bluuebunny/crossref_metadata_2025 huggingface dataset:
EVALUASI DAN PERENCANAAN ULANG DESAIN GEOMETRIK JALAN BERDASARKAN STANDART BINA MARGA PADA RUAS JALAN DADAPREJO KOTA BATU
Authors: Subkhan M. Fajar
Published: April 2021

Jalan memiliki peranan penting dalam mendukung distribusi barang dan jasa, sebagai sarana penghubung antara daerah yang satu dengan daerah yang lain. Jalan yang baik, aman dan nyaman akan terpenuhi jika jalan direncanakan berdasarkan persyaratan teknis geometrik jalan raya. Jika terdapat kesalahan dalam perencanaan dan persyaratan teknis geometric, maka sisi keamanan dan kenyamanan jalan tidak akan didapatkan. Hal ini yang ditemui pada ruas jalan Dadaprejo Kota Batu, jalan yang berupa tanjakan sekaligus tikungan, membuat para pengendara terganggu, sehingga tidak jarang di ruas jalan tersebut terjadi kecelakaan. Berdasarkan dari hasil perhitungan dengan menggunakan data eksisiting, diperoleh bahwa pada tikungan pada ruas jalan Dadaprejo Kab. Malang memenuhi persyaratan untuk diterapkan desain alinyemen horizontal tipe Spiral-Circle-Spiral (SCS) dengan melakukan perubahan/penyesuaian terhadap radius lengkung yaitu R minimum sebesar 182,082 m dengan R Rencana sebesar 200 m, dari besaran radius lengkung semula yang hanya sebesar 155,5 meter. Dilakukan adanya penambahan lebar pada daerah tikungan sehingga dapat meningkatkan tingkat pelayanan dan  kenyamanan pada jalan tersebut. diperlukan penambahan lebar tikungan sebesar 1,880 m. Dengan menerapkan kecepatan kendaraan sebesar 60 km/jam, dengan data nilai gradient eksisiting sebesar g1 = 0.736 % dan g2 = 0.491%, maka diperoleh nilai LV (Panjang Lengkung Vertikal) berdasarkan tingkat keluwesan sebesar 36 meter. Kata Kunci: jalan, geometrik, alinyemen horizontal, alinyemen vertikal
APLIKASI RSAP 2019 PADA ANALISIS BEBAN GEMPA STATIK EKIVALEN BERDASARKAN SNI 1726-2012
Authors: , Wahiddin
Published: April 2021

Prosedur analisis gempa menurut SNI 1726-2012 diklasifikasi menjadi Analisa statik (Analisa gaya lateral ekivalen) dan analisis dinamik (analisa spektrum respon ragam dan prosedur riwayat respon seismik). Pedoman perencanaan gempa SNI 1726-2012 mengacu secara normatif kepada ASCE 7-10 yang juga digunakan sebagai salah satu code untuk analisis gempa pada software aplikasi Robot Structural Analysis Professional (RSAP) 2019. Hasil analisis gaya lateral ekivalen gempa secara manual menunjukkan nilai yang sama dengan output RSAP 2019. Dengan demikian aplikasi tersebut dapat digunakan untuk mempercepat proses analisis gaya lateral gempa ekivalen. Selain itu dengan menggunakan aplikasi tersebut maka hasil analisis gaya lateral ekivalen yang diperoleh sesuai dengan SNI 1726-2012. Kata Kunci: analisis beban statik ekivalen, RSAP 2019
PROJECT PLANNING PEMBANGUNAN PROYEK JALAN PENGHUBUNG PENYINGGAHAN–MUARA PAHU KUTAI BARAT PROVINSI KALIMANTAN TIMUR
Authors: Joko Setiono Yanuar Komarudi, Moch. Khamim,
Published: April 2021

7.8-km Penyinggahan - Muara Pahu Connecting Road Kutai Barat experienced delays. The purpose of this thesis is to anticipate the delays by making an alternative project planning consisting of a site layout, a cost estimate, an implementation method, a schedule, quality management, and safety, health and environment  (SHE) planning.The required data were of the existing site layout of the project, shop drawings, cost and estimate, work and material unit price of Kutai Barat 2016. MS Project 2007 was applied for scheduling, Autocad 2007 for drawing the site layout, MS Excel for estimating.The planning results in (1) an efficient site layout including a direction kit 3.5km from project location; (2) an implementation method by forwarding critical works like mobilization;(3) 240 calendar days; (4) at Rp._48,257,108,000.00 (5) a quality management system by inspection and testing each stage of work; (6) planning SHE referring to the aspects of SHE and identifying the risks referring to Risk Assessment Matrix (RAM) for each work . Keywords: site layout, implementation method, cost estimate, scheduling, quality  management,  SHE
ANALISIS KELAYAKAN INVESTASI PEMBANGUNAN READY MIX PLANT (STUDI KASUS PT. X DI JAWA TIMUR)
Authors: Fadjar Purnomo Wilda Itatul Izza, Susapto,
Published: April 2021

PT. X will built a 3,000-m2 ready mix plant able to demand of X-Y highway contruction project. The built was planned in 3 alternative site: in Gempol—72.6km from the project site, in Purwosari—44.6km from project site, and in Singosari—53km from project site . The purpose of this study is: 1) to determine investment feasibility by technical aspect of each alternative site; 2) to determine investment feasibility by financial aspect based on feasibility parameters; 3) to determine the level of sensitivity of financial feasibilty by seeing the increase of materials and operational costs, the decrease of selling price and product demand.Technical feasibility was analyzed based on the result of questionnaires by calculating the percentage of each variable such as materials; man power; equipment; transportation; provision of water, electricity, and telephone line; and circumstances of social, environtment, community. The percantage of variable was of influential factor to choose the site by ranking method. Financial feasibility resulted from the cost of each site was analyzed based on feasibility parameter of Net Present Value (NPV), Benefit Cost Ratio (BCR), Internal Rate of Return (IRR), and Payback Period (PP). The last analysis was the sensitivity one to determine the level of sensitivity by seeing the increase of materials and operational costs, the decrease of selling price and product demand.The result of investment feasibility by technical aspect is feasible in Purwosari, Pasuruan District with a close range of raw materials; adequate availability of man power; adequate equipment; adequate transportation facilities; provision of water, electricity, and telephone lines; supporting from social, environtment, and community. The investment feasibility is financially feasible at NPV = IDR7,075,213,700; BCR = 1.047; IRR = 64.875%, and PP = 1,13 year. The result of sensitivity analysis shows that the PT. X is still able to adjust the 1%-8% tollerable increasing materials cost, 1%-7% increasing operational cost, 1%-6% decreasing selling price, and 1%-6% decreasing product demand. Keywords: BCR, feasibility, investment, IRR, NPV, PP, ready mix plant, sensitivity.
STUDI PERAMBATAN KESALAHAN SISTEMATIS LUAS LAHAN PARKIR KAMPUS MENGGUNAKAN PENDEKATAN LUAS SEGITIGA SEMBARANG
Authors: Supratikno Hendro , Premana David
Published: April 2021

