B30.3 applies to "construction tower cranes" and "permanently fixed tower cranes" which are powered via electrical vehicles or inner combustion engines and that fluctuate their working radius by way of a luffing growth mechanism, a trolley traversing a horizontal jib, or a mix of the 2.

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Additional resources for ASME B30-3-CONSTRUCTION OF TOWER CRANES

Sample text

Records shall be kept of apparent extemai conditions to provide a basis for continuing evaluation. 1 General. The manufacturer shall furnish operation and maintenance information [see paras. 1(c) to (f)]. -- (b) ali control mechanisms for excessive wear of components and contamination by lubricants or other foreign matter; (c) ail crane function operating mechanisms for maladjustment interfering with proper operation and excessive wear of components; (d) motion limiting devices for proper operation with the crane unloaded; each motion should be inched into its limiting device or run in at slow speed with care exercised; ( e ) load limiting devices for proper operation and accuracy of settings; V, ail hydrauiic and pneumatic hoses, particularly those that flex in no& operation; (g) electrical apparatus for malfunctioning, signs of excessive deterioration, dirt, and moisture accumulation.

3a-I997 ~ _ _ _ _ _ _ S T D - A S M E B I O - 3 A - E N G L L777 D 0 7 5 7 b 7 0 0 5 8 8 2 2 b 113 D CONTENTS -|| | || | | | Foreword . . . . . . . . . . . . . . . . . Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary of Changes . ... 111 v vii | | |||| || | | | || || ||| || --- Introduction General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope ....................

4 Wire rope clips used in conjunction with wedge sockets shall be ‘0 *e unloaded dead end of the rope only (see Fig. 8). 1 Superstructures and counterjibs (counterweight jib) shail be arranged to receive counterweights, made in accordance with the crane manufacturer’s specifications, and to hold them in position. Means shaü be provided to guard against shifting or dislodgement during crane operation. 2 Movable counterweights, if provided, shaü either move automatically or shall be equipped with a position indicator with readout at the operator’s station(s).

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