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All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Makara Journal of Technology Journal of Infrastructure and Construction Technology Nemui Nyimah
Andius Dasa Putra
Universitas Lampung
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Other

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Studi Daya Dukung Tanah Lempung Lunak menggunakan Ecomix. Setyanto, .; Putra, Andius Dasa; Permana, Erik
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 3 (2013): Edisi Desember 2013
Publisher : UNIVERSITAS LAMPUNG

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Abstract

In this research, the soil to test is soft clay soil from Rawa Sragi area of Belimbing Sari village, inJabung sub district of East Lampung regency, Lampung province. The soil properties were as thefollowing: specific gravity 2.546; water content 50.64%, liquid limit 61.26%, plasticity limit30.77%, plasticity index 30.49%, and material sieve passing no. 200 was 90.42%. Additive mate-rial to use was Ecomix. There were three treatments of ecomix mixtures of 3 gr, 4 gr, and 5gr with0.4 kg cement and 6 kg soft clay soil samples. The mixture samples were letting aside for 7 daysand soaked for 4 days.The results showed that the ecomix addition to mixture or cement and soft clay soil was able toimprove the soil mechanical and physical properties. The physical test results such as specificgravity, optimal water content, and plasticity index tests showed decreasing results after soil sta -bilization. The maximum CBR value was obtained in mixture of 34.49% in non-soaked condition,while the lowest CBR value was 8.2% soaked condition. The CBR test results showed that the soilmixture of ecomix additive material and cement can be used for road construction subgrade be-cause the CBR value was ≥ 6%
ANALISIS KAWASAN KESELAMATAN OPERASI PENERBANGAN (KKOP) BANDAR UDARA PEKON SERAI DI KABUPATEN LAMPUNG BARAT Putra, Andius Dasa; Purba, Alexander
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 13, No 2 (2009): Edisi Agustus Tahun 2009
Publisher : UNIVERSITAS LAMPUNG

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Abstract

As the one requirement for air transport safety and airport operating is Obstacle LimitaionSurface (OLS) area. The aimed of this research is to determining the major obstacle limitationsurface, consist of take-off and landing surface, possibility accident area, conical area, innerhorizontal, outer horizontal, transition area, and instrument of navigation posistion. This researchas inputing program to Pemerintah Daerah Kabupaten Lampung Barat to prevent of high buildingand tower BTS who would be disturb or give the risk for air transport operation at the SeraiAirport. Based on the observation and geodetic calculation we can determining of ObstacelLimitaion Surface (OLS) area at Serai Airport. Thsi research shown that high building and towerBTS by height about 70 – 120 m, not enter in this area of obstacle limitation surface.Furthermore, Pemerintah Kabupaten Lampung Barat will prepare and make a regulation abouthow many height of building who considered will be allowed in the Obstacel Limitation Surface(OLS) area.
Mechanical Behavior of Clay Soil Stabilized with Fly Ash and Bottom Ash Nugroho, Soewignjo Agus; Zulnasari, Azra; Fatnanta, Ferry; Putra, Andius Dasa
Makara Journal of Technology Vol. 26, No. 1
Publisher : UI Scholars Hub

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Abstract

Soil is one of the most important aspects of an infrastructure given its functions of receiving and holding structural loads. However, not all soils have good physical and mechanical properties. To overcome those conditions, stabilization of the soil is practiced to meet the technical requirements. This study aims to determine the behavior of high plasticity clay stabilized with lime, fly ash, and bottom ash. These additives can be used as a stabilizing agent to increase soil strength. The percentage of additives varied from 5%–25% then mixed with clay and were tested through the (Unconfined Compression Strength (UCS) test. The UCS test was carried out with 6 treatments, including consecutively non-curing and unsoaked, non-curing and soaked, curing for 7 days and unsoaked, cured for 7 days and soaked, cured for 28 days and unsoaked, and cured for 28 days and soaked. Results show that the UCS value increased along with the span of curing time. Meanwhile, the soaking treatment of the sample decreased the UCS value.
Pengaruh Spasi dan Panjang pada Kelompok Tiang Terbuka di Pasir: Studi Model Kelompok Tiang dan Fondasi Blok Agus Nugroho, Soewignjo; Satibi, Syawal; Putra, Andius Dasa; Andriani, Andriani
Journal of Infrastructure and Construction Technology Vol. 1 No. 2 (2023): July 2023
Publisher : Dept. of Civil Engineering Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56208/jictech.1.2.45-51

