WAC 296-304-07011   Use of gear.  (1) Loads shall be safely rigged before being hoisted.

     (2) Plates shall be handled on and off hulls by means of shackles whenever possible. Clips or pads of ample size shall be welded to the plate to receive the shackle pins whenever there are no holes in the plate. When it is not possible to make holes in or to weld pads to the plate, alligator tongs, grab hooks, grab clamps or screw clamps may be used. In such cases special precautions shall be taken to keep employees from under such lifts.

     (3) Tag lines shall be provided on loads likely to swing or to need guidance.

     (4) When slings are secured to eyebolts, the slings shall be so arranged, using spreaders if necessary, that the pull is within 20 degrees of the axis of the bolt.

     (5) Slings shall be padded by means of wood blocks or other suitable material where they pass over sharp edges or corners of loads so as to prevent cutting or kinking.

     (6) Skips shall be rigged to be handled by not less than 3 legged bridles, and all legs shall always be used. When open end skips are used, means shall be taken to prevent the contents from falling.

     (7) Loose ends of idle legs of slings in use shall be hung on the hook.

     (8) Employees shall not be permitted to ride the hook or the load.

     (9) Loads (tools, equipment or other materials) shall not be swung or suspended over the heads of employees.

     (10) Pieces of equipment or structure susceptible to falling or dislodgement shall be secured or removed as early as possible.

     (11) An individual who is familiar with the signal code in use shall be assigned to act as a signalman when the hoist operator cannot see the load being handled. Communications shall be made by means of clear and distinct visual or auditory signals except that verbal signals shall not be permitted.

     (12) Pallets, when used, shall be of such material and construction and so maintained as to safely support and carry the loads being handled on them.

     (13) A section of hatch through which materials or equipment are being raised, lowered, moved, or otherwise shifted manually or by a crane, winch, hoist, or derrick, shall be completely opened. The beam or pontoon left in place adjacent to an opening shall be sufficiently lashed, locked or otherwise secured to prevent it from moving so that it cannot be displaced by accident.

     (14) Hatches shall not be opened or closed while employees are in the square of the hatch below.

     (15) Before loads or empty lifting gear are raised, lowered, or swung, clear and sufficient advance warning shall be given to employees in the vicinity of such operations.

     (16) At no time shall an employee be permitted to place himself in hazardous position between a swinging load and a fixed object.

TABLE E-1


DIMENSIONS AND SPACING OF WOOD

INDEPENDENT-POLE SCAFFOLD MEMBERS

  Light duty

(Up to 25 pounds

per square foot)		   Heavy duty

(25 to 75 pounds

per square foot)
Structural

Members		 Height in feet

   Height in feet
 

< 24

>24<40

40<60

<24

>24<40

40<60
Poles or uprights (in

inches) . . . . . . . . . . . .

2x4

3x4

or

2x6

4x4

3x4

4x4

4x6
Bearers (in inches) . . . . . . . . . . . . 2x4 2x6 2x6 2x8 2x8 2x10
Ledgers (in inches) . . . . . . . . . . . . 2x6 2x6 2x6 2x8 2x8 2x8
Stringer (not support-

ing bearers) (in

inches) . . . . . . . . . . . .



1x6



1x6



1x6



1x6



1x6



1x6
Braces (in inches) . . . . . . . . . . . . 1x4 1x6 1x6 1x6 1x6 1x6
Pole spacing—longi-

tudinally (in feet) . . . . . . . . . . . .

7 1/2

7 1/2

7 1/2

7

7

7
Pole spacing—trans-

versely (in feet) . . . . . . . . . . . .

