![]() (c) Load ratings where stability governs lifting performance. ![]() (b) Where boom or jib ratings are limited by structural competence, such ratings shall be clearly shown and emphasized on the rating charts. Load ratings shall be expressed in terms related to method of measuring boom angle and length or lifting radius. ![]() In addition, no crane shall be rerated unless such rating changes are approved by the certified agent. The chart shall also contain essential precautionary or warning notes relative to limitations on equipment and operating procedures, including indication of the least stable position. The chart shall contain a full and complete range of crane load ratings, consistent with the manufacturers' recommendations, at all stated operating radii or boom angles and for all permissible boom lengths, jib lengths and angles, also alternate ratings for use and non-use of optional equipment on the mobile crane, such as outriggers and counterweights which affect ratings. ![]() (a) A durable load chart with clearly legible letters and figures provided by the certified agent shall be securely fixed to the crane in a location clearly visible to the operator or within reach of the operator while at the control station. ![]()
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