#### § 1915.118 Tables.

The provisions of this section apply to ship repairing, shipbuilding and shipbreaking.

Table E-1—Dimensions and Spacing of Wood Independent-Pole Scaffold Members

| Structural members | Light duty (Up to 25 pounds per square foot)—Height in feet | | | Heavy duty (25 to 75 pounds per square foot)—Height in feet | | |
| --- | --- | --- | --- | --- | --- | --- |
| ≤24 | >24≤40 | >40≤60 | ≤24 | >24≤40 | >40≤60 |
| Poles or uprights (in inches) | 2 × 4 | 3 × 4 or 2 × 6 | 4 × 4 | 3 × 4 | 4 × 4 | 4 × 6 |
| Bearers (in inches) | 2 × 6 | 2 × 6 | 2 × 6 | 2 × 8 | 2 × 8 | 2 × 10 |
| Ledgers (in inches) | 2 × 6 | 2 × 6 | 2 × 6 | 2 × 8 | 2 × 8 | 2 × 8 |
| Stringers (not supporting bearers) (in inches) | 1 × 6 | 1 × 6 | 1 × 6 | 1 × 6 | 1 × 6 | 1 × 6 |
| Braces (in inches) | 1 × 4 | 1 × 6 | 1 × 6 | 1 × 6 | 1 × 6 | 1 × 6 |
| Pole spacing—longitudinally (in feet) | 71/2 | 71/2 | 71/2 | 7 | 7 | 7 |
| Pole spacing—transversely (in feet) | 61/2 min | 71/2 min | 81/2 min | 61/2 | 10 | 10 |
| Ledger spacing—vertically (in feet) | 7 | 7 | 7 | 41/2 | 41/2 | 41/2 |

Table E-2—Specifications for Side Rails of Ladders

| Length (in feet) | Cross section (in inches) | |
| --- | --- | --- |
| At ends | At center |
| 15 | 17/8 × 23/4 | 17/8 × 33/4 |
| 16 | 17/8 × 23/4 | 17/8 × 33/4 |
| 18 | 17/8 × 3 | 17/8 × 4 |
| 20 | 17/8 × 3 | 17/8 × 4 |
| 24 | 17/8 × 3 | 17/8 × 41/2 |

Table E-3—Specifications for the Construction of Horses

| Structural members | Height in feet | | |
| --- | --- | --- | --- |
| ≤10 | >10≤16 | 16≤20 |
| | *inches* | *inches* | *inches* |
| Legs | 2 × 4 | 3 × 4 | 4 × 6 |
| Bearers or headers | 2 × 6 | 2 × 8 | 4 × 6 |
| Crossbraces | 2 × 4 | 2 × 4 | 2 × 6 |
| | or | | |
| | 1 × 8 | | |
| Longitudinal braces | 2 × 4 | 2 × 6 | 2 × 6 |

Table E-4—Safe Center Loads for Scaffold Plank of 1,100 Pounds Fibre Stress

| Span in feet | Lumber dimensions in inches | | | | | | | | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| A | B | A | B | A | B | A | B | A | B |
| | 2 × 10 | 15/8 × 91/2 | 2 × 12 | 15/8 × 111/2 | 3 × 8 | 25/8 × 71/2 | 3 × 10 | 25/8 × 91/2 | 3 × 12 | 25/8 × 111/2 |
| 6 | 256 | | 309 | | 526 | | 667 | | 807 | |
| 8 | 192 | | 232 | | 395 | | 500 | | 605 | |
| 10 | 153 | | 186 | | 316 | | 400 | | 484 | |
| 12 | 128 | | 155 | | 263 | | 333 | | 404 | |
| 14 | 110 | | 133 | | 225 | | 286 | | 346 | |
| 16 | | | 116 | | 197 | | 250 | | 303 | |
| | | | | | | | | | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| (A)—Rough lumber. | | | | | | | | | | |
| (B)—Dressed lumber. | | | | | | | | | | |

Table G-1—Number and Spacing of U-Bolt Wire Rope Clips

| Improved plow steel, rope diameter, inches | Number of clips | | Minimum spacing, inches |
| --- | --- | --- | --- |
| Drop forged | Other material |
| (1) | | | |
| 1/2 | 3 | 4 | 3 |
| 5/8 | 3 | 4 | 33/4 |
| 3/4 | 4 | 5 | 41/2 |
| 7/8 | 4 | 5 | 51/4 |
| 1 | 4 | 6 | 6 |
| 11/8 | 5 | 6 | 63/4 |
| 11/4 | 5 | 7 | 71/2 |
| 13/8 | 6 | 7 | 81/4 |
| 11/2 | 6 | 8 | 9 |
| | | | |
| --- | --- | --- | --- |
| 1 Three clips shall be used on wire size less than 1/2-inch diameter. | | | |

Table G-2—Maximum Allowable Wear at Any Point of Link

| Chain size in inches | Maximum allowable wear in fraction of inches |
| --- | --- |
| 1/4(9/32) | 3/64 |
| 3/8 | 5/64 |
| 1/2 | 7/64 |
| 5/8 | 9/64 |
| 3/4 | 5/32 |
| 7/8 | 11/64 |
| 1 | 3/16 |
| 11/8 | 7/32 |
| 11/4 | 1/4 |
| 13/8 | 9/32 |
| 11/2 | 5/16 |
| 13/4 | 11/32 |

[[47 FR 16986](https://www.federalregister.gov/citation/47-FR-16986), Apr. 20, 1982, as amended at [61 FR 26351](https://www.federalregister.gov/citation/61-FR-26351), May 24, 1996; [67 FR 44543](https://www.federalregister.gov/citation/67-FR-44543), July 3, 2002; [76 FR 33610](https://www.federalregister.gov/citation/76-FR-33610), June 8, 2011]