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FEASIBILITY STUDY BENDUNGAN POH SANTEN DI KABUPATEN JEMBRANA Ketut Nuraga; I Gusti Lanang Bagus Eratodi
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 16, No 2 (2020): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v16i2.36903

ABSTRAKPembangunan sarana penyediaan air baku bagi Kabupaten Jembrana merupakan salah satu kebutuhan yang utama bagi kelangsungan hidup masyarakat di daerah tersebut. Sarana penyediaan air baku berupa bendungan sebagai tempat tampungan air merupakan suatu alternatif dalam mengatasi masalah pemenuhan kebutuhan air irigasi dan air bersih didaerah tersebut. Pada studi-studi tentang ketersediaan air baik air permukaan maupun bawah permukaan dengan tingkat kebutuhan air penduduk di Kabupaten Jembrana yang semakin meningkat, maka telah direkomendasikan untuk melakukan kajian-kajian teknis tentang upaya-upaya penyediaan air baku terutama dengan membangun bendungan. Salah satu studi yang telah direkomendasikan adalah melakukan studi pendahuluan berupa studi kelayakan Bendungan Poh Santen di daerah aliran sungai (DAS) Tukad Pergung di Kecamatan Medoyo. Dalam studi ini, desain awal bendungan Poh Santen dipilih konstruksi Bendungan Tipe Urugan Inti Vertikal dengan material urugan random sesuai dengan ketersediaan jenis material di lokasi studi. Tinggi bendungan 32 m dan tampungan total sebesar 1,272x106 m3. Pemanfaatan air bendungan Poh Santen untuk memenuhi kebutuhan air irigasi seluas 269 ha dan memenuhi kebutuhan air bersih penduduk dengan debit rencana sebesar 0,142 m3/dt. Analisis kelayakan didapat hasil bendungan Poh Santen dinyatakan sangat layak untuk dilajutkan pada tahap Detail Desain (IRR12% dan BCR1)Kata kunci: bendungan, tampungan, air irigasi, air bersih, kelayakan teknis ABSTRACTThe construction of raw water supply facilities for Jembrana Regency is one of the main needs for the survival of the people in the area. Means of supplying raw water in the form of dams as water reservoirs are an alternative in overcoming the problem of meeting the needs of irrigation water and clean water in the area. In studies of the availability of water both surface and subsurface water with the increasing level of water needs of the population in Jembrana Regency, it has been recommended to conduct technical studies on efforts to provide raw water, especially by building dams. One study that has been recommended is a preliminary study in the form of a feasibility study of the Poh Santen Dam in the Tukad Pergung watershed in Medoyo District. In this study, the initial design of the Poh Santen dam was chosen by the construction of a Vertical Core Urugan Dam type with a random Urugan material according to the availability of material types at the study site. The dam is 32 m high and the total reservoir is 1,272 x 106 m3. Utilization of Poh Santen dam water to meet irrigation water needs covering an area of 269 ha and meet the population's clean water needs with a planned discharge of 0.142 m3 / sec. The feasibility analysis shows that the results of the Poh Santen dam are declared to be very feasible to be continued at the Design Detail stage (IRR 12% and BCR 1)Keywords: dams, reservoirs, irrigation water, clean water, technical feasibility

Analisis Perbandingan Penjadwalan Menggunakan Critical Path Method (CPM) dengan Precedence Diagram Method (PDM) (Studi Kasus : Proyek Pembangunaan SD Negeri 5 Pecatu) Komang Agus Ariana; Ketut Nuraga; Putu Budiarnaya; Putu Ariawan; I Gusti Ngurah Nyoman Wismantara; Nengah Riana; Kadek Pasek Pangestu
Jurnal Ilmiah Telsinas Vol 4 No 1 (2021)
Publisher : Universitas Pendidikan Nasional

