Rigging Hazard AwarenessBetween the trolley hook and the load is RIGGINGRopes, Slings, ChainsSlings inspected daily Proper storage when not in useSuitable protection of rigging when in use (items with sharp corners, etc..)

Rules for Rigging SafetyKnow the weight of the loadKnow the center of gravity of the load.Make load attachment above the center of gravity of the load.Select hitch that will hold and control.Know the rated capacity of slings and hardware.

Rules for Rigging SafetySelect sling best suited for load.Inspect all rigging before the lift.Protect sling from sharp surfacesProper calculation of increased tension caused by sling angles (on all rigging components!).

Rules for Rigging SafetyAllow for D/d ratio on all wire rope slings.Calculate reductions when using choker hitch. Keep personnel clear from lift area.Lift load a few inches then check riggingKnow limitations of all lifting devices used.Lift slowly and stop slowly

Rigging equipment for material handling Rigging equipment inspections (By a Competent Person)Prior to use on each shift As necessary during its use to ensure that it is safe Defective rigging equipment removed from serviceNot be loaded in excess of its recommended safe working load

Rigging equipment for material handling Custom design grabs, hooks, clamps, or other lifting accessories, for such units as modular panels, prefabricated structures and similar materials Marked to indicate the safe working loadsBe proof-tested prior to use to 125 percent of their rated load

Rigging equipment for material handling Alloy steel chains Welded alloy steel chain slings Permanently affixed durable identification stating SizeGradeRated capacitySling manufacturer

Rigging equipment for material handlingAlloy steel chains Job or shop hooks and links, or makeshift fasteners, formed from bolts, rods, etc., or other such attachments, shall not be used

Rigging equipment for material handlingFour grades:Grade 28 General Utility ChainGrade 43 High Test ChainGrade 70 Binding ChainGrade 80 Alloy Steel Chain: The only one used for overhead lifting

Rigging equipment for material handling Alloy steel chainsInspections FrequentVisual examination by the userPeriodicComplete link by link inspection of the entire sling and all attachments.Documented

Rigging equipment for material handlingAlloy steel chains CP inspections made & based onFrequency of sling use; Severity of service conditions; Nature of lifts being made; and Experience gained on the service life of slings used in similar circumstances.Such inspections at least once a yearDocumented & available

Rigging equipment for material handling Wire rope slingsProtruding ends of strands in splices on slings and bridles covered or blunted Wire rope shall not be secured by knotsExcept for eye splices in the ends of wires and for endless rope slings, each wire rope used in hoisting or lowering, or in pulling loads, shall consist of one continuous piece without knot or splice

Rigging equipment for material handlingMechanical Splice

Rigging equipment for material handlingHand Tucked Eye Splice

Rigging equipment for material handlingSwaged Forged Eye

Rigging equipment for material handlingMechanical SpliceIllegal Pig Tail

Rigging equipment for material handlingWire rope slingsShall not be shortened with knots or bolts or other makeshift devices. Legs shall not be kinkedBasket hitch shall have the loads balanced to prevent slippagePadded or protected from the sharp edges

Rigging equipment for material handlingWire rope Hands or fingers shall not be placed between the sling and its load while the sling is being tightened around the loadA sling shall not be pulled from under a load when the load is resting on the sling

Rigging equipment for material handlingD/d RatioD - is diameter around which sling is bent.

d - is diameter of the sling.

Rigging equipment for material handlingWhen U-bolt wire rope clips used to form eyesU-bolt shall be applied so that the "U" section is in contact with the dead end of the rope

Never saddle a dead horse

Rigging equipment for material handlingSynthetic webbing (nylon, polyester, and polypropylene). The employer shall have each synthetic web sling marked or coded to show Name or trademark of manufacturer Rated capacities for the type of hitch Type of material Rated capacity shall not be exceeded

Rigging equipment for material handlingSynthetic webbing (nylon, polyester, and polypropylene) Remove from service immediately if: Acid or caustic burns Melting or charring of any part of the sling surface Snags, punctures, tears or cuts Broken or worn stitches Distortion of fittings

Rigging equipment for material handlingShackles and hooks Manufacturers identificationNever weld on hooks or shacklesWorking safety latch on hooks

Rigging equipment for material handlingRecommendedNot RecommendedRecommendedScrew Pin Anchor ShackleRound Pin Anchor ShackleBolt Type Anchor Shackle

Rigging equipment for material handlingNever replace a shackle pin with a bolt.The load will bend the bolt.

Rigging equipment for material handlingBadGoodAvoid eccentric loads.GoodBadProper chocking of shackles.

Rigging equipment for material handlingCheck wearCheck cracks, bending and twistingCheck wear and straightnessPin always seatedCheck opening width

Rigging equipment for material handlingHooks are designed to apply the load at the bottom of the saddle.

Rigging equipment for material handlingCheck for Cracks and TwistingCheck for Wear and CracksCheck for Wear and DeformationSigns of Opening UpCheck that Hook is Not Twisted15%10

Rigging equipment for material handling

Rigging equipment for material handlingApproximately 70%-80% of a straight pull

Rigging equipment for material handling90 basket hitch is approximately twice the capacity of a straight pull

Note: A good operating practice is to keep sling angles from going below 60 degrees 90604530How horizontal angle affects slings capacity

Rigging equipment for material handlingCalculating the load on sling legsDivide the total load by the number of sling legsThis quotient is the load on each leg if verticalMeasure the sling from the load attachment point, to the point where it connects with the hook or lifting device; this is LMeasure the vertical height from the top of the load to the hook or lifting device; this is HDivide the length of the leg by the height of the sling

LOADLHLoad Number of legs) X (L H) = Load each sling leg

ExampleLoad = 120,000 pounds4 load legs 120,000 equals 30,000 pounds each leg if vertical hitchSling legs are 20 feetHeight from top of load to lifting device is 15 feet20 15 = 1.33Load on each leg is 1.33 x 30,000 = 40,000 pounds

20'15'120,000 lb.

Center of GravityA load is stable when:The hook is directly above the center of gravity of the loadEstimate the center of gravityLift the load just enough to clear the groundIf the hook is not over the center of gravity the hook will travel to the center of gravityCG?

Center of GravityIf necessary, set the load down and adjust the riggingIf the load tips more than 3, the rigging should be adjustedThe longer the sling legs, the more stable the load will be

The longer set of sling legs (B) will improve load stabilityBA

Disposal of waste materials Materials are dropped more than 20 feet to any point lying outside the exterior walls of the building enclosed chute

Disposal of waste materials

Disposal of waste materials

Disposal of waste materialsDebris dropped through holes in the floor without the use of chutes Completely enclosed with barricades not less than 42 inches high Not less than 6 feet back from the projected edge of the opening above Signs warning of falling materials shall be posted at each level Removal shall not be permitted in this lower area until debris handling ceases above

Disposal of waste materialsScrap lumber, waste material, and rubbishRemoved from the immediate work area as the work progresses. Disposal of waste material or debris by burning Comply with local fire regulations All solvent waste, oily rags, and flammable liquids Kept in fire resistant covered containers until removed from worksite

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