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PRESUNIVE CIVIL ENGINEERING JOURNAL
Published by President University
ISSN : -     EISSN : 2987145X     DOI : -
Core Subject : Art, Engineering,
Arts Civil Engineering, Building, Construction & Architecture Control & Systems Engineering
PRESUNIVE CIVIL ENGINEERING JOURNAL [ISSN2987-145X (online)] is a scientific publication media for researchers, students as well as practitioners in the area of expertise of Structural Engineering, Construction Engineering & Management, Geotechnical Engineering, Water Resources Engineering, and Transportation Engineering. The Journal publishes in April and October under the supervision of the Civil Engineering Study Program, President University.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Teknik Lingkungan
Articles 5 Documents
 1 
Search results for , issue "Vol 3, No 1 (2025)" : 5 Documents clear
Study of Base Shear and Inter-Story Drift due to Earthquake Forces on a Ten-Story Building Structure in Surakarta Assidiq, Yudistira Cahaya; Bali, Ika
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 3, No 1 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v3i1.5627

Abstract

Earthquakes are the frequent natural disasters that hit Indonesia as a consequence of the country's geographical location. Surakarta City become a region that frequently suffers the effects of earthquakes. Earthquake disasters threaten high-rise building structures in Surakarta City, where earthquake loads acting on the structure can cause damage and even structural collapse. These historical and geographical reasons become the foundation of this research to analyze high-rise building structures in Surakarta City. In this study, the structural conditions of the analyzed high-rise buildings comply with the equivalent static method's analysis requirements, so that this method can be employed in this research. The equivalent static analysis was conducted through manual calculation and the ETABS program. This study focuses on several structural parameters, including base shear force, and inter-story drift. Based on the analysis that was already conducted, the base shear force was obtained at 14392.365 kN through manual calculation and 14984.490 kN through ETABS program analysis. The inter-story drift value that was already calculated fulfils the maximum threshold requirements, where the inter-story drift values are 17.984 mm – 68.183 mm in the X direction and 9.846 mm - 46.804 mm in the Y direction.
Cultural Influence towards Corruption: Perceptions of Construction Practitioners in Indonesia Hansen, Seng
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 3, No 1 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v3i1.5817

Abstract

The construction sector is one of the most vulnerable sectors to corruption. Previous publications have examined the causes, types, impacts, and strategies for preventing and eradicating corrupt practices in the construction sector. This research, however, focuses on the influence of cultural aspects on corrupt practices in the Indonesian construction sector. Through a mixed-method approach, this research identifies various forms of corruption in the construction sector and measures construction practitioners’ perceptions regarding the frequency of these corrupt practices. In summary, 14 forms of corrupt practices can occur at four stages of construction procurement. The analysis results also show practitioners’ perception of corruption as a norm in the construction business. This is motivated by the influence of cultural aspects in Indonesian society, especially related to the practice of connections and insiders, as well as a permissive attitude towards corruption. The results of this research contribute as a reference for stakeholders in understanding the influence of cultural aspects comprehensively so that they can take effective steps in establishing an anti-corruption culture in Indonesia.
Shear Strength Reduction of Expansive Soil and Its Impact on Sheet Pile Structure Stability (Study at Cikarang District, Bekasi Regency, West Java) Sudjatmiko, Eddy Triyanto; Alifia, Shilan Nazwa
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 3, No 1 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v3i1.5895

