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 Strength & Angle …

Jul 28, 2005 · For slabs on grade, the modulus of vertical subgrade reaction needs to be decreased for increasing slab dimensions. Even though the basic theory is the same, slabs on grade and laterally …

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 racking …

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 weathered …

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 k, and has different …

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 1 inch, which is …

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 designs. However, …

Mar 2, 2005 · Is the Soil Spring Constant the same as Modulus of Subgrade reacton? I argued with a collegue that it is not. Please tell me I am right! Can anyone give me references where I can get …

May 7, 2002 · I need to know if there is a correlation, a formula or any method to determine the modulus of subgrade reaction using the DCP index or CBR values. I want to evaluate de CBR and modulus of …

Aug 17, 2010 · We are constructing a 10" gravel roadway over existing surface. No cutting of existing ground will occur. Is it normal to run a roller over the existing ground and get our 95% compaction …