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Feril Hariati
Universitas Ibn Khaldun Bogor
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Transportation

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Journal : Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil

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Perlindungan Tebing Sungai Ciliwung dengan Dinding Kantilever Ruas Kampung Legok Nyenang, Kabupaten Bogor Fadli, Muhamad; Hariati, Feril; Chayati, Nurul; Taqwa, Fadhila Muhammad Libasut
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 5 No. 1 (2021)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v5i1.4582

Abstract

ABSTRAKTebing sungai merupakan daerah yang rawan terhadap erosi yang diakibatkan oleh aliran air. Erosi yang berlangsung terus menerus mengakibatkan longsor. Secara umum, jenis tanah di Kabupaten Bogor didominasi oleh latosol yang mudah erosi, selain itu dikarenakan curah hujan yang tinggi dan juga meningkatkan risiko longsor. Salah satunya adalah kejadian longsor pada tebing Sungai Ciliwung pada ruas Kampung Legok Nyenang RT.01//03, Desa Leuwimalang, Kecamatan Cisarua. Panjang longsoran mencapai 27 meter dengan ketinggian 10,20 meter. Struktur dinding penahan tanah diperlukan untuk mencegah terjadinya longsor yang lebih luas lagi. Mempertimbangkan kondisi lereng dan parameter fisis tanah, maka direncanakan dinding penahan tanah jenis kantilever untuk wilayah ini. Hasil analisis metode Mononobe-Okabe menunjukkan nilai keamanan dinding penahan tanah terhadap geser sebesar 0,36, dan terhadap guling sebesar 0,21, angka keamanan tersebut lebih rendah dibandingkan angka keamanan yang disyaratkan, yaitu 1,5 dengan demikian dinding penahan tanah rencana tidak kuat menahan tekanan tanah yang ada di belakangnya. Oleh karena itu, kekuatan dinding sepenuhnya dialihkan ke tanah dasar, dengan menggunakan fondasi bored pile. Hasil analisis daya dukung tanah, diperoleh nilai kapasitas ultimit aman (qs)sebesar 223,93 kN/m2 yang lebih besar dibandingkan nilai total beban vertikal, yaitu 204,52 kN/m2, sedangkan kapasitas ijin satu fondasi mencapai 569.89 kN.Kata Kunci: Sungai Ciliwung, tebing, longsor, dinding penahan tanah, kantileverABSTRACTRiverbanks as areas prone to erosion caused by water flow. Continuous erosion causes landslides. In general, soil types in Bogor Regency are dominated by latosols which are easily eroded, apart from that it is due to high rainfall and also increases the risk of landslides. One of them is a landslide incident on the cliffs of the Ciliwung River on the section of Legok Nyenang RT.01 / 03, Leuwimalang Village, Cisarua District. The length of the landslide reached 27 meters with a height of 10.20 meters. The structure of the retaining wall is needed to prevent more extensive landslides. Considering the slope conditions and physical parameters of the soil, a cantilever-type retaining wall is chosen for this area. The results of the analysis Mononobe-Okabe method show that the safety value of the retaining wall against shear is 0.36, and against rolling is 0.21, This safety figure is lower than the required safety figure, which is 1.5, thus the retaining wall of the planned soil is not strong enough to withstand the ground pressure behind it. Therefore, the strength of the walls is completely transferred to the subgrade, using a bored pile foundation. The results of the soil bearing capacity analysis showed that the ultimate safe capacity (qs) value was 223.93 kN /m2 which was greater than the total vertical load value, which was 204.52 kN /m2, while the permitted capacity of one foundation reached 569.89 kN.Keywords: Ciliwung River, cliffs, landslides, retaining walls, cantilever.
Kajian Konseptual Pemecah Gelombang Hariati, Feril; Taqwa, Fadhila Muhammad Libasut; Alimuddin, Alimuddin
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 5 No. 1 (2021)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v5i1.4745

