Shallow vs. Deep Foundation Cost Comparison

[JKJohn]

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?

 

[VoyageofDiscovery]

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

 

[JKJohn]

Where to get the local cost data?

 

[BigH]

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.

 

[paddingtongreen]

Do two sample designs and use Means.

http://rsmeans.reedconstructiondata.com/

Michael.
Timing has a lot to do with the outcome of a rain dance.

 

[hokie66]

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.

 

[tsaldana]

what hokie66 said, sounds to be a Geopeir. Check them out on

http://WWW.Geopiers.com.

I have never used this product, but sound like it may be an answer for your situation.