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Iva Yenis Septiariva
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INDONESIA
Jurnal Riset Rekayasa Sipil
ISSN : 25797999     EISSN : -     DOI : -
Core Subject : Social, Engineering,
The Journal of Research and Civil Engineering is a journal to accommodate the writings of researchers and professionals in the field of civil engineering.
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Articles 115 Documents
ANALISIS PEMENUHAN AIR BERSIH DI DAERAH CEKUNGAN AIR TANAH Muji Rifai; Agus Hari Wahyudi; Hendriana Ywangtini
Jurnal Riset Rekayasa Sipil Vol 9, No 1 (2025): September 2025
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v9i1.109778

Abstract

Population and economic growth have significantly increased human demand for clean water, both in terms of quantity and quality. One way to meet this growing demand is through the extraction of groundwater. This study aims to analyze the fulfilment of clean water needs in the city of Salatiga, which is located within the Rawapening and Salatiga Groundwater Basins. The study emphasizes the importance of sustainable water resource management to ensure future water availability. Using a qualitative descriptive approach, the research was conducted through literature review, field surveys, geoelectrical measurements, hydrological analysis, and the development of a water balance assessment. The results indicate that the available groundwater potential is approximately 5 m³/second, while current utilization is only around 0.069 m³/second. Analysis of domestic and non-domestic water demand reveals an increasing trend through 2028 in line with population growth. The water balance analysis shows seasonal fluctuations, with both surplus and deficit periods. A water deficit occurs during eight months (May to December), with the highest shortfall recorded in October (397 liters/second) and the lowest in May (23 liters/second). To address this shortfall, groundwater resources are proposed as an alternative solution. Given Salatiga's location within a groundwater basin, the city possesses considerable groundwater potential. This presents an opportunity for clean water provision through the development of deep wells, guided by the recommendations from geoelectrical surveys (both in terms of location and potential), to ensure optimal water yield for meeting clean water demands.
KALIBRASI DATA HUJAN SATELIT TERHADAP GROUND UNTUK ANALISIS DEBIT BANJIR DI KALI PEPE, SURAKARTA Alexander Reinhard Sinaga; Rintis Hadiani; Solichin S
Jurnal Riset Rekayasa Sipil Vol 8, No 2 (2025): Maret 2025
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v8i2.101618

Abstract

Kali Pepe yang berada di Kota Surakarta merupakan bagian dari Daerah Aliran Sungai (DAS) Bengawan Solo yang sering mengalami banjir akibat curah hujan tinggi, perubahan tata guna lahan, dan sistem drainase yang kurang optimal. Penelitian ini bertujuan untuk mengkalibrasi data hujan satelit PERSIANN terhadap data hujan lapangan (ground) untuk meningkatkan akurasi dalam analisis debit banjir periode ulang di Kali Pepe, Surakarta. Studi ini mengunakan data hujan dari 3 stasiun hujan yaitu Baki, Pabelan dan Mojolaban. Kalibrasi dilakukan menggunakan metode regresi linear dan algoritma Random Forest untuk meminimalkan bias pada data hujan satelit. Data hujan yang terkalibrasi digunakan untuk menganalisis debit banjir periode ulang dengan metode HSS Gama 1 dan HSS Limantara. Dari penelitian ini diharapkan memperoleh debit banjir periode ulang Q2, Q5, Q10, Q25, Q50, Q100, Q200, dan Q1000 dari data hujan satelit terkalibrasi dan data hujan ground. Berdasarkan hasil analisis, data hujan satelit PERSIANN yang telah dikalibrasi dengan metode HSS Gama 1 menghasilkan debit banjir Q2 sebesar 47,07 m3/detik, Q5 sebesar 51,82 m3/detik, Q10 sebesar 54,97 m3/detik, Q25 sebesar 58,94 m3/detik, Q50 sebesar 61,89 m3/detik, Q100 sebesar 64,82 m3/detik, Q200 sebesar 67,74 m3/detik, dan Q1000 sebesar 74,49 m3/detik. Dengan metode HSS Limantara, diperoleh debit banjir Q2 sebesar 26,27 m3/detik, Q5 sebesar 28,99 m3/detik, Q10 sebesar 30,79 m3/detik, Q25 sebesar 33,07 m3/detik, Q50 sebesar 34,76 m3/detik, Q100 sebesar 36,43 m3/detik, Q200 sebesar 38,10 m3/detik, dan Q1000 sebesar 41,97 m3/detik.
PERBANDINGAN BIAYA DAN WAKTU ANTARA METODE KONVENSIONAL DENGAN METODE MODULAR MENGGUNAKAN MICROSOFT PROJECT Nabila Yusriyya Huwaida; Fajar Sri Handayani; Muji Rifai
Jurnal Riset Rekayasa Sipil Vol 8, No 1 (2024): September 2024
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v8i1.95314

