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INDONESIA
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia
Published by Universitas Tribhuwana Tunggadewi
ISSN : -     EISSN : 2548771X     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Energy Engineering Industrial & Manufacturing Engineering
Focus and Scope of this journal are : Chemical Engineering including : bioenergy processing, environmental engineering, natural resource management, Heat and Mass Transfer, Chemical Reaction, Analytical Chemistry, Biochemistry, Designing tools and chemical processes, Chemical industry process, Computing and modeling (simulation) process, Particle and nano technology, membrane technology, esessential oil technology, and phytopharmaca, etc. Civil Engineering including : technology of construction materials, transportation system, environmental layout, concrete and wood structures, steel construction, bridge and dam construction, management of water resources and Hydrology, earthquake engineering, sanitation systems and urban drainage. eUREKA is published twice a year on Juni and December by Engineering Faculty of Universitas Tribhuwana Tunggadewi Malang
Arjuna Subject : -
Articles 160 Documents
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STUDI OPTIMASI WAKTU DAN BIAYA PADA PROYEK KONSTRUKSI (STUDI KASUS PROYEK PEMBANGUNAN WATER PARK TIRTASANI ROYAL RESORT KARANGPLOSO – MALANG) KAKARUA, YOAKIM; Rasidi, Nawir
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Execution a project generally consist of some or many the activity need such resource fund and time can in the form of manpower, appliances, materialss and others. Besides ability provide resource, is also needed by ability to plan, to organization, executing and observing each; every activity of project is so that obtained by result of optimal is matching with the one which expected. Date’s which is needed in have of this skripsin is obtained date’s from outside the project of mentioned as data of skunder, and obtained datas of project mentioned as primary date. Date Processing which done/conducted] by using equipments of computer, program assist Microsoft Office Excel 2007 and MS project 2003. Expense of development is the expense of which included in bond which have been agreed on with which is raised by contractor at the time of selling. For that the expense of development which have been agreed by in bond development of WATER PARK Tirtasani is Rp 3,024,077,117.00, do not the including PPN. Result of scheduling optimasi of normal durasi 168 day plan execution, project of conducted by conducive to be construction of acceleration and got by optimal time is 134,4 day. conducted by addition of office hours or overtime counted 2 office hours of normal time 8 clock/day becoming clock/day, got by the expense of optimum equal to Rp 2.419.261.694. Keywords : Time, Expense, MS project 2003, Planning ABSTRAK Pelaksanaan suatu proyek umumnya terdiri atas beberapa atau banyak aktifitas tersebut memerlukan waktu dan dana sumber daya yang dimaksud dapat berupa tenaga manusia, alat-alat, bahan-bahan dan lain-lain. Selain kemampuan menyediakan sumber daya, juga diperlukan kemampuan untuk merencanakan, mengorganisasikan, melaksanakan dan mengawasi setiap kegiatan proyek sehingga diperoleh hasil yang optimal sesuai dengan yang diharapkan. Data-data yang diperlukan dalam penyelesaikan skripsin ini adalah data-data yang diperoleh dari luar proyek tersebut sebagai data skunder, dan data-data yang diperoleh dari proyek tersebut sebagai data primer. Pengolahan data yang dilakukan dengan menggunakan peralatan computer, program bantu Microsoft Office Excel 2007 dan MS project 2003. Biaya pembangunan adalah biaya yang termuat dalam kontrak yang telah disepakati bersama yang diajukan kontraktor pada saat prnawaran. Untuk itu biaya pembangunan yang telah disetujui dalam kontrak pembangunan WATER PARK Tirtasani adalah Rp 3,024,077,117.00, tidak termasuk PPn. Hasil optimasi penjadwalan dari durasi normal 168 hari rencana pelaksanaan, proyek konstruksi dimungkinkan dilakukan percepatan dan didapat waktu yang optimal adalah 134,4 hari. Dengan dilakukan penambahan jam kerja atau lembur sebanyak 2 jam kerja dari waktu normal (8 jam kerja/hari) menjadi 10 jam kerja/hari, didapat biaya yang optimum sebesar Rp 2.419.261.694. Kata Kunci : Waktu, Biaya, MS project 2003, Perencanaan.