Abstract

Expansive clay soils are classified as a problematic soil type, which is very sensitive to changes in moisture content. This sensitivity causes volume fluctuations and a decrease in soil strength parameters over time. The phenomenon has implications for the degradation of soil shear strength, which is often overlooked in long-term stability analysis. A real case happened in Bekasi Regency, where a slope retaining sheet pile experiencing a slant that was not predicted in the initial design. At the design and construction stage, the structure did not experience movement. However, over the time, the structure experienced a slow movement causing it to become lopsided and severely damaged, affecting the road below. This condition is suspected to be due to a decrease in soil strength over time. To investigate this issue, this thesis undertakes a numerical modeling approach with the Finite Element Method (PLAXIS 2D). It allows the simulation of gradual deterioration of soil parameters including cohesion (c), internal shear angle (ϕ) and modulus of elasticity (E) until results are obtained that match the current field conditions. The analysis revealed that the main cause of the sheet pile slope was a 35% decrease in soil shear strength after 13 years due to expansive soil characteristics. The cohesion of the top layer was reduced to 8.48 kN/m², the internal friction angle to 2.75°, and the elastic modulus to 1914.67 kN/m². In the second layer, the cohesion value was 25.14 kN/m², while the internal friction angle was 11.47° and the elastic modulus was 7218.71 kN/m². The cohesion in the third layer reached 36.28 kN/m², an internal friction angle of 12.71°, with an elastic modulus of 10466.96 kN/m², while in the fourth layer the cohesion reached 42.66 kN/m² and an internal friction angle of 13.42° with an elastic modulus of 12329.57 kN/m². Accompanied by a bending moment generated of 88.6 tons.m so it is recommended to use corrugated concrete sheet pile (CCSP) type W600 Type B for this condition. The study revealed that the stepwise decrease in the shear strength of the soil, caused by its expansive nature, was a major factor in the instability of the sheet pile structure.
Effect of Electrokinetic Soil Improvement on CBR Value of Expansive Clay Darmiyanti, Lydia; Imanuel, Ivan; Prihartono, Prihartono
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 3, No 1 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v3i1.5881

Abstract

Improvement of low permeability soils with high plasticity index and high shrinkage expansion cannot be done by soil compaction or consolidation. The structure of expansive clays is influenced by the history of soil formation. Expansive soil structure is composed of two tetrahedra with one octahedron. Van der Waals bonds bind them together. Kolinite, illite, and montmorillonite are minerals in expansive soils. Montmorillonite has the weakest bond of the others so that other elements can easily enter the clay structure and bind to it. The ability of clay soil to absorb water or other minerals that come close is due to its cation exchange capacity (CEC). Clay, with its negative ions, will attract positive ions that approach the soil surface. Water with H+ content will easily enter into the structure of the clay soil, bond with it, and cause the soil to swell.Electrokinetic soil improvement is effective on clay soils. With the nature and characteristics of clay soil, positively charged stabilizing ions are required. Positive ions will enter due to the CEC process and affect the mineral content of the soil, thereby improving the physical and mechanical properties of the clay soil. Therefore, this research needs to be conducted to improve clay soil using the electrokinetic method with a calcium dioxide solution. An increase in the Bearing Capacity Ratio (CBR) value occurred after being improved by electrokinetics using four variations of voltage application.The variation of applied voltage gives different results to the change of soil mechanical properties. The original soil CBR of 0.093% increased for all stress applications. The optimum CBR value occurred in the soil applied with 15V. The resulting CBR increase reached 200% of the original soil CBR.
Comparative Analysis of Embankment Slope Stability using Geofoam Sudjatmiko, Eddy Triyanto; Hairunnisa, Arsila
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 3, No 1 (2025)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v3i1.5879

Abstract

Landslides caused by land movement due to unstable soil are one of the causes of infrastructure damage such as cracks or collapse and can pose various threats to humans. The development of technology in geotechnics called geofoam material which is also known as lightweight material can be solution. This study aims to determine whether geofoam can be used as a partial replacement material for soil by comparing the results that have been analyzed using Plaxis 2D software. Landslides with existing silt clay soil conditions occur because the safety factor = 1 in undrained conditions. Meanwhile, on embankment soil built with geofoam measuring 1 x 4 m on a 15 m thick embankment and a slope of 1:2, it shows that the safety factor on the slope increases to 1.5 for undrained conditions and 1.9 for drained conditions. A reduction in the amount of geofoam by 37% was carried out and the SF figures were 1.34 for undrained and 1.6 for drained. These results have met the requirements of SNI 8460:2017, where SF>1.25 and external load of 25 kN/m2 did not change the safety factor on the geofoam embankment. In addition, the displacement in undrained and drained conditions on the existing soil reached 27 cm and 31 cm respectively, much different from the displacement on the geofoam which was only 2.3 cm and 2.7 cm. The results of the effective stress distribution pattern and shear strain showed that the activity that occurred on the embankment with geofoam was very low compared to the existing soil. It can be concluded that geofoam material can replace part of the embankment, because it has been proven to be able to stabilize the slope on the embankment. In addition, the more geofoam used, the higher the stability of the embankment.

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