a scaffold must be erected plumb, square, and level because

This limits the height of platforms with standard outrigger stabilizers and single span towers to approximately 9 m (30 ft). Fall protection can be used in lieu of guardrails on some scaffolds. • Use horizontal diagonal near the … Some states, e.g., CA, are more restrictive. All braces must be checked for proper engagement onto locks. Cross-bracing is required on both front and back sides of each scaffold buck or frame. Prior to occupation scaffold erectors must notify the competent person that the scaffold has been erected and is ready to be inspected. Fasten vertical posts together to prevent uplift. Plumb and level scaffold until connections can be made with ease. Good Foundations Plumb & Level The Scaffold It all starts in the first bay. Cross bracing is acceptable for mid rail if cross point is between 20” and 30” above the work platform. PLUMB/LEVEL/SQUARE Supported scaffold poles, legs, posts, frames, and uprights shall be plumb (i.e. The inspections also must verify that is the scaffold is level and plumb, the base plates are in firm contact with sills, bracing is in place and connected, platforms are fully planked, guardrails in place, safe access is provided, it is properly tied or guyed and that there are no overhead obstruc- Determine the point at which to start building the scaffold (6) Posts shall be accurately spaced, erected on suitable bases, and maintained plumb. Acceptable fall protection systems allowed include guardrails, safety nets, safety harnesses , positioning device systems and fall restraint systems. This kind of scaffold should be erected so that its height-to-width ratio is no greater than 3 to 1. U-665B2 6. Cross-bracing is required on both front and back sides of each scaffold buck or frame. 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 The scaffold should be plumb, level and square. A competent person must determine the … Guardrails are required at 10 feet. STI CP Manual Section 04 Page 5 Set the main posts into the starter collars. Spacing of Frames shall be consistent with the loads imposed. Install guys, ties and braces according to the manufacturer’s recommendations. Be sure scaffold stays plumb and level as erection progresses. 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. For scaffold work, employees must have fall protection when working at a height of 10 feet or more above a lower level. 32. Position horizontal members on both rings of each ring set, and firmly Position horizontal members on both rings Has vertical supports resting on a firm foundation or sills. 3.3.4 PLATFORM - A flat, level… Because the frames are stacked, the cross braces have to keep the scaffold plumb, level, and square. The scaffold must be plumb, level and squared with all brace connections securely fastened 12 ¥ A scaffold must be erected, altered, and dismantled by qualified workers or under the direct supervision of a qualified person. Employers must provide fall protection for each employee on a scaffold more than 10 feet (3.1 meters) above a lower level. Contacting and coordinating with the Competent Person regarding any issues associated with the erection of a scaffold. keep the scaffold square. Rolling scaffolds must be built to prevent racking. the scaffold plumb and level. perfectly vertical) and braced to prevent swaying and displacement. Top Install the deck, which may be an all aluminium platform or with wood deck or scaffold planks. 4. automatically square and align vertical members so that the erected scaffold is always plumb, square and rigid. 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. Tower must be kept level and plumb at all times. If using wooden • Screw jacks must not increase the height of the scaffold by more than 12 inches. When higher than the 4:1 ratio, the scaffold must be restrained from tipping. Bracings must be properly attached to the pins in the frame and not simply wired to the scaffold frame. 3.3.3 MEDIUM DUTY SCAFFOLD - A scaffold designed and constructed to carry a working load not to exceed 50 pounds per square foot. (7) Ribbons shall be erected along the length of the scaffold, located on both the inside and the outside posts at … A scaffold out of square is inherently unstable and jeopardizes those working on it as well as those working or walking nearby. 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. All brace connections shall be secured. 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) Has a … the scaffold. Is secured to prevent lateral movement. 5. Be sure scaffold stays plumb and level as erection progresses. Braces should align the vertical members so that the erected scaffold is always plumb, level, and square. Scaffold must be erected, moved, or disassembled only by and under the supervision of qualified persons. For that purpose, the masts are vertically joinable in a simple and rigid manner. Check the level again and plumb if necessary. The towers 5 of the scaffold system 1 of the present invention may be erected to very high heights. • Mud sills must be adequate Scaffold Guardrail Systems - Standard rails are required on all All brace connections shall be made secure. 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. All brace connections must be secured to prevent dislodging. All brace connections shall be secured. Training of other scaffold users if needed. 4. No components should be forced to fit, because this exerts undue pressure throughout the structure that can jeopardize its integrity. Fasten vertical posts together to prevent uplift. 5. Tubes, couplings and braces must all fit together easily for fastening. 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 Horizontal diagonal braces a. square. Is erected plumb and level. b. Fasten the levelling jack to the sills with either nails or screws. n A scaffold must be erected, altered, and dismantled by qualified workers or under the direct supervision of a qualified person. Has lockable wheels if it is a mobile rolling 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. If the scaffold is built even a few If it is set plumb and square, the rest will follow. Must be plumb, level, and square Base-to-height ratio cannot exceed 4 times the narrowest dimension. As shown in FIG. Fasten all couplers and/or connections securely before assembling the next level. 10, a square plug 66 is welded Plumb and level scaffold until connections can be made with ease. 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. • All scaffolds must be erected plumb and level, and be designed for the intended use. magnetic spirit level and a leather belt and “frogs” to carry these tools. The scaffold must be erected with cross, horizontal, or diagonal braces, or combination 11 1926.452(w), titled "Mobile Scaffolds." Level the ground and/or clear the area on which the scaffold is to be erected of any debris. Hard hats must be worn by all persons erecting, moving, dismantling or using scaffolding. 6. Plumb and level the scaffold as it is being erected. 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