POTENSI TEKNOLOGI ASAP CAIR TEMPURUNG KELAPA TERHADAP KEAMANAN PANGAN Longa Rasi, Antonius Juandri; Seda, Yulius Prianto; Abrina Anggraini, Sinar Perbawani
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Liquid smoke is a chemical derived from the condensation of smoke decomposition of organic compounds in the process pirolosis. Liquid smoke contains several components that support the properties and functional. Many liquid smoke contains a number of chemical compounds that have the potential as a raw material of food preservatives. Liquid smoke used for food preservative must be free of dangerous compounds such as polycyclic aromatic hydrocarbons. Based on the quantity, liquid smoke coconut shell can produce the greatest yiel data temperature of 400℃ to produce a yield of 11.83 (%w/w). Based on the quality, liquid smoke coconut shell has a very good quality at a temperature of 400℃ with a total yield of 11.83 (%w/w), a pH value of 1.23, and a phenol content of 4.63%. This shows that the liquid smoke has excellent antibacterial properties, liquid smoke plays an important roleas a giver of good aroma and antioxidant as well as a distinctive flavor in food products. Liquid smoke coconut shell can also be used as a preservative safe alternative to konsumsi. This is evidenced by the detection of compound benzo (a) pyrene in smoked grade 1 Kata kunci : asap cair, proses pirolisis, benzo (a) pirene
PERENCANAAN PERKUATAN DINDING PENAHAN PADA BANTARAN SUNGAI KONTO DI KECAMATAN PUJON Supriyanto, Maradona; Suhudi, Suhudi; Sulistyani, Kiki Frida
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Dinding penahan tanah berfungsi untuk menahan tanah serta mencegahnya dari bahaya kelongsoran. Baik akibat beban air hujan, berat tanah itu sendiri maupun akibat beban yang bekerja di atasnya. Pada saat ini, konstruksi dinding penahan tanah sangat sering digunakan dalam pekerjaan sipil walaupun ternyata konstruksi dinding penahan tanah sudah cukup lama dikenal di dunia. Kelongsoran yang terjadi di bantaran sungai konto jln. Abd.Manan Wijaya Kecamatan Pujon di sebabkan oleh dimensi dinding penahan yang terlalu kecil sehingga tidak stabil terhadap faktor keamanan (fs), nilai faktor keamanan yang di tinjau adalah faktor keamanan terhadap daya dukung tanah, gaya geser dan stabilitas terhadap gaya guling. Tujuan dari penelitian ini adalah untuk menganalisa penyebab keruntuhan dinding penahan tanah dan merencanakan kembali dinding penahan tanah yang sudah runtuh. Dinding penahan yang ada tidak stabil terhadap gaya geser yaitu 1,28 < 1,5 (tidak aman). Perencanan kembali dinding penahan tanah dengan menggunakan jenis dinding penahan gravitasi dengan sisi belakang tegak karena jenis ini cocok untuk dinding penahan yang tinggi. Dimensi dinding stabilitas terhadap geser : 1,67 > 1,5 (aman) dan stabil terhadap guling : 3,9 > 1,5 (aman). Kata Kunci : Dinding penahan tanah, Longsoran, Dimensi, stabilitas dinding penahan.
