Browsing by Author "Widyanto, Bambang Eko"
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- ItemANALYSIS OF FLOOD DISCHARGE IN WATERSHEDS AND THEIR HANDLING (Case Study: Cibeureum River, Bandung City, West Java)(International Journal of Psychosocial Rehabilitation, Vol.24, Issue 02, 2020) Setiawan, Asep; Agustian, Yanyan; Widyanto, Bambang EkoTo overcome the overflow of water from the Cibeureum river in Bandung, a detailed plan is needed regarding the hydrological aspects, the environment and the ideal capacity of the river's cross section so that an ideal and applicative and appropriate handling of the flood problem can be planned. This research was conducted to evaluate the flood discharge of the Cibeureum river and to plan river handling that is efficient, effective and appropriate and able to deal with the problems of flooding caused by overflowing river water. From the results of the study it was concluded that the Flood Discharge Plan with the Period of Return Q25 obtained a Flood Discharge of 61.62 ݉3 / sec by using the Snyder method. From the analysis of the existing river capacity compared with the flood discharge plan Q25 it is known that there is overtopping at several Cibeureum river stations / segments with a maximum height of 2 meters above the river embankment. Normalization and Restoration of River needs to be done or returning to its original condition and function refers to PP 38/2011 concerning Rivers, especially in locations that have overtopping, among others, making new embankments, adding height of existing embankments and river normalization (sediment dredging).
- ItemFLOOD IMPACT REDUCTION STUDY BY APPLYING RAINWATER HARVESTING IN DE MARRAKESH RESIDENTIAL(Turkish Journal of Computer and Mathematics Education, 2021) Hasan, Fuad; Agustian, Yanyan; A, R. Herdian Bayu; Widyanto, Bambang EkoFlood is a natural phenomenon that can threaten the existence of human life, especially during the rainy season. In addition, the increasing need for residential facilities has an impact on changing land functions in an area that was originally an infiltration area to become a residential area. De Marrakesh Residential which has a land area of ± 117.025 m2 is a residential area located in the Kecamatan Rancasari of Bandung City. In terms of flood prevention, this residential area already has a retention pond and pumps that drains water into the Cipamokolan river. But in reality there are still puddles that inundate the residential area of De Marrakesh. To deal with this, a flood impact reduction study was carried out by applying rainwater harvesting. In this study, the analysis carried out is the calculation of the planned rainfall, the selection of the type of rain distribution, the calculation of the volume of rainfall, and the estimated calculation of the volume of rainfall that can be captured. From the results of the analysis and calculations, the application of rainwater harvesting can reduce the impact of flooding that occurs in De Marrakesh Residential.
- ItemFLOOD IMPACT REDUCTION STUDY BY APPLYING RAINWATER HARVESTING IN DE MARRAKESH RESIDENTIAL(Turkish Journal of Computer and Mathematics Education, 2021) Hasan, Fuad; Agustian, Yanyan; A, R. Herdian Bayu; Widyanto, Bambang EkoFlood is a natural phenomenon that can threaten the existence of human life, especially during the rainy season. In addition, the increasing need for residential facilities has an impact on changing land functions in an area that was originally an infiltration area to become a residential area. De Marrakesh Residential which has a land area of ± 117.025 m2 is a residential area located in the Kecamatan Rancasari of Bandung City. In terms of flood prevention, this residential area already has a retention pond and pumps that drains water into the Cipamokolan river. But in reality there are still puddles that inundate the residential area of De Marrakesh. To deal with this, a flood impact reduction study was carried out by applying rainwater harvesting. In this study, the analysis carried out is the calculation of the planned rainfall, the selection of the type of rain distribution, the calculation of the volume of rainfall, and the estimated calculation of the volume of rainfall that can be captured. From the results of the analysis and calculations, the application of rainwater harvesting can reduce the impact of flooding that occurs in De Marrakesh Residential.
