Crane longitudinal load application for seismic combination

[kvram]

Dear members,

The question is regarding crane longitudinal load application and combination with seismic check. When crane is under operation in between aisle columns/ interior columns , how to check for seismic forces with crane capacity? How to account for % of crane load for seismic check like in other live load case?

 

[RockEngineer]

Usually only the dead load of the crane is considered for seismic applications for cranes. The lifted load is not rigidly attached and can swing at a slow frequency so it is ignored. For the seismic load the dead load of the crane should be treated just like the building. See thread 507-26112 Bridge Crane Seismic loads on Buildings.