Mar 16, 2005 · Can anyone suggest ways of accurately estimating the Modulus of Subgrade Reaction for a soil. Available parameters: SPT N values, Moisture, Unconfined Compressive …

Mar 28, 2012 · Hello, I am working on the geotechnical investigation for a 25 story tower project. After computing the stimated elastic settlements (using sigma - W) (project is located on a …

May 20, 2001 · where: Ks = modulus of subgrade reaction in kN/m^3 qall = allowable bearing pressure in kPa these equations consider a factor of safety of 3 and a maximum settlement of …

Apr 14, 2016 · The modulus of subgrade reaction is a basis for structural engineers to evaluate deformation from point loads that may or may not be applied to the slab. Say, you know a …

Sep 18, 2023 · Even mat foundations can be designed without subgrade modulus. Just to be clear, I know subgrade modulus is still used for pavement and sometimes slab-on-grade …

May 4, 2008 · I have a question about how the subgrade modulus relates to the assumed spring stiffness of a soil. I have a rather large mat foundation to design (using a beam on elastic …

Oct 3, 2022 · It appears you desire a value for the modulus of subgrade reaction (k), but are starting with a conversion from CBR to “subgrade surface modulus”, which is not the same as …

Apr 2, 2011 · Maybe this trend is localized to the area in which I practice. But EVERYTIME a geotechnical engineer recommends a stiffness value for designing a soil supported mat or …

Apr 13, 2017 · To me, this means there IS some relationship between allowable bearing pressure and subgrade modulus. Geotechnical engineers typically limit the allowable bearing pressure …

Jun 30, 2000 · Proof Rolling always requires 'local calibration' and several 'knowns'. The location of the water table will determine whether large amounts of subgrade rolling (pumping) are due …