Parking is a condition of not moving a vehicle that is temporary because it was abandoned by the driver. Included in the definition of parking is every vehicle that stops at certain places whether stated by traffic signs or not, and not solely for the benefit of raising and / or lowering people and / or goods.Campus 3 Lumajang State Community Academy has facilities and infrastructure prepared by the Lumajang Regency government. However, the parking lots provided cannot accommodate vehicles optimally because of the ratio of the number of vehicles and the area of the parking area that is not appropriate. This is because the area of the parking lot is not analyzed by data error when measuring.Each measurement data is assumed to have errors both systematic errors, random errors, and large errors (blunders), so that in the measurement of parking lots certainly there are errors. From this the authors intend to conduct research to find out how the propagation of systematic errors and the large systematic errors of the area of campus parking lot 3 Lumajang Community Academy.The methods used in this study include preparing materials and tools, making land sketches, decomposing them, determining distances using theodolite, determining land area equations, and finding systematic error propagation. So that the final goal in this study is to find large systematic errors in the parking area of Campus 3 of the Lumajang State Community Academy
MENINGKATKAN NILAI CBR TANAH SUB-GRADE DENGAN STABILISASI TANAH KAPUR
Authors: Sholeh Moch , Yunaefi Yunaefi
Published: April 2021

Poor soil properties and disadvantage when used as the basis of a building or road construction, including high plasticity, low shear strength, large volume or density changes and large shrinkage potential. Various methods are used to improve the strength of expansive clay soils, including by adding chemicals (chemical stabilization). Soil improvement that has been done is to mix the soil with lime, but only to review the dry density (γd). The purpose of this study is to explain the effect of adding lime to the soil on increasing CBR values, swelling, and knowing the optimum lime percentage in order to obtain maximum CBR and minimum swelling values. The results of the original soil swelling test showed a value of 9.14%, with the addition of lime percentage the swelling value showed a decrease. From the results of the addition of lime percentage showed the greatest decrease occurred in the addition of lime by 12% that is equal to 70.35%. So it can be concluded with the addition of lime will improve the original soil because it can reduce the value of swelling
PERENCANAAN ULANG BANGUNAN PENGAMBILAN BERTIPE MORNING GLORY MENGGUNAKAN PONDASI BORED PILE PADA BENDUNGAN LOGUNG
Authors: Reiza Moch. Suaib , Suhardono Agus , Manzra Surati Musa Pranadesta
Published: April 2021

The existing square tower of intake has 1,397.57m3 volume and using shallow foundation Logung Dam with its weight stability will cause inefficient structures and potential to earthquake force effect. It is necessary to have an alternative planning of the intake tower. The authors intends to redesign the intake with morning glory type and used bored pile; to find out the position of intake tower, dimension, reinforcement, duration, cost estimate, and to compare the redesign.The required data were of topographic map, irrigation, and raw water discharge, bearing capacity, and work unit price analysis of project 2016. Manning Method was applied to find out the dimension; Shell Slab Method with Column Approach to calculate the structure of the intake tower, and Skempton Method to calculate bearing capacity. The redesign results in the position of ∅ 1.75-m intake tower on conduit channel with 728,08 m3 volume; the dominant load of  operational-earthquake combination with different values; D22-200 steel bar for y-direction, D19-150 for x-direction on conduit channel, D19-150 for x,y-direction on intake tower segment 1, D16-150 for x,y-direction on intake tower segment 2, and D13-150 for x,y-direction on intake tower segment 3; on 105 workdays; at  a total cost of IDR 2,327,806,700 with 40.64 % efficiency cost.
PENGARUH PERUBAHAN DEBIT TERHADAP ANGKUTAN SEDIMEN PADA AMBANG GERIGI
Authors: Harsanti, ST., MT. Winda - , - Suhartono - , Utoyo Suselo
Published: April 2021

Gerigi weir was a modification of jigsaw weir, which the difference was in direction of curves. On jigsaw weir the curves were horizontally, but in gerigi weir the curves were vertically. The aim of this modification was sediment in upstream of weir could pass at certain speed of water. This research utilized open channel model. From this research would be known the possibility of gerigi weir in passing the sediment. Sharp weir would be used too as a comparison in flowing the sediment. In this research, some of different discharges were be used. Based on the observation, variation of the height of sediment on gerigi weir was more variable than on sharp weir. Ability to transport the sediment on gerigi weir was better than sharp weir.               Keywords: gerigi weir, open channel flow, sediment
ANALISIS GIRDER PRATEGANG TERHADAP BEBAN PELAKSANAAN ANTARA METODE KONVENSIONAL DAN INOVATIF
Authors: Rochman Taufiq , - Sudarmanto , Umam Fifil
Published: April 2021

Implementation method plays a vital role in the world of construction because it is related directly to the project scheduling. In apply on implementation method, both sefety factor and effectiveness of work must be identified. The purpose of the analysis is to determine the behavior of the girder of a bridge implemented using innovative methods and to determine the safety factor during the implementation. The required data were the height of girder is 2.1m and width 0.7m. Referred to SNI 1725 Loading for bridges, and controlling structures reffered to SNI T-12-2004 (Concrete Structure Planning for Bridges). The analysis began by determining the geometry dimensions of the girder, STAADPro software was used for modelling and Microsoft Excel was for analyzing. The results of the analysis show that innovative method is safe to implement, the stresses that occur do not exceed the allowable stress; the safety factor shows all numbers more than 1, indicating if innovative method is safe. Keywords:Innovative modeling, Launching girder, Safe implementation, Safety factor
KUAT TEKAN SELF COMPACTING CONCRETE MENGGUNAKAN GROUND GRANULATED BLAST FURNACE SLAG
Authors: Susilowati Anni , Pratikto Pratikto , Praditya Dennis Yudha , Wijayanto Kusno
Published: April 2021

