29 CFR Part 1918, Appendix II
Note: This appendix is mandatory and is to be used in the appropriate sections of part 1918 when certificates or the manufacturers' use recommendations are not available.
| Improved plow steel, rope (Inches (cm)) | Minimum number of clips | Minimum spacing (Inches (cm)) |
|---|---|---|
| Drop forged | Othermaterial | |
| 1⁄2 or less (1.3) | 3 | 4 | 3 (7.6) |
| 5⁄8 (1.6) | 3 | 4 | 33⁄4 (9.5) |
| 3⁄4 (1.9) | 4 | 5 | 41⁄2 (11.4) |
| 7⁄8 (2.2) | 4 | 5 | 51⁄4 (13.3) |
| 1 (2.5) | 5 | 6 | 6 (15.2) |
| 11⁄8 (2.9) | 6 | 6 | 63⁄4 (17.1) |
| 11⁄4 (3.2) | 6 | 7 | 71⁄2 (19.1) |
| 13⁄8 (3.5) | 7 | 7 | 81⁄4 (21.0) |
| 11⁄2 (3.8) | 7 | 8 | 9 (22.9) |
| Rope diameter nominal inch | Vertical hitch | Choker hitch | Angle of rope to vertical |
| 0 deg. | 30 deg. | 45 deg. | 60 deg. |
| 1⁄2 | 550 | 250 | 1,100 | 900 | 750 | 550 |
| 9⁄16 | 700 | 350 | 1,400 | 1,200 | 1,000 | 700 |
| 5⁄8 | 900 | 450 | 1,800 | 1,500 | 1,200 | 900 |
| 3⁄4 | 1,100 | 550 | 2,200 | 1,900 | 1,500 | 1,100 |
| 13⁄16 | 1,300 | 650 | 2,600 | 2,300 | 1,800 | 1,300 |
| 7⁄8 | 1,500 | 750 | 3,100 | 2,700 | 2,200 | 1,500 |
| 1 | 1,800 | 900 | 3,600 | 3,100 | 2,600 | 1,800 |
| 11⁄16 | 2,100 | 1,100 | 4,200 | 3,600 | 3,000 | 2,100 |
| 11⁄8 | 2,400 | 1,200 | 4,800 | 4,200 | 3,400 | 2,400 |
| 11⁄4 | 2,700 | 1,400 | 5,400 | 4,700 | 3,800 | 2,700 |
| 15⁄16 | 3,000 | 1,500 | 6,000 | 5,200 | 4,300 | 3,000 |
| 11⁄2 | 3,700 | 1,850 | 7,400 | 6,400 | 5,200 | 3,700 |
| 15⁄8 | 4,500 | 2,300 | 9,000 | 7,800 | 6,400 | 4,500 |
| 13⁄4 | 5,300 | 2,700 | 10,500 | 9,200 | 7,500 | 5,300 |
| 2 | 6,200 | 3,100 | 12,500 | 10,500 | 8,800 | 6,200 |
| 21⁄8 | 7,200 | 3,600 | 14,500 | 12,500 | 10,000 | 7,200 |
| 21⁄4 | 8,200 | 4,100 | 16,500 | 14,000 | 11,500 | 8,200 |
| 21⁄2 | 9,300 | 4,700 | 18,500 | 16,000 | 13,000 | 9,300 |
| 25⁄8 | 10,500 | 5,200 | 21,000 | 18,000 | 14,500 | 10,500 |
Endless Sling
| 1⁄2 | 950 | 500 | 1,900 | 1,700 | 1,400 | 950 |
|---|---|---|---|---|---|---|
| 9⁄16 | 1,200 | 600 | 2,500 | 2,200 | 1,800 | 1,200 |
| 5⁄8 | 1,600 | 800 | 3,200 | 2,700 | 2,200 | 1,600 |
| 3⁄4 | 2,000 | 950 | 3,900 | 3,400 | 2,800 | 2,000 |
| 13⁄16 | 2,300 | 1,200 | 4,700 | 4,100 | 3,300 | 2,300 |
| 7⁄8 | 2,800 | 1,400 | 5,600 | 4,800 | 3,900 | 2,800 |
| 1 | 3,200 | 1,600 | 6,500 | 5,600 | 4,600 | 3,200 |
