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All Journal Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Jurnal Teknik Sipil dan Perencanaan Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto) Jurnal Ilmiah Dinamika Rekayasa (DINAREK) Jurnal Pengabdian Masyarakat Indonesia
Purwanto Bekti Santoso, Purwanto Bekti
Teknik Sipil, Universitas Jenderal Soedirman, Indonesia
Humanities Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Public Health Social Sciences

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MODEL GR4J (Ge’nie Rural a’ 4 Parame’tres Journalier) UNTUK MENDUKUNG ANALISIS KETERSEDIAAN AIR DI DAS TAJUM Santoso, Purwanto Bekti
Techno Jurnal Ilmu Teknik Vol 13, No 1 (2012): Jurnal Techno April 2012
Publisher : UMP

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Abstract

This study aims to apply the GR4J model as rainfall-runoff modeling in Tajum watershed to get four free parameters obtained from daily rainfall data. In this study, input data is in the form of daily rainfall data and potential evapotranspiration data. The output of calculated discharged is calibrated using observations of daily discharge data. This modeling optimizes four free parameters of the Maximum Capacity of Production Store (X 1), Groundwater Coefficient (X 2), Maximum Capacity of Routing Store (X 3), and Peak Time of Ordinate Unit Hydrograph (X 4).  The optimum values of the modeling parameters of GR4J are obtained from the criterion of the smallest discrepancies between calculated and observed data, which are Nash-Sutcliffe Coefficient (NS), the correlation coefficient values and methods of Relative Volume Error (RVE). There are three stages in this modeling, namely: model calibration, model verification and model validation. Model calibration is carried out by using the first five years of data and verification of models uses the second five years of data. Comparisons of GR4J with other two rainfall-runoff models, Mock and SAC-SMA Models, were also carried. Results of this study indicate that GR4J model shows better performance than the Mock models and SAC-SMA models in terms of the criterion evaluated. Keywords: Tajum watershed, water availability, rainfall-runoff, GR4J models
PENGARUH GEOMETRI JALAN DAN INTENSITAS HUJAN TERHADAP KEDALAMAN GERUSAN DI BAHU JALAN YANG TIDAK DIPERKERAS Purnomo, Sanidhya Nika; Santoso, Purwanto Bekti; Widianto, Wahyu; Baiqun, Dimas; Muslihudin, Miftah
Jurnal Geografi Vol 14, No 1 (2017): January 2017
Publisher : Jurnal Geografi

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Abstract

Scour on the unpaved shoulder of the road is an interesting phenomenon that is still quite new in terms of analysis and discussion so that still needs further publication, since most of the roads in Indonesia has many national, provincial, district and village roads have unpaved shoulders. One cause scours in the shoulder of the road is the runoff of rain. The runoff flowing on the unpaved shoulder road, resulting in sediment transport from the upstream to the lower elevation of road shoulder. It is necessary to analyse the influence of the road geometry and intensity of the rain to scour depths of the road shoulder. In this publication conducted multivariable analysis in the influence of road geometry and rain intensity against scour depth in the unpaved shoulder of the road. The analysis starts from primary data collection in the form of a soil sample originating from the road shoulder and road geometry on some streets in Central Java, as well as secondary data in the form of rainfall data at the rain station in Central Java. The primary data in the form of soil samples, were tested in the laboratory to obtain sediment grain diameter D50, specific gravity, and the type of soil samples. Primary data that have been tested in the laboratory, as well as secondary data, then analyzed using multivariate analysis to obtain the equation model for the depth of scour at the shoulder of the road due to the influence of the road geometry and intensity of rainfall. Equation depth of scour at the curb multivariable analysis provides equal results are quite close to the depth of the data collection in the field. The results of the equation also shows that the scour depth of scour at the shoulder of the road were most affected by the slope of the cross street (Sl), and successively followed by the influence of the slope of the elongated path (Sp), the rainfall intensity (I), and the diameter of the granules (D50), where each regression coefficient row is 1223.067; 941.233; 0.8321; and 0.183. Results of multivariable analysis on shoulder scour equation provides multiple regression statistical value R of 0.946, R square of 0.894, adjusted R square of 0.869, and the standard error of 55.344.
Pendekatan Eksperimen Pada Pola Gerusan Di Bahu Jalan Yang Tidak Diperkeras Purnomo, Sanidhya Nika; Santoso, Purwanto Bekti; Widiyanto, Wahyu -; Aulian, Lutfi -; Gunawan, Sri -
Jurnal Teknik Sipil dan Perencanaan Vol 19, No 1 (2017): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