Abstract

ABSTRAKPemecah gelombang selama ini hanya dikenal sebagai salah satu struktur pelindung pantai terhadap erosi dan abrasi. Meskipun demikian ada fungsi lainnya, yaitu sebagai pelindung daerah pelabuhan dari gangguan gelombang. Pemecah gelombang memiliki kemampuan mengurangi tinggi gelombang dengan cara memecahkan gelombang melalui pori-pori batuan penyusunnya. Tulisan ini bertujuan untuk melakukan tinjauan literatur terhadap jenis dan fungsi pemecah gelombang, serta aplikasi pemecah gelombang di Indonesia. Dalam tulisan ini dikemukakan 2 (dua) jenis pemecah gelombang, yaitu: pemecah gelombang tenggelam, dan pemecah gelombang tidak tenggelam serta solusi alternatif berupa penggunaan pemecah gelombang terapung.Kata Kunci: Pemecah gelombang, pelindung pantai, aplikasi pemecah gelombang.ABSTRACTBreakwaters are known as one of the coastal protection structures against erosion, abrasion, and protection of the port area from wave disturbances. The breakwater can reduce wave height by breaking the wave through the pores of the constituent rock. This paper aims to conduct a literature review on the types and functions of breakwaters, as well as the application of breakwaters in Indonesia. In this paper, 2 (two) types of breakwaters are discussed: submerged breakwater, and detached breakwater. An alternative solution is proposed, a floating breakwater.Keywords: Breakwater, coast protection, breakwater application.
TANTANGAN PEMBANGUNAN JALAN PADA LINGKUNGAN PANTAI Hariati, Feril; Aryanti, Dini; Hayati, Noor Ida
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 1 No. 1 (2017)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v1i1.4755

Abstract

ABSTRAKSempadan pantai merupakan kawasan yang secara undang-undang merupakan kawasan lindung yang memiliki fungsi utama untuk menjaga kelestarian lingkungan hidup. Pembangunan di kawasan pantai tidak dapat dihindari dan seringkali melanggar batas-batas sempadan. Jalan sebagai salah  satu  infrastruktur  penting  terkadang dibangun di kawasan pantai dan berada dalam batas sempadan pantai. Hal itu tidak melanggar peraturan yang sudah ada, karena fungsi jalan di kawasan pantai adalah sebagai jalan masuk dan jalan evakuasi bila terjadi bencana. Akan tetapi dalam perencanaannya, kondisi lingkungan pantai seringkali diabaikan, akibatnya  jalan menjadi capat rusak. Oleh karena itu dalam perencanaan jalan pesisir perlu diperhatikan aspek keilmuan teknik pantai, seperti pengetahuan mengenai gelombang, pasang surut, transport sedimen, agar jalan yang dibangun mampu memenuhi syarat kelestarian fisik dan fungsi jalan.Kata kunci: sempadan pantai, pantai, pesisir, jalan pesisirABSTRACTCoastal borders are areas that are legally protected areas that have the main function of preserving the environment. Development in coastal areas is unavoidable and often breaches boundaries. Roads as one of the important infrastructures are sometimes built in coastal areas and are within the coastal boundary. This does not violate existing regulations, because the function of roads in the coastal area is as an entrance and evacuation route in the event of a disaster. However, in its planning, the condition of the coastal environment is often neglected, as a result of which the road can be quickly damaged. Therefore, in the planning of coastal roads, it is necessary to pay attention to the scientific aspects of coastal engineering, such as knowledge of waves, tides, sediment transport, so that the roads built can meet the physical preservation and function requirements of the road.Keywords: coastal boundaries, beaches, coasts, coastal roads
Kajian Intrusi Air Laut akibat Backwater di Muara Sungai Citanduy Hariati, Feril; Taqwa, Fadhila Muhammad Libasut; Qonita, Nadhira Shofa
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 6 No. 2 (2022)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v6i2.7288

