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Penentuan Metode Intensitas Hujan Berdasarkan Karakteristik Hujan dari Stasiun Pengamat Hujan Disekitar Kecamatan Karawang Timur Melisa Permatasari; M. Candra Nugraha; Etih Hartati
Jurnal Serambi Engineering Vol 5, No 1 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i1.1603

The rain intensity is the high rainfall in unit of time. The length of rain will be reversed by the amount rain intensity. The shorter time the rain lasts, the greater of the intensity and re-period of its rain. The value of rain intensity is required to calculate the flood discharge plan on the drainage system planning area in East Karawang district. Determining the value rain intensity is required the maximum daily rainfall data obtained from the main observer stations in the Plawad station planning area. The method of determination rain intensity analysis can be done with three methods: Van Breen, Bell Tanimoto and Hasper der Weduwen. Selected method is based on the smallest deviation value. Determination deviation value is determined by comparing rain intensity value of Van Breen method, Bell Tanimoto, Hasper der Weduwen. By comparing rain intensity value of the Van Breen method, Bell Tanimoto, Hasper der Weduwen with the results of calculating three methods through the method approach Talbot, Sherman and Ishiguro. Calculation results show that the method of rain has smallest deviation standard is method Van Breen with Talbot approach for rainy period (PUH) 2, 5, 10, 25, 50 and 100 years.

Hubungan Perubahan Tata Guna Lahan dengan Debit Air Limpasan pada Kawasan Hunian Pantai Indah Kapuk 2 Alfianabila Yusfiaka; Etih Hartati; M. Candra Nugraha
Jurnal Serambi Engineering Vol 5, No 1 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i1.1598

The construction of the residential and commercial area of Pantai Indah Kapuk (PIK) 2 Cluster “D” is located in the part of two sub-district, which is Sub-district of Kosambi and Sub-district of Teluknaga. PIK 2 Cluster “D” has an area of 508,59 Ha. With the construction of PIK 2 Cluster “D”, there will be a change of land use and an enchancement of run off water. The relationship between the change of land use and the enhancement of run off water can be seen from run off peak deviation for reset time T year (Qr) on existing condition with planning condition after the change of land use. The method used is the rational method which is estimating run off peak. There is an enhancement off run off coefficient value (C) on existing condition about 0,46 and 0,81 on planning condition which causing an enhancement off run off peak in planning area as the effect of the change of land use as Q = 87,59 m3/second. The enhancement of run off coefficient value as the effect of the change of land use is directly proportional with the enhancement of run off peak in case study residential and commercial area of PIK 2 Cluster “D”.

Analisis Karakteristik Curah Hujan pada Kawasan Hunian dan Komersial Pantai Indah Kapuk (PIK) 2 Cluster “C” Nur Afifah Sari; Etih Hartati; M. Candra Nugraha
Jurnal Serambi Engineering Vol 5, No 1 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i1.1600

Based on the hydrological cycle, one of the main water sources is rainwater. weather or climate conditions that occur will greatly affect the nature and condition of a rain or rainy season. On a global scale, the existence of water naturally is constant, only occurs in variations both in time and space on a regional scale. Analysis of the rainfall characteristics of Pantai Indah Kapuk (PIK) residential and commercial areas 2 Cluster "C" in Tangerang Regency, Banten Province, is for to find out the intensity of rainfall used for drainage planning. The daily rainfall data used includes 5 rain catching stations with a duration of 25 years (1994 - 2018). The Van Breen method is used to process rainfall data within a certain period into rainfall intensity with various times for drainage planning used. In the planning of drainage channels the rainfall return period used is PUH 2 for tertiary lines with selected rainfall data of 192 mm / day and PUH 5 for secondary lines with selected rainfall data of 219 mm / day. The IDF curve shows that rainfall intensity is affected by the time and return period of rainfall, where the shorter the rainfall time and the greater the return period of rainfall, the higher the intensity of rainfall produced.

