1. Rigging Hazard Awareness
Between the trolley hook and the load is RIGGING
Ropes, Slings, Chains
Slings inspected daily
Proper storage when not in use
Suitable protection of rigging when in use (items with sharp corners, etc..)

2. Rules for Rigging Safety
Know the weight of the load
Know 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.

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

4. Rules for Rigging Safety
Allow 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 rigging
Know limitations of all lifting devices used.
Lift slowly and stop slowly

5. 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 service
Not be loaded in excess of its recommended safe working load

6. 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 loads
Be proof-tested prior to use to 125 percent of their rated load

7. Rigging equipment for material handling
Alloy steel chains
Welded alloy steel chain slings
Permanently affixed durable identification stating
Size
Grade
Rated capacity
Sling manufacturer

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

9. Rigging equipment for material handling
Four grades:
Grade 28 General Utility Chain
Grade 43 High Test Chain
Grade 70 Binding Chain
Grade 80 Alloy Steel Chain: The only one used for overhead lifting
G 80

10. Rigging equipment for material handling
Alloy steel chains
Inspections
Frequent
Visual examination by the user
Periodic
Complete link by link inspection of the entire sling and all attachments.
Documented

11. Rigging equipment for material handling
Alloy steel chains
CP inspections made & based on
Frequency 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 year
Documented & available

12. Rigging equipment for material handling
Wire rope slings
Protruding ends of strands in splices on slings and bridles covered or blunted
Wire rope shall not be secured by knots
Except 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

13. Rigging equipment for material handling
Mechanical Splice

14. Rigging equipment for material handling
Hand Tucked Eye Splice

15. Rigging equipment for material handling
Swaged Forged Eye

16. Rigging equipment for material handling
Illegal Pig Tail
Mechanical Splice

17. Rigging equipment for material handling
Wire rope slings
Shall not be shortened with knots or bolts or other makeshift devices.
Legs shall not be kinked
Basket hitch shall have the loads balanced to prevent slippage
Padded or protected from the sharp edges

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

19. Rigging equipment for material handling
D/d Ratio D d
D - is diameter around which sling is bent.
d - is diameter of the sling.

20. Rigging equipment for material handling
When U-bolt wire rope clips used to form eyes
U-bolt shall be applied so that the "U" section is in contact with the dead end of the rope
“Never saddle a dead horse”

21. Rigging equipment for material handling
Synthetic 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

22. Rigging equipment for material handling
Synthetic 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

23. Rigging equipment for material handling
Shackles and hooks
Manufacturers’ identification
Never weld on hooks or shackles
Working safety latch on hooks

24. Rigging equipment for material handling
Not Recommended
Recommended
Recommended
Screw Pin Anchor Shackle
Round Pin Anchor Shackle
Bolt Type Anchor Shackle

25. Rigging equipment for material handling
Never replace a shackle pin with a bolt.
The load will bend the bolt.

26. Rigging equipment for material handling
Avoid eccentric loads.
Proper chocking of shackles.
Bad
Good
Bad
Good

27. Rigging equipment for material handling
Check cracks, bending and twisting
Check wear
Check wear and straightness
Pin always seated
Check opening width

28. Rigging equipment for material handling
LOAD
Hooks are designed to apply the load at the bottom of the saddle.

29. Rigging equipment for material handling
Check for Wear and Deformation
Signs of “Opening Up”
Check for Cracks and Twisting
15%
10º
Check that Hook is Not Twisted
Check for Wear and Cracks

30. Rigging equipment for material handling

31. Rigging equipment for material handling
Approximately 70%-80% of a straight pull

32. Rigging equipment for material handling
90° basket hitch is approximately twice the capacity of a straight pull

33. How horizontal angle affects slings capacity
1000 LBS
500 LBS
577 LBS
707 LBS
90
60°
45°
30°
Note: A good operating practice is to keep sling angles from going below 60 degrees

34. Rigging equipment for material handling
Calculating the load on sling legs
Divide the total load by the number of sling legs
This quotient is the load on each leg if vertical
Measure the sling from the load attachment point, to the point where it connects with the hook or lifting device; this is ‘L’
Measure the vertical height from the top of the load to the hook or lifting device; this is ‘H’
Divide the length of the leg by the height of the sling

35. Load  Number of legs) X (L  H) = Load each sling leg

36. Example
Load = 120,000 pounds
4 load legs ÷ 120,000 equals 30,000 pounds each leg if vertical hitch
Sling legs are 20 feet
Height from top of load to lifting device is 15 feet
20 ÷ 15 = 1.33
Load on each leg is 1.33 x 30,000 = 40,000 pounds
20'
15'
120,000 lb.

37. Center of Gravity A load is stable when:
The hook is directly above the center of gravity of the load
Estimate the center of gravity
Lift the load just enough to clear the ground
If the hook is not over the center of gravity the hook will travel to the center of gravity
CG?

38. The longer set of sling legs (B) will improve load stability
Center of Gravity
If necessary, set the load down and adjust the rigging
If the load tips more than 3°, the rigging should be adjusted
The longer the sling legs, the more stable the load will be B
The longer set of sling legs (B) will improve load stability A

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

40. Disposal of waste materials

41. Disposal of waste materials

42. Disposal of waste materials
Debris 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

43. Disposal of waste materials
Scrap lumber, waste material, and rubbish
Removed 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

44. Questions