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Re: Timber retaining wall (railroad tie)

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Brian, I built a small series of railroad tie walls in my back yard for my wife's flower beds-height of 12-18". That was in 1976 and now they are falling apart due to rotting, so expect 30 years life at most for your wall. Of course, our winters may make the situation worse.
Gary

Brian wrote:
Thanks everyone for your responses!

I see by reading what I could find on the internet,
that this system is not durable.  In fact, most of the
articles are about removing this system due to
rotting, failing or warping of the timber.  However,
the architect wants this type of system for some
reason.  I've already advised him on the life span of
this system and tried to move him towards a keystone
or stacked masonry system. So far...no budging. Hopefully, the more I press, the more he'll be apt to
change his mind.

Thanks again!

--- David Fisher <dfisher(--nospam--at)fpse.com> wrote:

Brian:

Mr. Feather, as usual, is correct.


The RR tie walls with rebar anchors never hold up
over time.


David L. Fisher SE PE
Senior Director

Cape Cod Grand Cayman Holdings Ltd. - Cayman
Fisher+Partners Structural Engineers Ltd. - Cayman
372 West Ontario Chicago 60610
75 Fort Street Georgetown Grand Cayman BWI
319 A Street Boston 02210


312.573.1701
312.573.1726 facsimile
312.622.0409 mobile

www.ccgch.com
www.fpse.com






-----Original Message-----
From: Paul Feather
[mailto:PFeather(--nospam--at)se-solutions.net] Sent: Tuesday, August 29, 2006 2:23 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: Timber retaining wall (railroad tie)

The proper approach is soldier pile and lagging. Use WT section and set
the ties behind the flanges, then pin the ties with
rebar at two third
points.  Will last a long time this way, and
dead-men are not required.


Paul Feather PE, SE
pfeather(--nospam--at)SE-Solutions.net
www.SE-Solutions.net
-----Original Message-----
From: Brian [mailto:bsh117(--nospam--at)yahoo.com] Sent: Tuesday, August 29, 2006 12:11 PM
To: seaint(--nospam--at)seaint.org
Subject: Timber retaining wall (railroad tie)

Hi all!

I've been asked by my boss to design a railroad tie
retaining wall, however, I can't find much
information
on how to actually design this system.  I understand
that you connect the ties together with long spikes
or
rebar and you place deadmen occassionally into the
retained soil.  However, I can't find any actual
design information.  I would appreciate any input
that
you may have.

Thanks!

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