Self Compacting Concrete (SCC) as one type of concrete that is mostly used in building construction has good workability and can be obtained by adding filler instead of cement. Ground Granulated Blast Furnace Slag (GGBFS) has a chemical composition similar to the content in cement. Therefore, the study of the use of GGBFS was used as a partial substitute for cement in the SCC to examine the influences and quality of GGBFS on fresh concrete and to obtain SCC with the best compressive strength. This research method uses an experimental method by making SCC concrete specimens with an initial fas of 0.4 according to ACI 211.4R-93. The specimens were worked using GGBFS levels of 0%, until 80%, and using 1,4% superplasticizer, and 2% accelerator by weight of cement. The use of GGBFS at SCC can increase the value of compressive strength of about 4,27%-25,64 compared to SCC without using GGBFS. The resulted are known that GGBFS can influence compression strength. Based on the testing of fresh and hard concrete, it concluded that the best quality of SCC used 20% of GGBFS.
ANALISIS ALIRAN BALIK (BACKWATER) PADA AMBANG GERIGI
Authors: Harsanti, ST., MT Winda , Efendi Medi , Riskijah Sitti Safiatus
Published: April 2021

Gerigi weir is a modificated jigsaw weir which can hold water flow to gain higher water level. This water raising happens in upstream of the weir until certain length to reach normal depth. This research uses square open channel model with slope as an independent variable. In this research uses various slope from 1‰ to 5‰ for eight different discharges. The aim of this research is to find the impact of slope for backwater length using Direct Step Method. The result of this research is the longest back water happened in the 8th of experiment discharge (1399,984 cm3/sec) with the slope of 3‰, by 40.800,4952 cm from the weir. In addition, slope is not affect for the length of backwater. This is because from all analysis of experiments, the longest backwater happens in different slope for each discharge, namely between 1‰, 3‰, or 4‰ of slope.                      Keywords: back water, gerigi weir, slope
STABILITAS TIANG PANCANG AKIBAT LIKUIFAKSI PADA PROYEK GEDUNG SANGGALA JAKARTA
Authors: Delia Sinta , Agung Putera Agung Maha
Published: April 2021

Liquefaction is an incident where the soil losses its shear strength due to increased porewater stress due to the incident of very fast cyclic loading in a short time. Liquefaction event due to earthquakes can cause structural failure of the building. In this case, the Sanggala Building Project in Jakarta exists at location of liquefaction potential susceptible area, and design analysis only uses the data of Cone Penetration Test (CPT). Stability analysis of pile due to liquefaction potential is aimed to determine the value of the factor of safety (FS) in the area, which is analyzed by comparing the value of Cyclic Stress Ratio (CSR) due to the earthquake and Cyclic Resistance Ratio (CRR) as the soil resistance to resist liquefaction potential. Based on the analysis and calculations performed, was obtained the value of FS > 1, which means actually the soil does not have the liquefaction potential. However, this study still takes into consideration the liquefaction potential as one of requirements of local regulation when the analysis of bearing capacity of pile foundation analyzed by the method of Schmertmann (1978) in a depth of 25 m and the results was indicated by 1660,27 kN for single pile and 12081,63 kN for the group piles. Furthermore, all these results from several stability calculations, the pile foundation system stable from liquefaction potential.
ANALISIS PENERAPAN SISTEM PENJADWALAN DENGAN METODE PERT PADA PROYEK KONSTRUKSI (STUDI KASUS: REHABILITASI DAN PENINGKATAN INFRASTRUKSI PASAR TRADISONAL KOTA MALANG)
Authors: Andardi Faris Rizal
Published: April 2021

PERT is a simplified software, to produce the expected project completion probability based on the duration or duration of a particular contract. In developing the PERT method a lot of research was carried out to perfect this method. The purpose of this study is to determine the overall duration of project completion, the magnitude of the project probability that can be completed in less than 170 days and more than 170 days, and the project completion time with the highest probability. Results of Analysis of Implementation of Scheduling System with PERT Method in Rehabilitation and Improvement of Traditional Market Infrastructure Projects in Malang City is the total duration of simulation results obtained 168 days faster than the 172 day plan. The probability of completing the 168 day project is 50%, while the probability of completing the 172 day project is 85.31%. The highest chance of the project being completed is 99.97%, with a duration of 181 days.
ALTERNATIF SKENARIO PEMANFAATAN AIR EMBUNG NELAS BERDASARKAN KARAKTERISTIK KETERSEDIAANNYA
Authors: Sulistyani Kiki Frida , Irianto Danang Bimo
Published: April 2021

Abstract East Nusa Tenggara Province is a province that has many embungs. Embung Nelas, in Lamaknen District, Belu Regencyis planned to meet the water demand of the population and cattle in Makir & Lamaksenulu Village as well as field water demand in Makir Village. Embung Nelas is design by using dependable flow Q 80%. From the calculation, Embung Nelas can meet the water demand in Makir and Lamaksenulu villages until 2040 for a population of 5888 people, 4029 large cattle, 1739 small livestock and 3277 chicken, as well as the irrigation water demand of 23 hectares the Makir Village Considering that the rainy conditions are not the same every year, a water use scenario is made based on the water conditions. There are 4 discharge conditions, dry discharge (Q97.3%), low discharge (Q 80%), normal water discharge (50.7%) and sufficient water discharge (26%). The simulation results in the other 3 scenarios, were obtained for the dry discharge of Embung Nelas in 2040 which was only able to irrigate 76% of raw water and cattle, in normal water conditions it could irrigate 6.6 Ha more fields and in sufficient water it could irrigate 12.9 Ha more fields. Keywords: Embung, Dependable flow, Simulation, Scenario
Pengaruh Jumlah Lintasan Terhadap Tebal, Berat Isi, Stabilitas Dan Kelelahan Lapisan Tipis Aspal Beton Untuk Jalan Raya
Authors: , Marjono
Published: April 2021