| 11⁄16 | 3,800 | 1,900 | 7,600 | 6,600 | 5,400 | 3,800 |
| 11⁄8 | 4,300 | 2,200 | 8,600 | 7,500 | 6,100 | 4,300 |
| 11⁄4 | 4,900 | 2,400 | 9,700 | 8,400 | 6,900 | 4,900 |
| 15⁄16 | 5,400 | 2,700 | 11,000 | 9,400 | 7,700 | 5,400 |
| 11⁄2 | 6,700 | 3,300 | 13,500 | 11,500 | 9,400 | 6,700 |
| 15⁄8 | 8,100 | 4,100 | 16,000 | 14,000 | 11,500 | 8,100 |
| 13⁄4 | 9,500 | 4,800 | 19,000 | 16,500 | 13,500 | 9,500 |
| 2 | 11,000 | 5,600 | 22,500 | 19,500 | 16,000 | 11,000 |
| 21⁄8 | 13,000 | 6,500 | 26,000 | 22,500 | 18,500 | 13,000 |
| 21⁄4 | 15,000 | 7,400 | 29,500 | 25,500 | 21,000 | 15,000 |
| 21⁄2 | 16,500 | 8,400 | 33,500 | 29,000 | 23,500 | 16,500 |
| 25⁄8 | 18,500 | 9,500 | 37,000 | 32,500 | 26,500 | 18,500 |
Polypropylene Rope and Rope Slings
Load Capacity in Pounds (lbs.) Safety Factor = 6
Eye and Eye Sling
Basket Hitch
Angle of rope to horizontal
| Rope diameter nominal in. | Vertical hitch | Choker hitch | Angle of rope to vertical |
|---|---|---|---|
| 0 deg. | 30 deg. | 45 deg. | 60 deg. |
| 1⁄2 | 650 | 350 | 1,300 | 1,200 | 950 | 650 |
| 9⁄16 | 800 | 400 | 1,600 | 1,400 | 1,100 | 800 |
| 5⁄8 | 1,000 | 500 | 2,000 | 1,700 | 1,400 | 1,000 |
| 3⁄4 | 1,300 | 700 | 2,700 | 2,300 | 1,900 | 1,300 |
| 13⁄16 | 1,600 | 800 | 2,600 | 2,300 | 2,200 | 1,600 |
| 7⁄8 | 1,800 | 900 | 3,100 | 2,700 | 2,600 | 1,800 |
| 1 | 2,200 | 1,100 | 3,600 | 3,100 | 3,100 | 2,200 |
| 11⁄16 | 2,500 | 1,300 | 4,200 | 3,600 | 3,600 | 2,500 |
| 11⁄8 | 2,900 | 1,500 | 4,800 | 4,200 | 4,100 | 2,900 |
| 11⁄4 | 3,300 | 1,700 | 6,700 | 5,800 | 4,700 | 3,300 |
| 15⁄16 | 3,700 | 1,900 | 7,400 | 6,400 | 5,300 | 3,700 |
| 11⁄2 | 4,700 | 2,400 | 9,400 | 8,100 | 6,700 | 4,700 |
| 15⁄8 | 5,700 | 2,900 | 11,500 | 9,900 | 8,100 | 5,700 |
| 13⁄4 | 6,800 | 3,400 | 13,500 | 12,000 | 9,600 | 6,800 |
| 2 | 8,200 | 4,100 | 16,500 | 14,500 | 11,500 | 8,200 |
| 21⁄8 | 9,700 | 4,800 | 19,500 | 16,500 | 13,500 | 9,700 |
| 21⁄4 | 11,000 | 5,500 | 22,000 | 19,000 | 15,500 | 11,000 |
| 21⁄2 | 12,500 | 6,300 | 25,500 | 22,000 | 18,000 | 12,500 |
| 25⁄8 | 14,500 | 7,100 | 28,500 | 24,500 | 20,000 | 14,500 |
Polypropylene Rope and Rope Slings
Load Capacity in Pounds (lbs.) Safety Factor = 6
Endless Sling
Basket Hitch
Angle of rope to horizontal
90 deg. 60 deg. 45 deg. 30 deg.
