[TheForge] Fw: setting fence posts

[Dan Brewer]

All concrete reaches 1/2 of its strength in 30 days.  After that it
continues to get harder.  So if it was mixed correctly in 1920 It would be
really hard.  Also being rammed as a damp mix ,most of the air would have
been driven out by compacting.  But for us mere mortals the correct amount
of water added to the mix will make a stronger application.  It will also be
easey t  to set the post in place.  About 12 hours after the post has been
set you can hang wire on it.

Dan in Auburn

On Sun, May 24, 2009 at 5:35 PM, David E. Smucker
<davesmucker at hotmail.com>wrote:

> Dan, I don't agree, not throwing stones here just concrete.  For the
> highest
> strength concrete you want a very "dry" mix, problem is that this isn't
> easy
> to place.  There is a lot of data out there on this -- not just my word.
> But from my experience the worst foundation I every had to remove was one
> that was placed in about 1920 using what they called dry pack at the time.
> They made a very very dry mix and placed it by impact hammering it into the
> forms.  It was hell to remove, and didn't even have rebar in it.   We were
> inside a mill building and didn't really want to blast.
>
> In the case of the posts by using the mix completely dry you get a slow
> hydration of the cement -- from the moisture in the ground, makes a very
> strong concrete -- it just that it takes some time.
>
> No question if you a going to do lots of these the a commercial mix and
> pumper is the way to go.
>
> Dave
>
> --------------------------------------------------
> From: "Dan Brewer" <danqualman at gmail.com>
> Sent: Sunday, May 24, 2009 3:11 PM
> To: "terry l. ridder" <terrylr at blauedonau.com>; "Blacksmithing List
> Sponsored by ABANA" <theforge at mailman.qth.net>
> Subject: Re: [TheForge] setting fence posts
>
> > Just stetting the bag in the hole without mixing gives mass to the post
> > but
> > if you mix the bag with water the result will be a stronger mix.  One 80
> > lb
> > bag per pole.  Use a line to keep the fence stright.
> > Dan in Auburn
> >
> > On Sun, May 24, 2009 at 5:26 AM, terry l. ridder
> > <terrylr at blauedonau.com>wrote:
> >
> >> hello;
> >>
> >> i have received my county permit to build my fence. i am looking at the
> >> various cement mixtures offered by quikcrete and others and do not get a
> >> good feel for just how many 40/80 lbs bags would be needed per fence
> >> post. i am using a 3-pt hitch post hole digger with a 9inch auger. the
> >> fence posts are 2 inch galvanized pipe. basically each hole is roughly
> >> 1.76 cubic feet. the pipe does take up some space but it is small
> >> compared to the hole. the fence is 400 ft long with a fence post every 8
> >> ft. roughly 50 fence post. so roughly 1.78 cubic feet x 50 gives 88
> >> cubic feet of cement is needed. what is the least expensive why to make
> >> up the necessary cement mixture for setting fence posts?
> >>
> >>
> >>
> >> --
> >> terry l. ridder ><>
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