This Flexible pavement is commonly used on highway construction doe to its advantages, one of them is the flexibility of its mixture concrete asphalt thin layer (LATASTON) is most commonly used are cover layer of highway construction. In its implementation thin material requires a good implementation process, especially in spreading and compacting phases. Otherwise, it will result in declining service age. The research aims at analyzing the influence of passing numbers to the depth, content weight, stability and flow of the LATASTON, experimental model-making road pavement model comprising 3 different passing numbers was employed. fisrtly, compaction with 4 passes, followed by 8 passes in the second, and last was compaction with 12 passes. The anlysis show that passes are influental to the values of LATASTON depth, content weight, stability, and flow. The correlations beetwen passing number and depth Y = 0,006 X2 - 0,156 X + 4,980, correlations beetwen passing number and content weight  Y = 0,112 X2 - 1,039 X + 999,2 correlations beetwen passing number and stability  Y = 2,924 X2 - 20,64 X + 134,7  correlations beetwen passing number and flow  Y = 0,011 X2 - 0,023 X + 3,231   Keywords: flexible pavement; LATASTON; compaction; passing numbers.
Faktor-Faktor Penyebab Perselisihan Kontrak Dan Cara Penyelesaiannya Pada Proyek Pembangunan Gedung Di Kabupaten Halmahera Utara Propinsi Maluku Utara
Authors: Sri Murni Dewi, Arief Rachmansyah Nortir Collins Pasaribu,
Published: April 2021

Aktifitas proses pembangunan infrastruktur yang bersifat kompleks dan disertai dengan kemajuan teknologi konstruksi dapat meningkatkan potensi terjadinya perbedaan pemahaman, perselisihan pendapat, maupun pertentangan antara berbagai pihak yang terlibat dalam pekerjaan konstruksi. Potensi terjadinya perselisihan tersebut sering tidak dapat dihindari dan jika dibiarkan dapat berubah menjadi sengketa konstruksi. Hal ini tidak bisa dibiarkan berkepanjangan sehingga diperlukan tindakan penyelesaian sejak dini secara adil dan memuaskan bagi semua pihak. Jika dibiarkan, perselisihan akan berakibat pada penurunan kinerja secara keseluruhan dalam pelaksanaan pekerjaan konstruksi. Penelitian ini dimaksudkan untuk mengetahui faktor-faktor yang menjadi penyebab terjadinya perselisihan kontrak konstruksi dan cara penyelesaiannya menurut pemilik proyek (owner) dan kontraktor, serta untuk mengetahui apakah terdapat perbedaan pendapat antara kedua pihak tersebut.  Proyek yang dijadikan sebagai objek penelitian ini adalah proyek-proyek bangunan gedung milik Pemerintah Daerah Kabupaten Halmahera Utara Propinsi Maluku Utara. Proses pengambilan data dilakukan dengan cara penyebaran kuisioner, responden yang dimintakan pendapatnya mewakili pihak owner dan kontraktor masing-masing terdiri dari 25 orang, serta pengambilan datanya dilakukan dengan sistem sensus.Hasil penelitian ini menunjukkan bahwa menurut Owner yang didasarkan pada Fakta dan Persepsi, faktor yang paling dominan menjadi penyebab terjadinya perselisihan kontrak konstruksi adalah Faktor Pendapat Teknis (X4), masing-masing dengan nilai tingkat potensi rata-rata sebesar 89,33% dan 92,27%, nilai tersebut masuk dalam kriteria tingkat potensi Sangat Tinggi. Menurut Kontraktor yang didasarkan pada Fakta dan Persepsi, faktor yang paling dominan menjadi penyebab terjadinya perselisihan kontrak konstruksi adalah Faktor Pendapat Teknis (X4) juga, masing-masing dengan nilai tingkat potensi rata-rata sebesar 94,67% dan 96,80%, nilai tersebut masuk dalam kriteria tingkat potensi Sangat Tinggi. Tidak terdapat perbedaan yang signifikan antara pendapat Owner dan Kontraktor tentang faktor-faktor penyebab terjadinya perselisihan kontrak konstruksi, baik yang didasarkan atas Fakta maupun Persepsi. Cara penyelesaian perselisihan umumnya dilakukan dengan Negosiasi, yaitu dengan cara melakukan rapat, koordinasi, dan administrasi (surat-menyurat); sedangkan penyelesaian melalui lembaga pengadilan tidak pernah dilakukan, karena selain membutuhkan biaya yang besar dan prosesnya relatif lama, juga dapat menimbulkan dampak negatif terhadap keharmonisan hubungan antara pihak yang terlibat (Owner-Kontraktor) di waktu yang akan datang. Kata-kata kunci:  Infrastruktur, Konstruksi, Perselisihan.
Sebuah Solusi Material Baru Di Bidang Jembatan, FRP Taufiq-Girder: Konsep Dan Perilaku
Authors: Agoes Soehardjono, Achfas Zacoeb Taufiq Rochman,
Published: April 2021

Gelagar T beton bertulang konvensional sudah sangat lazim digunakan terutama pada struktur jembatan dengan bentang 5m – 25m. Akan tetapi sebenarnya, berat sendiri jembatan murni beton bertulang sangatlah berat. Pelaksanaan jembatan balok T ini juga sering mengalami kendala di lapangan pada banyaknya perancah serta schaffolding yang digunakan khususnya bila dasar sungai sangat curam. Seandainya pun dapat dilaksanakan, resiko bahaya banjir serta stabilitas tanah dan jembatan selama proses pelaksanaan sangat rentan untuk terganggu, akibatnya lendutan awalpun menjadi sangat besar. Bahan FRP dapat menjadi alternatif yang baik karena rasio kekuatan terhadap beratnya sangat tinggi.Penggunaan FRP dalam teknik sipil telah dipelajari dan didiskusikan dalam berbagai karya ilmiah oleh para peneliti asing yang rata-rata menyoroti aplikasi dari FRP sebagai bahan perbaikan dari struktur yang telah ada (retrofit) dan mereka mengatakan FRP berpotensi menjadi bahan bangunan dan sistem struktur yang pintar (smart/intelligent). Akan tetapi jarang sekali yang meneliti struktur yang baru dengan menggunakan FRP sebagai bagian dari struktur primer. Dan kalaupun ada, beberapa dari penelitian itu menggunakan FRP sebagai pelat lantai. Adapun gelagar FRP masih merupakan suatu teka-teki penelitian yang amat menarik. Penulis mengusulkan sebuah gelagar baru yang diberi nama TAUFIQ (Totally Audacity U-Fibered Intelligent Quality)-girder. Dalam tulisan ini akan dikupas perkembangan, konsep dan perilaku umum gelagar TAUFIQ. Kata-kata kunci:  serat berlapis, gelagar TAUFIQ, lamina.
The Use Of Gis In Estimating Rain Fall Erosivity Factor Of Onkaparinga Watershed- South Australia
Authors: Rahardianto Trias
Published: April 2021

