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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil International Conference on Engineering and Technology Development (ICETD) Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Rekayasa Journal of Degraded and Mining Lands Management Jurnal Rekayasa Sipil dan Desain Jurnal Teknik Sipil Briliant: Jurnal Riset dan Konseptual Teras Jurnal Civil Engineering Dimension SIKLUS: Jurnal Teknik Sipil Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Engineering and Scientific Research (JESR) Publikasi Riset Orientasi Teknik Sipil (Proteksi) JURNAL HUTAN TROPIS JUSTICIA SAINS: Jurnal Ilmu Hukum Jurnal Sipil Terapan Jurnal Meteorologi dan Geofisika Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Nemui Nyimah
Dyah Indriana Kusumastuti
Jurusan Teknik Sipil Fakultas Teknik Universitas Lampung Jl. Sumantri Brojonegoro No.1 Bandar Lampung.
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Physics Transportation Other

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Pengaruh Interval Waktu Data Curah Hujan dalam Analisis Intensitas Durasi Frekuensi di Provinsi Lampung Mardiyansyah Mardiyansyah; Ahmad Zakaria; Dyah Indriana Kusumaastuti
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 23, No 2 (2019): Edisi Agustus 2019
Publisher : UNIVERSITAS LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

in a reservoir or river, it is necessary to know the size of the flood discharge plan used as a basis for calculating the size of the canals and their complementary buildings. Troubleshooting using Hydrological analysis, Intensity Duration Frequency (IDF) requires frequency analysis using a series of data obtained from rain data records. The scope of this research covers the area of Lampung Province, namely BMG Radin Inten II station and BMG Maritim Panjang station. From the comparison of the IDF curve analysis between rainfall data for short time intervals and daily rainfall data, the percentage difference between rainfall intensity differences in each duration and at certain return periods is obtained. IDF Curve Analysis for Daily Rain Data uses the Mononobe method, from the results of IDF curve analysis between rainfall data for short time intervals with daily rainfall data at BMG Radin Inten II station there is a difference in the ratio of high intensity up to 3 times or > 300%, whereas in BMG Maritim Panjang station only the difference in ratio > 100%.
Pengaruh Tutupan Lahan terhadap Base Flow Index DAS Way Seputih Provinsi Lampung Adenan Yusuf; Dyah Indriana Kusumastuti; Endro Prasetyo Wahono
Siklus : Jurnal Teknik Sipil Vol. 7 No. 2 (2021)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v7i2.7323

Abstract

Tujuan penelitian ini adalah menganalisis nilai Base Flow Index (BFI) dan debit baseflow DAS Way Seputih; menganalisis nilai Curve Number (CN) composite DAS Way Seputih tahun 2005, 2009, dan 2011; serta menganalisis pengaruh perubahan tutupan lahan terhadap baseflow DAS Way Seputih. Penentuan baseflow tahun 1973-2006 menggunakan Metode RDF (Recursive Digital Filter) terbaik berdasarkan uji kinerja, yaitu Root Mean Square Error (RMSE), R2, dan grafik FDC (Flow Duration Curv) di antara metode Lyne&Hollick, EWMA, Chapman Algorithm, dan Nathan and McMahon. Kemudian Metode RDF terbaik ini dibandingkan dengan Model SCS-CN (Soil Conservation Sevice Curv Number) untuk menentukan baseflow dan BFI tahun 2005, 2009, dan 2011 berdasarkan uji kinerja. BFI DAS Way Seputih tahun 2005, 2009, dan 2011 berturut-turut adalah 0,8178; 0,54225; dan 0,649502. Untuk nilai CN I composite, CN II composite, dan CN III composite tahun 2005 berturut-turut adalah 63,9191; 79,8869; dan 80,1315. Nilai CN I composite, CN II composite, dan CN III composite tahun 2009 berturut-turut adalah 42,7834; 60,8427; dan 83,6676. Sedangkan Nilai CN I composite, CN II composite, dan CN III composite tahun 2011 berturut-turut adalah 66,4066; 81,9460; dan 94,5943. Nilai BFI dipengaruhi oleh debit baseflow dan debit sungai. Debit sungai dipengaruhi oleh curah hujan, sedangkan debit baseflow dipengaruhi oleh perubahan luas tiap jenis tutupan lahan.
The Impact of Changing Storage Area on Flood Magnitude and Occurrence Kusumastuti, D.I.
Civil Engineering Dimension Vol. 14 No. 2 (2012): SEPTEMBER 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (614.656 KB) | DOI: 10.9744/ced.14.2.57-63

