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All Journal Jurnal Ilmu Pertanian Indonesia J-Sil (Jurnal Teknik Sipil dan Lingkungan) Bumi Lestari Jurnal Ilmu Lingkungan Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Keteknikan Pertanian JURNAL ANALISIS KEBIJAKAN KEHUTANAN Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Ecogreen Jurnal Rekayasa Sipil Jurnal Irigasi LIMNOTEK - Perairan Darat Tropis di Indonesia Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JUTEKS Jurnal Sosial Ekonomi Pekerjaan Umum JURNAL TEKNIK HIDRAULIK JuTEkS (Jurnal Teknik Elektro dan Sains) International Journal Engineering and Applied Technology (IJEAT) J-Sil (Jurnal Teknik Sipil dan Lingkungan)

Asep Sapei

Unknown Affiliation

Author-ID : 371271

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation Other

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Kajian Kapasitas Lentur Balok Beton Bertulangan Bambu Petung Reni Nuraeni; Meiske Widyarti; Asep Sapei
Jurnal Teknik Sipil dan Lingkungan Vol. 3 No. 1: April 2018
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University

Reinforced concrete generally use steel reinforce material. Steel is quarry material that someday be exhausted and relatively high price. Hence,need to find the substitution material which a more affordable with the structure power that equivalent. Bamboo can be assessed solution as a substitution material of steel reinforce. This research looked at a bending capacity of the bamboo petung reinforce concrete beams with notch is 2 cm and 3 cm. The sectional form of the reinforce bamboo of arch ( 1 / 4 ) circle and ( 1 / 2 ) circle. Tensile testing sample of bamboo obtained average value of bamboo tensile strength is 288.81 mpa .A mixture of concrete f‘c = 17.5 MPa with the mixtures by virtue of SNI 7394-2008 .The testing results of compressive strength at the age of 3 days concrete 9.837 MPa . Sample beams made about 9 type reinforcement .From the flexural testing at the age of 28 days type reinforcement TB4 have flexural strength of 10.167 MPa value flexural approach strength steel reinforcement beams of 12.00024 Mpa.Keywords : bamboo petung, flexural beams, reinforcement bamboo

Analisis Potensi Air Sungai Pada Embung 190 Di PG. Bungamayang PTPN VII, Lampung Melvin Classy Alexander Tarigan; Asep Sapei
Jurnal Teknik Sipil dan Lingkungan Vol. 3 No. 2: Agustus 2018
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University

Air merupakan elemen yang sangat penting bagi keberlanjutan hidup makhluk hidup setiap harinya. Air juga digunakan untuk irigasi pertanian. Penelitian ini bertujuan untuk menganalisis potensi air sungai di PG. Bungamayang PTPN VII, Lampung. Penelitian ini terbatas pada embung 190 PG. Bungamayang PTPN VII yang merupakan bagian dari DAS Tulang Bawang yang secara geografi terletak pada 104° 52' 07" BT dan 04° 35' 24" LS. Pada penelitian ini, analisis SWAT dilakukan menggunakan ArcSWAT 2012 sebagai plug-in pada ArcGIS 10. Pada simulasi ini, terdapat 4 tahapan proses, yaitu delineasi daerah DAS, pembentukan HRU, pengolahan data dan simulasi SWAT, serta proses visualisasi. Untuk proses validasi, digunakan perbandingan antara debit simulasi SWAT dengan debit observasi dari tanggal 20 Maret hingga 5 April 2014. Hasil simulasi SWAT menunjukan debit rata-rata sebesar 0.066 m3/s. Sedangkan untuk debit observasi, diperoleh debit rata- rata sebesar 0.043 m3/s dengan koefesien korelasi sebesar 0,897. Potensi air sungai dapat ditunjukan dengan debit rataan tahunan permodelan SWAT dengan debit rataan maksimum tahunan sebesar 0.143 m3/s pada bulan April and debit rataan minimum tahunan sebesar 0.018 m3/s yang terjadi pada bulan Septembar sehingga diperoleh total potensi air sungai pada Embung 190 di PG Bungamayang PTPN VII, Lampung sebesar 2 373 950.55 m3 tiap tahunnya.Kata kunci: DAS Tulang Bawang, HRU, potensi air sungai, SWAT

