Hi,
Thanks for all the replies. I actually found by searching on this site where Geotechnical Engineers where discussing using clear stone under footings for bridges and other large stuctures where dranage was an issue. I can't remember where I found it.
I talked with two Geotechnical...
When you say it would develope sink holes, do you mean in the clear stone or would the water flow through the clear stone and start eroding the silt ground that the clear stone is sitting on. I don't understand how sink holes could ever form in the clear stone directly under the footing??
Hi,
I am building a 30' X 40' foot addition. I had to excavate the footing in a step since the land was sloping away from the original house and I had to get rid of the top soil etc. I basically dug out all deposits of clay, top soil and other questionable material until I reaches a hard...
