This information is provided free of charge by the Department of Industrial Relations from its web site at These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at

Subchapter 13. Logging and Sawmill Safety Orders
Article 8. Logging Machines

Return to index
New query

§6305. A-Frames, Towers, Masts, Etc.

(a) A-frames, towers, and masts shall be of design and construction that provides adequate structural strength, and of sufficient vertical clearance or height for positive control of material or loads.

(b) The apex and base of A-frames and similar devices shall be secured to prevent displacement.

(c) The A-frame shall be guyed with two back guys and one front guy or snap line. In lieu of a snap line, a back stiff leg may be used.

(d) Where mobile A-frames, towers, masts, or similar devices are used, all rigging on such devices shall be inspected; worn or defective parts shall be replaced or repaired before the devices are raised or used on each respective setting.

(e) Rigging shall conform to the requirements of Article 7.

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


1. Editorial correction of subsection (e) filed 3-11-81 (Register 81, No. 11).

Go BackGo Back to Article 8 Table of Contents