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Abstract

Scour at the unpaved shoulder of the road is an interesting phenomenon that needs to be furtherlyinvestigated. This paper presents the scour pattern on the unpaved shoulder of the road for 5 samples with 3 variations of soil type. Each sample was tested using models of the body and the shoulder of the road in accordance with conditions on the field, which is simulated using a variation of the transverse slope of the road, the longitudinal slope, and rainfall intensity. The experimental results showed that the sandy soil provides smaller damage than the inorganic clay and silt inorganic.Gerusan di bahu jalan yang tidak diperkeras merupakan fenomena menarik yang perlu diteliti lebih lanjut.Pada makalah ini, disajikan mengenai pola gerusan di bahu jalan yang tidak diperkeras untuk 5 sampel bahu jalan dengan 3 variasi jenis tanah.Masing-masing sampel diuji dengan membuat model badan dan bahu jalan sesuai dengan kondisi di lapangan, yang disimulasikan menggunakan variasi kemiringan melintang jalan, kemiringan memanjang jalan, dan intensitas hujan.Hasil eksperimen menunjukkan bahwa tanah pasir memberikan kerusakan yang lebih kecil dibandingkan dengan tanah lempung anorganik dan lanau anorganik.
PENGARUH GEOMETRI JALAN DAN INTENSITAS HUJAN TERHADAP KEDALAMAN GERUSAN DI BAHU JALAN YANG TIDAK DIPERKERAS Purnomo, Sanidhya Nika; Santoso, Purwanto Bekti; Widianto, Wahyu; Baiqun, Dimas; Muslihudin, Miftah
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 14, No 1 (2017): January 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v14i1.9778

Abstract

Scour on the unpaved shoulder of the road is an interesting phenomenon that is still quite new in terms of analysis and discussion so that still needs further publication, since most of the roads in Indonesia has many national, provincial, district and village roads have unpaved shoulders. One cause scours in the shoulder of the road is the runoff of rain. The runoff flowing on the unpaved shoulder road, resulting in sediment transport from the upstream to the lower elevation of road shoulder. It is necessary to analyse the influence of the road geometry and intensity of the rain to scour depths of the road shoulder. In this publication conducted multivariable analysis in the influence of road geometry and rain intensity against scour depth in the unpaved shoulder of the road. The analysis starts from primary data collection in the form of a soil sample originating from the road shoulder and road geometry on some streets in Central Java, as well as secondary data in the form of rainfall data at the rain station in Central Java. The primary data in the form of soil samples, were tested in the laboratory to obtain sediment grain diameter D50, specific gravity, and the type of soil samples. Primary data that have been tested in the laboratory, as well as secondary data, then analyzed using multivariate analysis to obtain the equation model for the depth of scour at the shoulder of the road due to the influence of the road geometry and intensity of rainfall. Equation depth of scour at the curb multivariable analysis provides equal results are quite close to the depth of the data collection in the field. The results of the equation also shows that the scour depth of scour at the shoulder of the road were most affected by the slope of the cross street (Sl), and successively followed by the influence of the slope of the elongated path (Sp), the rainfall intensity (I), and the diameter of the granules (D50), where each regression coefficient row is 1223.067; 941.233; 0.8321; and 0.183. Results of multivariable analysis on shoulder scour equation provides multiple regression statistical value R of 0.946, R square of 0.894, adjusted R square of 0.869, and the standard error of 55.344.
Pendekatan Eksperimen Pada Pola Gerusan Di Bahu Jalan Yang Tidak Diperkeras Purnomo, Sanidhya Nika; Santoso, Purwanto Bekti; Widiyanto, Wahyu -; Aulian, Lutfi -; Gunawan, Sri -
Jurnal Teknik Sipil dan Perencanaan Vol 19, No 1 (2017): Jurnal Teknik Sipil & Perencanaan
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v19i1.9495

