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All Journal Jurnal VORTEKS International Journal of Natural Science Studies and Development (IJOSS)
Lubis, Muhammad Yusuf Parlagutan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Soil investigation dutch penetration test implementation of North Sumatra Polda Flat Houses Suita, Diana; Simanjuntak, Johan Oberlyn; Lubis, Muhammad Yusuf Parlagutan; Simorangkir, Simon Petrus
Jurnal VORTEKS Vol. 5 No. 2 (2024): October 2024
Publisher : Program Studi Teknik mesin, Fakultas Teknik, Universitas Al Azhar Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54123/vorteks.v5i2.390

Abstract

From the results of drilling tests with machine drills, standard penetration tests (SPT), and DCPT or sondir tests, several conclusions can be taken as follows: 1). The results of boring tests show that the soil layer has medium soil consistency at a depth of 0 - 9.85 meters with NSPT value 10 – 30. 2). The soil layer consists of sandy clay, fine sand pumice stone, and fine sand. 3). Test results for the depth of solid soil at a depth of 18.6 – 19.00 meters. 4. The cone tip resistance at point S-01 is 200 kg/cm2 and S-02 is 173 kg/cm2 5). Calculation of the vertical Bearing Capacity (Qi) of the pile foundation from SPT data using a safety factor for tip penetration resistance = 3, for sticky resistance used = 5. 6). For large construction loads using deep foundations, it is necessary to check to a depth of > 10 meters or attain NSPT 60 in a row 3 times
Impact of CBR Value of Soil in Soaked and Unsoaked Conditions Based on 2018 Division 3 Bill Specifications Lubis, Muhammad Yusuf Parlagutan
International Journal of Natural Science Studies and Development (IJOSS) Vol. 1 No. 1 (2024): IJOSS
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijoss.v1i1.6

Abstract

Soil is a construction material that is used as embankment to provide better soil bearing capacity and resilience to the soil itself. This research aims to determine the comparison of the CBR value of soil in soaked and unsoaked conditions based on the provisions of the 2018 Directoral of Highways Specifications Division 3.2 regarding embankments. In the research, the CBR results in the soaked condition were 6.15% and the unsoaked CBR was 9.64%. The CBR value requirement based on the 2018 Specifications is a minimum of 6% of the results obtained that meet the requirements for embankment CBR value, where the CBR value in the soaked condition is greater than the unsoaked condition. Based on these results, soaked embankment soil is suitable for use if the soil is compacted under conditions of continuous work, while unsoaked embankment soil can be used after the CBR value meets after the soaking process or a drying period of 4 days (96 hours).
Co-Authors Giawa, Herman Hani, Sheila RINI RINI Simanjuntak, Johan Oberlyn Simorangkir, Simon Petrus Suita, Diana