| Rope diameter nominal in. | Vertical hitch | Choker hitch | Angle of rope to vertical |
|---|---|---|---|
| 0 deg. | 30 deg. | 45 deg. | 60 deg. |
| 1⁄2 | 1,200 | 600 | 2,400 | 2,100 | 1,700 | 1,200 |
| 9⁄16 | 1,500 | 750 | 2,900 | 2,500 | 2,100 | 1,500 |
| 5⁄8 | 1,800 | 900 | 3,500 | 3,100 | 2,500 | 1,800 |
| 3⁄4 | 2,400 | 1,200 | 4,900 | 4,200 | 3,400 | 2,400 |
| 13⁄16 | 2,800 | 1,400 | 5,600 | 4,900 | 4,000 | 2,800 |
| 7⁄8 | 3,300 | 1,600 | 6,600 | 5,700 | 4,600 | 3,300 |
| 1 | 4,000 | 2,000 | 8,000 | 6,900 | 5,600 | 4,000 |
| 11⁄16 | 4,600 | 2,300 | 9,100 | 7,900 | 6,500 | 4,600 |
| 11⁄8 | 5,200 | 2,600 | 10,500 | 9,000 | 7,400 | 5,200 |
| 11⁄4 | 6,000 | 3,000 | 12,000 | 10,500 | 8,500 | 6,000 |
| 15⁄16 | 6,700 | 3,400 | 13,500 | 11,500 | 9,500 | 6,700 |
| 11⁄2 | 8,500 | 4,200 | 17,000 | 14,500 | 12,000 | 8,500 |
| 15⁄8 | 10,500 | 5,100 | 20,500 | 18,000 | 14,500 | 10,500 |
| 13⁄4 | 12,500 | 6,100 | 24,500 | 21,000 | 17,500 | 12,500 |
| 2 | 15,000 | 7,400 | 29,500 | 25,500 | 21,000 | 15,000 |
| 21⁄8 | 17,500 | 8,700 | 35,500 | 30,100 | 24,500 | 17,500 |
| 21⁄4 | 19,500 | 9,900 | 39,500 | 34,000 | 28,000 | 19,500 |
| 21⁄2 | 23,000 | 11,500 | 45,500 | 39,500 | 32,500 | 23,000 |
| 25⁄8 | 25,500 | 13,000 | 51,500 | 44,500 | 36,500 | 25,500 |
| Chain size nominal | Single leg sling-90 deg. to horizontal loading | Rated load double leg sling horizontal angle (note 2) | |
| inch | mm | lb | kg | 60 deg.Double at 60 deg. | 45 deg.Double at 45 deg. | 30 deg.Double at 30 deg. |
| lb | kg | lb | kg | lb | kg |
| 1⁄4 | 7 | 3,500 | 1,570 | 6,100 | 2,700 | 4,900 | 2,200 | 3,500 | 1,590 |
| 3⁄8 | 10 | 7,100 | 3,200 | 12,300 | 5,500 | 10,000 | 4,500 | 7,100 | 3,200 |
| 1⁄2 | 13 | 12,000 | 5,400 | 20,800 | 9,400 | 17,000 | 7,600 | 1,200 | 5,400 |
| 5⁄8 | 16 | 18,100 | 8,200 | 31,300 | 14,200 | 25,600 | 11,600 | 18,100 | 8,200 |
| 3⁄4 | 20 | 28,300 | 12,800 | 49,000 | 22,300 | 40,000 | 18,200 | 28,300 | 12,900 |
| 7⁄8 | 22 | 34,200 | 15,500 | 59,200 | 27,200 | 48,400 | 22,200 | 34,200 | 15,700 |
| 1 | 26 | 47,700 | 21,600 | 82,600 | 37,900 | 67,400 | 31,000 | 47,700 | 21,900 |
| 11⁄4 | 32 | 72,300 | 32,800 | 125,200 | 56,800 | 102,200 | 46,400 | 72,300 | 32,800 |
Notes:
(1) Other grades of proof tested steel chain include Proof Coil (Grade 28), Hi-Test (grade 43 Chain, and Transport (grade 70) Chain. These grades are not recommended for overhead lifting and therefore are not covered by this standard.