Abstract

Scour at the unpaved shoulder of the road is an interesting phenomenon that needs to be furtherlyinvestigated. This paper presents the scour pattern on the unpaved shoulder of the road for 5 samples with 3 variations of soil type. Each sample was tested using models of the body and the shoulder of the road in accordance with conditions on the field, which is simulated using a variation of the transverse slope of the road, the longitudinal slope, and rainfall intensity. The experimental results showed that the sandy soil provides smaller damage than the inorganic clay and silt inorganic.Gerusan di bahu jalan yang tidak diperkeras merupakan fenomena menarik yang perlu diteliti lebih lanjut.Pada makalah ini, disajikan mengenai pola gerusan di bahu jalan yang tidak diperkeras untuk 5 sampel bahu jalan dengan 3 variasi jenis tanah.Masing-masing sampel diuji dengan membuat model badan dan bahu jalan sesuai dengan kondisi di lapangan, yang disimulasikan menggunakan variasi kemiringan melintang jalan, kemiringan memanjang jalan, dan intensitas hujan.Hasil eksperimen menunjukkan bahwa tanah pasir memberikan kerusakan yang lebih kecil dibandingkan dengan tanah lempung anorganik dan lanau anorganik.
Pengaruh Bambu Untuk Pipa Distribusi Air Minum Terhadap Kualitas Air (Studi Kasus Distribusi Air Minum Di Paweden, Karangkobar, Banjarnegara) Nastain Nastain; Gito Sugiyanto; Purwanto Bekti Santoso
Dinamika Rekayasa Vol 1, No 1 (2005): Dinamika Rekayasa - Agustus 2005
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2005.1.1.1

Abstract

This research was aimed to know bamboo influence to the physical, and chemical characteristic, and water quality. Parameters observed are temperature, color, taste, odor, pH,DO (dissolved oxygen), BOD (biochemical oxygen demand) and COD (biochemical oxygen demand). The result showed that bamboo influence to the physical and chemical characteristic is smaller effect, except to the DO and COD parameters, it is polynomial change. The result of water quality showed that water to bamboo distribution is suitable used to drinking water resources. 
Workshop Penggunaan Microsoft Office Sebagai Penunjang Keterampilan Hard Skill Siswa Pendidikan Dasar Hari Prasetijo; Ari Fadli; Purwanto Bekti Santoso; Widhiatmoko Herry Purnomo
Jurnal Pengabdian Masyarakat Indonesia Vol 1 No 1 (2021): JPMI - Februari 2021
Publisher : CV Infinite Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jpmi.2

Abstract

Dusun Siwarak Kulon merupakan salah satu desa yang ada di Desa Watuagung yang terletak di ketinggian 200- 250 MDPL di kawasan hutan pinus Perum Perhutani Kesatuan Pemangkuan Hutan (KPH) Banyumas. Di sini terdapat sebuah Sekolah Dasar yang ketersediaan fasilitas pendukung pendidikan formal dan kegiatan ekstra yang terbatas. Kemampuan pada penggunaan Microsoft Office merupakan salah satu faktor yang dapat menunjang pendidikan formal, oleh karena itu  kegiatan workshop penggunaan Microsoft Office untuk pendidikan dasar sangat dibutuhkan. Kegiatan ini bertujuan memberikan edukasi tentang penggunaan Microsoft Office. Kegiatan ini dilaksanakan dengan metode presentasi materi dan praktik sederhana. Hasil worskhop menunjukan nilai rata-rata pre test peserta adalah 37.39, sedangkan nilai rata-rata post test peserta adalah 72.60.  Hasil tersebut menunjukan bahwa kegiatan workshop menunjukan adanya dampak peningkatan dalam pemahaman dan ketrampilan peserta dalam penggunaan komputer dan pengoperasian aplikasi Microsft Office.
Co-Authors Ari Fadli Dimas Baiqun, Dimas Gito Sugiyanto Hari Prasetijo Lutfi - Aulian, Lutfi - Miftah Muslihudin, Miftah Nastain Sanidhya Nika Purnomo, Sanidhya Nika Sri - Gunawan, Sri - Wahyu Widianto Wahyu Widiyanto, Wahyu Widhiatmoko Herry Purnomo