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Rail car loading

Rail car loading

Rail car loading

(OP)
I have a slab on grade with a freight railroad running over it.  The rails are going to be attached to the slab.  I have no idea what types of load the rails will impart to the slab.  I'd like to make sure my slab doesn't crack to pieces.  The slab is for a loading platform, so I don't really need to worry about high speed trains running over it.

Has anyone ever run into a situation like this?  Are there any good online references (I don't feel like buying another book).  Ideally what I'd like is a strip load that I can pop into a mat slab program or into some slab on grade charts.  I'm in an IBC 2003 location.  Thanks.

RE: Rail car loading

i think you should get back to the owner and ask for extra info about the maximum loading and weights,,it's not a railway bridge to take the loads from the standards,it's like a crane load, get back to the manefacturer or the owner

RE: Rail car loading

+$100.00 for a new book seems like a very small investment to help assure a proper and safe design.  You might even learn something from the new book.

RE: Rail car loading

flyby911, the OP did state "freight railroad" loading.  

That is much more significant that a crane.  The E-80 loading would be applicable...perhaps no impact factor though if the speed is slow.

RE: Rail car loading

JAE , yes you'r right..

i think also he needs a design approach also for the slab on grade,

when i designed slab on grades i used to make shell elements in the sap2000 rested on springs in every joint with a stiffness equals to coeff of subgrade reaction of the soil multiplied by the area it's supporting

but in that case i would need in addition to check bearing stress of the strip load of one rail on the RC slab

RE: Rail car loading

(OP)
Thanks for the replies.  I think the E-80 loading is about what I was looking for.  I'm going to place the loading into a simple finite elements program for slabs on elastic supports.  

RE: Rail car loading

Don't forget that the rails (and ties, if any) help distribute the E-80 wheel loads over a larger slab area.

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