Penjadwalana proyek sangat berpengaruhcterhadap keberhasilan dan kegagalan suatu proyek. Tujuanszxdari penelitian ini adalaha menganalisa penjadwalanc zproyeka dengana menentukanu kegiatan-kegiatans kritisz dan durasinyal menggunakan metodeh Criticalz Pathz Methodq (CPM)’ dan PrecedencezxDiagram Method (PDM). Datag yangv digunakanq dalamb penelitian iniz adalahx datas sekundera zyanga diperolehac dariiy kontraktorcpelaksana. Berdasarkan hasil penelitian dari Critical Path Method (CPM) diperoleh durasi 25 minggu atau 175 hari dengan kegiatan-kegiatan yang kritisnya antara lain kegiatan pekerjaan persiapan; pekerjaan tanah dan pondasi; pekerjaan listplank beton; pekerjaan balok dan pelat lantai 2; pekerjaan ring balok atap; pekerjaan pasangan kusen, pintu, dan jendela;pekerjaan sanitair/plumbing; pekerjaan pengecatan. Sedangkan hasil penelitian dari Precedence Diagram Method (PDM) diperoleh durasi 26 minggu atau 182 hari dengan kegiatan-kegiatan yang kritisnya antara lain kegiatan pekerjaan persiapan; pekerjaan’ tanah,’dan pondasi; pekerjaan pile’’cap; pekerjaan sloof; pekerjaan’’kolom lantai 1; pekerjaan tangga beton; pekerjaan balok dan pelat lantai 2; pekerjaan kolom lantai 2; pekerjaan ring balok atap; pekerjaan dinding dan plesteran; pekerjaan pasang keramikkklantaiiddan dinding; pekerjaan pasangg kusen,ddpintu dan jendela; pekerjaandggpengecatan; ddpekerjaan elektrikal. Perbandingan hasil analisa metode CPM dan PDM menunjukkan perhitungan PDM yang paling optimal karena pada proyek pembangunan SDN 5 Pecatu memiliki pekerjaan-pekerjaan yang tumpang tindih.

SISTEM PENYEDIAAN AIR MINUM DI DESA REJASA KECAMATAN PENEBEL KABUPATEN TABANAN I Ketut Nuraga; I Komang Agus Ariana
Jurnal Ilmiah Telsinas Vol 1 No 2 (2018)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.913 KB)

Rejasa Village at Tabanan regency is the village were classified into the critical watersource especially for real water (domestic & non-domestic), including 4 (four) sub-villages : RejasaKaja, Rejasa Kelod, Pacut & Kelembang.To handle the critical water, water sources from other villages can be used such as the Bejiwater source in Pitra village of Penebel district. The expected water source discharge around 7.50 lt/s,and it’s confirmed to be able to fulfill the drinking water requirement of Rejasa village citizens until therequirement projection in the year 2040 for around 5.0 lt/s.The water flow from Beji water source in Pitra to the connection system to the reservoir withthe gravity flow system. The water availability is separated into 4 sub-systems, which are the RejasaKaja reservoir with volume design of 200 m3, the Rejasa Kelod reservoir (V = 175 m3), the Pacutreservoir (V = 100 m3), and the Kelembang reservoir (V = 100 m3).

PERENCANAAN SISTEM DRAINASE LINGKUNGAN KAWASAN LOLOAN TIMUR, KABUPATEN JEMBRANA Ketut Hedi Mahayana; I Ketut Nuraga; Putu Budiarnaya; Putu Ariawan
Jurnal Ilmiah Telsinas Vol 2 No 2 (2019)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2548.699 KB)

Bali is one of the provinces in central Indonesia that is famous for the comfort of its area. Of course this must be supported by adequate infrastructure such as drainage. With the increasing number of residents in each area such as in Jembrana Regency and inadequate drainage facilities, causing floods that disrupt the comfort of the area, drainage planning, especially secondary and tertiary channels, is necessary. in urban areas. Therefore the drainage planning there is adjusted to the planning standards that have been set and planned with dimensions using a return period (5 years) for secondary or tertiary channels. The purpose of the Final Project is to find out the plans for the environmental drainage system and analyze the dimensions of the channel drainage that can overcome inundation in the East Loloan area, Jembrana Regency. Data used are rainfall data from 2007-2016, using the RAPS method, Thiesson Polygon, type III log pearson, Smirnov-Kolmogrov, Talbot and Rational methods, the method used until you get a plan debit with an average of 0.3275 m3 / sec. Continuing to calculate the dimensional recommendations with a hydraulics count using the principle of uniform flow. From the existing conditions in the East Loloan area, Jembrana Regency often experiences inundation because of the inadequate channel dimensions, therefore it is necessary to do a re-planning with dimensions that can accommodate a larger water discharge so that inundation does not occur as before with a count of planned new plans.

Analisis Daktilitas Struktur Gedung Rangka Beton Bertulang Dengan Metode Analisis Pushover: (Studi: Gedung Tugu Reasuransi Indonesia Jakarta) Ketut Nuraga; Dewa Ayu Putu Adhiya Garini Putri; Ketut Antriksa; Joao Ficher
Jurnal Ilmiah Telsinas Vol 4 No 2 (2021)
Publisher : Universitas Pendidikan Nasional

Hasil analisis daktilitas struktur gedung beton bertulang dengan metode analisis Pushover menggunakan program SAP2000 didapat besarnya perpindahan pada sendi plastis saat ultimit dengan sendi plastis yang pertama kali terbentuk, diperoleh faktor daktilitas pada arah x sebesar (?) = 2,29 dan arah faktor daktilitas arah y sebesar (?) = 2,42 nilai faktor aktual daktilitas tersebut menunjukan bahwa struktur gedung tersebut bersifat Daktail parsial, dimana struktur mengalami respon inelastic.

