ASME B30.8:2004 pdf free download

ASME B30.8:2004 pdf free download.FLOATING CRANES AND FLOATING DERRICKS.
The load rating of a floating crane or floating derrick is dependent upon it structural competence, rope strength, hoist capacity and structural attachment to the floating platform of the crane or derrick, and upon stability and freeboard of the floating platform. barge, or pontoon upon which it is mounted.
8.1.1.2 Rated Loads
(a) Rated loads shall he the maximum working loads at various radii as determined by the manufacturer or qualified person considering list and trim for each installation.
(b) When deck loads are to be carried while lifting, the situation should be specifically analyted for modified ratings.
(c) When mounted on barges or pontoons, the rated loads and radii of land cranes and derricks shall be modified as recommended by the manufacturer or qualified person.
8-1.1.3 Rated Load Marking
A durable rating chart with legible letters and figures shall be provided with each crane or derrick and used at a hxation visible to the operator while seated at his control station, These data shall also be available at the ob site office. The data and information to be provided shall include, but not necessarily be limited to, the following:
(a) a full and complete range of crane or derrick load ratings at all stated operating radii and booni angles, and for all permissible boom lengths, jib lengths, and angles
(b) the list and trim conditions on which the load rating chart is based
(c) recommended parts of hoist reeving, site, and type of rope for various loads should be shown either on the rating chart or in the operating manual
(d) essential precautionary or warning notes relative to limitations on equipment, operating procedures. and stability factors such as deck loads, list, trim, weather conditions, and paras. ti-i 22(b)(2)(b) through (e) should be shown either on the rating chart or in the operating manual
8-1.2.1 Structural Competence
(a) Floating cranes and floating derricks shall be capable of withstanding the loads imposed on all components under normal operation conditions when installed and handling loads not exceeding the manufacturer’s load ratings with recommended reeving, and in accordance with other conditions specified herein. Stresses created by such loads shall not exceed the limitations specified in the code or standard governing the design of the crane or derrick.
(b) Barges or pontoons shall be capable of withstanding imposed operational and in-transit loads under conditions specified by the crane or derrick manufacturer. Stwsses created by such loads shall not exceed the limitaLions specified in the code or standard governing the design of the barge or pontoon.
(c) Welding shall conform to recommended practices of the American Welding Society as outlined in ANSI! AWS D1.1 or ANSI/AWS D14.3 as applicable.
8-1.2.2 OperationaL Criteria
(a) Operating List and Trim. The lift system, comprising th crane os derrick mounted on the barge hull or ponloon, shall be analyzed by a qualified person to determine barge or pontoon list and trim under all permitted operating conditions do not exceed the following.