6 1/2 min

7 1/2 min

8 1/2 min

6 1/2

10

10
Ledger spacing—verti-

cally (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 x 2 3/4 1 7/8 x 3 3/4
16 . . . . . . . . . . . . 1 7/8 x 2 3/4 1 7/8 x 3 3/4
17 . . . . . . . . . . . . 1 7/8 x 3 1 7/8 x 4
18 . . . . . . . . . . . . 1 7/8 x 3 1 7/8 x 4
20 . . . . . . . . . . . . 1 7/8 x 3 1 7/8 x 4 1/2
24 . . . . . . . . . . . . 1 7/8 x 3 1 7/8 x 4 1/2

TABLE E-3


SPECIFICATIONS FOR THE CONSTRUCTION OF HORSES




Structural		 Height in feet
Members <10
 >10<16 16<20
  Inches Inches Inches
Legs . . . . . . . . . . . . 2x4 3x4 4x6
Bearers or headers 2x6 2x8 4x6
Crossbraces . . . . . . . . . . . . 2x4

or

1x8		 2x4 2x6
Longitudinal braces . . . . . . . . . . . .
2x4 2x6 2x6
TABLE E-4


SAFE CENTER LOADS FOR SCAFFOLD PLANK

OF 1,100 POUNDS FIBRE STRESS

[Codification note: The graphic presentation of this table has been varied in order that it would fall within the printing specifications for the Washington Administrative Code. The following table had lumber dimensions in the table heading typed in vertically across the page while the remainder of the table was typed horizontally on the page. The "Span in Feet" materials (6 through 16) which ran top to bottom has been switched to run left to right on the page. The "Lumber dimensions in inches" which ran left to right on the page has been switched to run top to bottom on the page.]


Lumber Span in Feet
dimensions  
in inches 6 8 10 12 14 16
A-2 x 10
B-1 5/8 x 9 1/2 256 192 153 128 110 –––
A-2 x 12
B-1 5/8 x 11 1/2 309 232 186 155 133 116
A-3 x 8
B-2 5/8 x 7 1/2 526 395 316 263 225 197
A-3 x 10
B-2 5/8 x 9 1/2 667 600 400 333 286 250
A-3 x 12
B-2 5/8 x 11 1/2 807 605 484 404 346 303
  (A)—Rough lumber.  
  (B)—Dressed lumber.  

TABLE G-1


MANILA ROPE

(in pounds or tons of 2000 pounds)


Cir-

cum-

fer-

ence		 Dia-

meter

in

Inches		 Single

Leg

———

60°

———

45°

———

30°

———
   
3/4 1/4 120 lbs. 204 lbs. 170 lbs. 120 lbs.
1 5/1 6 200 346 282 200
1-1/8 3/8 270 467 380 270
1-1/4 7/1 6 350 605 493 350
1-3/8 15/3 2 450 775 635 450
1-1/2 1/2 530 915 798 530
1-3/4 9/1 6 690 1190 973 690
2 5/8 880 1520 1240 880
2-1/4 3/4 1080 1870 1520 1080
2-1/2 13/1 6 1300 2250 1830 1300
2-3/4 7/8 1540 2660 2170 1540
3 1   1800 3120 2540 1800
3-1/4 1-1/1 6 1.0 tons 1.7 tons 1.4 tons 1.0 tons
3-1/2 1-1/8 1.2 2.1 1.7 1.2
3-3/4 1-1/4 1.3 5 2.3 1.9 1.3 5
4 1-5/1 6 1.5 2.6 2.1 1.5
4-1/2 1-1/2 1.8 3.1 2.5 1.8
5 1-5/8 2.2 5 3.9 3.2 2.2 5
5-1/2 1-3/4 2.6 4.5 3.7 2.6
6 2   3.1 5.4 4.4 3.1
6-1/2 2-1/8 3.6 6.2 5.1 3.6

TABLE G-2


RATED CAPACITIES FOR IMPROVED PLOW

STEEL, INDEPENDENT WIRE ROPE CORE,

WIRE ROPE AND WIRE ROPE SLINGS

(in tons of 2000 pounds)


    SINGLE LEG
  Rope Vertical Choker
  Dia.      
  Inches A B C A B C
6X19 CLASSIFICATION
  1/4"   .5 9 .5 6 .5 3 .4 4 .4 2 .4 0
  3/8"   1.3   1.2   1.1   .9 8 .9 3 .8 6
  1/2"   2.3   2.2   2.0   1.7   1.6   1.5  
  5/8"   3.6   3.4   3.0   2.7   2.5   2.2  
  3/4"   5.1   4.9   4.2   3.8   3.6   3.1  
  7/8"   6.9   6.6   5.5   5.2   4.9   4.1  
  1"     9.0   8.5   7.2   6.7   6.4   5.4  
  1-1/8"   11.0   10.0   9.0   8.5   7.8   6.8
  
6X37 CLASSIFICATION
  1-1/4"   13.   12.   10.   9. 9 9. 2 7. 9
  1-3/8"   16.   15.   13.   12.   11.   9. 6
  1-1/2"   19.   17.   15.   14.   13.   11.  
  1-3/4"   26.   24.   20.   19.   18.   15.  
  2"     33.   30.   26.   25.   23.   20.  
  2-1/4"   41.   38.   33.   31.   29.   25.
  