The study is aimed at the examination of spatial distribution of rainfall to produce rainfall erosivity map in Onkaparinga watershed, utilising Geographic Information System (GIS). Rainfall data was obtained from rainfall stations in and around the watershed as monthly precipitation data. Ordinary least square (OLS) method implemented to observe the relationship between rainfall erosivity as dependent variable, and both of rainfall and elevation as the explanatory variable. To create the continous surface of the site specific monthly and annual average precipitation data, the universal kriging interpolattion was implemented. The regression model shows that 96% of the predicted R factor value matches the observed R factor value. The result of this study is characterised the rainfall on the watershed as high temporal variability.Keywords: GIS, DEM, Universal kriging, OLS, Rainfall erosivity
PENYUSUNAN RENCANA PELAKSANAAN PEKERJAAN BRANTAS RIVER CHECK DAM 10 (BRCD-10) KOTA BATU MALANG
Authors: Wibisono Gunawan
Published: April 2021

Uncertain seasonal changes lately, causing a lot of flooding, especially in the Brantas River Basin, causing several volcanoes in the upper reaches of the Brantas River are also often carries sediment in case of floods or heavy rain, one of these volcanoes are Arjuno Mount, many of carrying materials sedimentation. One way that can be used to reduce and control the sediment, along the Brantas River by building Sabo Dam. Sabo Dam construction plan targets not only in the upper Brantas River, but also in downstream areas of the Brantas River. Sabo Dam construction by the Contractor with Grade 7 is expected to be completed in accordance with the planning purpose, because the good planning and direction will be able to save time, costs and problems (risks) that will bring the work to the activities of its main objectives, namely the right time, right cost and right quality. Implementation work methods to used for complete the development work Sabo Dam is coffering which planned uses "Phase Half-Span", which spans half a dodger and the other half worked for the evader landscape flow. The cost of implementing the budget obtained after analysis is Rp. 5,212,063,817.11 to the difference obtained Rp. 342,856,956.89 or 6,172 % from the value of the contract, the implementation quality of existing jobs on Sabo Dam work has been largely in accordance with the technical specifications have been prepared. Deviations occur, the laying material (aggregates and sand) that is not clean, while the implementation of existing K3 is in conformity with the regulations to be referenced by the Contractor in the preparation of safety plan, only for the application to use the APD is not yet implemented. Keywords: project planning, sabo dams, check dams, waterworks
ANALISA FINANSIAL PADA PROYEK PEMBANGUNAN RUSUNAWA (STUDI KASUS PADA PROYEK PEMBANGUNAN RUSUNAWA X DI SURABAYA)
Authors: Riskijah Sitti Safiatus
Published: April 2021

Peningkatan jumlah penduduk yang sangat pesat khususnya di Surabaya, menuntut pemerintah Kota Surabaya untuk menyediakan tempat tinggal di lahan yang terbatas dan padat penduduknya, serta terjangkau oleh masyarakat menengah kebawah. Untuk itu pemerintah membangun rumah susun sederhana sewa (rusunawa) untuk memenuhi kebutuhan masyarakat kota terhadap tempat tinggal yang layak dan sehat. Pada umumnya pembangunan rusunawa tidak berorientasi pada profit, namun tetap diperlukan kajian terhadap kelayakan finansial dari investasi tersebut sebelum mengambil keputusan jadi tidaknya suatu investasi rusunawa dilaksanakan. Penelitian ini bertujuan untuk menentukan: 1) Biaya investasi, operasional dan perawatan dan pemeliharaan; 2) Pendapatan bersih yang akan diperoleh; 3) Kelayakan finansial ditinjau dari nilai NPV, IRR, BCR, dan PP; dan 4) Pengaruh perubahan nilai inflasi terhadap penilaian kelayakan finansial pembangunan Rusunawa X di Surabaya.Penelitian ini memerlukan data tentang konsep pengelolaan Rusunawa ini yang diperoleh dari hasil wawancara dengan pihak pelaksana dan pengelola rusunawa, dan data Sekunder meliputi gambar proyek, dan anggaran biaya meliputi biaya tanah, biaya pembangunan, operasional, perawatan dan pemeliharaan rumah susun serta data gaji karyawan. Analisa finansial dilakukan setelah menganalisa aliran kas masuk dan aliran kas keluar, dengan parameter kelayakan finansial yaitu NPV, IRR, BCR, dan PP. Selanjutnya dilakukan analisa sensitivitas dengan mengubah nilai inflasi dari 4%, 8%, dan 12% per tahun untuk mengetahui tingkat sensitivitasnya terhadap tingkat kelayakan finansial.Hasil analisa finansial menunjukkan: 1) Biaya investasi Pembangunan Rusunawa sebesar Rp. 16.308.885.000,-, biaya konstruksi adalah Rp. 15.584.985.000,-, biaya operasional sebesar Rp. 250.963.850,- pertahun, serta biaya perawatan dan pemeliharaan sebesar Rp. 56.000.000,- pertahun.; 2) Pendapatan bersih dari cash flow alternatif 1sebesar Rp 150.078.425.090,- dan alternatif 2 sebesar Rp 166.387.310.673,-; 3) Hasil analisa finansial pada: Alternatif 1 diperoleh PP = 30 tahun 3 bulan; NPV = - R. 2.240.089.357 < 0 (tidak layak); IRR = 8,62% < MARR (tidak layak); BCR = 0,89 < 1 (tidak layak); dan Alternatif 2 diperoleh PP = 30 tahun 6 bulan, NPV sebesar Rp. 1.763.497.422 > 0 (layak); IRR = 62,4% > MARR (layak); BCR = 1,10 > 1 (layak); 4) Hasil analisa sensitivitas pada alternatif 1 menunjukkan bahwa perubahan nilai inflasi dengan tiga kondisi tidak mempengaruhi penilaian kelayakan finansial,  sedangkan pada alternatif  2 dengan kondisi inflasi = 12% menunjukkan nilai NPV semakin besar, waktu pengembalian semakin cepat, nilai IRR semakin menurun, dan nilai BCR tidak terpengaruh dengan adanya perubahan nilai inflasi.  Kata-kata kunci:  Investasi, Rusunawa, Kelayakan Finansial, Sensitivitas.
KINERJA PONDASI TIANG PANCANG PADA GEDUNG BERDASARKAN DATA SONDIR
Authors: Novianto Dandung
Published: April 2021