Abstract

ABSTRACTThe Citanduy River Estuary is a coastal area that has the potential to experience seawater intrusion that occurs due to the influence of tides at the river mouth. Seawater intrusion generally has an impact on the need for clean water which is increasingly difficult, because groundwater has been contaminated with seawater. Seawater intrusion that occurs is getting longer and has an impact on agricultural land in the Citanduy watershed. This study aims to predict the length of seawater intrusion due to backwater using HEC-RAS 4.0 software, as well as to analyze the water level profile and backflow that occurs in the Citanduy River. Based on the analysis that has been carried out, the predicted length of seawater intrusion under normal conditions in 2017 and 2050 are 2.57 km and 3.50 km, respectively, the predicted length of seawater intrusion at minimum conditions in 2017 and 2050, respectively. are 2.03 km and 2.57 km, and the predicted length of seawater intrusion at maximum conditions in 2017 and 2050 are 2.57 km and 3.50 km, respectively. Keywords: Seawater Intrusion, Backwater, HEC-RAS 4.0ABSTRAKMuara Sungai Citanduy merupakan kawasan pesisir yang berpotensi mengalami intrusi air laut yang terjadi akibat pengaruh pasang surut di muara sungai. Intrusi air laut umumnya berdampak pada kebutuhan akan air bersih yang semakin sulit karena air tanah sudah terkontaminasi dengan air laut. Intrusi air laut yang terjadi semakin panjang dan berdampak pada lahan pertanian DAS Citanduy. Penelitian ini bertujuan untuk memprediksi panjang intrusi air laut akibat backwater dengan menggunakan software HEC-RAS 4.0, serta untuk melakukan analisis profil muka air dan arus balik yang terjadi di Sungai Citanduy. Berdasarkan analisis yang telah dilakukan, prediksi panjang intrusi air laut pada kondisi normal di tahun 2017 dan 2050 berturut-turut adalah sebesar 2,57 km dan 3,50 km, prediksi panjang intrusi air laut pada kondisi minimum di tahun 2017 dan 2050 berturut-turut adalah sebesar 2,03 km dan 2,57 km, dan prediksi panjang intrusi air laut pada kondisi maksimum di tahun 2017 dan 2050 berturut-turut adalah sebesar 2,57 km dan 3,50 km.Kata Kunci: Intrusi Air Laut, Backwater, HEC-RAS 4.0
Analisis Stabilitas Dan Biaya Perencanaan Dinding Penahan Tanah Tipe Bronjong di Sungai Ciliwung (Studi Kasus: Ruas Legok Nyenang Rt.01/03, Desa Leuwimalang, Kecamatan Cisarua, Kabupaten Bogor) Afryansyah, Afryansyah; Hariati, Feril; Taqwa, Fadhila Muhammad Libasut; Alimuddin, Alimuddin
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 1 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i1.7369