Abstract

Indonesia's construction sector is experiencing rapid growth, this proven by numerous development projects, including a sub-district building construction project, aiming to optimize community services.  A project must have three aspects, namely cost, quality and time. Choosing an implementation method is very important so that a project can achieve these three goals. The research method used a quantitative descriptive approach with the aim of comparing cost and time aspects between conventional methods and modular methods. The conventional approach involves working on site using conventional building materials, while the modular approach involves the use of pre-fabricated modules. In analyzing the costs and time of construction of the Grabag Sub-district office building, Purworejo Regency, Microsoft project application was used to calculate the duration of the work. The cost analysis show that building structure work using the conventional method costs Rp.3,086,929,413.11, while the modular method costs Rp.3,646,018,620.52. So the difference in the cost of construction work is Rp.559,089,207.42 or 18.11% higher for work using the modular method. The time analysis obtained building structure work using conventional methods require 150 days while the modular method is 87 days or time efficiency of 63 days or 42% lower for work with modular methods.  The results of the Time Cost Trade Off (TCTO) calculation showed that the total project cost for conventional construction was Rp.2,781,017,489 while the cost for modular construction was Rp.3,117,530,328. So a difference of Rp.336,512,839 is higher for modular construction. Therefore, conventional construction is the most economical option for the sub-district building.
PENGGUNAAN SIKACIM CONCRETE ADDITIVE TERHADAP KUAT TEKAN BETON PASIR DENGAN KANDUNGAN LUMPUR TINGGI Delia Untari; Zendy Bima Mahardana; Fauzie Nursandah
Jurnal Riset Rekayasa Sipil Vol 9, No 1 (2025): September 2025
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v9i1.108348

Abstract

Beton merupakan material konstruksi yang penting dalam berbagai proyek pembangunan, tetapi kualitasnya sering menurun akibat kadar lumpur tinggi pada agregat halus (pasir). Lumpur dapat menutupi permukaan pasir sehingga proses pencampuran hingga hidrasi semenmenjadi tidak sempurna. Penelitian ini bertujuan untuk menganalisis batas optimal kadar lumpur yang dapat ditoleransi dengan penggunaan SikaCim Concrete Additive (SCA) 0,75% dari berat semen pada kadar lumpur yang melebihi batas standar SK SNI S-04-1989-F. Pencampuran beton mengacu pada SNI 03-2834-2000 dengan metode eksperimen laboratorium yang menggunakanbenda uji silinder ukuran 15x 30cm.Variasi kadar lumpur pada pasiradalah 5%, 7,5%, dan 10%. Pengujian yang dilakukan meliputi workability (uji slump) serta kuat tekan beton menggunakan UTM (Universal Testing Machine). Berdasarkan hasil yang diperoleh beton dengan dosis SCA 0,75% kuat tekan meningkat sebesar 29% pada kadar lumpur 5% dan sebesar 20% pada kadar lumpur 7,5%. Sedangkan pada agregat halus dengan kadar lumpur 10% menurun menjadi 20,1 Mpa (6,5%) dari kuat tekan rencana 21,5 Mpa. Penambahan SCA 0,75% dari berat semen terbukti efektif meningkatkan workability dengan memperbaiki hidrasi semen yang terganggu akibat kadar lumpur tinggi pada pasir serta daya lekat antara agregat dan pasta semen. Batas toleransi kadar lumpur maksimal pada kuat tekan rencana adalah 9,5% yang diperoleh dari persamaan regresi linear. Dari penelitian ini penambahan bahan aditif SCA dapat menjadi solusi efektif dalam pembuatan beton di daerah yang keterbatasan sumber material berkualitas.
KEMIRINGAN LERENG YANG TEPAT UNTUK MENCEGAH KELONGSORAN DI DESA BARENG KECAMATAN SAWAHAN KABUPATEN NGANJUK Salman Alfaridh Pasya; Agata Iwan Candra; Niko Andika Erwanda; Nadi Rheiza Fathurrohman; Atsfiela Dzulkhan Qalby; Muhammad Rosyid Abdul Rohman Fauzy; Prendy Eliya Mahendra
Jurnal Riset Rekayasa Sipil Vol 7, No 2 (2024): Maret 2024
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v7i2.85905