Pembangunan Gedung baik untuk ruko maupun Plaza yang terdiri dari 2 lantai atau lebih sedang gencar dibangun di kota Malang. Penelitian ini menganalisa kinerja pondasi tiang pancang untuk gedung dengan membandingkan beberapa dimensi penampang berdasarkan data sondir di lapangan sebagai acuan untuk mendapatkan daya dukung tanah yang baik. Jenis pondasi yang dipakai yaitu precast reinforced concrete pile dan menggunakan Hydraulic Static Pile Driver (HSPD) untuk pemancangannya.Perencanaan pondasi berdasarkan data sondir untuk menentukan daya dukung tanah yang cukup baik sehingga didapat kedalaman atau panjang tiang pancang. Adapun jenis pondasi yang digunakan adalah tiang pancang penampang bujur sangkar dengan menggunakan 5 (lima) alternatif ukuran, yaitu 20/20 cm, 25/25 cm, 30/30 cm, 35/35 cm,  40/40 cm.Dari hasil analisa, dapat disimpulkan bahwa daya dukung tanah yang cukup baik adalah pada kedalaman 6 meter dengan daya dukung sebesar 240.238,4 kg mampu menahan beban vertikal (Qijin) sebesar 65.071, 47 Kg dan dimensi penampang tiang pancang yang efektif adalah  35/35 cm dan panjang 6 meter.Kata-kata kunci: data sondir, daya dukung, metode HSPD, dimensi, penampang
ANALISA RISIKO PADA PEMBANGUNAN GEDUNG PERUMAHAN TERHADAP PENCAPAIAN SASARAN (Studi Kasus pada Developer di Malang)
Authors: Sugeng Riyanto Moch. Khamim,
Published: April 2021

Penelitian ini bertujuan untuk mengidentifikasi potensi risiko dalam proyek konstruksi bangunan gedung dan dampaknya terhadap efektifitas pencapaian sasaran proyek. Parameter yang ditetapkan untuk memastikan potensi faktor risiko yaitu terdiri dari tingkat signifikansi risiko. Efektifitas pencapaian sasaran proyek diukur dari ketetapatan biaya, waktu dan mutu. Analisis Lintas (Path Analysis) menunjukkan bahwa faktor risiko menunjukkan faktor risiko eksternal, internal, internal teknis, dan hukum secara simultan memiliki pengaruh signifikan positif terhadap efektifitas pencapaian sasaran proyek. Faktor risiko eksternal dapat diprediksi secara parsial memiliki pengaruh signifikan terbesarKata-kata kunci: risiko, efektivitas, proyek konstruksi, sasaran proyek
PERENCANAAN JEMBATAN PENYEBERANGAN ORANG DENGAN STRUKTUR BAJA CASTELLATED DAN STRUKTUR BETON PRATEGANG VOIDED SLAB (Studi kasus Kawasan Industri Rembang Pasuruan Jl. Raya Surabaya-Pasuruan Km 50, Raci, Pasuruan)
Authors: Sugeng Riyanto, Qomariah Muhammad Ferdian Ramadianto,
Published: April 2021

The existing traffic conditions at the gate of Pasuruan Industrial Estate Rembang (PIER) located on Surabaya-Pasuruan Highway KM 50, Desa Raci, Bangil, Pasuruan is classified the National Highway type II class 1. It has an average volume of 286 pedestrian / hour (V) and 5175 vehicle / hour (P), so PV2 value is equal to 7.66 x 109. It can be a traffic accident-prone area, especially for pedestrians. Therefore, it needs the facility of Pedestrian Cross Bridge of 17.5 m span and 2.5 m wide. That is why, the writer examines the difference between the two structures in terms of cost. This study comprises planning, detailed engineering design, implementation methods, and cost estimate of castellated steel structures and prestressed concrete voided slab structures.The result of study are as follow : the castellated steel main girder WF 700 x 300 x 13 x 24 at IDR 723,247,800.00 and prestressed concrete voided slab with a size of 970 x 875 diameter 340 mm at IDR 496,282,628.00. From these results, it is concluded that construction of of prestressed concrete voided slab structure is cheaper with price difference IDR 226,965,172.00.Keyword: pedestrian bridge, castellated steel, prestressed concrete voided slab, estimate cost
ANALISA PERBANDINGAN BIAYA DAN WAKTU PERKERASAN KAKU METODE CAST IN SITU (CIS) DAN METODE PRECAST PRESTRESSED CONCRETE PAVEMENT (PPCP) (Studi Kasus Pada Proyek Jalan Tol X Di Jawa Timur)
Authors: Sugiharti Rakmat Dwi Anugrah Putra,
Published: April 2021

Concrete cracks on pavement occurred at X Toll Road implementation before the pavement attained the expected time. Consquently, it must be removed and it caused cost and time loss. CIS is a method in which fresh concrete is cured in site, and PPCP is the one in which the pavement is stressed by stretching the steel tendon and anchor into the fresh concrete before live load is applied.  The objective of the study is to compare method between the two from cost and time. California Bearing Ratio (CBR), technical drawing, daily passing vehicle rate, concrete, and itemized work cost were employed. National Association of Australian State Road Authorities (NAASRA) was employed to implement the rigid pavement; American Concrete Institute (ACI) was based on PPCP for the pavement depth design.The calculations result in 27 cm deep of CIS and 20 cm deep of PPCP; IDR 216.336.692.351,25   and 208 workday for CIS ; IDR 222.068.995.407,73 and 158 workdays for PPCPKeywords: cast in situ, cost and time, rigid pavement, prestressed precast concrete pavement
STUDI EKSPERIMENTAL PERILAKU KAPASITAS LENTUR DAN TARIK PADA BAMBU PARRING SINJAI
Authors: Nabi, Wennis Kombong, Jabair Abdul
Published: April 2021

