Electronic Code of Federal Regulations
|
e-CFR data is current as of February 25, 2021 |
Title 29 → Subtitle B → Chapter XVII → Part 1915 → Subpart G → §1915.118 |
Title 29: Labor
PART 1915—OCCUPATIONAL SAFETY AND HEALTH STANDARDS FOR SHIPYARD EMPLOYMENT
Subpart G—Gear and Equipment for Rigging and Materials Handling
§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 |
1Three 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, Apr. 20, 1982, as amended at 61 FR 26351, May 24, 1996; 67 FR 44543, July 3, 2002; 76 FR 33610, June 8, 2011]