Modulus of Elasticity of Different Soil Types

[MPHenry]

Can anyone give me a reference or web site where I can get some typical design values for the Modulus of Elasticity of Different Soil Types?

Regards

Mike B-)

 

[Qshake]

Lindeburg's Civil PE exam study guide is a great place to start. Lots of soil information without a lot of extraneous information.

 

[ishvaaag]

Look also

Foundation Analysis and Design
Joseph E. Bowles
Mc Graw Hill

Table 125

Not the values given in this and other tables are for (maybe too) safe strength engineering use; for probabilistic behaviour you better use far stiffer assumptions. This not only is remarked in the text, I have seen otherwise, and even more simply, if you don't do so, you will see the prediction of displacements, say, settlement, go wildly big lacking correspondence with what at least my eyes have seen.

 

[ishvaaag]

Sorry, teh book is

5th ed.

Table is 2-8 in p. 125

 

[JAE]

We've not used Modulus of Elasticity, but rather the Subgrade Soil Modulus, K30. I assume you're looking to model your soil supporting a structure with an elastic spring. The subgrade modulus, K30 is in lbs. per cubic inch (or more specifically lbs per square inch per inch of deflection).

A 30" diameter plate is applied to the soil and a load-deflection curve is generated that provides a kind of "E" for your soil. Values range from a low of around 50 pci (soft clays) to a high of around 550 pci (gravels). Normallly, most well compacted clays are in the 75 to 200 pci range.

I've got a chart copied out of a book that offers sugested ranges. Most soil textbooks should have a similar table or chart.