Abstract

This study focuses on the impact of combined catchment and storage upon flood occurrences and flood peaks. A significant factor that plays an important role of the combined catchment and storage is the ratio of contributing catchment area to storage area (AC/AS) where the impact significantly shows increasing frequency of storage overflow and flood peaks with the increasing of AC/AS. Some case studies examined in this work, i.e. Way Pegadungan (Lampung, Sumatra) and NagaraRiver (South Kalimantan) catchments show similar behavior. Swamps located on the sides of downstream of Way Pegadungan as well as Nagara River act as storages during flood events. The dyke which was planned to be built increases the ratio of AC/AS significantly as storage area reduced considerably. This has an impact on flood peaks which can increase considerably. The improved understanding of these process controls will be useful in assisting the management of such catchments, particularly to assist in flood prevention and mitigation.
Analysis of Rainfall Characteristicsfor Flood Estimation in Way Awi Watershed Dyah I. Kusumastuti; D. Jokowinarno; C.H. Van Rafii; F. Yuniarti
Civil Engineering Dimension Vol. 18 No. 1 (2016): MARCH 2016
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.862 KB)

Abstract

This study investigates rainfall intensity distribution in Way Awi watershed located in Bandar Lampung, and how their impacts on flood peak and flood hydrographs. Hourly rainfall data is examined to obtain design rainfall intensity and rainfall intensity distribution at rainfall duration from three to eight hours. Rainfall-runoff model, i.e. Rational method is used to calculate flood peak while unit hydrograph method is used to develop flood hydrograph. This study shows that in Way Awi watershed 88.3% to 96.4% of 24-hour rain occurs in three to eight hour durations. In addition, rainfall with three hour duration generates the highest flood peak, followed by four hour duration rainfall. When rainfall duration and design rainfall intensity are the same but rainfall intensity distribution is different, generated flood hydrograph may have different flood peak magnitude and timing. Result of this study is useful for flood analysis and mitigation in Way Awi watershed.
ESTIMASI TINGKAT BAHAYA EROSI DENGAN MENGGUNAKAN METODE USLE DAN ARAHAN KONSERVASI PADA DAS SEMANGKA, LAMPUNG Tommy Arisandy; Slamet Budi Yuwono; Irwan Sukri Banuwa; Endro Prasetyo Wahono; Dyah Indriana Kusumastuti; Teguh Endaryanto
Jurnal Hutan Tropis Vol 11, No 3 (2023): Jurnal Hutan Tropis Volume 11 Nomer 3 Edisi September 2023
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v11i3.17635

Abstract

DAS Semangka merupakan salah satu DAS penting yang ada di WS Semangka, penggunaan lahan di DAS Semangka didominasi oleh pertanian lahan kering campuran dan pertanian lahan kering. Potensi pendayagunaan sumberdaya air DAS Semangka cukup tinggi. Namun, saat ini keberadaan sumberdaya air DAS Semangka juga cenderung mengkhawatirkan, yang disebabkan oleh berbagai faktor seperti misalnya pencemaran, penggundulan hutan, kegiatan pertanian yang mengabaikan kelestarian ekosistem, berubahnya fungsi lahan. Penelitian ini bertujuan untuk menganalisis erosi yang terjadi pada DAS Semangka menggunakan metode USLE berbasis SIG pada wilayah DAS Semangka. Hal ini sangat penting untuk dilakukan agar dapat menjadi bahan pertimbangan untuk pengelolaan DAS Semangka. Metode pelaksanaan penelitian dimulai dengan menentukan batas daerah penelitian di DAS Semangka, menentukan curah hujan tiap wilayah pos hujan dan menentukan nilai erosivitasnya (R) dengan analisis polygon thiessen, selanjutnya melakukan pengolahan data SHP peta erodibilitas tanah (K), Kelerengan (LS) dan penggunaan lahan (CP), lalu penghitungan prediksi erosi dengan rumus USLE dan membuat layout peta hasil pendugaan erosi pada DAS Semangka. Hasil penelitian erosi yang terjadi pada DAS Semangka sebesar 129,69 ton/ha/tahun dengan klasifikasi kelas erosi sangat rendah 23,33%, rendah 20,38%, sedang 19,05%, tinggi 34,85% dan sangat tinggi 2,40%. Upaya penurunan erosi dengan menggunakan Skenario 1 dengan luas tutupan hutan pada DAS Semangka sebesar 30% dari luas DAS yaitu 48.354,10 Ha menurunkan erosi sebesar 51%, Skenario 2 yaitu Kawasan hutan memiliki tutupan lahan berhutan seluas 59.652,19 Ha (42 % dari luas DAS), kondisi ini menurunkan erosi yang terjadi pada DAS Semangka sebesar 59% dan Skenario 3 Kawasan tutupan lahan berhutan melakukan penerapan KTA (Konservasi Tanah dan Air) secara mekanik dengan teras bangku pada lahan pertanian dan sawah dengan kelerangan mulai 25% sampai dengan >45% kondisi ini menurunkan erosi sebesar 72%. Upaya perbaikan DAS dengan melakukan Rehabilitasi Hutan dan Lahan.
Mapping Potential Locations of Reservoir Development Planning Based on Biogeophysical Conditions in Bulok Watershed of Lampung Province Rosidah Amini; Slamet Budi Yuwono; Dyah Indriana Kusumastuti; Melya Riniarti; Irwan Sukri Banuwa; Endro Prasetyo Wahono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 4 (2022): Desember 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i4.671-687

