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Articles 551 Documents

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Peningkatan Kinerja Operasi Dan Pemeliharaan Jaringan Irigasi Pacal Kabupaten Bojonegoro, Jawa Timur Cynthia Rahma Dewi; Eko Andi Suryo; As’ad Munawir
Rekayasa Sipil Vol 11, No 2 (2017)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Pacal Irrigation is an infrastructure that services most agricultural areas in Bojonegoro City, East Java. Some problems has been found in this facillities such as misdistribution of water, inadequate condition of facilities, illegal oulet canals, and non conformity in operation and maintenance (OM)procedures. This study aims to determine existing condition, main affecting factors and improving strategy of operational and maintenance at the Pacal Irrigation. Primary data was used in this study gathered from questionnaires of 93 respondents and 8 experts in Irrigation Management Study Area. Descriptive analysis was used to explain the existing condition of OM performance of Pacal Irrigation. Important Performance Analysis (IPA) method was applied to determine the main priority factors affecting OM Performance. Furthermore, the SWOT method then was used to define strategies for improving OM performance of PACAL Irrigation. The results of the IPA analysis show there are 11 main prioroty factors affecting OM performance of PACAL Irrigation network. Furthermore, from SWOT Analysis it can be suggesteded that the “growth” strategy can be applied at Pacal Irrigation.

Karakteristik Antrian Kapal Dan Faktor-Faktor Yang Mempengaruhi Waktu Tunggu Kapal (Waiting Time) Di Pelabuhan Tanjung Perak Frizky Andrian Perdana; Alwafi Pujiraharjo; Indradi Wijatmiko
Rekayasa Sipil Vol 11, No 3 (2017)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Economic growth in Indonesia especially in East Java and Eastern Indonesia has caused the number of ship visits in Tanjung Perak Port to increase. These conditions resulted in a higher ship queue that will linearly cause the waiting time of the ship (waiting time) in the port which is getting longer. Therefore it is necessary to study about the average of ship waiting time, the characteristics of ship queue, the factors that affect the waiting time of the ship, the direction of improvement. This study uses the Queue Analysis Method, Multiple Regression Analysis and SWOT Analysis. The analysis shows that the average waiting time at Tanjung Perak Harbor is the longest in the northern and western emerald terminal of 46.20 hours, and the smallest is in the diamond terminal 29.94 hours and the terminal of 29 , 94 hours. From queuing characteristics, the percentage of server usage of northern and western emerald terminal terminal has exceeded the capacity of 124.44%, while the southern emerald terminal is 94.40%, Diamond Terminal is 70.56%, Multipurpose Terminal is 84.31%, and Mirah terminal 85.24%, From the simulation of North and West Jamrud Terminal requires at least 7 servers. The most influential factor on (waiting time) is the Availability of Pier (X4) of 13.25% and then the effect of the Production of Loading and Unloading (X1) of 12.11% with the regression model obtained is Y = 403.914-8.198 X1-6.551X2- 4,874 X3-6,409 X4-6,909 X5. The Strategy must be done to decrease the waiting time of ships at Tanjung Perak Port by maximizing the performance of the loading and unloading force (TKBM), transferring the vessel to dock at the surrounding ports such as Lamong Bay Terminal and Manyar BMS Gresik Terminal and improving services and document processing procedures at the port to cope with the increase in the flow of goods. Developing Surabaya's West Sailing Channel (APBS) to revitalize the Sailing Flow and harbor pools, implement correct port regulation and maximize existing guidance to anticipate the increase in ship visits.

Analisis Tingkat Risiko Proyek Pelaksanaan Pemeliharaan Jalan Untuk Meningkatkan Kinerja Mutu Proyek Jalan Di Kabupaten Malang Bowo Nyata Utama, Robertus Tri; Setyowati, Edhi Wahjuni; Harimurti, Harimurti
Rekayasa Sipil Vol 11, No 3 (2017)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

In every road maintenance project implementation there are always unpredictable risks affecting the quality of the project performance. This study aims to obtain the most dominant risks affecting the quality performance of road maintenance projects in Malang Regency using Analysis Hierarchy Process (AHP) method and Multiple Linear Regression. The AHP method was chosen to observe the highest level of the risk, while the Multiple Linear Regression method was selected to find risk events which have significant effect upon the quality degradation of the project. The results showed that the risk of material specification insufficiency reaches the highest risk level with risk factor value of 0.584, while the risking events caused by materials and human resources insufficiency is the most significant influences affecting the quality degradation of the project performance.

