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§ 1915.118 Tables.

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

Expand 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
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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
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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
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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.

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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.

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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]


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