Hoisting & Rigging

Nov 21, 20140 likes135 views

Three employees were injured in separate rigging accidents over a two month period. In the first incident, an employee was struck in the head by a metal pulley when the nylon sling it was attached to broke under tension. In the second incident, an employee was struck by a falling 2,000 pound concrete form that broke loose from its rigging during a crane lift. In the third incident, an employee was fatally struck on the head by a drilling pipe that came loose from its rigging during a lift. The document outlines 10 rules for rigging safety including knowing load weights, rigging capacities, center of gravity, sling angles, inspections, and using tag lines and signal persons.

Building Construction 8. formworks and scaffoldingsHamdija Velagic

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This document provides information about formwork, scaffolding, shoring, and underpinning. It defines each construction technique and describes the typical components and uses. Formwork supports wet concrete until it cures and is used for foundations, walls, columns, slabs, beams, and stairs. Scaffolding provides temporary work platforms at different heights using standards, ledgers, and boards. Shoring supports unsafe structures using horizontal, vertical, or inclined bracing. Underpinning strengthens foundations by installing supports beneath them.

Basic Scaffolding Awarenessedale07

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The document provides information on basic scaffolding, including an introduction, course content, types of scaffolds, scaffolding materials, tools, safety harnesses, and scafftags. The course content section outlines topics that will be covered, including what a scaffold is, different types of scaffolds, materials, tools, safety harnesses, and safe erection and dismantling procedures. It then provides descriptions and details about independent tied scaffolds, putlog scaffolds, bird cage tower scaffolds, roof saddle and stack scaffolds, and suspended scaffolds. The document also lists and describes common scaffolding materials and tools.

Scaffoldingjag89singh

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The document provides information on scaffolding safety training conducted by Mr. V N Parbhu at EERC Theramx Ltd. on September 24-25, 2012. It defines scaffolding and describes the main types of tubular scaffolding. It outlines the various parts of tubular scaffolding such as standards, ledgers, transoms, and couplers. The document discusses requirements for guardrails, toeboards, and access ladders on scaffolds. It also covers inspection procedures and checklists for competent persons, as well as applicable regulations from the Building and Other Construction Workers Act and Factories Act.

Crane Hoisting and RiggingDun-Rite Specialized Carriers

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Operating practicesANA ISABEL R.R.

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The centre of gravity (CG) is the point where the entire weight of a body or system of bodies is concentrated so that if supported at this point the body or system would remain in static equilibrium in any position. It is important to position the crane hook directly over the CG of a load for stability during lifting operations. Lifting a load with an offset CG can cause the load to shift until balance is restored with the CG below the hook. When lifting loads with an offset CG, one sling leg will take more of the load weight than the other, so the sling SWL should be based on the full load weight on one leg. Careful lifting is required as loads with an offset CG could kick in an unexpected manner once lifted