Pemampatan Tanah Lunak pada Berbagai Kedalaman Prefabricated Vertical Drain di Reklamasi Pelabuhan Belawan, Kota Medan: Compaction of Soft Soil at Various Depths Prefabricated Vertical Drain in The Reclamation of Belawan Port, Medan City Kamal Hasan Iskandar; Asep Sapei
Jurnal Teknik Sipil dan Lingkungan Vol. 7 No. 1: April 2022
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.7.1.1-16

Proyek reklamasi Pelabuhan Belawan tahap II direncanakan sebagai area penyimpanan kontainer. Berdasarkan tes penyelidikan tanah (SPT test), tanah pada lokasi ini diklas-ifikasikan sebagai tanah lunak dengan kedalaman 11 m. Oleh karena itu, penting untuk meningkatkan stabilitas tanah karena tanah tersebut memiliki kompresi potensial yang besar. Metode yang digunakan adalah Preloading dan Prefabricated Vertical Drain (PVD). Kedalaman PVD yang dipilih memiliki perbedaan dampak dan pengaruh terhadap performansinya. Penelitian ini dilaksanakan untuk menentukan kedalaman PVD yang optimum untuk menahan kompresi dan waktu setlemen dengan derajat konsolidasi sebesar 90%. Variasi kedalaman PVD yang digunakan adalah 0%, 25%, 50%, 75% dan 100% dari kedalaman tanah. Hasil analisis menunjukkan bahwa lokasi yang potensial terjadi subsiden adalah 2.4 m. Tanpa PVD, membutuhkan waktu 50.670 hari untuk mencapai 90% konsolidasi. Sedangkan dengan PVD, hanya membutuhkan 66-69 hari tergantung dari prosentase kedalaman PVD. Semakin dalam PVD, semakin kecil kom-presi residunya. Kedalaman 50% PVD merupakan yang optimum berdasarkan waktu dan residu kompresi dengan total biaya sebesar Rp 7,09 Milyar.

ANALISIS STATUS KEBERLANJUTAN PENGELOLAAN AIR BAKU DI KABUPATEN KONAWE PROVINSI SULAWESI TENGGARA Ridwan Adi Surya; M. Yanuar J. Purwanto; Asep Sapei; Widiatmaka Widiatmaka
Bumi Lestari Journal of Environment Vol 14 No 2 (2014)
Publisher : Environmental Research Center (PPLH) of Udayana University

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

The water supply to support the development and human needs need to be guaranteed forthe sustainable condition. Decreased water availability and increased water demand hasoccurred in Konawe Regency Southeast Sulawesi Province. In order to the management forwater supply in Konawe Regency can take place in a sustainable condition, it is necessary toapply the concept of sustainable development through the conservation of water resources.This study aims to analyze the sustainability of the status of water management for sustainablewater supply in Konawe Regency, and analyze the important factors that affect the sustainabilityof water management in the Konawe Regency. The analytical method used is a MultiDimensional Scaling called Rap-Konawe. The results are expressed in terms of index andstatus of sustainability. The analysis on the five dimensions indicate that the ecologicaldimension is sustainable enough (52.36%), economic dimension is less sustainable (36.93%),social dimension is less sustainable (34.16%), technology dimension is less sustainable(35.39%), and institutional dimension is less sustainable (35.39%). There was 12 attributesneed to be taken care immediately because of the sensitive affect on the increase of index andsustainability status.