Pengaruh Kepadatan Dan Kadar Air Tanah Pasir Terhadap Nilai Resistivitas Pada Model Fisik Dengan Metode Geolistrik Eko Andi Suryo; Suroso Suroso; Yulvi Zaika; M. Ato’urrahman
Rekayasa Sipil Vol 10, No 3 (2016)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Untuk mencegah terjadinya bahaya kelongsoran, hal pertama yang harus dilakukan adalah penyelidikan tanah untuk mengetahui kondisi terkini dari stabilitas lereng. Bore-hole drilling adalah metode yang sering digunakan untuk mengetahui lapisan tanah. Karena metode bore hole drilling yang destructive terhadap struktur tanah, maka perlu alternatif metode non-destructive yang bisa dipakai di lereng kritis. Metode aplikasi geofisika, seperti geolistrik atau Electrical Resistivity Tomograpy (ERT) dapat diterapkan pada penyelidikan tanah lereng kritis. Penerapan metode Geolistrik ini memiliki keunggulan yaitu durasi waktu pelaksanaan yang lebih singkat serta biaya yang lebih murah. Hasil dari aplikasi ERT selanjutnya perlu diverifikasi dengan parameter tanah yang diperoleh dari tes tanah di laboratorium sesuai dengan standard yang berlaku. Peneliti ingin menyelidiki pengaruh variasi kepadatan dan kadar air tanah pasir terhadap hasil dari aplikasi Geolistrik. Seperti diketahui semakin padat tanah maka kekuatan geser tanah tersebut akan meningkat, sehingga perlu pembuatan model fisik dengan variasi kepadatan tanah dan kadar air. Kemudian dilakukan penyelidikan geolistrik untuk mendeteksi besarnya resistivitas tanah pada model fisik tersebut. Kemudian, hasil penelitian dianalisis dan dilihat bagaimana hubungan antara kepadatan dan kadar air dengan nilai resistivitas tanah pasir.

Respon Portal 3D Dengan Variasi Konfigurasi Struktur Terhadap Beban Gempa Siti Nurlina; Desy Setyowulan; Devi Nuralinah; Ahmad Badiuzzamani
Rekayasa Sipil Vol 10, No 3 (2016)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Penelitian tentang respon portal 3D dengan variasi konfigurasi struktur ini dilakukan dengan tujuan untuk mengetahui pengaruh dari variasi konfigurasi struktur portal 3D terhadap mode shape akibat beban gempa yang terjadi, mengetahui tipe kerusakan yang terjadi pada setiap bentuk konfigurasi dan mengetahui perbedaan antara analisis dan pembuatan modelisasi struktur bangunan di laboratorium. Pada penelitian ini digunakan analisis dinamis dengan menggunakan program SAP2000 serta dilakukan percobaan untuk tiga benda uji yang telah dipilih dari beberapa variasi yang telah dilakukan analisanya. Model struktur yang digunakan dalam proses analisis sebanyak 3 model, dengan variasi konfigurasi denah struktur berbentuk persegi, persegi panjang, dan segi delapan. Berdasarkan hasil analisis yang telah dilakukan, terdapat perbedaan bentuk mode shape dari setiap konfigurasi. Selain itu, kerusakan struktur secara umum terjadi pada kolom.

Perbaikan Tanah Dasar Jalan Tol Semarang – Demak Menggunakan Bahan Aditif Dan Perkuatan Kolom Stabilisasi Anindita Dwi Anggraini; Ahmad Rifa’i; Fikri Faris
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

In Semarang there is often a flood of sea water that swamp the road. This happens because the ground is lower than the water level, load-carrying capacity is deficient. Following up on this, a new road network is needed as a toll road. To accomplish the problem, it is necessary to increase the load-carrying capacity by improve the subgrade on the toll road using additive and strengthen the stabilization column. Additives used in the form of additives made of inorganic materials containing compounds of calciumchloriddihydrat with pH of 8.24 which has ion bonding energy is greater than the metal material on the surface of the soil grains. The general composition consists of carbon elements 72.78%, hydrogen 21.11%, and nitrogen 1.36%. The research was conducted on soil mix, additive material by comparison 1 gram of additive, 1 liter of water and variation of cement content like 4%, 5%, 6%, 7%. To get the optimum mix for soil improvement. Then numerical analysis by using Plaxis Software v.8.6 with variation of soil thickness and column length stabilization. Test results show that the soil is high-plasticity clay. The soil stabilization was eligible for soil compressive strength testing for layers of soil composite cement foundation of 24 kg / cm2. Soil compressive strength testing of soil stabilization is 2,47 kg/cm 2 with 7% cement and addictive. Based on numerical analysis with plaxis v 8.6 software, the deformation value in the model with 5 m thick soil stabilization and 50 m stabilization column length has met the embankment degression limit according to the PU guideline that is 20 mm for the 1st class road. For the value of road stability safety factor, eligible value 1.4.

