Crane Loading
Crane Loading
(OP)
Hi, I'm designing the footings for a metal building (designed by others) that will house a 50 ton crane. The metal building designer has provided me with the reactions at each frame. One of those reactions is the crane load which accounts for the crane moving. I am having a difficult time figuring out how to incorporate that load into my load combinations. Should I just treat it as a live load?






RE: Crane Loading
BA
RE: Crane Loading
RE: Crane Loading
If you want to get into the semantics, every gantry design I've ever seen is capable of being moved without power.
RE: Crane Loading
You should also make sure any impact factors have already been applied and that the crane load you've been given is a maximum. Look at the AIST Technical Report No. 13 for details.
And don't forget the lateral loads for your shear.
RE: Crane Loading
This advice is based upon the fact that you do not have the crane specification in your contract with the building owner and are not the EOR for the entire project which would include the specification of the serviceability requirements of the PEMB. Best to have some type of clarification as to who is responsible for this specification. Typically, if you are the EOR for the entire project you would be specifying all the governing codes and minimum live loads, including crane loading for the project. Most likely, you'll be the EOR for foundations only, and the PEMB is designed and built per MBMA code and you will not the EOR for the building, but some reasonable checks on the column/footing/anchorage design would be assumed which is sounds like you are doing. Hope this helps,...lots of other information here (Eng-tips) on the PEMB/EOR issue, may find some similar posts if you look.