Abstract

Floods and droughts are problems that threaten the success of agricultural crops. The reservoir can be used as a water management system that can anticipate these problems. This study aims to examine the potential location of the reservoir development planning based on biogeophysical conditions in the Bulok Watershed of Lampung Province, which uses the overlay method and weighting and scoring techniques developed by Geographic Information System (GIS). The population covers the entire biogeophysical area of the Bulok watershed, with samples of 4 biogeophysical parameters, namely land cover, slope, soil conditions and geological conditions. The results showed that the distribution of land cover types that dominate in the Bulok watershed is mixed dry land agriculture. The most common slopes are flat to wavy slopes. The soil types that dominates are soils with andesite lithology, basalt, diorite, fine-grained tefra, and coarse-grained tefra. The geological formation that dominates is the Hulu Simpang Formation.  Based on the 4 biogeophysical parameters selected in the study, there are 69 locations with great potential for planning the construction of reservoirs in the Bulok watershed. 20 points are spread over the administrative area of Tanggamus Regency, 23 points in Pringsewu Regency, and 26 points in Pesawaran Regency. Of the 87.670 ha of Bulok watershed area, 14.192 ha is very potential location area.   Keywords:   Biogeophysical Conditions, Potential Locations, Reservoir
Penanganan Rembesan dan Perkuatan Tanah Menggunakan Metode Insitu Test (Pressure Meter Test) Studi Kasus : Proyek Bendungan Margatiga Nora Anggraini; Endro Prasetyo Wahono; Dyah Indriana Kusumastuti
Jurnal Sipil Terapan Vol. 2 No. 2 (2024): November : Jurnal Sipil Terapan
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/jusit.v2i2.434

Abstract

The bearing capacity of the soil is the support of the foundation, where the foundation transmits the loads derived from the weight of the building itself and the loads acting on the building to the surrounding soil. The purpose of this paper is to determine the handling of seepage and soil reinforcement needed in the case study of the Margatiga Dam Project, East Lampung. Based on the results of geological investigations, the Margatiga Dam is composed of a quarter-aged rock layer with a fragment composition of fine sand - gravel, with a soft - hard hardness level and the need for foundation repair. Based on the lithological conditions of the Margatiga Dam Extraction Gate foundation and the Spillway building which are composed of relatively deep and quite porous alluvial sand deposits, this causes the curtain grouting results to be ineffective, therefore it is necessary to change the seepage control design from the Grouting Curtain to the boundary wall. Based on the simulation check in Plaxis Software for Seepage and Excavation Staging, processing was carried out using Secant Pile and Soldier Pile with a depth of 30 meters with a stretch of 140 m and overlapping with Curtain Grouting of Embankment Dam on the left side and 5 m right side. Field PMT results showed that the maximum stress of the rock layer under the spillway foundation was 0.016 MPa and 0.630 MPa.
Pola Curah Hujan di Provinsi Indonesia Saat El-Nino dan La-Nina: Analisis Periodogram FFT dan Lomb Nugraheni, Melly; Zakaria, Ahmad; Wahono, Endro Prasetyo; Kusumastuti, Dyah Indriana; Herison, Ahmad
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 2 (2024)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i2.65646