- ItemTHE INFLUENCE OF SLACK LIME TO CLAY TOWARDS OPTIMUM MOISTURE CONTENT (OMC) AND MAXIMUM DRY DENSITY (MDD)(jurnal ilmiah teknologi informasi terapan, 2019) Widyanto, Bambang Eko; Agustian, Yanyan; Setiawan, AsepPeningkatan populasi di Indonesia khususnya pada wilayah Jawa barat telah mengakibatkan perubahan yang cukup signifikan pada bidang tata guna lahan. Area vegetasi yang hijau telah berubah menjadi area-area perumahan, gunung kapur telah ditambang dan hal-hal tersebut mengakibatkan bencana seperti banjir dan longsor pada area yang curam. Penyebab terjadinya longsoran adalah dikarenakan berat tanah lebih berat dari tahanan tanah itu sendiri. Salah satu penyebab hal tersebut adalah tinggi nya limpasan yang terjadi pada daerah hulu DAS dan kemampuan tanah untuk menyerap air. Tanah pada lahan yang digunakan untuk perumahan atau pun pada area yang curam harus lah dipersiapkan pada kondisi maximum dry density (MDD) dan Optimum Moisture Content (OMC) agar bisa menghasilkan kuat geser yang optimum dan dapat menghindarkan potensi terjadinya longsor. Kondisi tanah pada area hulu umum nya terdiri dari kondis lempung yang berasal dari pelapukan batuan dan partikel lain nya. Lempung memiliki pori-pori yang cukup kecil dan cenderung tidak lulus air hingga dapat dijadikan inti bendungan. Hal tersebut mengkibatkan perlu nya analisa untuk membuat campuran komponen yang dapat dikerjakan dan juga dapat membantu lempung untuk meningkatkan pori-pori tanah nya juga mengurangi berat tanah tersebut. Penelitian ini terdiri dari serangkaian pengujian yang terdiri dari beberapa persentasi lempung (CL) dan kapur padam (SL), persentasi nya adalah 95% CL – 5 % SL, 80% CL – 20% SL, 65% CL – 35% SL dan 55% CL – 45% SL. Pengujian ini menghasilkan kesimpulan bahwa semakin tinggi Kapur Padam maka Kepadatan semakin menurun dan semakin menurun kepadatan maka kadar air semakin tinggi.
- ItemPUMP OPTIMATION IN 2D FLOOD AREA MODELLING(2021) Setiawan, Agung; Putra, Rais Haryamanda Syah; Kurniadi, Dedi; Oktaviani, Sintia; Widyanto, Bambang Eko
- ItemSTUDI RESPON DAERAH ALIRAN SUNGAI CIMANYAR TERHADAP BERBAGAI KEJADIAN HUJAN(jurnal ilmiah teknologi informasi terapan, 2019) Hasan, Fuad; Widyanto, Bambang Eko; Siddiq, R.H.B. AshThe Cimanyar River Basin is one of the Cimanuk watersheds. There is a rain and debit recording station with the duration of hours. Based on the data obtained in the field there is a significant difference in the watershed response. The hydrograph of the rainfall event on February 4, 2013 shows the surface runoff in the watershed. While the hydrograph of rainfall events on 27 October 2012 indicates the existence of a subsurface flow mechanism (interflow). To see the watershed response, this study developed a hydrological model with MIKE SHE which was calibrated and validated with measurement discharges at the Cimanyar observation station
- ItemTHE USE OF CERC FORMULA AS LATERAL FORCE OF PILE IN SEA WATER INTAKE’S PILE ANALYSIS(Solid State Technology Volume: 63 Issue: 3, 2020) Widyanto, Bambang Eko; Akbar, Sandy Radhitya; Hasan, FuadOffshore structure is different with on shore structure, in onshore structure the lateral pressure help piles to be more powerful, it different with offshore structure, the lateral pressure decrease safety factor of pile. One of structure which need an offshore design structure is pump house in offshore of island. It need special calculation because it placed in offshore. To calculate the wave pressure, the formula that used is from CERC in Shore Protection Manual. In pile calculation, we use Meyerhof Calculation.