Equation in book of Soil Mechanics in Engineering Practice" by Terzaghi & Peck (1958) ?

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Martin E. Baltazar-Lopez

Hi Abdelrahman Abuserriya , not that particular edition from 1958, there is the third edition somewhere...

https://geoerapg09.files.wordpress.com/2017/06/karl-terzaghi-ralph-b-peck-gholamreza-mesri-soil-mechanics-in-engineering-practice-wiley-interscience-1996.pdf

Hope this helps!

José Miguel Reichert

Here is a link to a public pdf of the 3rd edition:

Abdelrahman Abuserriya

thank all