Direct Shear Test Calculations | English | Geotech with Naqeeb

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КОМЕНТАРІ • 94

  • @afnanahmad3376
    @afnanahmad3376 4 роки тому +1

    It's quite helpful.
    Thanks for sharing...

  • @user-uv9fz5rw4z
    @user-uv9fz5rw4z Рік тому +1

    Great demonstration. Thanks.

  • @diluweerasinha1250
    @diluweerasinha1250 11 місяців тому

    thank you so much, sir. It's quite helpful.

  • @adeelawan53771
    @adeelawan53771 3 роки тому

    Very informative videoo sir.

  • @sarmadkhan5140
    @sarmadkhan5140 4 роки тому

    Excellent demonstration

  • @aneesurrehman3422
    @aneesurrehman3422 4 роки тому +1

    Really helpful sir

  • @geosolid639
    @geosolid639 4 роки тому

    informative. thanks.

  • @munavarshaikh5224
    @munavarshaikh5224 3 роки тому

    Nice vedio, by d way can we fix cohesion value automatically.

  • @asrajo5728
    @asrajo5728 2 роки тому

    Thanks for sharing sir

  • @noface6970
    @noface6970 3 роки тому

    you are a legend sir

  • @Mentos069
    @Mentos069 2 роки тому +3

    Hi which one would be vertical and horizontal displacement?

  • @AnupamPande-sk8bi
    @AnupamPande-sk8bi 5 місяців тому

    Hello! Amazing video. Can you please share the XL Sheet?

  • @Tehbundarsarimurni
    @Tehbundarsarimurni 3 роки тому

    it was helpful me. thank you

  • @sreenathijk2952
    @sreenathijk2952 2 роки тому +1

    In some cases load reading multiply with constant & 5
    Can you explain it?

  • @tom2381
    @tom2381 Рік тому

    thanks a lot

  • @Abod-dz9vr
    @Abod-dz9vr 3 роки тому

    thank you

  • @civilacademia3831
    @civilacademia3831 3 роки тому

    Hello Naqeeb i have got a data in which there is strain as well along with the normal and shear load. How to consider strain in the test?

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  3 роки тому

      then both normal and shear failure stress will be used. in this case divide normal load corrected area and find the new normall stress against failure point of shear stress.... now in this case graph of shear stress vs normal stress corrected one will be used

  • @mye-mail3098
    @mye-mail3098 Рік тому

    Thanks

  • @chiekhoundiaye5975
    @chiekhoundiaye5975 4 роки тому

    I think that your normal stresses must be adapted whit the displacement. At rigour studies the impacted zone is the corrected surface !!!

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  4 роки тому

      can you elaborate plz...are u saying about use of corrected area??

    • @cheikhoundiaye5556
      @cheikhoundiaye5556 4 роки тому

      Yes about corrected area ! Un your curve we have to use the stresses at faillure (normal stress at the moment of faillure too). This is calculated whit the corrected area

    • @naqeebnawaz904
      @naqeebnawaz904 4 роки тому +1

      @@cheikhoundiaye5556 your point is valid but we can take corrected area when we have equipment with vertical displacement..usually direct shear test apparatus dont have vertical displacement.thats why..and ofcourse it will be failure shear stress vs normal stress..also we make we make a failure envelop considering linear trend so c and phi are already somehow have conservative values..due to all these we have to perform triaxial

    • @cheikhoundiaye5556
      @cheikhoundiaye5556 4 роки тому

      No, its not imposed to get vertical displacement ! The corrected area is the same. So the normal stres is calculated for a ratio between the initial normal force considered and the corrected area

    • @naqeebnawaz904
      @naqeebnawaz904 4 роки тому +1

      @@cheikhoundiaye5556 in my opinion we must have vertical displacement as well..but i consider your point...and secondly tbere is no area correction recommendatio n ASTM D3080-04 thats why i didnt include this point..but i have included this point in triaxial test video

  • @munavarshaikh5224
    @munavarshaikh5224 4 роки тому

    Could you recommend some laboratory testing vedio to see preparing sample and test conducted?

