§ 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)	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

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

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	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.

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.

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]