Identifikasi Penentuan Skala Prioritas Penanganan Genangan Atau Banjir Di Kecamatan Karawang Barat Trisha Ajeng Larasaty; M. Candra Nugraha; Etih Hartati
Jurnal Serambi Engineering Vol 5, No 4 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i4.2318

West Karawang District is a center of local activities with a service scope the whole Karawang Regional with most populous region by 142.509 persons. Based on Karawang Regional Spatial Plans Year 2011 – 2031, West Karawang Sub-district is a flooded vulnerable area when rain season. That area is along the Citarum River stream with. Priority scale determination of flood is done with comparison method of the existing flood condition with the parameters in Peraturan Menteri Pekerjaan Umum dan Perumahan Rakyat No.12 Tahun 2014 tentang Penyelenggaraan Sistem Drainase Perkotaan. There were 13 flood points in West Karawang District with the highest priority scale, Tanjungpura Sub-District. In Tanjungpura Sub-District, there are 3 flood points with a height of 50-30 cm, 1 Ha of flood area, and the length of flood lasts for 10 hours. The puddle is located in a densely populated residential area which causes a lot of losses to residents.

Kajian Pengaruh Kadar dan Ukuran Kapur dalam Netralisasi Potensi Keasaman Tailing dari Kegiatan Pertambangan Emas Plucheria Pritta Aquila; Candra Nugraha
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5576

AbstractMineral mining activities will leave waste rock known as tailings, which has small particle sizes and can trigger an oxidation reaction of the sulfide minerals contained therein and produce AMD. Laboratory tests have been carried out to determine the effect of the additional lime in terms of rate and particle size to neutralize the acid water formed through qualitative and quantitative mineral testing and static geochemical testing for various combinations of lime rates and sizes. This study used lime with a CaO content of 90.9% and tailings with a sulfur content of 4.88%. Subsequently, the pasta pH-EC, ABA, and NAG tests were conducted on a mixture of lime and tailings with lime sizes ranging from 8-16 to 50-100 mesh and a lime: tailings ratio of 2.5 to 15 kg/ton tailings. The test results show lime with a size of 50–100 mesh with a lime: tailings composition of 15 kg/ton tailings provides the most optimal effect in neutralizing potential acidity from tailings indicated by a pH value of 7.18. This study is expected to provide input in the management of tailings in mining to avoid acidic water which has the potential to dissolve metal content in tailings that have a negative impact.Keywords: AMD, lime content, grain size, Ph, tailing

Kajian Pengaruh Kadar dan Ukuran Kapur dalam Netralisasi Potensi Keasaman Tailing dari Kegiatan Pertambangan Emas Plucheria Pritta Aquila; Candra Nugraha
Jurnal Serambi Engineering Vol 8, No 1 (2023): Januari 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i1.5576

AbstractMineral mining activities will leave waste rock known as tailings, which has small particle sizes and can trigger an oxidation reaction of the sulfide minerals contained therein and produce AMD. Laboratory tests have been carried out to determine the effect of the additional lime in terms of rate and particle size to neutralize the acid water formed through qualitative and quantitative mineral testing and static geochemical testing for various combinations of lime rates and sizes. This study used lime with a CaO content of 90.9% and tailings with a sulfur content of 4.88%. Subsequently, the pasta pH-EC, ABA, and NAG tests were conducted on a mixture of lime and tailings with lime sizes ranging from 8-16 to 50-100 mesh and a lime: tailings ratio of 2.5 to 15 kg/ton tailings. The test results show lime with a size of 50–100 mesh with a lime: tailings composition of 15 kg/ton tailings provides the most optimal effect in neutralizing potential acidity from tailings indicated by a pH value of 7.18. This study is expected to provide input in the management of tailings in mining to avoid acidic water which has the potential to dissolve metal content in tailings that have a negative impact.Keywords: AMD, lime content, grain size, Ph, tailing

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