(2) Rating of multi-leg slings adjusted for angle of loading between the inclined leg and the horizontal plane of the load.
| Nominal chain or coupling link size | Maximum allowable wear of cross-sectional diameter, in. |
|---|---|
| inch | mm |
| 1⁄4 | 7 | 0.037 |
| 3⁄8 | 10 | 0.052 |
| 1⁄2 | 13 | 0.06 |
| 5⁄8 | 16 | 0.084 |
| 3⁄4 | 20 | 0.105 |
| 7⁄8 | 22 | 0.116 |
| 1 | 26 | 0.137 |
| 11⁄4 | 32 | 0.169 |
Note: For other sizes, consult chain or sling manufacturer.
| Material size | Pin diameter | Safe working load in 2,000 lb tons |
|---|---|---|
| Inches | (cm) | Inches | (cm) |
| 1⁄2 | (1.3) | 5⁄8 | (1.6) | 1.4 |
| 5⁄8 | (1.6) | 3⁄4 | (1.9) | 2.2 |
| 3⁄4 | (1.9) | 7⁄8 | (2.2) | 3.2 |
| 7⁄8 | (2.2) | 1 | (2.5) | 4.3 |
| 1 | (2.5) | 11⁄8 | (2.9) | 5.6 |
| 11⁄8 | (2.9) | 11⁄4 | (3.2) | 6.7 |
| 11⁄4 | (3.2) | 13⁄8 | (3.5) | 8.2 |
| 13⁄8 | (3.5) | 11⁄2 | (3.8) | 10 |
| 11⁄2 | (3.8) | 15⁄8 | (4.1) | 11.9 |
| 13⁄4 | (4.4) | 2 | (5.1) | 16.2 |
| 2 | (5.1) | 21⁄4 | (5.7) | 21.2 |
| Vertical | Choker | |
| Rope diameter, inch | HT | MS | S | HT, MS&S |
| 1⁄4 | 0.49 | 0.51 | 0.55 | 0.38 |
| 5⁄16 | 0.78 | 0.79 | 0.85 | 0.6 |
| 3⁄8 | 1.1 | 1.1 | 1.2 | 0.85 |
| 7⁄16 | 1.4 | 1.5 | 1.7 | 1.2 |
| 1⁄2 | 1.8 | 2 | 2.1 | 1.5 |
| 9⁄16 | 2.3 | 2.5 | 2.7 | 1.9 |
| 5⁄8 | 2.8 | 3.1 | 3.3 | 2.3 |
| 3⁄4 | 3.9 | 4.4 | 4.8 | 3.3 |
| 7⁄8 | 5.2 | 6 | 6.4 | 4.5 |
| 1 | 6.7 | 7.7 | 4.8 | 5.9 |
| 11⁄8 | 8.4 | 9.5 | 11 | 7.4 |
| 11⁄4 | 10 | 12 | 13 | 9 |
| 13⁄8 | 12 | 14 | 15 | 11 |
| 11⁄2 | 15 | 17 | 18 | 13 |
| 15⁄8 | 17 | 19 | 21 | 15 |
| 13⁄4 | 20 | 22 | 25 | 17 |
| 2 | 26 | 29 | 32 | 22 |
HT = Hand Tucked Splice.
For Hidden Tuck Splice (IWRC), use vales in HT (FC) columns.
MS = Mechanical Splice.
S = Poured Socket or Swaged Socket.
