- Part Number:1915
- Part Number Title:Occup. Safety and Health Standards for Shipyard Employment
- Subpart:1915 Subpart G
- Subpart Title:Gear and Equipment for Rigging and Materials Handling
- Standard Number:
- Title:Tables.
- GPO Source:
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) | 7½ | 7½ | 7½ | 7 | 7 | 7 |
Pole spacing—transversely (in feet) | 6½ min | 7½ min | 8½ min | 6½ | 10 | 10 |
Ledger spacing—vertically (in feet) | 7 | 7 | 7 | 4½ | 4½ | 4½ |
Table E-2—Specifications for Side Rails of Ladders
Length (in feet) | Cross section (in inches) | |
---|---|---|
At ends | At center | |
15 | 1⅞ × 2¾ | 1⅞ × 3¾ |
16 | 1⅞ × 2¾ | 1⅞ × 3¾ |
18 | 1⅞ × 3 | 1⅞ × 4 |
20 | 1⅞ × 3 | 1⅞ × 4 |
20 | 1⅞ × 3 | 1⅞ × 4½ |
Table E-3—Specifications for the Construction of Horses
Structural members | Height in feet | ||
---|---|---|---|
≤10 | >10≤16 | >10≤16 | |
inches | inches | inches | |
Legs | 2 × 4 | 3 × 4 | 4 × 6 |
Bearers or headers | 2 × 6 | 2 × 8 | 4 × 6 |
Crossbraces | 2 × 4 | 2 × 6 | 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 | 1⅝ × 9½ | 2 × 12 | 1⅝ × 11½ | 3 × 8 | 2⅝ × 7½ | 3 × 10 | 2⅝ × 9½ | 3 × 12 | 2⅝ × 11½ | |
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) | |||
½ | 3 | 4 | 3 |
⅝ | 3 | 4 | 3¾ |
¾ | 4 | 5 | 4½ |
⅞ | 4 | 5 | 5¼ |
1 | 4 | 6 | 6 |
1⅛ | 5 | 6 | 6¾ |
1¼ | 5 | 7 | 7½ |
1⅜ | 6 | 7 | 8¼ |
1½ | 6 | 8 | 9 |
1 Three clips shall be used on wire size less than ½ -inch diameter.
Table G-2—Maximum Allowable Wear at Any Point of Link
Chain size in inches | Maximum allowable wear in fraction of inches |
---|---|
¼ (9/32) | 3/64 |
⅜ | 5/64 |
½ | 7/64 |
⅝ | 9/64 |
¾ | 5/32 |
⅞ | 11/64 |
1 | 3/16 |
1⅛ | 7/32 |
1¼ | ¼ |
1⅜ | 9/32 |
1½ | 5/16 |
1¾ | 11/32 |
[61 fr 26321, May 24, 1996; 67 FR 44543, July 3, 2002; 76 FR 33610, July 8, 2011]