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Hey friends, why don't you check these references. ASTM D 4254-91, Annual book of ASTM standards. USA: ASTM VOl:04.08 (1999), p. 518 ASTM D 4253-93, Annual book of ASTM standards. USA: ASTM Vol:04.08 (1999), p. 505 Eris Uygar

You can also use the same method in drained tests, provided that you have precise measurements of volume change during in both consolidation and shearing stages. Konwing the actual volume and the axial deformation you can equate and solve for the diameter and calculate the lateral strain. But...

We have conducted permeability tests on high volume fly ash specimens in triaxial by applying constant head at the top of the specimen by a back pressure system and we measured the volume of permeated water coming out of the sample at the bottom. In some specimens we couldn't observe water...

the water content estimated in the field may be wrong, if the insitu soil samples contained gravel. This is because, most of the naturally occuring gravels with different mineral origins have very little absorption capacity (about 1-5 % at most, and you can achieve this only if you boil them in...

I agree, laboratory standard proctor test says that there should not be any particles retained at a No.4 sieve (according to ASTM standard sieve sizes). Therefore, to apply the procedure correctly in the laboratory they might sieved the material before applying compaction trials in several water...

Hi ChrisMcLean, thank you very much for the detailed information. Can you give me reference to a written document on this subject. I will be so glad having such an information. Eris Uygar

Hi, ChrisMcLean, can you please give us more information about what you've told in this thread. I see that you pointed out an interesting detail. Hope to see your reply on this matter. Note: It would be great if you can give us some references so that we can find something to read also. Eris...

Of course, these equations are giving gross values. And if you're using a factor of safety you'll be calculating allowable values. To calculate net values, yes you're right, you have to subtract the weight of the footing plus the surcharge weight of the soil over the footing. Usually in shallow...

Do you mean a circular mat or plate by saying 'circular foundation' ? How large is your foundation ? I know that for industrial process tower bases and for chimneys this type of foundations are used commonly. You can find some closed-form solutions for such systems which are based on the...

I think you all missed the point. One important point of this thread was that a correlation between mackintosh hand driving probe vs SPT and CPT is asked. So, I think we should stop to argue the known things about SPT and CPT and get back to solve what is asked. Is there anyone who can suggest a...

I've tried ANSYS educational edition 5.3 when I was doing my master degree in a two dimensional road pavement model having a geosynthetics layer. Our aim was to see if a geosynthetics layer is going to reduce the settlement of overlying layers. Now we have the latest version of it (release 7.0)...

I should say that BigH is quite right. But beyond that I think it should not be the way to estimate any cohesive soil parameter using SPT data. Because SPT test gives very erroneous results especially if we are going to think that the soil is saturated (since BigH considered consolidation...

Sorry, I don't think that there is any kind of such a direct relationship, but I can suggest a correction factor for your SPT dat, Cn=9.78(1/vertical effective stress in kN/m2) then Nc=Cn*N reference: Liao & Whitman (1986) Usually Plate Load test data is used with which the foundation...