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RE: SLAB - Control Joints in Concrete Slab on Grade

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I believe that the use of Fibermesh for "Flatwork" will help maintain a high
quality finish. Flatwork is placed in smaller area's, usually with
sufficient expansion joints (such as in walkways)so that you don't have to
worry about finish cracking. However, the Fibermesh won't do a thing to
control cracking from other things such as tree roots.
Just check the product info out carefully before thinking of it as a wonder
Dennis Wish PE

-----Original Message-----
From: Phil Dodd [mailto:phildodd(--nospam--at)]
Sent: Monday, April 27, 1998 8:59 AM
To: seaoc(--nospam--at)
Subject: Re: SLAB - Control Joints in Concrete Slab on Grade

Is it appropriate to use fiber mesh (I am assuming that this material is
the short, chopped glass admixture which I have seen) in walkways?  In
the installations which I have seen, ends of the chopped glass fibers
are exposed on the surface, detracting from the appearance, catching
debris, etc.

Richard Lewis wrote:
> seaoc(--nospam--at),Internet writes:
> Time for a dumb question.
> So why use Fibermesh if it cannot/should not be used as a replacement for
> WWF?
> Regards,
> Bill Allen
> My opinion is to use Fibermesh type material in exterior type exposures
> it would be detrimental to have corroded WWF.  This might be exterior
> loaded paving, walks and topping material.  I would space the joints at
> the same spacing as unreinforced concrete, using the Fibermesh as extra
> security.  I assume it is only of value for the first few days to help
> control shrinkage cracks.  After that it is worthless.  The other place I
> have used it is to replace WWF on 3" concrete decks poured on bar joists.
> The WWF usually is a pain and never gets placed right anyway.
> __________________________________________________
> Richard Lewis, P.E.
> Missionary TECH Team
> rlewis(--nospam--at)
> The service mission like-minded Christian organizations
> may turn to for technical assistance and know-how.