Perbandingan Metode Distilasi Minyak Atsiri Daun Kayu Putih Menggunakan Hydrodistillation dan Steam Distillation Victor, Markulius; Mbaru, Maria Erenta; Proborini, Wahyu Diah; Fitri, Ayu Chandra Kartika
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 2, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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ABSTRAK Penelitian ini bertujuan untuk membandingkan kualitas minyak atsiri daun eukaliptus dengan melakukan analisis indeks bias, Spesifik Gravity (sg) dan GC-MS untuk menentukan kandungan senyawa kimia dan menentukan hasil dari minyak atsiri daun eukaliptus berdasarkan volume yang dihasilkan. Hasil penelitian ini menunjukkan bahwa ekstraksi menggunakan metode Steam-distilasi 10 kg daun kayu putih menghasilkan minyak atsiri sebanyak 31 ml sedangkan dalam metode Hidrodistilasi 10 kg daun kayu putih menghasilkan minyak atsiri sebanyak 25 ml . Hasil analisis indeks bias minyak dari metode steam-distillation adalah 1,4602 sedangkan untuk metode hidrodistilasi indeks biasnya adalah 1,4585. Hasil analisis gravitasi spesifik pada temperatur 200c untuk minyak yang dihasilkan dari mtode Steam-distilasi adalah 0,899 sedangkan minyak dari metode Hidrodistilasi adalah 0,904. Analisis GC-MS dari minyak atsiri yang dihasilkan oleh metode steam-distillation menunjukkan 7 komponen kimia yang memiliki kelimpahan terbesar di mana kelimpahan tertinggi komponen sineol (59,77%) pada 6,682 menit waktu retensi diidentifikasi pada puncak 7 dan 10. Sementara dalam metode Hidrodistilasi terdapat 10 komponen kimia dengan kelimpahan terbesar dimana komponen sineol memiliki kelimpahan tertinggi yaitu 68,22% pada waktu retensi 6,664 menit yang diidentifikasi pada puncak 7,9 dan 11. Kata kunci : minyak daun eucalyptus; distilasi uap; hidrodistilasi; rendemen; GC-MS ABSTRACT The purpose of this research was to compare the quality of essential oil of eucalyptus leaves by performing refractive index analysis,Specific Gravity (sg) and GC-MS to determine the chemical compound content and determine the yield of volatile oil of eucalyptus leaves based on the volume produced. The results of this study indicate that the extraction using Steam-distillation method of 10 kg of eucalyptus leaves produced atsiri oil as much as 31 ml whereas in the method of Hydrodistillation of 10 kg of eucalyptus leaves produced oil of essential oil as much as 25 ml. The result of oil refractive index analysis from steam-distillation method is 1.4602 while for Hydrodistillation method the refractive index is 1.4585. The result of specific gravity analysis at temperature 200c for oil produced from Steam-distillation mtode is 0,899 while oil from Hydrodistillation method is 0,904. The GC-MS analysis of volatile oil produced by the steam-distillation method showed 7 chemical components having the greatest abundance in which the highest abundance of the sineol component (59.77%) at 6.682 min retention time was identified at peak 7 and 10. While in Hydrodistillation method there are 10 chemical components with the largest abundance where the sineol component has the highest abundance that is 68,22% at retention time 6,664 minutes which is identified at peak 7,9 and 11. Keywords : eucalyptus leaves oil; steam-distillation; hydrodistillation; yield; GC-MS
PENGARUH UPAH KERJA DAN PERILAKU PEKERJA TERHA PRODUKTIVITAS PEMASANGAN BATU BATA (Studi kasus pada pembangunan gedung Ruko Gajayana) Mengun, Emanuel; Yurnalisdel, Yurnalisdel
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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This research aim to to know influence which is significant between labourage and behavior of worker to productivity installation of stone in execution of project development of Ruko Gajayana. Data result of research analysed by using SPSS software which is application constructively computer of Windows Office 2007. research of influence of labourage and behavior of worker to productivity installation of brick which in test with analysis of regresi doubled in knowing that Variable of X1 have coefficient of regresi equal to 0.455 and obtained by statisitic test t equal to 1.066 with equal to 0.305. Statistical value of test | thitung| the smaller than ttabel ( 1.066 < 2.145) as well as bigger than = 0.05. This examination indicate that H0 accepted. X1 (labourage) dont have an effect on signifikan to Y ( work productivity). Variable of X2 have coefficient of regresi equal to 0.955 and obtained by statisitik test t equal to 1.920 with signifikansi equal to 0.075. Statistical value of test | thitung| the smaller than ttabel ( 1.920 < 2.145) as well as bigger than = 0.05. This examination indicate that H0 accepted. X2 (behavioral of worker) do not have an effect on signifikan to Y ( work productivity). All free variable [do] not have an effect on signifikan by parsial to Y but having an effect on at a time. Variable of X2 ( behavioral [of] worker) representing variable owning coefficient of terstandarisasi biggest Beta that is 0.459. This matter show variable of Y ( work productivity) more influenced by variable of X2 ( behavioral [of] worker) compared to variable of X1 ( worker fee) which only having coefficient equal to 0.255. Coefficient had by each variable have positive sign [to], with the meaning if value [at] variable of X1 mount, value [at] variable of Y also mount. Conversely if value [at] variable of X1 downhill, hence value [at] downhill Y also, by simultan / at a time, variable of X1 and of X2 have an effect on signifikan to variable Y. So that can be concluded that X1 ( labourage) and X2 ( behavioral [of] worker) having an effect on signifikan to Y ( work productivity). Keyword : Labourage, Behavioral of Worker, Productivity Worker ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh yang signifikan antara upah kerja dan perilaku pekerja terhadap produktivitas pemasangan batu dalam pelaksanaan proyek pembangunan Ruko Gajayana di Jln. Gajayana, kecamatan lowokwaru Malang. Data hasil penelitian dianalisis dengan menggunakan software SPSS yang diaplikasikan dengan bantuan komputer Windows Offic 2007. Berdasarkan hasil penelitian pengaruh upah kerja dan perilaku pekerja terhadap produktivitas pemasangan batu bata yang di uji dengan analisis regresi berganda di ketahui bahwa Variabel X1 memiliki koefisien regresi sebesar 0.455 dan diperoleh statisitik uji t sebesar 1.066 dengan signifikansi sebesar 0.305. Nilai statistik uji |thitung| tersebut lebih kecil daripada ttabel (1.066 < 2.145) dan juga signifikan lebih besar daripada α = 0.05. Pengujian ini menunjukkan bahwa H0 diterima. X1 (upah kerja) tidak berpengaruh signifikan terhadap Y (produktivitas kerja). Variabel X2 memiliki koefisien regresi sebesar 0.955 dan diperoleh statisitik uji t sebesar 1.920 dengan signifikansi sebesar 0.075. Nilai statistik uji |thitung| tersebut lebih kecil daripada ttabel (1.920 < 2.145) dan juga signifikan lebih besar daripada α= 0.05. Pengujian ini menunjukkan bahwa H0 diterima. X2 (perilaku pekerja) tidak berpengaruh signifikan terhadap Y (produktivitas kerja). Semua variabel bebas tidak berpengaruh signifikan secara parsial terhadap Y tetapi berpengaruh secara serentak. Variabel X2 (perilaku pekerja) merupakan variabel yang memiliki koefisien terstandarisasi Beta paling besar yaitu 0.459. Hal ini menunjukkan variabel Y (produktivitas kerja) lebih banyak dipengaruhi oleh variabel X2 (perilaku pekerja) dibandingkan variabel X1 (upah pekerja) yang hanya mempunyai koefisien sebesar 0.255. Koefisien yang dimiliki oleh masing-masing variabel bertanda positif, yang artinya jika nilai pada variabel X1 meningkat, nilai pada variabel Y juga meningkat. Dan sebaliknya jika nilai pada variabel X1 menurun, maka nilai pada Y juga menurun, secara simultan/serentak, variabel X1 dan X2 berpengaruh signifikan terhadap variabel Y. Sehingga dapat disimpulkan bahwa X1 (upah kerja) dan X2 (perilaku pekerja) berpengaruh signifikan terhadap Y (produktivitas kerja). Kata kunci :Upah Kerja, Perilaku Pekerja, Produktivitas Pekerja
ANALISA KAPASITAS TINGKAT PELAYANAN LALU LINTAS PADA PEREMPATAN JALAN RAYA LANGSEP KELURAHAN TANJUNGREJO KOTA MALANG Arnoldus Moruk, Dionisius; Pandulu, Galih Damar; Rahma, Pamela Dinar
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Malang is the second major city after the city of Surabaya in East Java with tourist potential and its economy is growing. The activities such as malls, markets, parks, campuses, tourist areas, office activities and other activities are factors that make this street has a solid activity that resulted in the problem - the problem of transport one road congestion resulting in decreased capacity, In a survey or research used data collection methods with Manual Method Counter at the intersection of Highway langsep Village Tanjungrejo Malang for the purpose of calculating the value of traffic volume, capacity and level of service is to conduct a survey for 7 days and two weeks starting at 6:00 pm - 22:00 pm) and the results of the survey obtained data on the volume of traffic, road geometric data were then analyzed using the Indonesian highway Capacity Manual (MKJI) 1997. Based on the analysis, the volume of peak hour at the intersection of highways langsep is 3554.9 smp / hour , capacity of 2889.56 smp / hour and the level of service (LOS) is F. Keywords: Analysis, capacity, degree of saturation and analysis service levels.
