ASME B30.29:2018 pdf download

ASME B30.29:2018 pdf download.Self-Erecting Tower Cranes
The ASME B30 Standard contains provisions thatapply to the construction, installation, operation, inspection, testing, maintenance, and use of cranes and other lifting and material-movement-related equipment. For the convenience of the reader, the Standard has been divided into separate volumes. Each volume has been written under the direction of the ASME B30 Standards Committee and has successfully completed a consensus approval process under the general auspices of the American National Standards Institute (ANSI).
Volume B30.29 includes provisions that apply to the construction, operation, inspection, testing, and mainte- nance of powered self-erecting tower cranes that adjust operating radius by means of a trolley traversing a jib. These may be horizontal, elevated, articulating, or telescoping, and used for vertical lifting and lowering of freely suspended, unguided loads that consist of equip- ment and materials. Self-erecting tower cranes have vertical or nearly vertical masts that are bottom slewing and mounted on fixed, traveling, or mobile bases. The cranes are capable of moving or being moved from job site to job site fully assembled or nearly fully assembled. This Volume does not apply to cranes used for nonver- tical lifting service or lifting a guided load, or to truck- mounted material delivery cranes with a tubular boom and trolley traversing the boom. Tower cranes (refer to ASME B30.3) and mobile crane tower attachments (refer to ASME B30.5) are not within the scope of this Volume.
accessory: a secondary part or assembly of parts that contributes to the overall function and usefulness of a machine. administrative or regulatory authority: governmental agency, or the employer in the absence of governmental jurisdiction. axis of rotation: the vertical line about which a crane swings. axle: the shaft or spindle with which or about which a wheel rotates. On wheel-mounted cranes, it refers to a type ofaxle assembly including housings, gearing, differ- ential, bearings, and mounting appurtenances. balanced: the condition of the superstructure of a self- erecting crane necessary for telescoping the mast; the load is positioned at that radius that causes the vertical moment ofthe superstructure about the balance point to go to zero. ballast: weights added to the fixed frame to create addi- tional stability or to counter the effects of the lifted load. bogie: the assembly that includes a pivot, frame, axle(s), and wheel(s) on which a crane rides on rails, and includes an assemblyoftwo or more axles arranged to permitboth vertical wheel displacement and an equalization of loading on the wheels. brake: a device other than a motor used for retarding or stopping motion by friction or power means. braking means: a method or device for retarding or stop- ping motion. buffer: an energy-absorbing device for reducing impact when a moving crane or trolley reaches the end of its permitted travel.cab: a housing provided for the operator and containing the crane controls. controlstation: the location ofthe crane function controls, either cab-mounted or by remote control. counterweight: weights added to the rotating frame to create additional stability or to counter the effects of the lifted load. crane: in this Volume, the use ofthe word “crane” refers to self-erecting cranes, which are lifting machines, mounted on a base, with a superstructure consisting of a mast, rotating frame, and a jib. crossoverpoints: points ofrope contactwhere one layerof rope on a rope drum crosses over the previous layer. directsupervision: a designated operatorin the immediate area of the trainee, within visual sighting distance, and able to effectively communicate with the trainee. The designatedoperatorshallhavenodutiesotherthanobser- ving the operation of the crane by the trainee. dismantle: to fold/retract and disassemble crane for removal or relocation. dog everything: apply or engage all brakes, locks, and pawls. drum: the cylindrical member around which rope is wound; used for multiple functions on the crane.