Abstract

Abstrak: Dinding penahan tanah adalah suatu struktur yang dibangun untuk menahan tanah lateral ketika tanah mengalami perubahan dalam elevasi dan melampaui sudut geser dalam tanah. Kondisi akses utama jalan Leuwimalang di Kampung Legok Nyenang RT 01/03, mengalami kerusakan. Sementara itu setengah jalan yang mengalami penurunan tanah tidak bisa berfungsi secara maksimal, hal ini diakibatkan terjadinya longsor sepanjang 27 meter di sekitar bantaran Sungai Ciliwung. Maka dari itu dilakukan analisa perbandingan dinding penahan tanah tipe gravitasi dan tipe kantilever bertujuan untuk merencanakan bentuk dan dimensi dinding penahan tanah tipe gravitasi, menganalisis stabilitas dinding penahan tanah terhadap guling, dan geser, menganalisis biaya konstruksi serta membandingkan nilai keamanan dan biaya konstruksi dinding penahan tanah tipe bronjong dengan tipe kantilever. Perhitungan tanah aktif menggunakan Metode Rankine. Pada struktur konstruksi dinding penahan tanah kantilever didapatkan stabilitas terhadap penggeseran (Fgs) = 0,39< SF = 1,5 dan untuk stabilitas terhadap guling (Fgl) = 0,78< SF = 1,5. Biaya konstruksi total yang diperlukan untuk membuat dinding penahan tanah tipe bronjong sebesar Rp. 2.680.000.000, sedangkan biaya konstruksi total yang diperlukan untuk membuat dinding penahan tanah tipe kantilever sebesar Rp. 1.460.000.000. Jadi dinding penahan tanah yang ekonomis dari segi biaya adalah dinding penahan tanah tipe kantilever.Kata Kunci: Stabilitas, Dinding penahan tanah, Biaya konstruksiAbstract: Retaining wall is a structure built to withstand lateral soil when land changes in elevation and exceed the friction angle in the soil. The main access condition of Leuwimalang road in Kampung Legok Nyenang RT 01/03, was damaged. Meanwhile, half of the road that has subsided in the soil cannot function optimally, this is due to a 27 meters landslide around the banks of the Ciliwung River. Therefore, a comparative analysis of the gravity-type and cantilever-type retaining walls is carried out to plan the shape and dimensions of the gravity-type retaining wall, to analyze the stability of the retaining wall against rolling and shear, to analyze construction costs and to compare the value of safety and construction costs of retaining walls. gabion type with cantilever type. Active soil calculation using the Rankine Method. In the cantilevered retaining wall construction structure, the stability to displacement (Fgs) = 0.39 <SF = 1.5 and for stability to overturning (Fgl) = 0.78 <SF = 1.5. The total construction cost required to construct a gabion-type retaining wall is Rp. 2,680,000,000, while the total construction cost required to construct a cantilever type retaining wall is Rp. 1,460,000,000. So an economical retaining wall in terms of cost is a cantilever type retaining wall.Keywords: Stability, Retaining walls, Construction costs.
Perhitungan Kebutuhan Air Irigasi untuk Perluasan Daerah Irigasi (Studi Kasus: Daerah Irigasi Cisadeng II, Desa Leuwisadeng, Kecamatan Leuwisadeng, Kabupaten Bogor) Rahayu, Uga Sri; Hariati, Feril; Alimuddin, Alimuddin; Nandiasa, Jantiara Eka
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 1 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i1.8425

Abstract

The need for irrigation water as a whole need to be known in the planning and management of irrigation systems. Given that the Cisadeng II Irrigation Area (DI) located in Leuwisadeng District, Bogor Regency, experienced an expansion of the paddy field area from 32 ha to 42 ha, it is necessary to carry out an analysis of the demand for irrigation water discharge on various cropping patterns. This study used two methods, namely manual calculation (KP-01 concept) and calculation using the CROPWAT application version 8.0. This study aims to compare the results of the two calculations. From the results of the study, the amount of irrigation water needed for rice cropping pattern with the beginning of land preparation in November, with manual calculations (KP-01 concept) using the modified Penman method is 8.12 - 19.00 m3/sec. Meanwhile, according to CROPWAT Version 8.0 calculations, it is 8.03 - 18.39 m3/sec. Thus, it can be concluded that the calculations with the two methods do not give too different values. In addition, from the results of calculating the reliable debit, the use of the CROPWAT Version 8.0 method provides a more accurate value. Keywords: Irrigation, water demand, manual calculation (KP-01), CROPWAT Version 8.0
Studi Perbandingan Daya Dukung Aksial Tiang Pancang Tunggal Persegi Berdasarkan Hasil Uji Pembebanan Statik (SLT) dan Uji PDA pada Pembangunan Apartemen Loftville City Kota Tangerang Selatan Taqwa, Fadhila Muhammad Libasut; Muktadir, Redho; Hariati, Feril; Lutfi, Muhamad; Apriliyandi, Ande
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9176