Abstract

Indonesia is a country affected by the El Nino and La Nina climate anomalies. The provinces of Aceh, Central Kalimantan, and Maluku are three regions representing parts of Indonesia that have a variety of rainfall distribution and climatic conditions. This research was conducted to determine the influence of the El Nino and La Nina climate anomalies on these three regions by looking at the areas that have a dominant influence due to these climate anomalies. The research used BMKG Indonesia rainfall data with a total of 16 rainfall stations and a data range of 22 years. The methods used for modeling are the Fast Fourier Transform (FFT) and Lomb Periodogram to obtain rainfall spectrum data. Then, the amplitude value was obtained, and a comparison of the data from the two methods was carried out to determine the recurrence value and the area with the highest impact due to climate anomalies. The results of data analysis according to the FFT and Lomb Periodogram showed that the highest affected area was the eastern part of Indonesia, namely Maluku Province, with the dominant frequency according to the FFT method being 5.61 years with a PSD of 7.67 mm2 and the Lomb Periodogram 6.06 years with a PSD of 18.64 mm2. Based on the average PSD value, using both FFT and Lomb Periodograms, it also shows that the influence of El Nino and La Nina is greatest in the eastern part of Indonesia; as you move towards the west, this influence decreases. The smallest influence occurred in western Indonesia. This shows that the influence of ENSO is more dominant than the influence of IODM.
SISTEM INFORMASI KUALITAS AIR SUNGAI DI WILAYAH SUNGAI SEPUTIH SEKAMPUNG Anggraini, Witta Putri; Dyah Indriana Kusumastuti; Endro Prasetyo Wahono
BRILIANT: Jurnal Riset dan Konseptual Vol 9 No 4 (2024): Volume 9 Nomor 4, November 2024
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v9i4.2090

Abstract

The WebGis-based water quality information system is designed to facilitate more effective monitoring, management, and storage of water quality data for government agencies and the public. The main objective of this system is to build an information platform on water quality conditions across various regions, making it easier for government agencies to make decisions regarding water quality management and mitigating potential environmental risks. This study analyzed water quality using the Pollution Index (PI) method in the Seputih Sekampung River Basin from 2019 to 2023. The results of the water quality calculations showed that the decline in water quality was predominantly caused by human activities, particularly high levels of E. coli or Total Coliform. This decline was also consistent with changes in land cover in the area. The system development was carried out using the prototyping method and tested using User Acceptance Testing. The study results indicate that the developed system is capable of managing water resource data in Lampung Province and presenting this information to users through a WebGIS interface. Through data integration, it is expected that efforts to protect water quality resources will become more optimal and sustainable.
Evaluasi Kinerja Pembangunan Ruang Praktik Siswa Menggunakan Kurva-S dan Earned Value Anton, Sari; Kusumastuti, Dyah Indriana
Siklus : Jurnal Teknik Sipil Vol. 10 No. 2 (2024): Siklus : Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v10i2.17962