Analisis Kelayakan Finansial dan Kerugian Akibat Adanya Pandemi Covid-19 pada Angkutan Wisata dan Angkutan Antar Jemput I Gede Fery Surya Tapa; Putu Ariawan; I Ketut Nuraga
Jurnal Ilmiah Telsinas Vol 5 No 1 (2022)
Publisher : Universitas Pendidikan Nasional

Before the Covid-19 pandemic, an increase in the number of foreign and domestic tourists. With the increase in the number of tourists, the number of tourist travel efforts to increase the mode of transportation, with the aim of travel and shuttle visits increases every year. The objectives of the study are to analyze most of the BOK of tourist and shuttle transportation, to analyze the revenue of financial transportation and shuttle transportation, and to analyze the feasibility of tourist and shuttle transportation. The data needed for this study are primary data obtained from questionnaire surveys and interviews, and secondary data obtained through related institutions. The total operational cost of the tourist transportation vehicle is Rp. 5,937,007,065 12 vehicles / year, shuttle transportation of Rp. 5,975,220,122 17 vehicles / year. The total tourism transportation revenue is Rp. 7,158,878,400 12 vehicles / year, and shuttle transportation of Rp. 8,978,130,221 17 vehicles / year. The financial feasibility of tourist transportation with an NPV value of Rp. 100,640,493,054> 0 (feasible), BCR value 1.95> 1 (feasible), IRR value 42.478%> 15% MARR (feasible), and PBP time of 7 years and 1 month. Shuttle transportation NPV value of Rp. 734,194,558> 0 (feasible), BCR value 1.02> 1 (feasible), IRR value 19.649%> 15% MARR (feasible), and PBP time of 6 years 4 months. Sensitivity analysis of tourist transportation costs increased by 34%, income decreased by 34% and shuttle costs increased by 1.5%, income decreased by 1.5%. Losses during 2020-2021, for tourist transportation amounted to -Rp. 10,782,606,379 12 vehicles / 2 years, shuttle transportation of -Rp. 16,866,802,314 17 vehicles / 2years.

Study of irrigation performance index in Saba irrigation area Putu Indah Dianti Putri; Putu Ardi Suputra; I Ketut Nuraga
Journal of Infrastructure Planning and Engineering (JIPE) Vol. 1 No. 1 (2022)
Publisher : Master Program of Infrastructure and Environmental Engineering, Postgraduate Program, Warmadewa University

Saba Irrigation Area is located in Gerokgak and Seririt District, Buleleng regency, Bali. The assessment of the irrigation performance index is required to maintain the value of irrigation asset function and condition. Some problems occur in the irrigation area from the standard area of 1548 ha, but the productive land is around 889 ha or about 57% of the standard area. The problems were found in the irrigation canal, which hampered the performance of irrigation downstream, where water cannot flow to rice fields. The wet cross-section of the channel is covered by sediment. Even at several locations, the sediment height has the same elevation as the surrounding surface. The purpose of this study is to obtain value in the form of an assessment index on the primary and secondary irrigation systems, which will be classified into their respective components. Furthermore, rehabilitation priority is determined using the decision-making method with the Analytic Hierarchy Process (AHP) and Analytic Network Process (ANP). The assessment of irrigation performance index scored 62.94% consisting of physical infrastructure 29.28%; crop productivity 7.24%; supporting facilities 4.95%; personnel organization 10.75%; documentation 3.40%; and water user associations 7.33%. Determining the rehabilitation priority using the AHP method and ANP method showed the same results, i.e. physical infrastructure in rank 1, personnel organization in rank 2, crop productivity in rank 3, water user associations in rank 4, supporting facilities in rank 5, and documentation in rank 6. Determination of the selected rehabilitation in the physical infrastructure aspect is the sub-aspect of irrigation channels. Irrigation channels get the highest score with the worst damage conditions from all sub-aspects.

Analisis Perbandingan Penjadwalan Menggunakan Critical Path Method (CPM) dengan Precedence Diagram Method (PDM) (Studi Kasus : Proyek Pembangunaan SD Negeri 5 Pecatu) Komang Agus Ariana; Ketut Nuraga; Putu Budiarnaya; Putu Ariawan; I Gusti Ngurah Nyoman Wismantara; Nengah Riana; Kadek Pasek Pangestu
Jurnal Ilmiah Telsinas Vol 4 No 1 (2021)
Publisher : Universitas Pendidikan Nasional