Abstract

Planning for existing construction requires taking into consideration the exact location of the structure; sandy soil is typically found in Indonesia, and pile foundations are a very frequently used type of support. Whenever the stable soil is located at a quite deep depth or when the building's foundation is situated on a relatively high embankment, the pile foundation is utilized to support the structure. Given the quantity of pile foundations utilized in Riau, where soft soil makes up the majority of the soil type, a study on pile foundations is necessary. A possible research approach involves conducting a small-scale pile foundation modeling experiment to determine the group pile's bearing capacity on sand soil, taking into account variations in the pile's length and space. Direct testing on a pile foundation model with length, spacing, and length variations of 20, 30, and 40 cm as well as spacing variations of 2.5D, D, and 5D was used for the research. Pile group length 40 cm has the highest capacity, according to the results of a direct loading test conducted with a spacing of 2.5D. According to the findings of the Terzaghi and Peck method interpretation, the pile with a length of 40cm and 2.5D spaces has the largest qult of 1.665 kN. A pile with a length of 40cm and 2.5D pile spacing is the pile with the largest qult of 2.232 kN, followed by a pile with a length of 30cm and a space of 2.5D. Based on the results of the investigation, it can be stated that Qult will get higher the more closely spaced the pile exists and that Qult will become higher the longer the pile is on the foundation model.
Perilaku deformasi batuan lapuk ditinjau dari uji 1-D compression slaking test Laila, Ibnu Abi; Putra, Andius Dasa; Syah, Aminudin
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 8 No. 3 (2020): Edisi September 2020
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v8i3.1463

Abstract

Tujuan penelitian ini adalah mengetahui perilaku deformasi akibat crushing dan slaking melalui uji 1-D Compression Slaking Test terhadap batuan lapuk. Slaking merupakan keadaan tanah atau batuan yang tidak dapat mempertahankan konsistensinya akibat adanya gangguan air.  Penelitian ini dilakukan pada sampel batuan lapuk melalui pengujian 1-D Compression Slaking Test dan pengujian X-Ray Diffraction (XRD) untuk mengetahui mineral yang terkandung pada setiap batuan. Uji 1-D Compression Slaking Test dilakukan pada tekanan sebesar 9,8; 19,6; 39,2; 78,5; 157; 314 kPa. Hasil pengujian 1-D Compression Slaking Test didapatkan perilaku deformasi yang diakibatkan crushing(∆e1) optimum terjadi pada batuan Bukit Kemuning sebesar 0,510 dan perilaku deformasi yang diakibatkan slaking(∆e2) optimum terjadi pada batuan Pemancar sebesar 0,483.
Pengaruh perubahan ukuran partikel pada batuan lapuk akibat fenomena slaking Azis, M Irvani; Putra, Andius Dasa; Syah, Aminudin
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 8 No. 3 (2020): Edisi September 2020
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v8i3.1485

Abstract

Salah satu penyebab batuan mengalami perubahan bentuk yaitu adanya Slaking. Slaking merupakan keadaan tanah atau batuan yang tidak dapat mempertahankan konsistensinya akibat adanya gangguan air. Tujuan penelitian ini yaitu mengetahui mineral penyusun batuan lapuk, dan mengetahui perubahan ukuran partikel batuan lapuk melalui uji Accelerated Slaking Test. Penelitian ini dilakukan dengan pengujian Accelerated Slaking Test melalui 5 siklus basah-kering (Wetting and Drying), dan pengujian X-Ray Diffraction (XRD). Sampel yang digunakan yaitu batuan lapuk di Kecamatan Lemong dan Kecamatan Pemancar (Kabupaten Pesisir Barat), Kecamatan Semaka (Kabupaten Tanggamus), Kecamatan Padang Cermin (Kabupaten Pesawaran), Kecamatan Teluk Betung (Kota Bandar Lampung), Kecamatan Bukit Kemuning (Kabupaten Lampung Utara), dan Kecamatan Poncowarno (Kabupaten Lampung Tengah). Berdasarkan pengujian Accelerated Slaking Test didapatkan batuan yang tahan terhadap Slaking secara berurutan yaitu batuan Lemong, Poncowarno (1), Teluk Betung Padang Cermin, Bukit Kemuning, Semaka (1), Pemancar, Poncowarno (2), dan Semaka (1). Ketahanan batuan terhadap Slaking dipengaruhi oleh jenis dan mineral penyusun batuan. Kata Kunci: Slaking, XRD, Accelerated Slaking Test, Wetting and Drying, Batuan Lapuk.
Pengaruh Penambahan Semen pada Tanah Lempung terhadap Parameter Konsolidasi dan Kecepatan Penurunan Dwitya, Fara; Putra, Andius Dasa; Iswan, I
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1789

Abstract

Soil is a subgrade for basic building construction. While receiving the load, soil will settle, which take long time to complete for soft clays because of its low permeability. The problem that is caused by settlement as seen in Palembapang, Umbul Ligoh, South Lampung has low bearing capacity, this leads to cracks in the house walls, bumpy roads, and the settlement of the road constructions. One of the soil stabilization effort is addingcement as an additive material because it has very fine particles so that it can fill the soil pores and bond to the contact area between the soil grains and has a function as a strong binder. This work aimed to study the parameters of the compression index (Cc), coefficient of consolidation (Cv), consolidation settlement (Sc) and time of consolidation (t) due to soft clay mixing with cement as a soil stabilization material with percentage of 4%, 8% and 12%. Due to cement addition into soft clay, compaction with the standard proctor experienced a decrease the optimum moisture content (OMC) and an increase in the weight of maximum dry volume. In addition, in the consolidation test, the compression index (Cc) and consolidation settlement (Sc) decreased 7,95% and 5,44%, moreover the coefficient consolidation (Cv) increase 2,74% and the time of consolidation (t) were faster. The most change on consolidation parameter was recorded by the sample mixed with 12% of cement.
Perubahan Perilaku Tanah Lempung Lunak Akibat Stabilisasi dengan Bahan Aditif Kapur menggunkaan Metode Deep Soil Mixing Pola Triangular Pangestu, Beno Balakosa; Iswan, Iswan; Putra, Andius Dasa
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1797

