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All Journal Pondasi Journal of Advanced Civil and Environmental Engineering JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION APTEK Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Jurnal Keselamatan Transportasi Jalan
Rachmat Mudiyono
Universitas Islam Sultan Agung
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Environmental Science Mechanical Engineering Physics Social Sciences Transportation

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Analisis Peningkatan Keselamatan Pengguna Jalan Metode HIRARC (Studi Kasus : Jalan Tol Ruas Pejagan Pemalang) Moch. Haekal Bahri; Rachmat Mudiyono; Juny Andry Sulistyo
Pondasi Vol 30, No 2 (2025): Desember 2025
Publisher : UNISSULA Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pondasi.v30i2.49095

Abstract

Traffic growth on the Pejagan–Pemalang Toll Roadincreases the potential for accidents even though capacity and service levelsare relatively good. This study aims to identify accident-prone locations(LRK) and assess the level of infrastructure risk in order to formulatesafety improvement strategies. The methods used include analysis ofEquivalent Accident Number (EAN) and Cumulative Summary (CUSUM) analysis todetermine accident-prone points, followed by risk evaluation using the HazardIdentification, Risk Assessment, and Risk Control (HIRARC) method. The results of the analysisshow that the priority segments in lane A are KM 297 and 305, while inlane B they are KM 263, 251, and 305. The highest risk levels are at KM 297 A(10.33 – Medium), followed by KM 305 B (9.8 – Medium), KM 305 A (7.38 – Medium), andKM 263 B (6 – Medium). Infrastructure conditions such as damaged guardrails, missing guideposts, open drainage, and unprotected segments are dominant risk factors. Recommendations include the installation of rumble strips, speed reducers, rumble dots, ETLE, pavement repairs, and road improvements tosustainably reduce accident rates. 
STUDI EVALUASI DIMENSI DAN PENULANGAN KOLOM BANGUNAN GEDUNG TERMINAL TIPE A DI SALATIGA Hastu Tatas Herarkhi; Sumirin Sumirin; Rachmat Mudiyono
Pondasi Vol 30, No 2 (2025): Desember 2025
Publisher : UNISSULA Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pondasi.v30i2.52748

Abstract

The development of transportation infrastructure demands structural designs that are efficient, economical, and compliant with safety standards. Columns, as primary structural elements in buildings, play a critical role in supporting vertical loads and maintaining overall structural stability. This research aims to analyze and optimize the dimensions and reinforcement of columns in the Terminal Type A Building in Salatiga to achieve material efficiency without compromising structural strength. This study is based on the existing condition of the revitalized terminal building, taking into account gravitational and seismic loads in accordance with SNI 2847:2019 and SNI 1726:2019 standards. Structural analysis was conducted using building structure software to obtain the structural response and evaluate the strength of the column elements. Optimization was carried out by varying the column dimensions and reinforcement configurations to obtain the most efficient outcome in terms of concrete volume and reinforcement weight. The results of the study indicate significant potential for material savings while maintaining compliance with strength performance standards. The optimization process offers an alternative column design that is more economical and efficient, providing valuable reference for practitioners and academics in the planning of similar building structures.
Optimalisasi Durasi dan Biaya Proyek Bendungan Cibeet Paket 1 Menggunakan Metode Least Cost Analysis dengan Penambahan Tenaga Kerja dan Jam Lembur Edi Purnomo; rachmat mudiyono; kartono wibowo
Pondasi Vol 30, No 2 (2025): Desember 2025
Publisher : UNISSULA Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pondasi.v30i2.47556

Abstract

This study aims to optimize project duration and minimize additional costs in the Cibeet Dam Package 1 project by applying the Least Cost Analysis method through strategies of increasing labor workforce and adding overtime hours (1, 2, and 3 hours). Primary and secondary data were collected from project documents and analyzed using Microsoft Project to identify the critical path and perform crashing simulations, as well as Microsoft Excel for cost calculations. The results indicate that increasing labor can accelerate the project duration by up to 15.8% with a 12% increase in cost, while adding overtime hours provides acceleration with relatively lower additional costs. The combination of both strategies yields an optimal balance, achieving a 22.7% reduction in duration with a 15.8% cost increase. This study reinforces the effectiveness of the Least Cost Analysis method as a strategic tool in project management decision-making, especially for controlling risks of delays and cost overruns in construction projects. Further research is recommended to include external variables for more comprehensive outcomes
PERILAKU ANALISIS ASPHALT CONCRETE WEARING COARSE (AC-WC) POROUS DENGAN BAHAN TAMBAH SERAT BAJA DAN RUBBER Surasa Waluya; Rachmat Mudiyono; Juny Andry Sulistyo
Pondasi Vol 30, No 1 (2025): Juni 2025
Publisher : UNISSULA Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pondasi.v30i1.42563

Abstract

In Indonesia, roads often experience water accumulation during rain, leading to slippery conditions and an increased risk of accidents. To address this issue, porous asphalt has been developed using coarse aggregates and low sand content, allowing water to permeate both vertically and horizontally. This technology offers advantages such as improved skid resistance, reduced noise, and enhanced drainage functions, which help mitigate hydroplaning risks and maintain hydrological balance. This study utilized floodwater from Jl. Barito, Semarang Timur, aggregates from AMP PT. Perwita Karya, and JAP-57 polymer asphalt. The addition of LDPE plastic and varying amounts of steel fiber and rubber aimed to enhance the mixture's strength. The results indicated that the addition of rubber and steel fiber influenced the VIM (Void in Mix) value, where higher content reduced VIM and improved the mixture's ability to allow water to pass through.
Co-Authors Abdul Rochim Azman Mohamed Boedi Winarno Edi Purnomo Ferdiano Yogi Pradana Grawira Ganjur Giwangkara Hasanan Md. Nor Hastu Tatas Herarkhi Hermin Poedjiastoeti Iswatun Hasanah Juny Andry Sulistyo Kartono Wibowo M. Faiqun Ni’am Mila Karmilah Moch. Haekal Bahri Muhamad Khudza Alfi Himam Muhamad Yusuf Nur Hafizah A. P Pratikso Safira S Sumirin Sumirin Supriyana Supriyana Supriyana Surasa Waluya Totti Aditya Susanto Widya Ayu Prawesthi Zoggy Ardi Eka Saputra