Model Kelembagaan Pengelolaan DAS Aesesa Flores, Provinsi NTT Nicolaus Noywuli; Asep Sapei; Nora H. Pandjaitan; Eriyatno Eriyatno
Jurnal Ilmu Lingkungan Vol 16, No 2 (2018): Oktober 2018
Publisher : School of Postgraduate Studies, Diponegoro Univer

ABSTRAKPengelolaan DAS Aesesa Flores di Provinsi Nusa Tenggara Timur menjadi penting dan prioritas karena isu daerah kepulauan, kesulitan mendapatkan air bersih, ketersediaan pangan dan kemiskinan, serta keterbelakangan pembangunan. Keberhasilan pengelolaan DAS yang berkelanjutan sangat ditentukan oleh kinerja kelembagaannya. Penelitian yang dilaksanakan pada bulan April-Mei 2018 ini bertujuan untuk menganalisis peran kelembagaan ditinjau dari aspek kendala, kebutuhan program dan actor/lembaga yang berperan dalam pengelolaan DAS Aesesa Flores. Data yang digunakan adalah data primer dan sekunder, khusus data primer diperoleh dari 7 (tujuh) orang pakar melalui pengisian kuesioner. Metode analisis data menggunakan pendekatan ISM (Interpretative Strutural Modellling) untuk menentukan factor kunci yang paling berperan dalam pengelolaan region hulu, tengah, dan hilir DAS Aesesa Flores. Hasilnya bahwa pengelolaan DAS AF yang berkelanjutan masih menghadapi 9 kendala pokok, membutuhkan 11 program, terdapat 5 aktor utama yang berperan dalam pengelolaan DAS AF yakni BPDAS Benain Noelmina, Forum DAS NTT, BWS NTT2, Masyarakat dan LSM. Pengelolaan DAS AF masih bersifat eksploitasi, belum mengarah pada pembangunan berkelanjutan dan tidak didukung dengan kelembagaan yang mumpuni sehingga diperlukan segera upaya untuk mengatasi kendala, implementasi program pokok, dan peningkatan peran dan kordinasi actor/pelaku pengelolaan DAS AF yang berkelanjutan.ABSTRACTThe management on the Aesesa Flores (AF) watershed is important, particularly because of the imminent issues of clean water needs, food securities and a poverty rate of the local communities. The success of this management is influenced by the institution and governance in the AF watershed. This study was done from April to May 2018, and the main objective of the study is to determine the key factors that related to the AF watershed management. There were three main elements that were analyzed in this study, namely: (1) the key actors; (2) the key requirements; and (3) the key hindrances that influencing the AF watershed management. This study was using Interpretative Structural Modeling (ISM) to determine the key factors in each element. The data was collected primarily from an in-depth interview with 7 experts in the field of watershed management. The results from this study showed that there were 5 key actors that have the main influence in the AF watershed management, which are: (1) BPDAS (Governmental Watershed Institution); (2) Forum DAS (community forum of AF watershed); (3) BWS NTT2 (Regional River Management Institution); (4) Local communities; and (5) NGO (Non-Government Organization). The results from this study also suggested that the AF watershed management was explorative, thus may lead to unsustainable natural resources usage. Therefore, this study suggested that in order to achieve a sustainable watershed and natural resources usage, the relevant actors need to collaborate together to create a balance action plan that protects the environment, promoting economic growth and social affluence.Keywords: Aesesa Flores watershed, Interpetative Structural Modelling, watershed institution and governanceSitasi: Noywuli, N., Sapei, A., Pandjaitan, N.H dan Eriyatno (2018). Model Kelembagaan Pengelolaan DAS Aesesa Flores, Provinsi NTT. Jurnal Ilmu Lingkungan, 16(2),136-146, doi.org/10.14710/jil.16.2.136-146

Study on the Soil Strength and Density Relationships of Latosol and Red Yellow Podzolic Soils Asep Sapei; E. Namaken Sembiring; Gatot Pramuhadi
Jurnal Keteknikan Pertanian Vol. 14 No. 1 (2000): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.014.1.%p

The soil strength characteristic, which is usually e.xpressed bycohesion and internal piction, is as basic data for applying farmmachineries/equipments and farm structures. The objective of this research is to study the soil strength and density relationships of latosol and red yellowish podzolic soil. This research was conducted by standard compaction test and soil strength test (uniaxial, direct shear and triaxiul).