  (A) - Socket or swaged terminal attachment
  (B) - Mechanical sleeve attachment.
  (C) - Hand tucked splice attachment.

TABLE G-3


RATED CAPACITIES FOR

IMPROVED PLOW STEEL,

INDEPENDENT WIRE ROPE CORE,

WIRE ROPE SLINGS

(in tons of 2000 pounds)


[Codification note: The graphic presentation of this table has been varied slightly in order that it would fall within the printing specifications for the Washington Administrative Code. The following table was too wide to be accommodated in the width of the WAC column. The table as codified has been divided into two tables covering the "TWO—LEG BRIDLE OR BASKET HITCH" for 6x19 Classification and for 6x37 Classification. Part One has Rope Diameter in Inches for Vertical and 60° within the two classifications. Part Two has Rope Diameter in Inches for 45° and 30° within the two classifications.]



TWO - LEG BRIDLE OR BASKET HITCH

(TABLE G-3: Part 1--Vertical and 60° Positions)
Rope



Dia.		 Vertical 60°
  Inches A B C A B C
6X19 CLASSIFICATION
1/4" 1. 2 1. 1 1. 0 1. 0 . 97 . 92
3/8" 2. 6 2. 5 2. 3 2. 3 2. 1 2. 0
1/2" 4. 6 4. 4 3. 9 4. 0 3. 8 3. 4
5/8" 7. 2 6. 8 6. 0 6. 2 5. 9 5. 2
3/4" 10. 9. 7 8. 4 8. 9 8. 4 7. 3
7/8" 14. 13. 11. 12. 11. 9. 6
1"   18. 17. 14. 15. 15. 12.
  1-1/8"   23.   21.   18.   19.   18.   16.
  
6X37 CLASSIFICATION
1-1/4" 26. 24. 21. 23. 21. 18.
1-3/8" 32. 29. 25. 28. 25. 22.
1-1/2" 38. 35. 30. 33. 30. 26.
1-3/4" 51. 47. 41. 44. 41. 35.
2"   66. 61. 53. 57. 53. 46.
2-1/4" 83. 76. 66. 72. 66. 57.

               TWO - LEG BRIDLE OR BASKET HITCH

               (TABLE G-3: Part 2--45° and 30° Positions)
  Rope



Dia.		 45° 30°
  Inches A B C A B C
6X19 CLASSIFICATION
  1/4" . 83 . 79 . 75 . 59 . 56 . 53
  3/8" 1. 8 1. 8 1. 6 1. 3 1. 2 1. 1
  1/2" 3. 2 3. 1 2. 8 2. 3 2. 2 2. 0
  5/8" 5. 1 4. 8 4. 2 3. 6 3. 4 3. 0
  3/4" 7. 2 6. 9 5. 9 5. 1 4. 9 4. 2
  7/8" 9. 8 9. 3 7. 8 6. 9 6. 6 5. 5
  1"   13.   12.   10.   9. 0 8. 5 7. 2
  1-1/8" 16.   15.   13.   11.   10.   9. 0
6X37 CLASSIFICATION
  1-1/4" 19.   17.   15.   13.   12.   10.  
  1-3/8" 22.   21.   18.   16.   15.   13.  
  1-1/2" 27.   25.   21.   19.   17.   15.  
  1-3/4" 36.   33.   29.   26.   24.   20.  
  2"   47.   43.   37.   33.   30.   26.  
  2-1/4" 58.   54.   47.   41.   38.   33.
  
  (A) - Socket or swaged terminal attachment.
  (B) - Mechanical sleeve attachment.
  (C) - Hand tucked splice attachment.

