§ 1915.118 Tables.
The provisions of this section apply to ship repairing, shipbuilding and shipbreaking.
Open Table
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
|
Open Table
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
|
Open Table
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 |
Open Table
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. |
Open Table
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. |
Open Table
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]