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These inspections should be carried out at 6 monthly intervals for all lifting items and at least every 12 months for those that could be covered by PUWER, although a competent person may determine different time scales. Standards state that as a minimum; Every six months for lifting equipment used for lifting/lowering persons.
The anchor selection, together with additional reinforcement, and rigging arrangements is influenced by: - The dead weight of the element - The number of anchors in the element and the configuration of the anchor - Capacity of the anchor at the specific concrete compressive strengths at time of lift - The dynamic loads applied during lifting ...
Rigging comes from rig, to set up or prepare. Rigging is the equipment such as wire rope, turnbuckles, clevis, jacks used with cranes and other lifting equipment [1] in material handling and structure relocation. Rigging systems commonly include shackles, master links and slings, and lifting bags in underwater lifting.
1971 – OSHA passes 29 CFR 1926.550, which is the standard for cranes and derricks used in construction for the next 41 years. [3]1995 – The National Commission for the Certification of Crane Operators (NCCCO) is established by the crane and lifting industry as a nonprofit organization to develop a certification program for crane operators.
The provisions in this Standard apply to the design or modification of below-the-hook lifting devices. As such: WLL = MBL / SF. SWL is no longer used to identify the maximum capacity of equipment due to it being too vague and leaving it open for legal issues. The US and European standards switched to The Working Load Limit' standard shortly after.
A block and tackle [1] [2] or only tackle [3] is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.. The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and one moves with the load.
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
Rigging of an asymmetrical scaffolding piece: the lifting beam is blue, the load is attached to the beam using grey slings. The lifting beam (also known as traverse, spreader beam) is a steel beam that is attached to the hook of the crane in order to spread the slings from one end of an elongated load (like a wall panel) to another. The bottom ...
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