Perubahan Pola Penyebaran Kadar Air Media Tanam Arang Sekam dan Pertumbuhan Tanaman Kangkung Darat (Ipomoea reptans Poir.) pada Pemberian Air Secara Terus Menerus dengan Irigasi Tetes Asep Sapei; Irma Kusmawati
Jurnal Keteknikan Pertanian Vol. 17 No. 2 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.017.2.%p

Drip/trikle irrigation is an irrigation method, which gives high efficiency, high effectivity and assuraes high productivity/yield. This method, is often used for hortivulture and vegetable. The objectives of this research is to study the effect of drip irrigation by continuous water application using 1 and 2 emitters on water distribution and crop growth.The result show that irrigation water by using 2 emitter was spread horizontally more, gave taller crops and more leaves that that using 1 emitter. In general, the effect of continuous water application was beter than intermittent water application.

Analisis Debit Sungai dengan Menggunakan Model SWATpada DAS Cipasauran, Banten Maulana Ibrahim Rau; Nora Pandjaitan; Asep Sapei
Jurnal Keteknikan Pertanian Vol. 3 No. 2 (2015): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

Total water demand at non industrial and industrial region in Cilegon is increasing. With its water production capacity of 2,000 l/s, PT Krakatau Tirta Industri (KTI) cannot fulfill the amount number of demand from the industrial and domestic sectors at Cilegon. To cover the shortage of water supply of ±600 l/s, PT KTI requires taking water from Cipasauran Watershed. The objective of this study was to analyze river discharge of Cipasauran Watershed using SWAT model. Input data such as soil characteristics, climate data, landuse, and hydrology data at the area of the watershed were gathered and put at the data input file. In SWAT simulation, 4 processes were done, i.e. watershed delineation, hydrological response unit (HRU) forming, data process and SWAT simulation, and visualization process. The result showed that the daily and monthly calibration process crossed 84% and 83% with the 95PPU area, with daily and monthly p-factor value of 0.84 and 0.83. Thus, calibrated model result was valid, though R2 and NS value were not satisfied. Using the validated SWAT model, the daily discharge in Cipasauran Watershed was about 0 - 3.309 m3/s, whereas the monthly discharge was 0.648 - 3.266 m3/s. This showed that daily and monthly PT KTI’s water demand of 0.6 m3/s were fulfilled about 98.22% and 100%. Within the future time, the SWAT model could be potentially used as an assessment for predictive scenarios. However, to gain optimum results, well-observed and precise data is highly required, especially for such calibrations and validations.

EVALUASI STRUKTUR GEDUNG X DI JAKARTA BERDASARKAN SNI 03-1726-2012 KETAHANAN GEMPA UNTUK STRUKTUR GEDUNG Sayed Ahmad Fauzan; Erizal Erizal; Asep Sapei
Rekayasa Sipil Vol 4, No 2 (2015)
Publisher : Universitas Mercu Buana

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

Wilayah Jakarta berada pada zonasi gempa menengah berdasarkan peta zonasi gempa 2010 yang dipublikasikan oleh Pusat Penelitian dan Pengembangan Pemukiman (PUSKIM), Kementrian Pekerjaan Umum. Tujuan penelitian ini adalah merekomendasikan perkuatan struktur pada eksisting gedung X di Jakarta, agar ketika gempa datang, struktur gedung tersebut tetap mampu memikul beban ultimit. Objek penelitian merupakan gedung kategori high rise building, memiliki jumlah lantai lebih dari 10, dibangun sebelum tahun 2010, berlokasi pada kelas situs tanah lunak dan secara visual terindikasi adanya kerusakan pada elemen struktur. Pemodelan struktur gedung X didesain dan dianalisis menggunakan program ETABS. Pembebanan gempa diberikan secara dinamik menggunakan prosedur analisis spektrum respons ragam. Hasil analisis story drift menunjukan bahwa gedung X dinyatakan aman terhadap kinerja batas ultimit yang telah dihitung berdasarkan pedoman gempa SNI 03-1726-2012. Nilai maksimum simpangan antar lantai pada gedung X untuk arah-x sebesar 68,60 mm dan arah-y sebesar 101,2 mm. Bagaimanapun, hasil analisis struktur pemodelan gedung X pada ETABS menunjukkan bahwa terdapat beberapa elemen balok dan kolom yang membutuhkan perkuatan struktur. Perkuatan elemen balok direncanakan menggunakan CFRP yang dihitung keamanannya berdasarkan pedoman ACI 440.2R-8 Perkuatan elemen kolom direncanakan menggunakan Concrete Jacketing yang dianalisis melalui section designer pada program ETABS dan dihitung keamanannya berdasarkan pedoman SNI 03-2847-2013.

