C.F.R. » Title 29 » CHAPTER XVII—OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › PART 1915—OCCUPATIONAL SAFETY AND HEALTH STANDARDS FOR SHIPYARD EMPLOYMENT › Subpart G—Gear and Equipment for Rigging and Materials Handling

29 C.F.R. § 1915.118

Tables

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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 membersLight duty (Up to 25 pounds per square foot)—Height in feetHeavy 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 × 43 × 4 or 2 × 64 × 43 × 44 × 44 × 6
Bearers (in inches)2 × 62 × 62 × 62 × 82 × 82 × 10
Ledgers (in inches)2 × 62 × 62 × 62 × 82 × 82 × 8
Stringers (not supporting bearers) (in inches)1 × 61 × 61 × 61 × 61 × 61 × 6
Braces (in inches)1 × 41 × 61 × 61 × 61 × 61 × 6
Pole spacing—longitudinally (in feet)71⁄271⁄271⁄2777
Pole spacing—transversely (in feet)61⁄2 min71⁄2 min81⁄2 min61⁄21010
Ledger spacing—vertically (in feet)77741⁄241⁄241⁄2

Table E-2—Specifications for Side Rails of Ladders

Length (in feet)Cross section (in inches)
At endsAt center
1517⁄8 × 23⁄417⁄8 × 33⁄4
1617⁄8 × 23⁄417⁄8 × 33⁄4
1817⁄8 × 317⁄8 × 4
2017⁄8 × 317⁄8 × 4
2417⁄8 × 317⁄8 × 41⁄2

Table E-3—Specifications for the Construction of Horses

Structural membersHeight in feet
≤10>10≤1616≤20
inchesinchesinches
Legs2 × 43 × 44 × 6
Bearers or headers2 × 62 × 84 × 6
Crossbraces2 × 42 × 42 × 6
or
1 × 8
Longitudinal braces2 × 42 × 62 × 6

Table E-4—Safe Center Loads for Scaffold Plank of 1,100 Pounds Fibre Stress

Span in feetLumber dimensions in inches
ABABABABAB
2 × 1015⁄8 × 91⁄22 × 1215⁄8 × 111⁄23 × 825⁄8 × 71⁄23 × 1025⁄8 × 91⁄23 × 1225⁄8 × 111⁄2
6256309526667807
8192232395500605
10153186316400484
12128155263333404
14110133225286346
16116197250303
(A)—Rough lumber.
(B)—Dressed lumber.

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

Improved plow steel, rope diameter, inchesNumber of clipsMinimum spacing, inches
Drop forgedOther material
(1)
1⁄2343
5⁄83433⁄4
3⁄44541⁄2
7⁄84551⁄4
1466
11⁄85663⁄4
11⁄45771⁄2
13⁄86781⁄4
11⁄2689
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 inchesMaximum allowable wear in fraction of inches
1⁄4(9⁄32)3⁄64
3⁄85⁄64
1⁄27⁄64
5⁄89⁄64
3⁄45⁄32
7⁄811⁄64
13⁄16
11⁄87⁄32
11⁄41⁄4
13⁄89⁄32
11⁄25⁄16
13⁄411⁄32
[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]