Settlement Calculations - Concept
Settlement Calculations - Concept
(OP)
Possibly an elementary question, but here goes.
I'm looking at calculating settlements in normally consolidated clays under a preload. I'm following Geotechnical Engineering by Cuduto, which uses a logarithmic formula which takes into account initial and final effective stresses within each soil layer. For final effective stresses, the loading from the preload is simply added to the initial effective stress, no matter what the depth is.
Why is it that Boussinesq's curves are not applied to reduce the load, from the preload, at deeper soil layers; thereby, reducing the final effective stress?
Thanks in advance!
I'm looking at calculating settlements in normally consolidated clays under a preload. I'm following Geotechnical Engineering by Cuduto, which uses a logarithmic formula which takes into account initial and final effective stresses within each soil layer. For final effective stresses, the loading from the preload is simply added to the initial effective stress, no matter what the depth is.
Why is it that Boussinesq's curves are not applied to reduce the load, from the preload, at deeper soil layers; thereby, reducing the final effective stress?
Thanks in advance!





RE: Settlement Calculations - Concept
The goal of most preloads is to remove the potential settlement from a site prior to building a settlement senitive structure, so you are just trying to load the soil to a depth that will be influenced by the new structure.
RE: Settlement Calculations - Concept
These are interesting problems to solve!
f-d
¡papá gordo ain't no madre flaca!
RE: Settlement Calculations - Concept
Settlement calculations would normally not be calculated for the entire layer of the soil down to the zero bulb but to a percentage of P (P being increase in pressure due to preload) and the result would have been acceptable.