Kebijakan Pengembangan Budidaya Tanaman Bambu untuk Pengelolaan Berkelanjutan DAS Aesesa Flores Nicolaus Noywuli; Asep Sapei; Nora H. Pandjaitan; Eriyatno Eriyatno
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 9 No 4 (2019): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.9.4.946-959

The existence of Aesesa Flores (AF) watershed is very important for people in Ngada and Nagekeo Regency of Flores island. The AF watershed provides water, land use, economic and other environmental services. However, the excessive exploitation is a major threat for the existence of the AF watershed. The degradation of the AF watershed function such as reduction in river debit, increase of critical land, land use change as well as the problem of poverty. The upstream area is intended as a conservation area where Watu Ata nature preservation park is located, the bamboo forest and Bajawa as the capital city of Ngada Regency. The downstream area is not only as capital city of Nageko Regency but also as paddy field area. One of the activity to improve the watershed function is through a comprehensive and sustainable management policy design based on characteristics and carrying capacity of the AF watershed. This research was conducted in April-May 2018 and the the purpose of the study is to analyzed key factors and establishing an alternative for sustainable management policy development of AF watershed using a prospective method. This study using mainly primary data obtained from the seven local experts through the filling of the questionnaire. The result shows that there are 22 attribute factors and it identified as 10 key factors. The main two key factors are bamboo cultivation, processing technology of bamboo, enlargement of bamboo cultivation area and practicing the soil and water conservation technique. The 10 key factors then become input for designing the management policy of AF watershed. Bamboo become the dominant and key factor because bamboo could be developed into biomass energy plant and it serves social, economic and ecological values for the local people of Ngada and Nagekeo Regency. Bamboo cultivation has a good prospect financially for the local people.

Co-Authors . Erizal ., Apip Ahmad Fausan Akmal Ikhsan Maulana Allen Kurniawan Arif Yusron Afifi Arya Hadi Dharmawan D.S, Made Desrial Dewi, Endang Purnama Dzulfiqar, Muhammad Fakhri E. Namaken Sembiring Eriyatno . Erizal , Gatot Pramuhadi Hariansyah, M. Hermawan, FX Irma Kusmawati Iskandar, Kamal Hasan Kamal Hasan Iskandar M Yanuar J. Purwanto M. Hariansyah M. Yanuar J Purwanto M. Yanuar J. Purwanto M. Yanuar J. Purwanto M. Yanuar J. Purwanto Made D.S Maulana Ibrahim Rau Meiske Widyarti Meiske Widyarti Melvin Classy Alexander Tarigan Muhammad Fauzan Muhammad Hasjim Bintoro Djoefrie Hasjim Bintoro Djoefrie Muzhaffar Harits Namaken Sembiring Nicolaus Noywuli Niels vuegen Niels vuegen Nora H. Pandjaitan R. P.A, Setiawan Radite Pas Reni Nuraeni Reni Nuraeni, Reni Ridwan Adi Surya Said Karim Saputri, Utamy Sukmayu Sayed Ahmad Fauzan Sayed Ahmad Fauzan Sayed Ahmad Fauzan, Sayed Ahmad Setiawan R. P.A Soeharsono - Sutoyo Tarigan, Melvin Classy Alexander Tieneke Mandang Utami, Nurya Wawan Hermawan Widiatmaka Yazid Ismi Intara Yuli Suharnoto Zuzy Anna

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