Abstract

Salah satu inisiatif penting untuk meningkatkan kualitas pendidikan vokasi adalah pembangunan ruang praktik siswa di SMKN 9 Bandar Lampung, dengan tujuan untuk meningkatkan fasilitas dan meningkatkan lingkungan belajar siswa. Evaluasi kinerja yang akurat, mengoptimalkan sumber daya dan memastikan penyelesaian tepat waktu dan sesuai anggaran adalah kunci keberhasilan. Metode kurva S dan metode nilai perolehan digunakan untuk mengevaluasi kinerja proyek karena keduanya dapat memberikan analisis kinerja, biaya, dan waktu yang menyeluruh secara bersamaan. Nilai rencana, nilai aktual, biaya aktual, varian rencana, varian biaya, indeks aktual rencana, dan indeks kinerja biaya adalah parameter utama yang digunakan. Tujuan penelitian adalah untuk menilai kemajuan proyek berdasarkan biaya dan waktu serta efisiensi pelaksanaannya. Kegiatan konstruksi dan penyediaan fasilitas pendukung adalah bagian dari proyek, dengan fokus pada pemenuhan jadwal dan anggaran. Salah satu asumsi yang digunakan adalah stabilitas harga material dan tenaga kerja Namun, keterbatasan penelitian termasuk kurangnya data dan faktor eksternal yang mempengaruhi kinerja. Sebagai hasil dari analisis, proyek pembangunan ruang praktik siswa di SMKN 9 Bandar Lampung telah berjalan sesuai rencana dan tim telah memiliki kemampuan untuk menyelesaikan beberapa bagian proyek lebih cepat dari yang direncanakan. Studi ini sangat membantu manajemen proyek konstruksi, terutama dalam hal evaluasi dan optimalisasi kinerja dengan menggunakan pendekatan analisis biaya dan waktu. Diharapkan temuan ini akan menjadi pedoman untuk manajemen proyek pendidikan serupa, meminimalkan biaya dan keterlambatan jadwal, dan membantu meningkatkan kualitas pendidikan di Indonesia.
Co-Authors Adenan Yusuf Afandi . Ahmad Herison Ahmad Zaenudin Ahmad Zakaria Ahmad Zakaria Ahmad Zakaria Ahmad Zakaria Aji Saputra, Aji Amanda, Tiara Maelta Amini, Rosidah Andandaningrum, Della Andriani, Gustin Anggraini, Witta Putri Anton, Sari Aprizal Arianti, Tanti Aristiani, Widya Asep Sukohar Astika Murni Lubis Astriyana, Mega Ayuningsih, Titik Bayu krishna mukti C.H. Van Rafii Candra Hakim Van Rafi’i Christine Wulandari Citra Dewi D. Jokowinarno Dwi Joko Winarno Dwi Joko Winarno Dwi Joko Winarno Dwi Joko Winarno Dwi Joko Winarno Dwi Joko Winarno Dwi Jokowinarno Dwi Jokowinarno Dwi Jokowinarno Dwiyanto, Very ELOK BUDI UTAMI Endro Prasetyo Wahono F. Yuniarti fadhel dzaki sembiring Falah, M. Najmul Fathony, Awal Rifan Febriyani, Febriyani Fieni Yuniarti Fitriya Rahmawati Fridayanto, Syahlan Naufal Gani, Rama Dian Gultom, Winda Maria Rebecca gustin andriani Hardito, Joni Haris Murwadi Hidayat, Kurnia Ryandani Humaidi Humaidi Humaidi Humaidi Humaidi, Humaidi Irwan Irwan Irwan Sukri Banuwa Irwan Sukri Banuwa Jundulloh, Panglima juwita novi yana Kristianto Usman kuncoro, wahyu hadi Kusanti, Nency Dwi M. Najmul Falah Mahardika, Siti Mardiyansyah Mardiyansyah Marfirah Ulfah Maulana Yusuf Maulana Yusuf Mega Astriyana Melya Riniarti Muhamad Angga Wicaksono Muhammad Jazuli Mustofa mukti, Bayu krishna Mustofa, Muhammad Jazuli Mutya Nivitha Nency Dwi Kusanti Nengah Sudiane Niken, Chatarina Nivitha, Mutya Nivitha, Mutya Nora Anggraini Noviani, Erina Nugraheni, Melly Nur Arifaini Ofik Taufik Purwadi Ofik Taufiq Purwadi Okta Ainita Panglima Jundulloh Peranginangin, Imanuel Purwadi , Ofik Taupik Purwadi, Ofik Taufiq Purwadi, Ofik Taupik putri, wardatul aini Rahmawati, Fitriya Rama Dian Gani Rian Alfian Riki Chandra Wijaya Riyo Ardi Yansyah Riyo Ardi Yansyah, Riyo Ardi Riza Muhida Robiyanto Robiyanto Robiyanto, Robiyanto Rosidah Amini S Suharno Samsul Bakri Saputro, Rifki Ananda Sari, Dwi Meyta Sembiring, Fadhel Dzaki Siti Nurul Khotimah Slamet Budi Yuwono Slamet Budi Yuwono Sri Ratna Sulistiyanti Subuh Tugiono Subuh Tugiono, Subuh Suharni Suharni Sumiharni . Suprayitno, Meli Susilowati A Syafri Adi Teguh Endaryanto Titik Ayuningsih Tomi, Muhammad Tommy Arisandy Triyanto Triyanto Ulfah, Marfirah Utami, Elok Budi Very Dwiyanto Wahono, Endro Prsetyo wahyu hadi kuncoro Wardatul Aini Putri Wicaksono, Muhamad Angga Widya Aristiani Wijaya, Riki Chandra Winarno, Dwi Joko Winda Maria Rebecca Gultom Windy Putri Diwantari Yana, Juwita Novi Yuda Romdania Yuda Romdania yulianto, alim Zaldi Ronald