Pengaruh Penerapan Green Retrofit Terhadap Life Cycle Cost Pada Bangunan Gedung Aulia Rahmawati; Wisnumurti Wisnumurti; Agung Murti Nugroho
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

This study aims to investigate one of the benefits of retrofitting an existing educational building in its relation to the building’s life-cycle cost. Choosing educational building as a target of green retrofit project and as an object of study for its relevance as an important part of nationwide green project is considered timely, given the fact that there hasn’t been any retrofit project in Indonesia that targets educational building despite its necessity to create sustainable environmental management of educational facilities. The improvement made to the building by the project was measured using GREENSHIP Existing Building (EB), which is thelegitimate standard of assessment for the level of energy efficiency and conservation of buildings in Indonesia. Having been retrofitted, the building was rated Silver based on GREENSHIP EB rating system, and it wasa substantial progress compared to its previously non-rated status. The project had resulted in 0.45% decrease ofthe building’s total life-cycle cost. Furthermore, it was found that green retrofitting that was particularly oriented towards Energy Efficiency and Conservation, Water Conservation as well as Indoor Health and Comfort categories could cause greater life-cycle cost reduction than retrofitting that was undertaken for the whole categories prescribed in GREENSHIP EB.

Analisis Kuat Tekan Beton Mutu Tinggi Dengan Bahan Tambah Superplastisizer Dan Limbah Las Karbit Prayuda, Hakas; Pujianto, AsÃ¢Â€Â™at
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.254 KB)

This research will discuss about the compressive strength of concrete by using superplastisizer as an addictive substance and waste of carbide weld as the admixture material of cement replacement. Through this research is expected to know the right composition to produce a concrete formula with high quality by utilizing the existing local waste dan superplastisizer (Viscocrete-10). In this study made a sample of concrete cylinders measuring 15 cm diameter with a height of 30 cm totaling 63 specimens with 7 variations with each variation made as many as 9 specimens. The compressive strength test was performed at age 7, 14 and 28 days. Through this research, the result of flowability, compressive strength and elastic modulus of each test object variation.

Kinerja Efisiensi Energi Terhadap Manajemen Biaya Operasional Gedung Dano Quinta Revana; Wisnumurti Wisnumurti; Agung Murti Nugroho
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

The concept of Green Building is one of the efforts to reduce the effects of global warming through developmental aspects. Excessive energy consumption becomes an issue of global warming and waste of operational cost in the building so that this research will conduct an assessment using GREENSHIP and SNI parameters in Building E Faculty of Administration Brawijaya University expected to know the level of "green" in energy efficiency criteria. Energy Consumption Intensity in this building is 60,65 kWH/ m2/ year. Some rooms have the use of electric power exceeding the maximum SNI power, so there needs to be a reduction of wattage bulbs and lamp replacements with LED lights that can save power 2.039,04 kWH and saving the operational cost Rp. 1.935.218,88 every month

Preloaded Reinforced Concrete Beam Stress Block Parameters : A Preliminary Approach Fachreza Akbar; Ari Wibowo; Wisnumurti Wisnumurti
Rekayasa Sipil Vol 12, No 1 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Reinforced concrete beam will have tendency to deteriorated after receiving a certain degree of load by leaving plastic strain. Although Many study of plastic strain behavior were performed to establish the behavior of concrete under cylic load such as in seismic activity or under earthquake load there are less information of preloaded concrete stress block has been reported. In this study, the stress block parameter of α re and γ re have been defined and derived from empirical model of the early and latest study of concrete behaviour under repeated loading. The result shows match behavior of the parameters value both in every unloading strain increments or concrete reloading increments with particular unloading strain. The result α re are also has been plotted and compared with the previous proposed α

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