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All Journal Jurnal Manajemen Risiko Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi
Mochamad Gaharu Dida Devedo
Universitas Mulawarman
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering

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ANALISIS PERBAIKAN TANAH DASAR SANGAT LUNAK MENGGUNAKAN KOMBINASI MATRAS BAMBU DAN TIMBUNAN LIMESTONE PADA JALAN INSPEKSI IRIGASI Ian Karunia Perkasa; Mochamad Gaharu Dida Devedo; Lidwina Putri Astani; Ratri Bodromulatsih; Suudi Al Mukarom
Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi Vol 10, No 1 (2026): JTS TEKNOLOGI SIPIL
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ts.v10i1.26673

Abstract

The construction of inspection roads in irrigation networks frequently faces challenges due to very soft subgrade conditions with low bearing capacity. This condition is commonly found in alluvial areas dominated by sandy clay with a high degree of saturation. Field testing using the Dynamic Cone Penetration (DCP) method in the Glapan Timur Main Canal area indicates that the average California Bearing Ratio (CBR) of the subgrade is only 1.34%, which is far below the minimum requirement of 6% for inspection road construction.This study aims to analyze the effectiveness of combining bamboo mats as a separator layer and limestone embankment as a subbase layer to improve subgrade bearing capacity. The research method includes field data analysis, interpretation of CBR values based on DCP test results, and pavement structure design referring to the 2017 Pavement Design Manual and KP-04.The analysis shows that bamboo mats effectively prevent the mixing of soft soil and embankment material while also helping distribute initial loads. The use of limestone with a thickness of 25 cm and a CBR value exceeding 60% significantly improves the bearing capacity of the pavement system so that it meets the required technical criteria. This method is considered effective, economical, and practical, particularly in areas with limited access to modern construction materials.
Identification of Risks of Delays in the Construction of Jalan Animal Hospital Mochamad Gaharu Dida Devedo; Ardhan Ismail; Ridzky Zul Asdi; Chalsi Mala Sari; Kartika Tristanto; Muhammad Ibadurrahman Arrasyid Supriyanto
JURNAL MANAJEMEN RISIKO Vol. 6 No. 2 (2025): December
Publisher : Pasca Sarjana UKI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/mr.v6i2.7350

Abstract

Timely completion of hospital construction projects is crucial to support public health services, but delays are a common problem that has an impact on increased costs and delayed social benefits. This study aims to identify the risk factors for causing delays and analyze the level of significance in the case study of the construction of the Jalan Kehewanan Hospital in Tenggarong. This study uses a qualitative approach with primary data collected through semi-structured interviews with the implementing contractor. Data analysis is carried out by mapping identified risks into risk matrices based on likelihood and impact. The results of the study identified four main risk factors, namely (1) Design Changes, (2) High Rainfall, (3) Restrictions on Working Hours by Residents, and (4) Equipment Damage. The risk assessment showed that Design Change (value 15) and High Rainfall (value 12) were the two factors with the most significant High risk level, while the other two factors were at Medium levels. These findings imply that project management should prioritize mitigation strategies on aspects of internal design management and anticipation of external weather factors to ensure the smooth running of the project
Co-Authors Ardhan Ismail Chalsi Mala Sari Ian Karunia Perkasa Kartika Tristanto Lidwina Putri Astani Muhammad Ibadurrahman Arrasyid Supriyanto Ratri Bodromulatsih Ridzky Zul Asdi Suudi Al Mukarom