§ 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

Open Table
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) 712 712 712 7 7 7
Pole spacing—transversely (in feet) 612 min 712 min 812 min 612 10 10
Ledger spacing—vertically (in feet) 7 7 7 412 412 412

Table E–2—Specifications for Side Rails of Ladders

Open Table
Length (in feet) Cross section (in inches)
At ends At center
15 178 × 234 178 × 334
16 178 × 234 178 × 334
18 178 × 3 178 × 4
20 178 × 3 178 × 4
24 178 × 3 178 × 412

Table E–3—Specifications for the Construction of Horses

Open Table
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

Open Table
Span in feet Lumber dimensions in inches
A B A B A B A B A B
2 × 10 158 × 912 2 × 12 158 × 1112 3 × 8 258 × 712 3 × 10 258 × 912 3 × 12 258 × 1112
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

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

Open Table
Improved plow steel, rope diameter, inches Number of clips Minimum spacing, inches
Drop forged Other material
(1)
12 3 4 3
58 3 4 334
34 4 5 412
78 4 5 514
1 4 6 6
118 5 6 634
114 5 7 712
138 6 7 814
112 6 8 9

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

Open Table
Chain size in inches Maximum allowable wear in fraction of inches
14(932) 364
38 564
12 764
58 964
34 532
78 1164
1 316
118 732
114 14
138 932
112 516
134 1132

[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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