Abstract

Sawahan District is one of 25 sub-districts in Nganjuk Regency, East Java, Indonesia. Sawahan District has quite good agricultural and tourism potential. Recently, landslides have hit several areas in Nganjuk Regency, one of which is Sawahan District. The area has the potential for landslides because it is dominated by hilly areas with steep slopes and high rainfall intensity. The impact of this disaster included road access that was cut off between the village and the sub-district and the main road leading to the Sedudo Waterfall tour. This study aims to identify soil properties, soil consistency, shear angle, and slope safety factor. The method used is the Atterberg limit test, sieve analysis, soil shear strength, and slope stability calculations using the Bishop method. The test results show that the soil is classified as CL with low plasticity and shear angle, in wet soil it produces a shear angle value of 19.74° and an Fs value of 0.20 while in dry conditions it produces a shear angle value of 24.86° and an Fs value of 0.28. Based on the analysis it is suggested that the slope is 50° to achieve Fs 1.09. This research can be used as a basic reference for planning before construction is carried out and provides slope slope design recommendations for slope planning that is safe to prevent landslides.
ANALISIS KINERJA SIMPANG EMPAT TRUNOJOYO – KH. SAJAD – DR. WAHIDIN KABUPATEN SUMENEP MENGGUNAKAN PERANGKAT LUNAK PTV VISTRO Nur Aryasatya Nugraha; Lydia Novitriana Nur Hidayati; Budi Yulianto
Jurnal Riset Rekayasa Sipil Vol 9, No 1 (2025): September 2025
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v9i1.109779

Abstract

Intersection Four Trunojoyo - KH. Sajad - Dr. Wahidin are intersections included in the Trunojoyo road network. Intersection Four Trunojoyo - KH Sajad - Dr. Wahidin is a newly implemented intersection because it was not an intersection five years ago. The research aims to analyse the performance of the signalised intersection at the Trunojoyo - KH Sajad - Dr. Wahidin. The study analysis used PTV Vistro software. The modelling method refers to HCM 2010. Modelling is done with two scenarios: existing and locally optimised conditions. After modelling the existing conditions, validation is carried out through queue length using Microsoft Excel software. There is an increase in performance modelling when a single optimisation scenario and vehicle actuated is carried out compared to existing conditions. In the existing conditions, the Trunojoyo - KH. In the morning peak hour, Sajad - Dr. Wahidin Interchange produces a DS value = 0.39, D = 34.52 seconds /mp, and the afternoon peak hour DS value = 0.41 and D = 38.59. The best optimisation performance is in the vehicle actuated optimisation type scheme 1, with an extension time of 2 seconds. The intersection of Trunojoyo - KH. Sajad - Dr. Wahidin has a degree of saturation (DS) = 0.34 and delay = 19.4 sec/smp in the morning peak hour, while the afternoon peak hour produces a degree of saturation (DS) = 0.41 and delay = 21.18 sec/smp. The use of detectors in PTV Vistro modeling can improve intersection performance, followed by the appropriate setting of other signal parameters.
IDENTIFIKASI WASTE DENGAN MENERAPKAN METODE BORDA DAN ROOT CAUSE ANALYSIS PADA PROYEK KONSTRUKSI Veren Nurlin Nabilah; Setiono S; Ary Setyawan
Jurnal Riset Rekayasa Sipil Vol 8, No 2 (2025): Maret 2025
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v8i2.101620

Abstract

One of the factors contributing to Indonesia’s high annual construction activity is the building of high-rise structures. However, every building project can potentially create several issues that lead to waste. Lean construction which aims to reduce waste and increase value, was therefore used. Waste is any type of loss from an activity that produces expenses either directly or indirectly but does not result in a product’s value or benefits. The purpose of this study is to determine the most common types of garbage and examine the factors that contribute to it. This research will include a review to identify the variables that contribute to waste and factors that cause it, as well as a root cause analysis using the 5-why’s method. According to the computation’s findings, the most common waste variables and their causing factors were 179 points for defects and careless supervision, 155 points for overprocessing and a factor for misunderstandings brought on by design modifications, and 145 points for overproduction and factor related to a lack of control material production. Defects are the main cause of waste because they prevent cost overruns, overprocessing because of a lack of resources for creating new design drawings, and overproduction because the planning and production implementation teams in the field do not coordinate.
ANALISIS EARNED VALUE TERHADAP BIAYA DAN WAKTU GEDUNG DIREKTORAT POLITEKNIK PU SEMARANG DENGAN PRIMAVERA P6 Noel Eka Nugraha; Fajar Sri Handayani; Setiono Setiono
Jurnal Riset Rekayasa Sipil Vol 8, No 1 (2024): September 2024
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v8i1.85304