Bambu pada umumnya telah dikenal masyarakat luas dan dalam konstruksi tidak disadari masyarakat lebih memilih bambu, seperti  Rumah panggung sederhana, tiang-tiang perancah pembangunan gedung, jembatan dan lain-lain, karena mudah diperoleh, murah dan ukuran lebih panjang dengan kekuatan yang mampu menjamin kekokohan perancah. Penelitian ini bertujuan untuk mengetahui perilaku kekuatan/kapasitas lentur dan tarik bambu parring pada saat menerima dan memikul beban, dan juga sebagai salah satu bahan alternatif pengganti kayu pada konstruksi. Penelitian ini menggunakan metode eksperimental dengan melakukan pengujian di laboratorium yaitu uji lentur dan uji tarik. Perilaku pengujian yang dilakukan adalah pada posisi bagian pangkal, tengah dan ujung atas dari batang bambu yang berumur sekitar 3 tahun. Hasil penelitian pengujian kuat lentur bambu parring menunjukkan bahwa perilaku kuat lentur memberikan nilai rata-rata terbesar pada bagian ujung atas sebesar 215,63 N/mm2, kemudian bagian tengah rata-rata sebesar 164,38 N/mm2 dan bagian pangkal sebesar 150,81 N/mm2. Dan hasil pengujian kuat tarik bambu parring menunjukkan bahwa kuar tarik rata-rata terbesar pada bagian pangkal dibandingkan dengan bagian tengah dan ujung atas, dengan nilai rata-rata sebesar 294.32 N/mm2.Kata kunci: bambu, kuat lentur.kuat tarik, bambu parring, Sinjai.
PERENCANAAN SISTEM DRAINASE BERWAWASAN LINGKUNGAN JALAN TOL GEMPOL PAKET I
Authors: Rahadian, Agus Suhardono, Mohammad Zenurianto Farid
Published: April 2021

The 5,500 m Gempol Toll Road Package I needs an environment-oriented drainage system design completed with infiltration well made at an interval of 100 m of rainwater function and maintain ground water level.The design needs some data of situational map, long-section, and rainfall from 3 nearby stations: Gempol, Winong, and Bareng, in 2002-2012. The rainfall data were processed to analyze the maximum rainfall rate; Mean Algebra Method was employed for local rainfall calculation, and Log Pearson type III was used for the 10-year design rainfall which results in 121.281 mm.The calculations result in 0,023 m³/dt rain water discharge flow to the river; rainwater tank dimensions of 2.25 m2 in area and 3 m in depth; 54 tanks on the left and 55 tanks on the right; and two 0.6 m Æ pre-cast culvert rings. The rectangular drainage channels were of stone river with dimensions of 0.7 m in width and 0.6 m in depth. The project takes 204 workdays at IDR Rp 9.633.074.000 cost.Keywords: drainage system; infiltration well; design flood.
PENGARUH VARIASI PASIR DAN ABU BATU PADA BETON BERAGREGAT KASAR PELLET POLYPROPYLENE TERHADAP KUAT TEKAN DAN LENTUR
Authors: Jalali, Khaeril Nur Aisyah
Published: April 2021

Tujuan penelitian ini adalah untuk mengetahui kuat tekan, dan kuat lentur beton akibat penggunaan pellet plastik (polypropylene) sebagai agrgeta kasar dan abu batu sebagai pengganti sebagian/seluruh kebutuhan pasir, serta untuk memanfaatkan limbah plastik dan limbah abu batu. Benda uji dibuat dari campuran semen, pasir, pellet plastik, dan air. Perancangan campuran beton berdasarkan SNI pada kuat tekan rencana 10 MPa. Variasi campuran terdiri atas beton dengan kadar abu batu 0%, 25%, 50%, 75%, dan 100%. Objek penelitian berupa  silinder Æ 100 mm tinggi 200 (kuat tekan), balok 10 x 10 x 40 cm (kuat lentur).Hasil pengujian menunjukkan bahwa kuat tekan beton rata-rata dengan kadar abu batu 0%, 25%, 50%, 75%, dan 100%  berturut-turut sebesar 6,152; 6,323; 6,470; 6,719; dan 7,230 MPa, sedangkan kuat lentur beton rata-rata  berturut-turut sebesar 2,347; 2,506; 2,822; 2,656; dan 2,593 MPa.Klasifikasi menurut Scanlon (1998), beton dengan kadar abu batu 0%, 25%, 50%, dan 75% digolongkan sebagai beton dengan berat jenis rendah (kuat tekannya 0,35-6,9 MPa), sedangkan kadar 100% abu batu digolongkan beton ringan dengan kekuatan menengah (kuat tekannya 6,9-17,3 MPa). Berdasarkan batasan Balitbang Kimpraswil (2003b), beton dengan kadar abu batu 0%-75% dikategorikan sebagai struktur sangat ringan (kuat tekannya 0,69-6,89 MPa), sedangkan kadar abu batu 100% tergolong struktur sangat ringan (kuat tekannya 6,89-17,24 MPa). Kata kunci: pellet, polypropylene, kuat tekan, kuat lentur, beton ringan
PERENCANAAN SUMUR RESAPAN DAN SALURAN DRAINASE PADA PERUMAHAN CHANDRA KIRANA REGENCY KECAMATAN SINGOSARI, KABUPATEN MALANG
Authors: Adi Zulfikar, Moch. Suaib Reiza, Suhartono Ryan Wahyu
Published: April 2021

