What is the criteria to select the range of normal stress in Direct shear test?

I did not not find the answer anywhere. Please help.

07 August 2019 7,208 3 View

Are there expressions for mobilized friction angle with depth?

I am trying to calculate the earth pressure with the variation of friction angle along the depth for actual variation of earth pressure with respect to soil-wall friction angle.

01 February 2019 1,831 2 View

I am trying to write a MATLAB code. The MATLAB results a warning "Warning: Explicit integral could not be found" and does not solve. Why?

The MATLAB code is written as follows: syms delm phim kpm nup...

10 November 2018 202 0 View

Why the maximum bending moment in loose sand is higher than in dense sand in case of cantilever sheet pile wall?

I am calculating the maximum bending moment in cantilever sheet pile wall with the method present in the book by B M Das. The maximum bending moment is less in dense sand than in loose sand. What...

02 March 2018 8,936 5 View

Does the OMC of soil change with the variation of Aspect Ratio of fiber?

I did some compaction tests with variations of PP fibers. As the aspect ratio decreased, the OMC increases. Is it possible, or should I repeat my tests?

10 November 2014 1,342 2 View

How are the book chapters published.

I have written a book chapter on "Liquefaction of soil". Please suggest anyone who is writing a book or any publisher that can publish. Thank you

09 October 2014 8,554 1 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Are there packages (R or Python) for simple models (bucket?) to assess soil water content?

Hi everyone. I am researching droguht effects on soil water drought. I am looking for already implemented functions in R or Python to estimate soil water content from precipitation,...

21 February 2021 2,084 1 View

Which type of loading is to be used in dynamic analysis of Machien foundation?

Hello Everyone, Hope you all are doing well. I'm trying to simulate a machine foundation in ABAQUS with a geo-cell reinforced soil bed. Im totally confused to which type of loading would be...

21 February 2021 4,388 3 View

Measurement of water retention in organic substrates without a pressure plate?

Hello, I'm trying to measure the physical and hydrological properties of organic substrate media. Currently, I'm referring The book Soil sampling and Methods of Analysis by Carter and Gregorich....

09 February 2021 3,233 8 View

What will happen (quality or quantity wise) if we transplant 'Aerobic Rice' in puddled condition?

I want to know about the consequences of aerobic rice (both quality and quantity-wise) when transplanted or sown in puddled condition?

08 February 2021 2,343 6 View

Do there exist stand-alone permanently in-ground soil-moisture sensors with an installed GSM module, for outdoor use?

Am searching for a stand-alone permanently in-ground soil-moisture sensor with an installed GSM module, for outdoor use. The idea is for the sensor to send a moisture reading via a cellphone text...

04 February 2021 2,047 4 View

How do microbes tell the presence of an inorganic minaral in the soil?

Due to their ubiquitous nature, there is a tendency of the presence of microbes in a given mineral(s). For instance, if microorganisms that love the of pH less than 6 in the pH value, is isolated...

03 February 2021 4,630 10 View

What is the maximum storage time for samples used in soil enzyme assays?

01 February 2021 4,616 3 View

From where can I get details of following terms - Typic Fluvaquents, Aeric and Typic Epiaquepts?

I Have got a soil map in which following terms are given - Vertic Ustochrepts, Typic Ustochrepts,Typic Fluvaquents, Aeric and Typic Epiaquepts, Aquic and Typic Ustipsamments, Typic Ustorthents....

26 January 2021 8,412 5 View

What is the magnitude of yearly rhizopdeposition in tropical forests?

Hi all, I am trying to find reference values on annual soil rhizodeposition rates for different kinds of forests, with a particular interest for tropical rainforests. Do we have an idea of the...

26 January 2021 4,278 4 View