Bending in columns

[Finell]

I need to size a column and base plate.
The column will be free standing and will support a jib crane of 5m radius with a maximum load of 500kg with 180 deg rotation. The column needs to be 8m in height. The spacing between the jib mounting brackets is 1110mm. Can anyone point me in the right direction. I need to show calcs.
Regards

Finell

 

[SperlingPE]

first step
Free Body Diagram and Statics to calculate your loads

 

[DaveAtkins]

Draw a free body diagram, and solve for your forces (moment, shear, axial). Size the column, using AISC. Remember to check deflection. Size the base plate, remembering to design for vertical force AND moment. Make sure the column is anchored to a foundation large enough to prevent overturning.

DaveAtkins

 

[mrMikee]

From what I remember it's generally deflection that controls the design of a jib crane column. As DaveAtkins suggests be sure to check this out, you might be surprised what it is.

Do you plan on bolting this to the floor or to its own foundation? The calculations to determine the capacity of a floor slab are fairly complicated and the typical concrete floor is seldom strong enough. When the floor slab is not adequate a block type foundation needs to be constructed. For jib cranes these can get to be pretty big due to overturning.

There was a short thread about a month back that you might want to check out... thread507-132340

Regards,
-Mike