mikealpha88
Structural
- Jan 21, 2010
- 21
Hello Fellow Geotech Engineers!
I have an interesting question. I came across a project where the site has a 1.2m to 3m layer of uncontrolled fill. As part of earthworks, another 1.4m of fill is to be placed on top of the existing ground level to raise the pad height.
Now, removing the uncontrolled fill of 3m would be an extremely expensive process so the project Geotech engineer suggested leaving the uncontrolled fill as is, removing the soft spots, having a briding geofabric layer between the uncontrolled fill and new fill and then filling the site with controlled fill in 300mm layers.
With this, I am concerned about the long-term performance of the building. The building is going to be an industrial shed with concrete tilt panels. The panels are designed to be supported on strip footings assuming controlled fill.
Does anyone have an experience with a similar scenario where the existing uncontrolled fill is left and then a new fill is placed on top?
Thanks for you help.
I have an interesting question. I came across a project where the site has a 1.2m to 3m layer of uncontrolled fill. As part of earthworks, another 1.4m of fill is to be placed on top of the existing ground level to raise the pad height.
Now, removing the uncontrolled fill of 3m would be an extremely expensive process so the project Geotech engineer suggested leaving the uncontrolled fill as is, removing the soft spots, having a briding geofabric layer between the uncontrolled fill and new fill and then filling the site with controlled fill in 300mm layers.
With this, I am concerned about the long-term performance of the building. The building is going to be an industrial shed with concrete tilt panels. The panels are designed to be supported on strip footings assuming controlled fill.
Does anyone have an experience with a similar scenario where the existing uncontrolled fill is left and then a new fill is placed on top?
Thanks for you help.