Abstract

Abstract: The deep foundation is one of the most important elements in the construction of high-rise buildings because the weight of the building will be fully borne by the foundation. This study aims to provide an overview of the prediction of the axial bearing capacity of single piles through a mathematical approach based on the results of the tests performed. The design axial bearing capacity is estimated through analysis of soil investigation results (N-SPT test results, DCPT test results, and laboratory investigation results), while the actual axial bearing capacity is obtained through interpretation of the Static Loading Test (SLT) results using the Davisson, Chin, and Mazurkiewicz, and the results of the PDA (Pile Driving Analyzer) load test were analyzed using the CAP-WAP application. The analysis was carried out on single piles with dimensions of 40x40 cm2, located in the Loftville City Apartment development project, South Tangerang City. Based on the results of the analysis that has been carried out, the planned axial bearing capacity is 131.3 tons, while the average carrying capacity based on the results of SLT interpretation on three tested piles using the Davisson, Mazurkiewicz, and Chin methods are 161.7; 205.4; and 98.8 tonnes. The results of the analysis are compared to the results of the PDA test, which shows a bearing capacity value of 290.1 tons, so the BCR values are 65.70% and 45.26% respectively. The BCR value is based on the results of the interpretation of the SLT test successively -respectively by 55.73%, 70.78%, and 34.06%. The BCR value which is not close to 100% may occur due to an error in determining the planned carrying capacity of 131 tons which is far below the actual carrying capacity value based on the PDA test results. The design carrying capacity value is then corrected to 100 tonnes and used as the 100% design load in the static load test so that the interpretation results also show BCR results that are not very accurate.
Desain Alternatif Struktur Talang Air Beton pada Saluran Sugih, Desa Cibedug, Kecamatan Ciawi Nopiyansah, Muhammad Ilham; Hariati, Feril; Chayati, Nurul; Insan, Muhammad Khaerul
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 7 No. 2 (2023)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v7i2.9436

Abstract

ABSTRACT The provision of water in wet farming is very important to support optimal crop yields. The irrigation system on the Sugih Canal in Cibedug Village, Ciawi, Bogor Regency was affected by a landslide with a depth of 8 meters, which resulted in a 28 meter long canal being cut off. This study aims to plan the construction of reinforced concrete gutters with a size of 60 cm and a height of 80 cm to repair broken points. The design of reinforced concrete gutters refers to SNI 03-2847-2002. It is planned that the floor plate thickness is 20 cm and the channel wall thickness is 15 cm, using concrete with quality K-250 (fc' = 25 MPa). Based on the analysis that has been carried out, the live load is 250 kg/m, the dead load is 748 kg/m, and the factored load is 1297.6 kg/m. The maximum moment (Mmax) that occurs at the pin support is 38,281 kNm. Concrete reinforcement on the channel floor plate is in the form of main reinforcement D12-135, and reinforcement for D8-300. Reinforcement for wall plate is main reinforcement D12-115, reinforcement for D8-255.
Co-Authors Acep Hidayat Afryansyah, Afryansyah Alimuddin Alimuddin Alimuddin, Alimuddin Apriliyandi, Ande Chayati, Nurul Chika Restu Maulidina, Chika Dini Aryanti Dwi Astuti, Gita Yunianti Fachruddin Fachruddin Fadhila Muhammad Libasut Taqwa Fadhillah Sulaeman, Nur Handika Farodhiyah, Siti Nurfatimatul Ginanjar, Bagus Hasibuan, Agus Fahrudi Hayati, Noor Ida Herman Herman Insan Fadil Insan Fadil Insan, Muhammad Khaerul Jannah, Lifa Raudhatul Mardiaman, Mardiaman Maulana Malik Ibrahim Muhamad Fadli Muhamad Lutfi Muhamad Rizki Muhammad Ilham Muktadir, Redho Nahrudin, Ma'mun Nandiasa, Jantiara Eka Nopiyansah, Muhammad Ilham Nur Handika Fadhillah Sulaeman Nuryanto Nuryanto Priyadi, Wisia Joko Putri, Andini Rizkarti Qonita, Nadhira Shofa Rahayu, Uga Sri Rahman, Ari Awalul Rulhendri Rulhendri Sadewa, Galih Salman, Nurcholis Salman, Nurcholis Saputra, Lingga Suprapti Suprapti Syaja'ah, Siti Kholifah Syamsul Arifin Tamaulina Br Sembiring Yanuarsyah, Ihsal