LEVELLING: Comp 1

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  • เผยแพร่เมื่อ 3 ก.พ. 2025

ความคิดเห็น • 21

  • @cutieb3rry672
    @cutieb3rry672 3 ปีที่แล้ว +3

    thank you dr sebab terangkan dengan details sekali u save student's life :)) may allah bless u always

  • @ahmadimran4401
    @ahmadimran4401 3 ปีที่แล้ว +2

    Penerangan yang sangat jelas dan amat membantu

  • @khh5651
    @khh5651 ปีที่แล้ว +1

    Is it normal to have a negative delta
    If so do we write it with the negative sign or just leave it

    • @SURVEYORAbdSukor_Geomatics
      @SURVEYORAbdSukor_Geomatics  ปีที่แล้ว

      TQ for your response. The (-ve) or (+ve) sign shows us the error type. If your error (delta) is negative, then your correction applied to the observed value must be (+ve); and vice versa.

  • @ibnishak8191
    @ibnishak8191 3 ปีที่แล้ว +1

    Salam Sir,saya nak tanya, kalau kita nak bina rumah sendiri macam mana kita nak dapatkan RL? Boleh dapat terus dari Total Station ke RL tu? Berminat nak belajar.

    • @SURVEYORAbdSukor_Geomatics
      @SURVEYORAbdSukor_Geomatics  3 ปีที่แล้ว +1

      Terima kasih kerana bertanya... boleh saya tahu untuk apa RL bagi bina rumah sendiri? Biasanya kita bina rumah sendiri, tapak rumah akan sama atau lebih tinggi sedikit dari tinggi jalan sedia ada. Yang penting, tambakan bagi tapak rumah lebih kurang rata/sama. RL adalah Reduce Level ( Aras Laras/Ketinggian) yang kita rujuk dari Batu Aras . Nilai RL setiap Batu Aras kita boleh dapati/beli dari pihak JUPeM (Jabatan Ukur).

    • @ibnishak8191
      @ibnishak8191 3 ปีที่แล้ว

      @@SURVEYORAbdSukor_Geomatics oo RL tu reduce level. Saya ingat RL tu Real Level dari aras laut. So kena dapatkan dari jupem la kan. Boleh saya tau cara/kaedah Jupem tentukan/tetapkan tanda aras tu? Terima kasih.

  • @pggnatasag9511
    @pggnatasag9511 3 ปีที่แล้ว

    hi, it seems the backward run took from the same points taken in the forward run...elevation of each must be the same after adjustment right? but as u see the elevations are not same even though it has been adjusted.....( lets say CP2 and CP2' must have the same level because the same point taken from forward and backward run.....)

    • @SURVEYORAbdSukor_Geomatics
      @SURVEYORAbdSukor_Geomatics  3 ปีที่แล้ว +1

      Thank you for your response. Actually in this example, the cp1 & cp1' is not the same point. Likewise, the cp2 & cp2' is a different point also. That's why the RL is not the same, for forward & backward run. If the point for forward & backward point is the same point, I'll use the same notation, i.e. (cp1 for forward run & cp1 for a backward run). Sames goes to cp2. Thank you .

    • @pggnatasag9511
      @pggnatasag9511 3 ปีที่แล้ว

      @@SURVEYORAbdSukor_Geomatics thanks, just in case all tps in forward run were used just the same in the backward. how is the adjustment? lets say a little bit +-13mm misclosure

    • @SURVEYORAbdSukor_Geomatics
      @SURVEYORAbdSukor_Geomatics  3 ปีที่แล้ว

      @@pggnatasag9511 Thank you. When we run the leveling loop using the same CP's, as forward and backward, its applied the same principle, That's means, the total error is divided by the number of FS reading. And the corrections apply the same to all the FS readings.

  • @francisaddison3360
    @francisaddison3360 3 ปีที่แล้ว

    Plz how did you calculate for the adjustment

    • @SURVEYORAbdSukor_Geomatics
      @SURVEYORAbdSukor_Geomatics  3 ปีที่แล้ว

      TQ.. the errors accumulate. The error is (0.008) for 6 observations (FR), so the correction applied to each observation is 0.0013. The (-ve) sign is because the total error is more (+ve)

  • @babvvrus8372
    @babvvrus8372 3 ปีที่แล้ว +1

    Kenapa 0.008/6 = -0.0013 .. bukannya +0.0013?

    • @SURVEYORAbdSukor_Geomatics
      @SURVEYORAbdSukor_Geomatics  3 ปีที่แล้ว +1

      Disebabkan nilai selisih yang diperolehi adalah +ve, maka nilai pembetulan adalah -ve. Jika pembetulan diberikan nilai +ve, maka nilai selisih akan bertambah besar.

    • @SURVEYORAbdSukor_Geomatics
      @SURVEYORAbdSukor_Geomatics  3 ปีที่แล้ว

      TQ for yr comment. Actually 0.008/6 = 0.0013. But when we want to give the correction, the value is (-0.0013). If you give the corrections with (+0.0013), the RL for TBM 6 will be 31.525 + 0.008 = 31.533. The error will be bigger than the actual value. The concept is, When an error is +ve, the corrections apply must be -ve. Because it's a closed-loop and we must get back the actual value of TBM 6 (31.517).

  • @qawekazii
    @qawekazii 9 หลายเดือนก่อน

    I'm English pleaseeee 😢

  • @fakhrusysyakirin9899
    @fakhrusysyakirin9899 2 ปีที่แล้ว

    Hello and good morning lecturer can you teaching me how to count this table levelling . I want your whatsapp number so that we can discuss about this clearly . I am first semester for this subject.