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RR Tie retaining walls

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HI All:

I have an interesting problem.

A client wants to put in a wall consisting of Rail Road Ties spanning
between columns. The columns will probably be fat telephone poles. The RR
ties will of course be pressure-treated.

This particular developer did this a decade or so ago, and got it OK'd by
the City (Thousand Oaks). I took a photo of the existing wall and it looks
really nice, and appears to have held up quite well. Of course the Code has
changed a few times since then.


1. Does anyone know how easy it would be to get RR ties and telephone
2. Does anyone have any ideas on what allowable stresses would befor RR
ties? I would probably assume stresses for redwood if I couldn't get any

Thanks for any input

Kate O'Brien, P.E.
Simi Valley, CA