True or False: There is usually some form of warning before a cave-in. A training program to teach proper lifting techniques should cover: Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk. 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 The scaffold is positioned so that swinging cannot bring the scaffold into contact with another surface. Platforms shall not be more than 36 inches (0.9 m) wide unless designed by a qualified person to prevent unstable conditions. 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. Building ties shall be installed at the bearer levels between the transverse bracing and shall conform to the requirements of 1926.451(c)(1). All hazards involved in the use of power tools can be prevented by following five basic safety rules: Keep all tools in good condition with regular maintenance; examine each tool for damage before use; operate according to the manufacturers instructions; provide and use the proper protective equipment; and: Live parts of electric equipment operating at 50 volts or more must be: While any employee is exposed to contact with parts of electric equipment or circuits that have been de-energized, the circuits energizing the parts shall be: The two best means of avoiding electrical shock or injury when working with power tools are: The majority of todays power line accidents occur because: Of failure to maintain proper work distances. Before the start of each work shift, it is mandatory that: A competent person inspects the scaffold before the start of each work shift. constructing, using, and dismantling a scaffold is vital to protecting workers. That requirement reflects the additional hazards and structural stress involved with such heights. 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. . Ensure the surface on which the scaffold will be erected is firm, level and capable of Personal Fall Arrest System, Guardrail System, or 3/4 inch (1.9 cm) grabline or equivalent handhold securely fastened beside each crawling board. What Is The Molar Mass Of Calcium Chloride? Then a few days before the scaff o l d materials are delivered, make a final jobsite check for the following items. 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. Crossbracing shall be installed between the inner and outer sets of poles on double pole scaffolds. Each pump jack bracket shall have two positive gripping mechanisms to prevent any failure or slippage. Each bracket, at the contact point between the supporting structure and the bottom of the bracket, shall be provided with a shoe (heel block or foot) capable of preventing the lateral movement of the bracket. PLUMB/LEVEL/SQUARE. employers in workdays not lost. Review the foundation. Ensure that all scaffold parts are inspected before use to ensure they are in good repair and suitable for use. Runners shall be interlocked on straight runs to form continuous lengths, and shall be coupled to each post. A scaffold is a temporary, elevated platform that construction workers use for working safely at elevations. Scaffold casters and wheels shall be locked with positive wheel and/or wheel and swivel locks, or equivalent means, to prevent movement of the scaffold while the scaffold is used in a stationary manner. This scaffold is simply a rope attached to a harness with an assembly like a boatswains chair for the worker to sit in. Platforms shall not exceed a height of 20 feet (6.1 m). 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. The posts shall not be spaced more than 2.0 Mtrs. Scaffolds shall be suspended from metal outriggers, brackets, wire rope slings, hooks, or means that meet equivalent criteria (e.g., strength, durability). ( e) Bricklayers' square scaffolds (squares). which of the following statements is false? C. Suspended scaffolds 1. Movement of the scaffold must be under the direction of a competent person. improper grounding of circuitry and equipment. The blocks for fiber or synthetic ropes shall consist of at least one double and one single block. This poses a risk of electrocution not just to the worker holding the tool, but to everyone who contacts the scaffold. In addition to this human savings, working safely on scaffolds also 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). The circuit becomes part of the conductor 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. Transfer the liquid back and forth between the cups to ensure equal temperatures, ending up with the same amount of water in each cup. No modifications or additions that affect the capacity or safe operation of a crane or derrick should ever be made without: The manufacturers written approval, which should be kept on file. Secure access to the scaffold. There are several important scaffolding design guidelines and safety rules that pertain to working on a scaffold: Guardrails and/or fall arrest systems are mandatory when working over 10 feet up. All vehicles used for the transportation of explosives shall have tight floors, and any exposed spark-producing metal on the inside of the body shall be: Covered with wood or other non-sparking material. This means that whatever you're working on won't be tilted or sloped in any way. 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. 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 metal base plate footing makes the scaffold more secure and will go a long way to ensure scaffolding meets the next two regulations. D. Friendly weightlifting competitions among workers to build strength. Scaffold platforms shall not be placed any higher than the second highest rung or step of the ladder supporting the platform. That's one of the reasons why we need to keep it inspected - for safety sake! All diagonal . Ladder Jack Scaffold. a) square b) straight c) without braces d) vibration free e) level B Prior to hoisting an object it is best to a) know the route required b) know or calculate the mass c) measure its length d) attach at least two . Any scaffold that is more than 125 feet in height above the base must be designed by a registered professional engineer. Where wooden poles are spliced, the ends shall be squared and the upper section shall rest squarely on the lower section. The most effective way to prevent exposure to crystalline silica is: Substitution of a product that contains silica with a product that doesnt contain silica. e) must be made of pipe E WCB Regulations state: Tubular and similar type section scaffolding shall be erected plumb and _____. D. Stop using the tool, A. 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. ", "Form scaffolds and carpenters' bracket scaffolds. B. 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. Scaffolding means a convenient platform for persons to work at height. Scaffold platforms shall not be bridged one to another. Scaffold 0c8be2a1 9996-490a-99c0-6ef40baed98a. Prevent An Expressway Emergency By Merging Without _____. Correct answer Special care and training incentives The scaffold must be erected with cross, horiz ontal, or diagonal braces, or combination. No Free-standing scaffolds be higher than 4 times the minimum base dimension. Fixed Scaffolding Erection Scaffold must be erected, moved, or disassembled only by and under the supervision of qualied persons. "Two-point adjustable suspension scaffolds (swing stages)." 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. B. Bamboo scaffolds b. Coefficients are used to balance the atoms on both sides. Hardware should be included to fasten the planks into place. No employee is on any part of the scaffold which extends outward beyond the wheels, casters, or other supports. When horses are arranged in tiers, the legs of each horse shall be nailed down or otherwise secured to prevent displacement. D. Alertness and reaction time testing. Platform units shall be securely attached to the needle beams by bolts or equivalent means. Scaffolds shall be suspended only from the roof structure or other structural member such as ceiling beams. . When platforms are being moved to the next level, the existing platform shall be left undisturbed until the new bearers have been set in place and braced, prior to receiving the new platforms. 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. 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. 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