Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
(OP)
Pals
I am going to have to put a structure on a thick compacted fill, because the geotech says 4m(12ft) of soil layer must be removed(poor vegetation layer) and then structure be set up. So we will fill up 3m(9ft) and then let the structure rest 1m(3ft) below ground level
I have done this with single footings before, specifying gravel fills, sometimes concrete fills, at 95percent proctor.
But this time I am going to put a huge structure on top.
I am going to specify a 1m (3ft) thick raft on a large area, and specify a good fill and compaction.
Any problems you expect? Consider thick raft and a large area?
respects
I am going to have to put a structure on a thick compacted fill, because the geotech says 4m(12ft) of soil layer must be removed(poor vegetation layer) and then structure be set up. So we will fill up 3m(9ft) and then let the structure rest 1m(3ft) below ground level
I have done this with single footings before, specifying gravel fills, sometimes concrete fills, at 95percent proctor.
But this time I am going to put a huge structure on top.
I am going to specify a 1m (3ft) thick raft on a large area, and specify a good fill and compaction.
Any problems you expect? Consider thick raft and a large area?
respects





RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
Below that is good soil, dense and sandy, with bearing capacity higher than I need.
Problem is, the area used to be agricultural before.
respects
IJR
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
www.isddc.dot.gov/OLPFiles/FHWA/009760.pdf
About bridge abutments on compacted fill.
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
something is wrong with the adress you gave me. What to recheck and give me the correct one?
respects
IJR
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
The correct address is:
http://isddc.dot.gov/OLPFiles/FHWA/009760.pdf
The publication is Number FHWA-RD-81-184
"Performance of Highway Bridge Abutments Supported By Spread Footings on Compacted Fill"
All FHWA geotech publications can be found here:
www.fh
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
IJR,
Since the compacted fill will proably stiffer than the underlying soils, Make the pad legth and width of the pad the length or width of the Strucure, plus at least three times the depth of the strucure. This will allow the fill to distribute the load to the lower soils and lower the net contact stress on the soil layer.
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?
What do you exactly mean by three times the depth of the structure?, you mean 3times the depth of foundation?
Anyway, I have a really large and thick mat(raft) foundation, and yes, my rule of thumb is to extend the raft 1.5xthickness from the column line.
But let us hear from you more clearly
RE: Foundation on a 3meter(9ft) thick Compacted Fill, Problems?