PENGARUH PENAMBAHAN COOLING TOWER TERHADAP PENURUNAN SUHU AIR BAK PENAMPUNG PADA PROSES DESTILASI UAP DAUN SEREH DAPUR (CymbopogonCitratus) Ome, Delfinsianus
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Heat exchange causes cold water to change temperature where the cooling water temperature to rise because the resulting heat is carried by a fluid which is absorbed by the water. To overcome that we need some cooling to reduce the temperature of the water is by using a cooling tower. The goal is to find out and determine "the effect of adding a cooling tower to decrease the water temperature in the cooling bath steam distillation process of (Cymbopogon citratus) leaves ". Measure the temperature every 30 minutes after the distillate water dripping, and the process of repeated measurements simultaneously on a water bath cooler, condenser, cooling tower (cooling tower) and the distillate water. The process of measuring the temperature using a cooling tower with a water tank initial temperature was 270C with the old process for 3 hours. From this research can be concluded that: 1)At the time of the process without using an intermediary Cooling Tower For media water cooler during the 3 hour difference between 2-30C temperature rise to a maximum temperature ranging between 41-430C. 2) Cooling Tower Process using water as a cooling medium for 3 hours process, the maximum temperature ranges between 31-340C and the difference in temperature rise between 1-20C. 3)Comparison of the temperature of the process without the use of Cooling Tower and Cooling Tower using cooling water as its medium very different temperature difference is 34 : 430C with a temperature difference of 90C without using the Cooling Tower to use the Cooling Tower. Keywords: Cooling Tower, temperature, distillation, Cymbopogon citratus
Studi Kelayakan Pasir Handel dan Krikil dari Kali Wae Longge di Kabupaten Manggarai Barat Sebagai Salah Satu Material Beton Mutu Fc 19,3 MPA Gungto, Benediktus; Ningrum, Diana; Rasidi, Nawir
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 2, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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ABSTRAK Handel dan Wae Longge adalah lokasi tambang dan juga pemasok bahan bangunan terbesar di Kabupaten Manggarai Barat, yang sebagai bahan beton. Agregat harus memenuhi berbagai persyaratan teknis, tetapi bahan dari Handel dan Kali Wae Longge tidak diketahui kualitas atau kelayakannya. Penelitian ini dilakukan di laboratorium dengan beton kubus 15 x 15 cm untuk mengetahui kekuatan tekan benda uji beton dan silinder dengan ukuran 15 x 30 cm untuk kekuatan tarik beton. Dimana untuk kekuatan tekan beton dibuat 9 buah benda uji dan kuat tarik dari beton 7 lembar spesimen dengan perbandingan campuran 1 semen: 1,88 Pasir: 2,82 Kerikil. Hasil pengujian pada agregat halus Handel menunjukkan bahwa pasir memasuki gradasi zona I, kadar air adalah 4,61%, bulk density 2,31, berat jenis SSD 2,42, penyerapan 4,63%, Mbb3 3,04, kandungan berat 1,29, dan agregat kasar dari waktu Wae Longge menunjukkan bahwa 1,35 kadar air, bulk density 2,1, gravitasi spesifik dari SSD 2,19, penyerapan 4,64%, MHB 7,99, berat konten 1,33. Kuat tekan beton pada 7 hari diubah menjadi 28 hari dengan 26,39 N / mm², kekuatan tarik 4,52 N / mm². Kata kunci: Agregat Kwaliats; Pers Kuat dan Tarik; Manngarai Barat. ABSTRACT Handel and Wae Longge times is the location of mine and also the largest building material supplier in Manggarai Barat regency, which is as a concrete material. Aggregates must meet various technical requirements, but the material from Handel and Kali Wae Longge is not known the quality or feasibility. This research was conducted in laboratory with concrete cube 15 x 15 cm to know the compressive strength of concrete and cylindrical test object with size 15 x 30 cm for tensile strength of concrete. Where for the compressive strength of concrete made 9 pieces of test specimens and tensile strength of concrete 7 pieces of specimens with Comparison of mixture of 1 cement: 1.88 Sand: 2.82 Gravel. The test results on the fine aggregate of Handel showed that sand entered the gradation of zone I, moisture content was 4.61%, bulk density 2.31, specific gravity of SSD 2.42, 4.63% absorption, Mbb3 3.04, weight content of 1.29, and coarse aggregate from time Wae Longge showed that 1.35 moisture content, bulk density 2.1, specific gravity of SSD 2.19, absorption of 4.64%, MHB 7.99, weight of content 1.33. Compressive strength of concrete at 7 days is converted to 28 days by 26.39 N / mm², tensile strength of 4.52 N / mm². Keywords : Aggregate Kwaliats; Strong Press and Tensile; Manngarai Barat.
