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Posted by Tom Holloway on May 26, 2006, 1:54 pm
IBM5081 Wrote:
> I have used the following method successfully several times:
> Some of the devices mentioned are home-built.
>
> 1. Purchase 3-4 lag screws - 1/2" diameter, 12" long These will be
> screwed into the remaining post stub in the ground. An impact wrench
> (I
> use an electric model) will quickly install the screws. In a 4x4 post,
> 2 screws are about all that there is room for.
> 2. Rent/borrow/buy a pair of farm jacks. These are mechanical jacks
> that provide about 48" of lift. They are used in tandem and must be
> jacked up at the same rate.
> 3. Here's the home-built: A piece of 4"x4" square tubing, heavy wall,
> about 12" long.
> In the middle of the tubing, cut a window 6" long on one side. Once
> that window is cut, drill 2 holes 1/2" diameter on the opposite side.
> The holes must be about 2" apart. Each lag screw goes through a
> washer,
> then through the window and out the hole on the opposite side to screw
> into the broken post.
> The farm jacks are limited as to how low to the ground they can be
> used. They must be about 6-8" raised in order for the pump arm to
> cycle. In order to permit the jacks to lift the device, each end of
> the
> square tubing needs a loop extending upward on the same side as the
> window in the tube. I suppose that some chain could be used for the
> loop. My solution was to cut two lengths of #6 rebar, each about 24"
> long and bend them unto a U-shape. The legs of the U are about 4"
> apart. Each U-piece was then welded to the extreme end of the square
> tubing to form a handle.
> This whole apparatus works well when the residual post is not too
> rotten and there is a nominal amount of concrete on the post. Rotten
> posts will not hold the screws, resulting in pullout. Too much
> concrete
> and you will not be able to pump the jacks. The jacks are only rated
> at
> 7000 pounds, so if you cannot pump down, do not use a vehicle or more
> force...it will just damage the jack.
> If this approach does not work, go rent the 65# electric jackhammer
> and bust up a bit of driveway. Cost you about $50 for 4 hours.
Brilliant thank you. I shall give it a bash this weekend!
Tom
--
Tom Holloway
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