Abstract

Semarang PU Politeknik Building Construction Project is the construction of an educational building area developed in collaboration between PT Wika Gedung and PT Yodya Karya with a construction management consultant contract value of 3.9 billion and an executing contractor contract value of 281 billion. In this research, a research method with a quantitative descriptive approach was taken. This means that in this project, the condition of the project is described based on the analysis of the data obtained from the project. The data is then processed using descriptive and analytical methods. The Earned Value or EV concept method studies comparing the value of the work completed against the budget provided to carry out the work. The result of this research is to analyze using the Primavera P6 program whether the project is running at an appropriate cost and a schedule that does not deviate from the contract. The results of the analysis obtained for the implementation of the weekly analysis of the Earned Value indicator value obtained is positive which means that in the entire week of analysis, the project runs faster and more economically. The EAC and ETC values obtained are smaller than the contract cost, indicating that the project is planned to be completed at a smaller cost. The deviation value obtained is at an average of 0.08% with the smallest deviation being 0.0794% so the project will experience a profit of 8% on the completion date.
STUDI EKSPERIMENTAL PENGARUH JENIS SEKRUP TERHADAP KEKUATAN DAN KEGAGALAN SAMBUNGAN PADA DINDING CLT (CROSS LAMINATED TIMBER) KAYU AKASIA YANG SEJAJAR Shinta Putri Nyolinda; Achmad Basuki; Halwan Alfisa Saifullah
Jurnal Riset Rekayasa Sipil Vol 9, No 1 (2025): September 2025
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v9i1.104558

Abstract

Penelitian ini bertujuan untuk menganalisis kapasitas geser dan mode keruntuhan sambungan antar dinding Cross Laminated Timber (CLT) kayu akasia sejajar dengan sambungan half lap joint dan variasi jenis sekrup (lag screw, tapping screw, dan drilling screw). Pengujian geser sambungan dilakukan menggunakan Universal Testing Machine. Hasil penelitian menunjukkan bahwa sambungan dengan lag screw memiliki kapasitas geser tertinggi (14,57 kN) dan deformasi maksimum terbesar (13,7 mm) dibandingkan tapping screw dan drilling screw. Berdasarkan analisis mode keruntuhan, lag screw, tapping screw dan drilling screw mengalami mode keruntuhan IIIm. Sambungan dengan lag screw merupakan sambungan paling efektif karena menunjukkan performa struktural terbaik.
PEMETAAN KERAWANAN BANJIR DI KOTA SURAKARTA Faisal Adyaksa Ramadhan; Rintis Hadiani; Adi Yusuf Muttaqien
Jurnal Riset Rekayasa Sipil Vol 7, No 2 (2024): Maret 2024
Publisher : Civil Engineering Study Program, Engineering Faculty Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v7i2.85907

Abstract

Floods have become one of the problems occurring in the city of Surakarta. The floods are caused by the overflow of the tributaries of the Bengawan Solo River, located within the Surakarta City area. One of the strategies for flood disaster management is through flood zone mapping. In flood vulnerability mapping, hydrological analysis is conducted to determine the magnitude of the flood discharge for different return periods (Q2, Q5, Q10, Q25, and Q50) using the HSS SCS method, which will serve as input for the HEC-RAS program to simulate floods, used as determining variables in flood vulnerability mapping. The results of the flood simulation analysis indicate that the level of vulnerability in non-vulnerable areas has a flood area limit ranging from 1.05 ha to 8.93 ha, a maximum flood depth limit ranging from 0.24 m to 0.57 m, and a maximum flood velocity limit ranging from 0.06 m/sec to 0.21 m/sec. For areas with low vulnerability, the flood area limit ranges from 8.93 ha to 16.80 ha, the maximum flood depth limit ranges from 0.57 m to 0.90 m, and the maximum flood velocity limit ranges from 0.21 m/sec to 0.35 m/sec. For areas with moderate vulnerability, the flood area limit ranges from 16.80 ha to 24.68 ha, the maximum flood depth limit ranges from 0.90 m to 1.23 m, and the maximum flood velocity limit ranges from 0.35 m/sec to 0.50 m/sec. For areas with high vulnerability, the flood area limit ranges from 24.68 ha to 32.55 ha, the maximum flood depth limit ranges from 1.23 m to 1.55 m, and the maximum flood velocity limit ranges from 0.50 m/sec to 0.64 m/sec.

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