NAVY - UFGS-41 22 13.15
BRIDGE CRANES, OVERHEAD ELECTRIC, UNDER RUNNING
|Publication Date:||1 April 2008|
This guide specification covers requirements for top running and under running single girder electric traveling (OET) cranes with under running trolleys and hoists, Crane Manufacturers Association of America (CMAA) 74 Class A, B and C and with capacities less than 9 metric ton10 ton9072 kg20,000 pounds.
Single girder underrunning crane configuration is not recommended for spans greater than 40 feet or capacities greater than 20,000 lbs. See Section 41 22 13.14 for double girder configurations more appropriate at longer spans and higher capacities.