TABLE G-4


RATED CAPACITIES FOR

IMPROVED PLOW STEEL,

FIBER CORE, WIRE ROPE AND

WIRE ROPE SLINGS

(in tons of 2000 pounds)


 
SINGLE LEG
Rope    
Dia. Vertical   Choker
  Inches A B C A B C
6X19 CLASSIFICATION
1/4 . 55 . 51 . 49 . 41 . 38 . 37
3/8 1. 2 1. 1 1. 1 . 91 . 85 . 80
1/2 2. 1 2. 0 1. 8 1. 6 1. 5 1. 4
5/8 3. 3 3. 1 2. 8 2. 5 2. 3 2. 1
3/4 4. 8 4. 4 3. 9 3. 6 3. 3 2. 9
7/8 6. 4 5. 9 5. 1 4. 8 4. 5 3. 9
1   8. 4 7. 7 6. 7 6. 3 5. 8 5. 0
  1-1/8   10.   9. 5 8. 4 7. 9 7. 1 6. 3
6X37 CLASSIFICATION
1-1/4 12. 11. 9. 8 9. 2 8. 3 7. 4
1-3/8 15. 13. 12.   11. 10. 8. 9
1-1/2 17. 16. 14.   13. 12. 10.
1-3/4 24. 21. 19.   18. 16. 14.
  2     31.   28.   25.   23.   21.   18.
  
(A) - Socket or swaged terminal attachment.
(B) - Mechanical sleeve attachment.
(C) - Hand tucked splice attachment.

TABLE G-5


RATED CAPACITIES FOR IMPROVED PLOW

STEEL, FIBER CORE, WIRE ROPE SLINGS

(in tons of 2000 pounds)


[Codification note: The graphic presentation of this table has been varied slightly in order that it would fall within the printing specifications for the Washington Administrative Code. The following table was too wide to be accommodated in the width of the WAC column. The table as codified has been divided into two tables covering the "TWO - LEG BRIDLE OR BASKET HITCH" for 6x19 Classification and for 6x37 Classification. Part One has Rope Diameter in Inches for Vertical and 60° within the two classifications. Part Two has Rope Diameter in Inches for 45° and 30° within the two classifications.]



TWO - LEG BRIDLE OR BASKET HITCH

(TABLE G-5: Part 1--Vertical and 60° Positions)
Rope



Dia.		 Vertical 60°
  Inches A B C A B C
6X19 CLASSIFICATION
1/4 1. 1 1. 0 . 99 . 95 . 88 . 85
3/8 2. 4 2. 2 1. 9 2. 1 1. 9 1. 8
1/2 4. 3 3. 9 3. 7 3. 7 3. 4 3. 2
5/8 6. 7 6. 2 5. 6 5. 8 5. 3 4. 8
3/4 9. 5 8. 8 7. 8 8. 2 7. 6 6. 8
7/8 13. 12. 10. 11. 10. 8. 9
1   17. 15. 13. 14. 13. 11.
  1-1/8   21.   19.   17.   18.   16.   14.  
6X37 CLASSIFICATION
1-1/4 25. 22. 20. 21. 19. 17.
1-3/8 30. 27. 24. 26. 23. 20.
1-1/2 35. 23. 28. 30. 27. 24.
1-3/4 48. 43. 38. 41. 37. 33.
2   62. 55. 49. 53. 48. 43.

TWO - LEG BRIDLE OR BASKET HITCH

(TABLE G-5: Part 2--45° and 30° Positions)
  Rope



Dia.		 45° 30°
  Inches A B C A B C
6X19 CLASSIFICATION
  1/4   . 77 . 72 . 70 . 55 . 51 . 49
  3/8   1. 7 1. 6 1. 5 1. 2 1. 1 1. 1
  1/2   3. 0 2. 8 2. 6 2. 1 2. 0 1. 8
  5/8   4. 7 4. 4 4. 0 3. 3 3. 1 2. 8
  3/4   6. 7 6. 2 5. 5 4. 8 4. 4 3. 9
  7/8   9. 1 8. 4 7. 3 6. 4 5. 9 5. 1
  1     12.   11.   9. 4 8. 4 7. 7 6. 7
  1-1/8   15.   13.   12.   10.   9. 5 8. 4
6X37 CLASSIFICATION
  1-1/4   17.   16.   14.   12.   11.   9. 8
  1-3/8   21.   19.   17.   15.   13.   12.  
  1-1/2   25.   22.   20.   17.   16.   14.  
  1-3/4   34.   30.   27.   24.   21.   19.  
  2     43.   39.   35.   31.   28.   25.
  
