29 CFR § 1915.118 - Tables.

§ 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) 7 1/2 7 1/2 7 1/2 7 7 7
Pole spacing - transversely (in feet) 6 1/2 min 7 1/2 min 8 1/2 min 6 1/2 10 10
Ledger spacing - vertically (in feet) 7 7 7 4 1/2 4 1/2 4 1/2

Table E-2 - Specifications for Side Rails of Ladders

Length (in feet) Cross section (in inches)
At ends At center
15 1 7/8 × 2 3/4 1 7/8 × 3 3/4
16 1 7/8 × 2 3/4 1 7/8 × 3 3/4
18 1 7/8 × 3 1 7/8 × 4
20 1 7/8 × 3 1 7/8 × 4
24 1 7/8 × 3 1 7/8 × 4 1/2

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 1 5/8 × 9 1/2 2 × 12 1 5/8 × 11 1/2 3 × 8 2 5/8 × 7 1/2 3 × 10 2 5/8 × 9 1/2 3 × 12 2 5/8 × 11 1/2
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 3 3/4
3/4 4 5 4 1/2
7/8 4 5 5 1/4
1 4 6 6
1 1/8 5 6 6 3/4
1 1/4 5 7 7 1/2
1 3/8 6 7 8 1/4
1 1/2 6 8 9

1 Three 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
1 1/8 7/32
1 1/4 1/4
1 3/8 9/32
1 1/2 5/16
1 3/4 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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