Vol. 32 No. 3 (2025)

Lolu Village, located in the Palu Koro fault groove and has a stratification of soil sediment that is layered with heterogeneous characters. Between the cohesive and granular soils, forming an overlapping layer. Lolu Village has its own challenges in dealing with the potential for earthquakes and liquefaction as a result. One of the liquefaction mitigations in SNI 8460:2017 is stone columns (SC) as a vertical drainage medium that functions to accelerate the rate of pore water dissipation. However, the condition of the layered soil interspersed with cohesive soil with low permeability,…

The Peusangan Watershed is a watershed located in Aceh Province. According to data from the Aceh Irrigation Agency, the downstream area of ​​the Peusangan Watershed frequently experiences flooding, resulting in environmental damage and significant economic losses. Flood management efforts that have been undertaken include the construction of retaining walls. Furthermore, studies are needed to assess the inundation conditions, including flood inundation modeling using HEC-RAS 2D unsteady flow software and ArcGIS 10.5 for mapping the affected areas. The modeling results indicate that the flood…

This study aims to evaluate the performance of Open Graded Friction Course (OGFC) mixtures using Asbuton Murni modified with Elvaloy polymer (PG 82). The research focuses on analyzing asphalt binder characteristics and assessing the resistance of the mixture to functional distress (raveling) and structural distress (rutting and fatigue). The optimum asphalt content was determined in accordance with ASTM D7064/D7064M-08 through Void in Mix (VIM), Cantabro Loss, and draindown tests. Furthermore, the mixture performance was evaluated using Indirect Tensile Fatigue Test (ITFT) and Hamburg Wheel…

A spillway is a critical hydraulic structure used to release excess water when the water surface elevation in a dam exceeds the normal limit. The discharge capacity is strongly influenced by its geometric profile. In Indonesia, ogee and circular spillways are the most commonly used types. The ogee spillway is known for its superior hydraulic performance but features a complex geometry that requires high construction precision. In contrast, the circular spillway offers a simpler design, yet lacks a standardized reference for crest curvature ratios. To address this issue, the Golden ratio Tipe…

Determining toll road rates is an important factor for the sustainability of investment and optimal benefits for users. This study analyzes the sensitivity of traffic volume to rate changes on the Yogyakarta–Bawen Toll Road using secondary data from PT Jasa Marga (Persero) Tbk and PT Jasamarga Jogja Bawen. The methods used include Ability to Pay (ATP) and Willingness to Pay (WTP) determination, time value determination, and macro transportation modeling with PTV Visum. The results show that an increase in toll rates reduces traffic volume, but there is an optimum point that generates maximum…

Abstrak Indonesia merupakan negara dengan tingkat aktivitas seismik tinggi, sehingga perancangan struktur baja tahan gempa menjadi sangat penting. SNI 7860:2020 dan SNI 7972:2020 menetapkan bahwa sambungan balok-kolom dalam Sistem Rangka Pemikul Momen Khusus (SRPMK) harus menggunakan sambungan terprakualifikasi atau diuji untuk memastikan kekakuan dan kapasitas rotasinya. Penelitian ini bertujuan untuk mengkaji kesesuaian profil baja berdasarkan SNI 9150 terhadap perencanaan sambungan Bolted Flange Plate (BFP), salah satu tipe sambungan terprakualifikasi. Studi dilakukan dengan menganalisis…

Abstrak Penutupan muara sungai menimbulkan masalah apabila terdapat infrastruktur penting di dekatnya, seperti Bandara Yogyakarta International Airport (YIA) yang terletak di sisi timur muara Sungai Bogowonto. Sebagai usaha mitigasi, telah dibangun jeti sepanjang 300 m untuk mencegah penutupan muara. Setelah beberapa tahun dibangun, keberhasilan kinerja jeti penting untuk dievaluasi. Penelitian ini terdiri dari analisis citra satelit melalui program CoastSat, analisis karakteristik gelombang berdasarkan data ERA5, pemodelan DELFT3D, serta observasi lapangan. Data ERA5 menunjukkan bahwa tinggi…

Abstrak Mechanically Stabilized Earth Wall (MSE Wall) banyak dilakukan sebagai salah satu alternatif dinding penahan tanah. Ketidaktersediaan material granular bergradasi baik sesuai dengan persyaratan menyebabkan penggunaan tanah marginal tidak dapat dihindari. Penelitian ini bertujuan untuk melihat performa dari MSE Wall dengan timbunan tanah marginal. Pada penelitian ini akan dilakukan pembuatan model dinding dengan tinggi 3 m menggunakan timbunan tanah marginal clayey silt. Perkuatan yang akan digunakan adalah strip geosintetik yang terbuat dari anyaman benang polyester kuat tarik tinggi…

To ensure quality, public safety, competence and responsibility of construction, every country implements a licensing system for construction contractors. In Indonesia, regulations on contractor licensing are regulated by the Construction Services Development Agency (LPJK), under the Ministry of Public Works and Housing (PUPR). Its primary objective is to ensure public safety by verifying that business entities possess adequate competence and accountability. This research aims to compares Indonesia

Small and medium-scale contractors in Indonesia face significant challenges in performance measurement, as their assessments are often limited to financial metrics and lack a structured system. This study aims to identify key performance indicators (KPIs) relevant to such contractors as an initial step toward developing a Balanced Scorecard-based performance measurement system. Data were collected through questionnaires distributed to 28 respondents from 20 contractor companies in Bandung City. The analysis employed comparative tests to ensure consistency across respondent groups, statistical…