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Subchapter 7. General Industry Safety Orders
Group 13. Cranes and Other Hoisting Equipment
Article 95. Derricks

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§4961. Rated Load Marking.

(a) For permanently installed derricks with fixed lengths of boom, guy and mast, a substantial durable and clearly legible rating chart shall be provided with each derrick and securely affixed where it is visible to personnel responsible for the safe operation of the equipment. The chart shall include but not necessarily be limited to the following data:

(1) Certified agent's approved load ratings at corresponding ranges of boom angle or operating radii.

(2) Specific length of components on which the load ratings are based.

(3) Required parts for hoisting reeving. Size and construction of the rope may be shown either on the rating chart or in the operating manual.

(b) For non-permanent installations, capacity charts shall be prepared for the particular installation based on information provided by the certified agent. The capacity charts shall be located at the derrick.

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


1. Amendment of subsection (b) filed 8-29-86; effective thirtieth day thereafter (Register 86, No. 39).

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