Structural Design of Solid Waste Push Wall 3

[jessesolo]

Hey everyone, I am new to this forum, so far it seem great.

I am working on the design of several solid waste transfer stations currently. We have a "canned" push wall design at our office, but I am going to be stamping these drawings and want to check the suitability of the design.

Has anyone ever done the structural calculations of a push wall? Is there a text or guidance ducument that can help me proceed with the design?

I just am at a loss on how to estimate the loads, especially since I assume the most demanding will be the impact loads from the front end loader compacting the waste against the wall.

The design that I have has been constructed elsewhere, and it hasn't fallen over, but I want to do more.

Thanks,

Jesse

 

[JedClampett]

I would say, you'd have the lateral pressure of the material against the wall plus the loader compaction force. But the loader compaction force can't be any more than the weight of the loader times the frictional slip coefficient of the tires on concrete plus an impact factor. I'd take the loader weight times 1.5 distributed over the front profile of the scoop.

 

[DaveAtkins]

We use the breakout force of the loader's bucket, multiplied by an impact factor (I think we use 1.2). Product literature for these loaders almost always gives the breakout force (the ones I deal with--fairly large John Deere models--generally have a breakout force of about 20 kips). The breakout force is the force at which the hydraulics which control the bucket fail, and so the loader cannot push against the wall with any greater force. We apply this force to the top of the wall, and spread it along a length of wall.

DaveAtkins