Six hectares Chandra Kirana Regency comprises 223 units. It needs a proper 1854 m drainage system completed with run-off water tanks to avoid it from floods.The objective of the study is to design the drainage system and run-off water tanks able to control the rainwater completed with the implementation cost and time.Site plan, topographic map, and rainfall data were needed to design. Rainfall data from 3 nearby stations: Singosari, Jabung, and Blimbing from 1991-2010 were analyzed to find out the maximum rainfall data and average rainfall regions using Mean Algebra. Log Pearson III was employed to obtain the rainfall, Mononobe method was for the rainfall intensity.The addition of rain water to waste water results in 0,00004 m/sec. cumulative discharge. Based on the result, and 0,5 m diameter culvert rings are designed. 1 m diameter and 2 m deep run-off water tank is of precast concrete. 93 work days implementation time at IDR  1.061.479.450,00.Keywords: design, drainage system, proper, rainwater, water tank
STUDI REKAYASA NILAI (VALUE ENGINEERING) PERENCANAAN PEMBANGUNAN GEDUNG PERPUSTAKAAN DAN AUDITORIUM UNIVERSITAS YUDHARTA PASURUAN
Authors: Khamim, Winda Harsanti Moch.
Published: April 2021

Dalam Rencana Anggaran Biaya  Pembangunan Gedung Perpustakaan dan Auditorium Universitas Yudharta Pasuruan, diperkirakan memerlukan biaya milyaran rupiah. Disamping karena volume pekerjaan yang besar, spesifikasi item pekerjaannya yang tinggi, dan munculnya berbagai jenis material untuk jenis pekerjaan yang sama.Sehubungan dengan hal tersebut diatas, perlu diusahakan suatu metode untuk mengurangi biaya tanpa mengurangi fungsi bangunan. Salah satu metode untuk meminimalkan biaya adalah Studi Rekayasa Nilai (Value Engineering), yaitu usaha yang terorganisir yang diarahkan untuk menganalisa fungsi yang diperlukan dengan biaya seminimal mungkin dengan tahapan spekulasi, tahapan perhitungan life cycle cost, dan tahapan pengembangan dan rekomendasi.Hasil studi yaitu penghematan biaya sebesar 1.533.129.685,81 atau 19.13 % dari biaya total proyek.Kata-kata kunci: rencana anggaran biaya, value enginering, prosentase penghematan
Energy potential festulolium herbage with short-term and long-term use
Authors: Privalova Kira , Karimov Ruslan
Published: April 2021

The studies for the period 2004–2017, he reveals a high energy potential of pasture herbage technologies, created on the basis of domestic varieties of Festulolium VIK 90 at 6-and 14-year-old terms of use. The ratio of anthropogenic and natural factors in the production of pasture feed is given. At the same time, the leading role of renewable natural factors has been revealed: they account for 66–71% of the structure of metabolic energy production.
BUFFER CAPACITY OF ALFALFA DRY MATTER
Authors: Stepanova Galina
Published: April 2021

It was found that with an increase in the content of crude fiber, dry matter and soluble sugars by 1%, the buffer capacity of alfalfa dry matter decreases by 0.04–0.10, 0.09–0.19 and 0.16–1.44 mol/l, respectively. An increase in the content of crude protein, crude ash and crude fat by 1 % increases the buffer capacity of dry matter by 0.07–0.40, 0.19–86 and 0.33–1.11 mol/l, respectively. Therefore, to create alfalfa varieties with a reduced buffer capacity without appreciable damage to the feed value, it is necessary to conduct breeding to increase the content of soluble sugars and, possibly, reduce the content of raw fat.
Oridonin-Loaded Nanoparticles Inhibit Breast Cancer Progression Through Regulation of ROS-Related Nrf2 Signaling Pathway
Authors: Zhao Yue , Xiao Weiwei , Peng Wanqing , Huang Qinghua , Wu Kunru , Evans Colin E. , Liu Xinguang , Jin Hua
Published: April 2021

Oridonin (ORI) has been shown to inhibit tumor cell growth and proliferation in vitro, while its optimum anti-tumor activity in vivo is limited due to the poor aqueous solubility and bioavailability. In this study, to improve the bioavailability, we developed a nanoparticle-based drug delivery system to facilitate delivery of ORI to breast tumor. ORI was encapsulated in biodegradable nanoparticles (NPs) based on poly-lactic-co-glycolic acid (PLGA) and polyethylene glycol (PEG) to form ORI NPs (ORI-NPs). The resulting ORI-NPs exhibited a mean particle diameter of 100 nm and displayed an efficient cellular uptake by human breast cancer MCF-7 cells. Compared to free ORI that showed no effects on tumor cell proliferation, the ORI-NPs showed significant cytotoxicity and delayed endothelial cell migration, tube formation and angiogenesis. Pharmacokinetics studies showed that ORI-NPs significantly increased the half-life of ORI in the blood circulation. In the nude mouse xenograft model, ORI-NPs markedly inhibited tumor growth and angiogenesis, while ORI did not show any inhibitory effects on the growth of tumor xenografts. The mechanism experiments showed that the antitumor activity of ORI-NPs against breast cancer might be through ROS related Nrf2/HO-1 signaling pathway. Together, these results demonstrated that ORI-loaded PEG-PLGA NPs enhanced bioactivity and bioavailability in vivo over ORI, indicating that ORI-NPs may represent a promisingly effective candidate against breast cancer.
Development of Sustainable Alkali-Activated Mortars Using Fe-Rich Fayalitic Slag as the Sole Solid Precursor
Authors: Adediran Adeolu , Yliniemi Juho , Illikainen Mirja
Published: April 2021

Graphical Abstract

Development of sustainable alkali-activated mortars using Fe-rich fayalitic slag as the sole solid precursor.
Photodynamic Antimicrobial Chemotherapy: Advancements in Porphyrin-Based Photosensitize Development
Authors: Oyim James , Omolo Calvin A. , Amuhaya Edith K.
Published: April 2021

The reduction of available drugs with effectiveness against microbes is worsening with the current global crisis of antimicrobial resistance. This calls for innovative strategies for combating antimicrobial resistance. Photodynamic Antimicrobial Chemotherapy (PACT) is a relatively new method that utilizes the combined action of light, oxygen, and a photosensitizer to bring about the destruction of microorganisms. This technique has been found to be effective against a wide spectrum of microorganisms, including bacteria, viruses, and fungi. Of greater interest is their ability to destroy resistant strains of microorganisms and in effect help in combating the emergence of antimicrobial resistance. This manuscript reviews porphyrins and porphyrin-type photosensitizers that have been studied in the recent past with a focus on their structure-activity relationship.