Penjadwalana proyek sangat berpengaruhcterhadap keberhasilan dan kegagalan suatu proyek. Tujuanszxdari penelitian ini adalaha menganalisa penjadwalanc zproyeka dengana menentukanu kegiatan-kegiatans kritisz dan durasinyal menggunakan metodeh Criticalz Pathz Methodq (CPM)’ dan PrecedencezxDiagram Method (PDM). Datag yangv digunakanq dalamb penelitian iniz adalahx datas sekundera zyanga diperolehac dariiy kontraktorcpelaksana. Berdasarkan hasil penelitian dari Critical Path Method (CPM) diperoleh durasi 25 minggu atau 175 hari dengan kegiatan-kegiatan yang kritisnya antara lain kegiatan pekerjaan persiapan; pekerjaan tanah dan pondasi; pekerjaan listplank beton; pekerjaan balok dan pelat lantai 2; pekerjaan ring balok atap; pekerjaan pasangan kusen, pintu, dan jendela;pekerjaan sanitair/plumbing; pekerjaan pengecatan. Sedangkan hasil penelitian dari Precedence Diagram Method (PDM) diperoleh durasi 26 minggu atau 182 hari dengan kegiatan-kegiatan yang kritisnya antara lain kegiatan pekerjaan persiapan; pekerjaan’ tanah,’dan pondasi; pekerjaan pile’’cap; pekerjaan sloof; pekerjaan’’kolom lantai 1; pekerjaan tangga beton; pekerjaan balok dan pelat lantai 2; pekerjaan kolom lantai 2; pekerjaan ring balok atap; pekerjaan dinding dan plesteran; pekerjaan pasang keramikkklantaiiddan dinding; pekerjaan pasangg kusen,ddpintu dan jendela; pekerjaandggpengecatan; ddpekerjaan elektrikal. Perbandingan hasil analisa metode CPM dan PDM menunjukkan perhitungan PDM yang paling optimal karena pada proyek pembangunan SDN 5 Pecatu memiliki pekerjaan-pekerjaan yang tumpang tindih.

Analisis Daktilitas Struktur Gedung Rangka Beton Bertulang Dengan Metode Analisis Pushover: (Studi: Gedung Tugu Reasuransi Indonesia Jakarta) Ketut Nuraga; Dewa Ayu Putu Adhiya Garini Putri; Ketut Antriksa; Joao Ficher
Jurnal Ilmiah Telsinas Vol 4 No 2 (2021)
Publisher : Universitas Pendidikan Nasional

Hasil analisis daktilitas struktur gedung beton bertulang dengan metode analisis Pushover menggunakan program SAP2000 didapat besarnya perpindahan pada sendi plastis saat ultimit dengan sendi plastis yang pertama kali terbentuk, diperoleh faktor daktilitas pada arah x sebesar (?) = 2,29 dan arah faktor daktilitas arah y sebesar (?) = 2,42 nilai faktor aktual daktilitas tersebut menunjukan bahwa struktur gedung tersebut bersifat Daktail parsial, dimana struktur mengalami respon inelastic.

Analisis Kelayakan Finansial dan Kerugian Akibat Adanya Pandemi Covid-19 pada Angkutan Wisata dan Angkutan Antar Jemput I Gede Fery Surya Tapa; Putu Ariawan; I Ketut Nuraga
Jurnal Ilmiah Telsinas Vol 5 No 1 (2022)
Publisher : Universitas Pendidikan Nasional

Before the Covid-19 pandemic, an increase in the number of foreign and domestic tourists. With the increase in the number of tourists, the number of tourist travel efforts to increase the mode of transportation, with the aim of travel and shuttle visits increases every year. The objectives of the study are to analyze most of the BOK of tourist and shuttle transportation, to analyze the revenue of financial transportation and shuttle transportation, and to analyze the feasibility of tourist and shuttle transportation. The data needed for this study are primary data obtained from questionnaire surveys and interviews, and secondary data obtained through related institutions. The total operational cost of the tourist transportation vehicle is Rp. 5,937,007,065 12 vehicles / year, shuttle transportation of Rp. 5,975,220,122 17 vehicles / year. The total tourism transportation revenue is Rp. 7,158,878,400 12 vehicles / year, and shuttle transportation of Rp. 8,978,130,221 17 vehicles / year. The financial feasibility of tourist transportation with an NPV value of Rp. 100,640,493,054> 0 (feasible), BCR value 1.95> 1 (feasible), IRR value 42.478%> 15% MARR (feasible), and PBP time of 7 years and 1 month. Shuttle transportation NPV value of Rp. 734,194,558> 0 (feasible), BCR value 1.02> 1 (feasible), IRR value 19.649%> 15% MARR (feasible), and PBP time of 6 years 4 months. Sensitivity analysis of tourist transportation costs increased by 34%, income decreased by 34% and shuttle costs increased by 1.5%, income decreased by 1.5%. Losses during 2020-2021, for tourist transportation amounted to -Rp. 10,782,606,379 12 vehicles / 2 years, shuttle transportation of -Rp. 16,866,802,314 17 vehicles / 2years.

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