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Subchapter 13. Logging and Sawmill Safety Orders
Article 7. Rigging

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§6296. Rigging Trees.

(a) All tree straps shall be of the best material and at least 1/4-inch larger than the pulling lines. D's shall be attached in accordance with manufacturer's specifications. Straps shall be properly seated.

(b) All blocks and tree jacks shall be properly hung. They shall not be hung in one eye or within the bight of straps. Mainline straps shall be hung and maintained no more than 10 inches below the guylines at the side of the tree opposite the block. When necessary, tree plates or a holdup strap shall be used to maintain the position of the mainline lead straps.

(c) The use of threaded straps for running line blocks in spar trees is prohibited.

(d) Shackles used to hang all blocks and jacks on trees or loading booms shall have the pins secured by a nut with a cotter key or wire strand. Wire strands so used shall be run twice through the pin and the loose ends rolled in. The jaws of shackles shall fit the yoke or swivel of the block or jack.

(e) Safety straps shall be used on all mainline lead blocks rigged below the guylines. They shall be of at least 1-inch, with one end securely fastened to the block and the other to a shackle arranged to slide on the guylines. The pin of this shackle shall be securely held in place by a cotter key or molle. The heel of the shackle shall encircle the guyline.

(f) Safety straps shall be attached to the guyline which will carry the block in the direction of least hazard to employees. This guyline is usually the guyline nearest the logging lead. Any guyline which is used for this purpose shall not have an extension.

(g) Whenever a safety strap would carry a block or line to a place where employees habitually work, the safety strap shall be 1/2-inch larger than the pulling line, the shackle and block shall be in good condition, and the block shall not be of the swivel type.

(h) Spar tree rigging shall be placed and operated so that lines will not rub or saw other lines, straps, blocks, or other equipment.

(i) Yarding with more than one donkey at one time at any spar tree is prohibited.

(j) Swinging or yarding with a V or diamond lead is prohibited.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. Amendment of subsection (f) filed 2-6-85; effective thirtieth day thereafter (Register 85, No. 6).

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