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i MOBILE SCAFFOLDS Mobile scaffolds(Tubular Welded Rolling Scaffolds)rest on the ground or floor and are supported by wheels or casters. General Requirements: 1. Survey the area: The working area should be clear of all obstacles which would cause a mobile scaffold to tip over. 2. Inspect all equipment before using: Never use any equipment which has an obvious defect. E 3. Never use equipment for purposes or in ways for which it was not intended. General Rules for Assembly: 1. The uprights(frames)should be properly braced. 2. Wheels or casters should be provided with a locking device. Casters should be secured to the pin frame by a positive locking device(lock pin, bolt or equivalent fastener). 3. Adjusting screws(if used)should not be extended more than 12 inches. 4. Toggle pins, bolts or equivalent fasteners shall be installed at all connections between frames, guardrail supports and casters. 5. The working platform height of a rolling scaffold should not exceed four times the smallest base dimension unless guyed or otherwise stabilized (CAL OSHA and some Government agencies call for stricter a ratio of 3 to 1). 6. Guardrails should be installed ort all open sides and ends of platforms more than 6 feet in height. 7. Use only scaffold grade planking. flanks should cover the full width of the scaffold,except for necessary access openings. (An effective method of preventing planks from slipping off must be provided, i.e.,cleats or end support hooks). S. Do not use outriggers or other platform extensions without thorough consideration for overturning effect. 9. Remember that the scaffold will be less stable with people on it, since its center of gravity is higher. 10. Toeboards should be installed on all open sides and ends of platforms more than 10 feet in height(CAL OSHA is 7 feet 6 inches). Precaution During Use: I. Always climb the scaffold with both hands. 2. Never climb on braces. 3. Always set tine brake locking device on casters or chock the wheels when erecting,dismantling, climbing,descending,working or when it is in a stationary position. 4. Never attempt to move a mobile scaffold fi•om the top. The force necessary to move the scaffold should be applied as closely as practical to the base. 5. Never place platform planks on guardrails to obtain greater height. 6. Never place ladders or other objects on top of a platform to increase height. 7. Do not ride on mobile scaffolds unless the following conditions exist: A. The floor or surface is within 3 degrees of level and free of debris,cracks and(roles. B. The minimum base dimension of the scaffold is at least half of its height. Outriggers,if used,must be installed on both sides. C. Ensure that all tools and materials are secured or removed from the platform.