Steel Piers vs Concrete Piers

8,954 Views | 3 Replies | Last: 8 yr ago by Streetfighter 02
Streetfighter 02
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I have a weird situation that was part of original construction of my home. In the master bedroom there is a ~4' x 15' section of slab that was clearly installed separate of the rest of the house. The walls were also framed separately from the main portion of the room. This room matches the architect drawings as it currently sits. My feeling is there was a mistake in orginal construction and this was the quick repair to keep the project on track.

I've had a foundation repair company come out to bid piers to stablize this small section of slab and prevent the room from sagging at the end. My question is what are pros and cons of each type of pier. The contractor is recommending steel piers for longevity and superior function. His quote is $650/pier for steel and $475/pier for concrete. He says steel piers have been more effective in my neighborhood over his career. It's not a huge project alone but this is setting up for me replacing windows and doing a large landscape project. When rolled into the total cost it can make a difference to move $1,000 from one part to another.
AnchorFoundation
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http://anchorfoundationrepair.net/the-anchor-advantage/

This depicts difference between drilled bell bottom piers and pressed concrete piles. I know it's not exactly what you were looking for, but if you need additional info sheets with pros and cons of various repair techniques, please let me know and I can send them your way
Whoop Delecto
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Copp
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Anchor,

I have a question. You hear the concrete pressed pier guys talk up their system because they claim they can reach greater depths by pressing and get to a more solid footing.

Drilled piers can typically be drilled to what 9-12ft deep? Is that not a concern? I know some concrete pressed can get down past 20ft. Thanks!
Streetfighter 02
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Thanks for the link. I don't believe what they plan to install will be either of those systems. He said they use reclaimed oilfiled tubing so my guess is 2-3/8" or 2-7/8" steel tubing filled with cement and possibly circulated outside. I guess I need to ask more questions.

On the soil it's got a high clay content but I haven't done any testing. The side of my house is probably 25-30' from a 5.5' retaining wall. The lot slopes and everything on it is going to want to slip down that slope. I don't know what piers are installed if any. The slab is 60 years old and has welded wire instead of rebar. My feeling is there is no right answer only the answer that is least wrong.
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