  (A) - Socket or swaged terminal attachment.
  (B) - Mechanical sleeve attachment.
  (C) - Hand tucked splice attachment.

TABLE G-6


NUMBER AND SPACING OF U-BOLT WIRE

ROPE CLIPS


    Number of Clips
Improved

plow

steel rope

diameter

inches		  





Drop

forged





Other

material



Minimum

spacing

(inches)
* . . . . . . . . . . . . ... ...
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
  
*Three clips shall be used on wire size less than 1/2-inch diameter.

TABLE G-7


WROUGHT IRON CHAIN

(in pounds or tons of 2000 pounds)

Nominal

Size		 Single

Leg		 60° 45° 30°
Chain

Stock

Inch
* 1/4 1060 1835 1500 1060
  * 5/1 6 1655 2865 2340 1655
  3/8 2385 2.1 3370 2385
  * 7/1 6 3250 2.8 2.3 3250
  1/2 12.1 13.7 13.0 12.1
  * 9/1 6 12.7 14.6 13.8 12.7
  5/8 13.3 15.7 14.7 13.3
  3/4 14.8 18.3 16.7 14.8
  7/8 16.5 11.2 19.2 16.5
  1   18.5 14.7 12.0 18.5
  1- 1/8 10.0 17.3 14.2 10.0
  1- 1/4 12.4 21.4 17.5 12.4
  1- 3/8 15.0 25.9 21.1 15.0
  1- 1/2 17.8 30.8 25.2 17.8
  1- 5/8 20.9 36.2 29.5 20.9
  1- 3/4 24.2 42.0 34.3 24.2
  1- 7/8 27.6 47.9 39.1 27.6
  2   31.6 54.8 44.8 31.6
* These sizes of wrought iron chain are no longer manufactured in the United States.

TABLE G-8


ALLOY STEEL CHAIN

(in tons of 2000 pounds)


Nominal

Size		 Single

Leg		 60° 45° 30°
Chain

Stock

Inch
1/4 1.62 2.82 2.27 1.62
3/8 3.30 5.70 4.65 3.30
1/2 5.62 9.75 7.90 5.62
5/8 8.25 14.25 11.65 8.25
3/4 11.5 19.9 16.2 11.5
7/8 14.3 24.9 20.3 14.3
1   19.3 33.4 27.3 19.8
1-1/8 22.2 38.5 31.5 22.2
1-1/4 28.7 49.7 40.5 28.7
1-3/8 33.5 58.0 47.0 33.5
1-1/2 39.7 68.5 56.0 39.7
1-5/8 42.5 73.5 59.5 42.5
1-3/4 47.0 81.5 62.0 47.0

TABLE G-9


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 . . . . . . . . . . . . 1/64
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 . . . . . . . . . . . . 1/32

TABLE G-10


SAFE WORKING LOADS FOR SHACKLES

(in tons of 2,000 pounds)


Material

size

(inches)		   Pin

diameter

(inches)		 Safe

working

load
1/2 . . . . . . . . . . . . 5/8   1.4  
5/8 . . . . . . . . . . . . 3/4   2.2  
3/4 . . . . . . . . . . . . 7/8   3.2  
7/8 . . . . . . . . . . . . 1     4.3  
1 . . . . . . . . . . . . 1 1/8   5.6  
1 1/8 . . . . . . . . . . . . 1 1/4   6.7  
1 1/4 . . . . . . . . . . . . 1 3/8   8.2  
1 3/8 . . . . . . . . . . . . 1 1/2   10.0  
1 1/2 . . . . . . . . . . . . 1 5/8   11.9  
1 3/4 . . . . . . . . . . . . 2     16.2  
2 . . . . . . . . . . . . 2 1/4   21.2  




[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. 03-04-099, § 296-304-07011, filed 2/4/03, effective 8/1/03; Order 74-25, § 296-304-07011, filed 5/7/74.]