Dec 29, 2003 · Hello, I'm a geotech engineer. From my side of the ground surface, the subgrade modulus, k, also known as modulus of subgrade reaction, is not used anymore for designing …

Feb 21, 2024 · 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 …

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 …

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 …

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 …

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 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 …

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 foundation) …

May 12, 2003 · Compacting the upper 12" of the footing subgrade goes a long way toward helping to reduce settlement in more ways than simply "repairing" the subgrade due to construction …

Oct 26, 2019 · For the second expression, I think he wanted to relate the vertical modulus of subgrade reaction, K v, as "p v = K v X z". Both K h and K v are related to the soil in interest, and should be …