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qc value to SPT N60 value

qc value to SPT N60 value

qc value to SPT N60 value

(OP)
Can you please help me out with this problem. This is my first term in geotech eng.

A cone penetration test on a sandy soil with mean particle size of .5 mm produced a qc of 80kg/cm^2. Estimate the equivalent SPT N60-value.

I understand how to calculate a SPT N60 value, but I don't know the ratio between the N60 and the qc value of a CPT. I have looked all through my textbook and there are no example problems, nor do they explain the ratio.

Please help.

Thank you

RE: qc value to SPT N60 value

Look up Schmertman's relationships

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