ASME B30.3-2025 pdf download,Tower Cranes.

ASME B30.3-2025 is a safety standard titled “Stacker Cranes (Top or Under Running, Multiple Girder, with Top or Under Running Trolley Hoist).” It provides comprehensive safety requirements for the specific design, construction, installation, inspection, testing, maintenance, and operation of these types of specialized cranes.

ASME B30.3-2025 primarily focuses on cranes where the bridge travels on elevated runways (top running) or suspended from runways (under running), feature multiple girders for the bridge structure, and utilize a trolley-mounted hoist that similarly runs on top of or underneath the bridge girders. Key aspects covered include structural and mechanical design criteria, electrical systems, hoist and trolley mechanisms, runway construction, and safety devices. Its core objective is to establish guidelines that protect personnel and ensure the safe functioning of this equipment in industrial settings, such as warehouses and storage facilities, where they are commonly used for automated high-density storage and retrieval.