate your 30 day free trialto unlock unlimited reading. Approximately 75 percent of struck-by fatalities involve: It is preferable not to drive a vehicle in reverse if you have an obstructed rear view, but if you do, make sure: Workers are most at risk from falling objects when standing or working: To prevent injury from flying debris, use safety glasses, goggles, face shields, etc., where machines or tools may cause flying particles; and always inspect tools, such as saws and lathes, to ensure that: The protective guards are in good condition and firmly attached. and must be provided on any scaffold 10 feet or more above a lower level. If bearing on rungs only, the bearing area shall include a length of at least 10 inches (25.4 cm) on each rung. When a wire rope is placed around the structure in order to provide a safe anchorage for personal fall arrest systems used by employees erecting or dismantling scaffolds, the wire rope shall meet the requirements of subpart M of this part, but shall be at least 5/16 inch (0.8 cm) in diameter. 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