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Re: waterproofing a retaining wall...

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Would high strength achieve the objective?  Eventual cracking may
negate the effectiveness, so perhaps I've answered my own question. 
Negating cracks, could HS concrete be a solution?

Kieran KS


On Thu, 03 Mar 2005 16:09:04 -0800, chuck utzman <chuckuc(--nospam--at)pacbell.net> wrote:
>  Xypex is not a "surface sealer".  Although it is often surface applied, my
> preference is to use it as an admixture. If & when moisture enters the
> concrete through a crack, the material grows crystals that follow the
> moisture & plug the crack. I know Gail doesn't believe in it, but I've used
> it with great success.   
>  Chuck Utzman, P.E.
> 
>  Lutz, James wrote:
>  
>  Xypex does a good job of sealing a concrete surface, but I don't know that
> it is so great if you have future cracks to bridge. Something more flexible
> might be better. If the intent is to waterproof the lagging wall, then build
> a concrete wall interior to it, something like "Liquid Boot" or other
> membrane coatings might be more forgiving. -----Original Message----- From:
> Padmanabhan Rajendran [mailto:rakamaka(--nospam--at)yahoo.com] Sent: Thursday, March 03,
> 2005 1:56 PM To: seaint(--nospam--at)seaint.org Subject: RE: waterproofing a retaining
> wall... Good recommendation. I have used Xypex and it works well. It can be
> applied on concrete surface that is already set or it can be added when
> concrete is being mixed. Rajendran --- "Kestner, James W."
> <jkestner(--nospam--at)somervilleinc.com> wrote: 
>  Not sure what your details look like but you might try Xypex.
> http://www.xypex.com/ Jim K. -----Original Message----- From: Phil
> Rossington [mailto:phil(--nospam--at)rossingtonarchitecture.com] Sent: Thursday, March
> 03, 2005 1:27 PM To: seaint(--nospam--at)seaint.org Subject: waterproofing a retaining
> wall... I am designing a house on a steep hillside lot in San Francisco. It
> is a zero lot line condition, where this house and the neighboring houses
> have no side setbacks. The required cuts into our lot will require soldier
> piles and lagging. The structural engineer has designed a system where the
> lagging is on the property line and the soldier piles (wide flange columns)
> are in front of the lagging (typically the lagging is placed within the
> flanges of the piles). The soldier piles will have holes in them, to allow
> horizontal reinforcement to pass through them and these piles will be
> incased within the concrete. My question is waterproofing. Does anyone know
> of a way to waterproof a condition such as this? In a typical situation,
> where space is not an issue, the lagging will be placed within the flanges
> and will be placed against the front flange. This relatively flat plane will
> then be covered by the waterproofing membrane and the concrete wall will be
> poured / shot against this system. Any help is appreciated!
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