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Posted by Italian on August 25, 2006, 4:46 pm
I would suggest forgetting about the old posts and footings for now.
Pour new ones next to the old ones at proper depth (dig with 2 man
auger, very portable) after these have been in place say for 2 weeks
place the jacks on these new pads and re-level the entire building its
not that big. Any other way is going to allow the problem to continue
if you do not get below the frost line you will have heaving there are
no if ands or buts about it.
> My problem is how to safely support the jacks at a three foot hight.
If you do one at a time you do not have to worry about it going
anywhere.
I've seen house movers using what looks like railway ties to
> build cribs to do this but i can't find any DIY info on this method.
these cribs are used after the house is lifted the house rests n them
while the new foundation or walls are being erected. If Im
understanding correctly your saying there is no stable ground on which
to rest these oncorrect ? which is anoter reason why you must pour new
footings first.
> Sorry for the long post but I'm trying to do this job right for once
there is only one way to do it right and not have to do it again....you
must get below the frost line......
Frank D wrote:
> I currently have a 30 yr old seasonal two story log cottage sitting on cedar
> posts which are either sitting on bedrock about 2 feet below ground or
> buried in
> soft ground at varying depths according to slope of bedrock. I do not have
> access to heavy equipment as I am secluded. The land slope is about 10
> percent. My problem is that the frost has been heaving the posts at the rear
> of the cottage which is now 5 inches higher than the front. I tried putting
> in cement blocks filled with concrete and putting them as deep
> as I could but they are heaving too. The construction is simple 6 inch
> cedar logs nailed vertically on post and beams. The 2 story cottage
> measures 25 X 32 feet. The slope of the bedrock( which is a few feet below
> ground level at some support points) can be at 30-40 percent. My next plan
> is to just get the cottage level and use new cedar posts. I need to lift the
> sagging sections and put in new cedar posts. For this I want to use three
> 20ton bottle jacks to straighten the main beams which are double 2 X 12.
>
> My problem is how to safely support the jacks at a three foot hight. The
> ground is sandy with clay underneath. Can I just use cottage pads on the
> ground and put solid concrete blocks to fill the gap. So one support would
> be a 18 X 18 X 3 inch reinforced pad on the ground with maybe crushed stone
> to level. then several 3 x 6 x 8 solid concrete blocks stacked together and
> finaly the bottle jack and a 3/8 steel plate secured to the jack and the
> beam. In my area there is available either a 20 X 20 X 4 inch 7000lb per
> square inch cottage pad or a 18 X 18 X 3 inch steel reinforced. I would
> prefer the reinforced one because its only 75 lbs and easier to stack and
> move around. I don't know what the load capacity of the 3 in is and I dont
> know how much of a load I will actually be putting on it. There are so many
> variables. I've seen house movers using what looks like railway ties to
> build cribs to do this but i can't find any DIY info on this method. Has
> anyone had similar challenges that can give me some pointers. How far
> apart to place the jacks? How to keep the whole lifting assembly dead level
> while it is being pushed into the ground?
>
> Sorry for the long post but I'm trying to do this job right for once and not
> kill myself in the process. I heard that if the jack is not dead level it
> could slip out and....well my wife would be rich ;-)
>
>
> Frank
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