JURNAL RIVET

Analisa dan Evaluasi Kawasan Sungai Batang Jirak Guna Menanggulangi Banjir pada Kelurahan Pengambiran Kecamatan Lubuk Begalung Kota Padang

Lili Leilany — 2026-01-29

Flooding is a frequent natural disaster in Padang City, particularly in
Pegambiran Village, Lubuk Begalung District. The Batang Jirak River is one of the
rivers that traverses the area and plays a crucial role in flood mitigation. This study
aims to analyze and evaluate the Batang Jirak River area for flood mitigation using
HEC-RAS software. The research method used is hydrological analysis and spatial
analysis using rainfall data, river discharge data, and spatial data of the river area.
The HEC-RAS modeling results indicate that the Batang Jirak River is safe from
flooding with return periods of 2 years, 5 years, 10 years, 25 years, 50 years, and
100 years, thus eliminating the need for further river redesign. Based on the
analysis, several recommendations can be made to prevent future flooding,
including the need to educate the surrounding community to prevent waste from
entering the river and the need to clean the riverbed of mud to maintain the smooth
flow of water.

Analisis Hambatan Samping Pasar Malam Nusa Indah Terhadap Kinerja Ruas Jalan H. Mistar Cokrokusumo

Dita Fathanah Hanifa — 2026-02-03

Pasar Malam Nusa Indah berada di jalan H. Mistar Cokrokusumo merupakan pertemuan arus antara Pelaihari dan Banjarbaru, maka banyak kendaraan, mobil, bus pariwisata, dan truk angkutan yang lewat sehingga dengan adanya aktivitas Pasar Malam Nusa Indah menyebabkan kecepatan kendaraan jadi melambat dan membuat kepadatan. Penelitian ini menganalisis hambatan pada di sisi jalan yang dapat berdampak terhadap kinerja ruas jalan. Penelitian ini membandingkan kondisi ruas jalan saat ada aktivitas pasar dan tanpa aktivitas pasar. Tujuan penelitian untuk mengevaluasi volume lalu lintas, kecepatan, kepadatan Jalan H. Mistar Cokrokusumo dan membandingkan kinerja lalu lintas pada dua kondisi tersebut. Survei volume lalu lintas dan kecepatan dilakukan guna menentukan tingkat kepadatan, serta survei hambatan samping untuk mengetahui sejauh mana pengaruh hambatan tersebut. Analisis data menggunakan metode konvensional yaitu Greenshields, Greenberg, Underwood, dan Bell. Hasil perhitungan menunjukkan bahwa permodelan yang paling relevan adalah model Greenshields dengan kondisi aktivitas pasar volume maksimum dan kecepatan maksimum mengalami penurunan sebesar 1% dan 9% akan tetapi kepadatan maksimum meningkat sebesar 7%. Berdasarkan analisis tingkat pelayanan ruas jalan saat kondisi ada aktivitas pasar didapatkan Indeks Tingkat Pelayanan terendah adalah ITP E yang berarti arus tidak stabil.

Investigation of the Collapsed Dolphin Structure of the Mahakam Bridge Using Bathymetry and Side-Scan Sonar After Collision

Aco Wahyudi Efendi — 2026-02-04

This study investigates the collapse of the dolphin (fender) structure of the Mahakam Bridge in Samarinda, Indonesia, following a collision with a timber-laden pontoon ship. High-resolution bathymetry and side-scan sonar (SSS) techniques were employed to map debris distribution, quantify structural damage, and assess risks to bridge integrity and navigational safety. The dolphin structure, critical for pier protection, suffered catastrophic failure, with debris fields extending 42.6�51.5 m laterally and covering 617.7�721 m�. Bathymetric surveys revealed elevation anomalies of 1�1.5 m at depths of 4.5 m, while SSS identified cylindrical debris (diameter: 8 m) consistent with dolphin components. Integration of these methods enabled precise debris localization (00�50?13.29? S, 117�18?24.51? E) and informed relocation recommendations for navigation aids. The findings underscore the efficacy of remote sensing in turbid riverine environments and provide a framework for post-collision infrastructure assessment.

Analisis Fungsi Manajemen Konstruksi Dalam Pembangunan Gedung Komersil

Gina Sonia — 2025-12-31

Commercial buildings are buildings that accommodate various commercial functions such as villas, hotels, resorts, trade, rental office space, and others. According to their type, commercial buildings are buildings that are planned and designed to generate profits for both owners and users. Based on this thinking, commercial building design considers nine aspects (Wungow, 2011). Factors that must be considered in the construction of commercial buildings and actions taken so that the construction management function has a significant influence on the success of commercial building construction projects in project development. From its definition, construction management applies management functions to a project by utilizing resources effectively and efficiently to achieve project objectives. The main goal of construction management is to manage management functions effectively and efficiently to obtain optimal results as agreed with the project owner. The selected sampling techniques were Interviews/Questionnaires and Primary Data. In this study, a sample of 25 respondents from several different construction service companies was required. Based on Company Status, company type, company work experience, work equipment aspects, capital/finance, HR (Human Resources). Analysis of construction management factors in commercial building construction, analysis of questionnaire data taken from 25 respondents was processed using Microsoft Office Excel 2010.

Experimental Addition of Plastic Sack Layer and Coconut Coir Ash to the Strong Value of Clay Soil Shear

Rismuhad Rahman — 2026-02-04

Land has a very important role in the world of construction such as buildings, bridges, and also road construction. Soil acts as the foundation of construction where the soil must be able to withstand the construction load that stands on it. On Jalan Badak, Tenayan Raya District, Pekanbaru City, Riau Province will be built housing and rigid roads. The problem is, in other locations that are not far from the construction site, there is also a subsidence (change in volume) in the construction of rigid roads due to the traffic load on it. This study aims to analyze the value of shear strength in clay soil stabilization using layers of plastic sacks and coconut coir ash waste. The research method is an experimental study in the laboratory based on SNI 3420:2016 using clay soil taken from Jalan Badak Ujung, Pekanbaru City, Riau. Soil stabilization material with a mixed variation percentage of 15% of the dry weight of the soil. There are 3 variations used, variation 1 is the top plastic sack layer and the ask 15% mixture, variation 2 is the bottom plastic sack layer and the ask 15% mixture, variation 3 is the top and bottom plastic sack layer and the ask 15% mixture. The test specimen is fermented for 7 days, then the sample is tested using a direct shear tool . The results showed a significant increase in the variation 3 test specimen, where the shear strength of the soil increased by 122.06% and the cohesion value increased by 54.35%.