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 …

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 …

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 …

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, …

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 …

Jul 9, 2012 · In general, lateral subgrade reaction is 1.5 to 2 times the vertical subgrade reaction. To obtain lateral subgrade modulus, multiply the lateral subgrade reaction with pile or pier diameter or …

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 …

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 to the …

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 …