Analisa Kapasitas dan Tingkat Kinerja Simpang Bersinyal (Studi Kasus Simpang Tiga Purwosari Kabupaten Pasuruan) Syaikhu, Muhammad; Widodo, Esti; Arifianto, Andi Kristafi
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Signaled Purwosari T-junction Pasuruan is one of the intersections in Pasuruan with moderately crowded traffic as the main road connecting Surabaya - Malang and Pasuruan - Malang. Its current status requires an evaluation and a performance optimization. The primary data used for the analysis was obtained through field surveys, while the performance analysis using MKJI 1997 methods. Based on the final results of the analysis can be concluded, the level of performance intersection experiencing saturation and congestion, especially the direction from Surabaya to Malang. To obtain optimal performance of the intersection, do some alternative solutions changing light signal cycle and adding approached width. Alternative lights signal cycle change are the best solution in terms of cost because it is easy and fast, compared to adding approached width. Keywords: Optimization, signaled intersection, MKJI ABSTRAK Simpang Tiga Purwosari, Kabupaten Pasuruan berupa simpang bersinyal, merupakan salah satu persimpangan di wilayah Kabupaten Pasuruan yang tingkat arusnya ramai lancar karena merupakan jalan penghubung utama Surabaya - Malang dan Pasuruan - Malang. Tujuan penelitian ini adalah untuk mengevaluasi efektifitas dan tingkat kinerja simpang bersinyal pada simpang tiga Purwosari Kabupaten Pasuruan dan memberikan alternatif pengaturan simpang yang lebih efektif terutama pada hari libur. Data primer yang dipergunakan untuk analisa diperoleh melalui survai lapangan, sedangkan analisa kinerja simpang menggunakan metode Manual Kapasitas Jalan Indonesia (MKJI) 1997. Berdasarkan hasil akhir analisa MKJI dapat disimpulkan tingkat kinerja simpang mengalami kejenuhan dan kemacetan terutama arah dari Surabaya menuju Malang. Untuk memperoleh kinerja simpang yang optimal, dilakukan beberapa alternatif solusi berupa perubahan siklus lampu sinyal dan perubahan lebar pendekat. Alternatif perubahan siklus lampu sinyal adalah alternatif solusi terbaik apabila ditinjau dari segi biaya karena mudah dan cepat, dibandingkan melakukan penambahan lebar pendekat. Kata kunci : Optimalisasi, Simpang Bersinyal, MKJI
Design Retaining Wall Pada Sungai Weybolar Kabupaten Maluku Tenggara Barat Kdise, Saul Fredrik Enricko; Suhudi, Suhudi; sulistyani, kiki frida
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Land is an important aspect in the planning of construction. Because the land has the standing of a building. Therefore, it is important to take into account the stability of the soil. One of the ways used to control the stability of the ground so as nor to experience sliding is to build a retaining wall. Planning retaining wall is located on the Weybolar River, West Southeast Maluku District and located on seismic zone 5. On this plan, the data used comes from the Public Works Department of Mining and Energy, West Southeast Maluku District. The planned retaining wall is a kind of gravity. So this building can function properly, then the stability of the building should also be good. Therefore, the author tries to analyze the stability of the retaining wall against the danger of rolling and sliding with normal water level condition without the earthquake, with the earthquake and flood water level condition without the earthquake, and with earthquake. Analyze using the Rankine formula. The result is SFsliding 1,77 > 1,5 and 1,38 > 1,2, SFbolters 2,5 > 1,5 and 1,2 ≥ 1,2 (for normal condition without and with the earthquake) and SFsliding 1,93 > 1,5 and 1,38 > 1,2, SFbolters 2,97 > 1,5 and 1,56 > 1,2 (for flood condition without and with the earthquake), it turns out safely. This writing is also included in the calculation of the total budget plan is Rp. 191.798.000 Keyword: Weybolar River, Retaining wall, Stability.

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