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Shallow vs. Deep Foundation Cost Comparison

Shallow vs. Deep Foundation Cost Comparison

Shallow vs. Deep Foundation Cost Comparison

(OP)
The Geotechnical report requires the removal of the man fill layer to access a suitable soil. This layer is 8 feet deep.
The site is about 185x130 feet.
The shallow foundation design requires about 50 single footers.
We were asked to provide a cost comparison between deep foundation and shallow foundation. The owner was told that the cost of removing the man fill soil and replacing it with suitable material would be around $1M.

Any ideas?

RE: Shallow vs. Deep Foundation Cost Comparison

Do two preliminary designs and compare. Pretty straight forward as long as you have local cost data.

RE: Shallow vs. Deep Foundation Cost Comparison

(OP)
Where to get the local cost data?

RE: Shallow vs. Deep Foundation Cost Comparison

I have, in the past, found that local contractor's estimating staff are pretty happy to provide "reasonable" estimated costs - so long as they have a chance to be considered for the work.

RE: Shallow vs. Deep Foundation Cost Comparison

Another option may be to just remove and replace the fill at the footing locations. I have on a few occasions found that to be economical, but it would depend on a number of factors to do with your particular building.

RE: Shallow vs. Deep Foundation Cost Comparison

what hokie66 said, sounds to be a Geopeir. Check them out on WWW.Geopiers.com. I have never used this product, but sound like it may be an answer for your situation.

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