Civil engineer? Great! Take a guess at what his price was.
----Original Message Follows----
From: "Timothy H. Collins" <thcollin@mtu.edu>
To: "Robert Duquette" <robertduquette@sympatico.ca>,spridgets@autox.team.net
Subject: Re: [Spridgets] concrete question
Date: Wed, 15 Oct 2008 11:13:43 -0400
Robert,
Putting my Civil Engineer's hat on. . .Putting a new layer of concrete over
the old is not a good idea for your situation. The new will never bond 100%
to the old so water (which it appears you have in abundance) will penetrate
between layers. This will cause problems with chemical reactions and with
freeze thaw. I'd bet the perimeter of your garage floor freezes occasionally
which will destroy the new layer. I don't know what type of aggregates you
have in Canada, but alkaline reactivity is an example of "chemical
reaction." If your concrete has pop outs with a tan color aggregate in the
bottom of each hole, you probably have this situation. In most locals in the
US, there are laws that say; "thou shalt not flood thy neighbors land."
Seems like the public road is contributing to your lake problem. Enlist the
help of your CA government - ask for a "bail out" (pun intended). We're
doing bail outs here in a big way! Get rid of the water for lotsa reasons.
Price: Portland Cement, an ingredient in concrete, is an energy intensive
material to produce and transport so expect to pay more each day you wait to
do the project.
At 10:43 AM 10/15/2008, Robert Duquette wrote:
>Who would like to venture a guess at what having a concrete floor poured
>would cost?
>
>My floor is crumbly and about 2.5 inches too low compared to the driveway,
>at the lowest point.
>
>I figured, that someone would rough it up to remove the loosest parts, and
>then pour over it. The guy who came to give me an estimate last night was
>actually recommending raising the driveway as well to help with my problem.
>So, he was recommending cutting out the old concrete, adding a base and
>then pouring 4 inches of concrete. I'm told that it's roughly 580 square
>feet.
>( But, I think it is roughly 21 x 23. ) I wasn't impressed with his
>decision to tell me what needed to be done instead of quoting on what I
>wanted done and the price just floored me. ( pun intended )
Tim Collins
http://www.flickr.com/photos/12702006@N07/
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