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  4 роки тому +2

      Aftet lockdown I will be uploading detailed videos of sample preparations, practical performance etc and the technical demonstration videos as per ASTM and domestic practices. There many youtube channel but i don't know a specific channel.

    • @munavarshaikh5224
      @munavarshaikh5224 4 роки тому +1

      @@GeotechwithNaqeeb thanks for the response.

  • @gbengaakinlade9286
    @gbengaakinlade9286 2 роки тому

    What does it mean if the cohesion intercept (y intercept) is negative?

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  2 роки тому

      it cant be negatv.... then you need to repeat the test

  • @Jer-Lex0818
    @Jer-Lex0818 2 роки тому +1

    Thanks very helpful but can you send me a Geotech worksheet and excel files?
    and i have questions? where the shear force came from? is it from Proving ring?
    and the Displacement? is it horizontal displacement or vertical displacement?

    • @Jer-Lex0818
      @Jer-Lex0818 2 роки тому

      @geotech with naqeeb

    • @Mentos069
      @Mentos069 2 роки тому

      Yes I am now struggling on the same thing

  • @usha_risvlog4236
    @usha_risvlog4236 2 роки тому

    If the trendline is not coming straight, is it consider ok or not?
    Pliz reply

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  2 роки тому

      what do you mean??

    • @usha_risvlog4236
      @usha_risvlog4236 2 роки тому

      @@GeotechwithNaqeeb i had done my test and my results shows curve graph!
      Is it correct or not

  • @harisattasial1
    @harisattasial1 2 роки тому

    Is this horizontal displacement?

  • @fareselghribi2772
    @fareselghribi2772 4 роки тому

    very helpful thank you.
    what about the correction of area ?

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  3 роки тому +2

      Area correction is not recommended for small scale laboratory tests. It has not been considered in ASTM. For large scale Direct shear test, area correction should be apply.

  • @azheroic
    @azheroic 8 місяців тому

    what about rock direct shear test

  • @MM-rk8vx
    @MM-rk8vx 3 роки тому

    Hi if you still here can the cohesion be negative thanks

  • @hiramoni8911
    @hiramoni8911 3 роки тому

    Is there any rules for normal load

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  3 роки тому

      you need to develop a failure envelop, so normal load can be adjusted with experience. There is no specific rule defined in ASTM.

  • @abrahamalvarez2730
    @abrahamalvarez2730 2 роки тому

    How do you choose those values of 50 100 and 200 for Normal stress? If the answer is checking the depth of the sample, could you specify more? Because I never see an example where they calculate the normal stress for this type of problem. Thank you

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  2 роки тому

      In direct shear test, we don't simulate the effective depth rather than that in accordance to ASTM D3080 we need to develop a failure envelop. so its upto you, you can either adopt normal stresses of 25, 50 and 100 kpa as well. so it is not mendatory to adopt 50, 100 and 200 kpa. For more details plz read ASTM carefully

  • @meghanavaka3300
    @meghanavaka3300 2 роки тому

    If chohesion increases angle of friction also increases aa please reply me

    • @GeotechwithNaqeeb
      @GeotechwithNaqeeb  2 роки тому

      not necessarily. it depends on soil type and particle shape etc

    • @meghanavaka3300
      @meghanavaka3300 2 роки тому

      Thank you what happens with black soil

  • @salmanmalik7895
    @salmanmalik7895 3 роки тому

    kindly share the excle file as well as the software used if possible CASTeR: Computer Aided Soil Test Report

  • @awadh247engineer9
    @awadh247engineer9 Рік тому

    Sir Excel sheet provide Kara digye

  • @ammaral-sultan3256
    @ammaral-sultan3256 2 роки тому +1

    may you please share the excel sheet?

  • @jalamsinhdarbar2414
    @jalamsinhdarbar2414 2 роки тому

    Excel sheet download

  • @hemantydv55
    @hemantydv55 7 місяців тому

    thank you

  • @bulildingmaterialtesting
    @bulildingmaterialtesting 3 роки тому +1

    Thanks

    • @ALOKCHROY
      @ALOKCHROY 2 роки тому

      may you please share the excel sheet?