Note: (1) These values are based on slings being vertical. If they are not vertical, the rated load shall be reduced. If two or more slings are used, the minimum horizontal angle between the slings shall also be considered.
| Vertical | Choker | Vertical basket |
|---|---|---|
| Rope diameter, inch | HT | MS | S | HT, MS&S | [Note (2)] HT | [Note (3)] MS&S |
| 1⁄4 | 0.53 | 0.59 | 0.59 | 0.31 | 1.1 | 1.1 |
| 5⁄16 | 0.82 | 0.87 | 0.92 | 0.64 | 1.6 | 1.7 |
| 3⁄8 | 1.2 | 1.2 | 1.3 | 0.92 | 2.3 | 2.5 |
| 7⁄16 | 1.5 | 1.7 | 1.8 | 1.2 | 3.1 | 3.4 |
| 1⁄2 | 2 | 2.2 | 2.3 | 1.6 | 4 | 4.4 |
| 9⁄16 | 2.5 | 2.8 | 2.9 | 2 | 1.9 | 5.5 |
| 5⁄8 | 3 | 3.4 | 3.6 | 2.6 | 6 | 6.8 |
| 3⁄4 | 4.2 | 4.9 | 5.1 | 3.6 | 8.4 | 9.7 |
| 7⁄8 | 5.5 | 6.6 | 6.9 | 4.8 | 11 | 13 |
| 1 | 7.2 | 8.5 | 9 | 6.3 | 14 | 17 |
| 11⁄8 | 9 | 10 | 11 | 7.9 | 18 | 20 |
| 11⁄4 | 11 | 13 | 14 | 9.7 | 22 | 26 |
| 13⁄8 | 13 | 15 | 17 | 12 | 27 | 31 |
| 11⁄2 | 16 | 18 | 20 | 14 | 32 | 37 |
| 15⁄8 | 18 | 21 | 23 | 16 | 37 | 43 |
| 13⁄4 | 21 | 25 | 27 | 19 | 43 | 49 |
| 2 | 28 | 32 | 34 | 24 | 55 | 64 |
HT = Hand tucked Splice
For Hidden Tuck Splice (IWRC), use values in HT columns of Table 3.
MS = Mechanical Splice. S = Poured Socket or Swaged Socket.
Notes:
(1) These values are based on slings being vertical. If they are not vertical, the rated load shall be reduced. If they are not vertical, the rated load shall be reduced. If two or more slings are used, the minimum horizontal angle between the slings shall also be considered.
(2) These values only apply when the D/d ratio is 15 or greater.
(3) These values only apply when the D/d ratio is 25 or greater.
D = Diameter or curvature around which the body of the sling is bent. d = Diameter of rope.
| Vertical | Choker | Vertical basket[note (2)] |
|---|---|---|
| Rope diameter | MS | S | MS&S | MS&S |
| 1⁄4 | 0.65 | 0.68 | 0.48 | 1.3 |
| 5⁄16 | 1 | 1.1 | 0.074 | 2 |
| 3⁄8 | 1.4 | 1.5 | 1.1 | 2.9 |
| 7⁄16 | 1.9 | 2 | 1.4 | 3.9 |
| 1⁄2 | 2.5 | 2.7 | 1.9 | 5.1 |
| 9⁄16 | 3.2 | 3.4 | 2.4 | 6.4 |
| 5⁄8 | 3.9 | 4.1 | 2.9 | 7.8 |
| 3⁄4 | 5.6 | 5.9 | 4.1 | 11 |
| 7⁄8 | 7.6 | 8 | 5.6 | 15 |
| 1 | 9.8 | 10 | 7.2 | 20 |
| 11⁄8 | 12 | 13 | 9.1 | 24 |
| 11⁄4 | 15 | 16 | 11 | 30 |
| 13⁄8 | 18 | 19 | 13 | 36 |
| 11⁄2 | 21 | 23 | 16 | 42 |
| 15⁄8 | 24 | 26 | 18 | 49 |
| 13⁄4 | 28 | 31 | 21 | 57 |
| 2 | 37 | 40 | 28 | 73 |
HT = Hand tucked Splice
For Hidden Tuck Splice (IWRC), use values in HT columns of Table 3.
MS = Mechanical Splice.
S = Poured Socket or Swaged Socket.
Note: (1) These values are based on slings being vertical. If they are not vertical, the rated load shall be reduced. If they are not vertical, the rated load shall be reduced. If two or more slings are used, the minimum horizontal angle between the slings shall also be considered.
(2) These values only apply when the D/d ratio is 25 or greater.
[62 FR 40202, July 25, 1997, as amended at 65 FR 40947, June 30, 2000]