a scaffold must be erected plumb, square, and level because
Ascaffold must be erected “plumb, square, and level,” starting with the first bay of thescaffold, because every degree that the scaffold is off level will be magnified as thescaffold is raised in height. Top If the overhand bricklayers must reach more than 10" below the working scaffold surface, the bricklayer must be protected by a guardrail, safety net, or other type of fall protection system. Be sure scaffold stays plumb and level as erection progresses. Supported Scaffold Inspection Checklist (The form must be completed by a Competent Person) Job Name/Location: Name of Competent Person: Safety Requirements Yes No N/A 1 Was the scaffold erected under the direction Tubes, couplings and braces must all fit together easily for fastening. Is erected plumb and level. (7) Ribbons shall be erected along the length of the scaffold, located on both the inside and the outside posts at … PLUMB/LEVEL/SQUARE Supported scaffold poles, legs, posts, frames, and uprights shall be plumb (i.e. Cross-bracing is required on both front and back sides of each scaffold buck or frame. b. 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. This kind of scaffold should be erected so that its height-to-width ratio is no greater than 3 to 1. Fall protection can be used in lieu of guardrails on some scaffolds. Must be plumb, level, and square Base-to-height ratio cannot exceed 4 times the narrowest dimension. Tower must be kept level and plumb at all times. The scaffold must be plumb, level and squared with all brace connections securely fastened 12 6. 4. 3.3.4 PLATFORM - A flat, level… the scaffold plumb and level. A scaffold out of square is inherently unstable and jeopardizes those working on it as well as those working or walking nearby. This limits the height of platforms with standard outrigger stabilizers and single span towers to approximately 9 m (30 ft). 4. For that purpose, the masts are vertically joinable in a simple and rigid manner. square. Cross-bracing is required on both front and back sides of each scaffold buck or frame. Guardrails are required at 10 feet. Level the ground and/or clear the area on which the scaffold is to be erected of any debris. The scaffold must be erected with cross, horizontal, or diagonal braces, or combination 11 1926.452(w), titled "Mobile Scaffolds." Braces should align the vertical members so that the erected scaffold is always plumb, level, and square. a. All braces must be checked for proper engagement onto locks. Has lockable wheels if it is a mobile rolling scaffold. A competent person must determine the … (6) Posts shall be accurately spaced, erected on suitable bases, and maintained plumb. For scaffold work, employees must have fall protection when working at a height of 10 feet or more above a lower level. Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. n A scaffold must be erected, altered, and dismantled by qualified workers or under the direct supervision of a qualified person. Some states, e.g., CA, are more restrictive. Plumb/Level/Square Supported scaffold poles, legs, posts, frames, and uprights shall be plumb (i.e perfectly vertical) and braced to prevent swaying and displacement. automatically square and align vertical members so that the erected scaffold is always plumb, square and rigid. Plumb and level the scaffold as it is being erected. perfectly vertical) and braced to prevent swaying and displacement. Position horizontal members on both rings of each ring set, and firmly Good Foundations Plumb & Level The Scaffold It all starts in the first bay. Bracings must be properly attached to the pins in the frame and not simply wired to the scaffold frame. • Screw jacks must not increase the height of the scaffold by more than 12 inches. 32. If using wooden • All scaffolds must be erected plumb and level, and be designed for the intended use. Rolling scaffolds must be built to prevent racking. Spacing of Frames shall be consistent with the loads imposed. keep the scaffold square. Has a … a scaffold (other than a suspended scaffold, hanging scaffold or a scaffold erected on cantilever or jib supports) which, when completed and excluding the handrails and their supports at the uppermost lift of the scaffold, is less than Plumb and level scaffold until connections can be made with ease. All brace connections must be secured to prevent dislodging. magnetic spirit level and a leather belt and “frogs” to carry these tools. If the scaffold is built even a few Fasten vertical posts together to prevent uplift. The scaffold should be plumb, level and square. 10, a square plug 66 is welded Acceptable fall protection systems allowed include guardrails, safety nets, safety harnesses , positioning device systems and fall restraint systems. Cross bracing is acceptable for mid rail if cross point is between 20” and 30” above the work platform. Scaffold must be erected, moved, or disassembled only by and under the supervision of qualified persons. • Mud sills must be adequate LEGISLATION GOVERNING USE OF SCAFFOLDS HEALTH AND SAFETY AT WORK ACT 1974 • Protect the health, safety and welfare of employees and to safeguard the public who may be exposed to risks from work activities. The towers 5 of the scaffold system 1 of the present invention may be erected to very high heights. Determine the point at which to start building the scaffold Starting at the screw jack on the highest point of ground, adjust the screw jack nuts so they are set 2 inches (51 mm) above the top of the sill. Contacting and coordinating with the Competent Person regarding any issues associated with the erection of a scaffold. Prior to occupation scaffold erectors must notify the competent person that the scaffold has been erected and is ready to be inspected. STI CP Manual Section 04 Page 5 Set the main posts into the starter collars. 3.3.3 MEDIUM DUTY SCAFFOLD - A scaffold designed and constructed to carry a working load not to exceed 50 pounds per square foot. All brace connections shall be made secure. U-665B2 Install guys, ties and braces according to the manufacturer’s recommendations. ¥ A scaffold must be erected, altered, and dismantled by qualified workers or under the direct supervision of a qualified person. Horizontal diagonal braces As shown in FIG. Employers must provide fall protection for each employee on a scaffold more than 10 feet (3.1 meters) above a lower level. Scaffold Guardrail Systems - Standard rails are required on all the scaffold. Fasten the levelling jack to the sills with either nails or screws. Fasten all couplers and/or connections securely before assembling the next level. 5. When higher than the 4:1 ratio, the scaffold must be restrained from tipping. Is secured to prevent lateral movement. If it is set plumb and square, the rest will follow. for Construction Purposes, vertical load‐carrying members must be erected and maintained within the following limits: (a) not more than 12 millimetres (0.47 inches ) out of plumb in 3 metres (9.8 feet); (b) 5. Be sure scaffold stays plumb and level as erection progresses. Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. All brace connections shall be secured. Check the level again and plumb if necessary. 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