Abstract

Pelembapang, South Lampung has a soft clay soil structure. Soft clay soil has a low bearing capacity value This has an effect on the building to be built on it. Therefore, soil stabilization must be carried out. The method used in this study is the deep soil mixing (DSM) method, which is one of the soil improvement method by mixing additional materials in the field (in-site). This method is more affordable because they use their soil as theiraggregate and reduce the transportation budget because of stuff supply.The purpose of this study is to determine the change of soil load-bearing capacity due to the variation of distance and the diameter of the DSM stabilization column on soft clay soil and soft clay soil with 8% lime. This study shows that the stabilization of soft clay soil using DSM of 8% lime with triangular configuration has increased its load-bearing capacity (qu) from10.368 kg/cm2 to 12.96 kg/cm2. The increase of soil load-bearing capacity with the stabilization of the DSM column is proportional to the volume of soil improvement. The largest increase of the soil load-bearing capacity occurred in 1D columns range and 3.75 cm diameter. The distance variation also gives a more significant change compared to the variation of diameter. The most efficient distance and diameter are at the variation of the distance of 1.25D columns range and 2.5 cm diameter.
Analisis Potensi Kerentanan dan Risiko Bencana di Wilayah Kabupaten Tanggamus Melianita, Revi; Putra, Andius Dasa; Syah, Aminudin
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 3 (2021): Edisi September 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i3.1896

Abstract

Tanggamus merupakan salah satu Kabupaten di Provinsi Lampung yang memiliki banyak wilayah berpotensi tinggi terhadap terjadinya bencana alam seperti gempa bumi, tsunami, tanah longsor, banjir dan bahaya gunung api, baik yang disebabkan oleh fenomena geologi maupun oleh iklim. Kejadian bencana alam seringkali menimbulkan korban jiwa dan kerugian material yang besar sehingga perlu dilakukan kajian pengurangan risiko terhadap bencana. Dalam penelitian ini dilakukan delineasi wilayah-wilayah yang memiliki tingkat ancaman, kerentanan, kapasitas dan resiko bencana alam seperti tanah longsor, banjir dan gempa bumi yang dibagi menjadi 3 klasifikasi kelas yaitu rendah, sedang dan tinggi. Hasil analisis yang diperoleh dari delineasi pembuatan peta risiko bencana tanah longsor menunjukkan bahwa wilayah yang termasuk dalam klasifikasi kelas rendah seluas 187.364,82 ha, kelas sedang 71.454,95 ha dan kelas tinggi 26.726,24 ha, untuk bencana banjir kelas rendah 220.592,08 ha, kelas sedang 34.404,94 ha dan kelas tinggi 30.548,99 ha serta gempa bumi kelas rendah 92.341,21 ha, kelas sedang 112.376,12 ha dan kelas tinggi 80.828,67 ha. Wilayah yang memiliki tingkat ancaman bencana tinggi, perlu diantisipasi dan diminimalkan risiko akibat bencana, sehingga perencanaan dan penyusunan pembangunan tata ruang serta wilayah sangat diperhitungkan terutama daerah dengan tingkat kerentanan yang tinggi terhadap bencana. Kata kunci : Ancaman, Kerentanan, Kapasitas dan Risiko Bencana.
Analisis Indeks Risiko dan Potensi Kebencanaan (Studi untuk Wilayah Kabupaten Lampung Tengah) Pangestu, Halsa Dinar; Putra, Andius Dasa; Syah, Aminudin
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 3 (2021): Edisi September 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i3.1906

Abstract

AbstrakKabupaten Lampung tengah merupakan salah satu daerah yang rawan terhadap bencana alam. Hal ini sesuai pada data Indeks Rawan Bencana Indonesia (IRBI) yang dikeluarkan BNPB tahun 2018 sebesar 131,20. Sehingga menuntut suatu alternatif penanganan yang dapat mengurangi kerugian di masa yang akan datang, maka dilakukan pemetaan daerah risiko bencana untuk memberikan informasi lokasi-lokasi yang memiliki risiko terjadi bencana.Penentuan parameter, klasifikasi dan pembobotan indeks ancaman, kerentanan dan kapasitas mengacu pada Peraturan Kepala BNPB No. 2 Tahun 2012 tentang pedoman umum pengkajian risiko bencana yang dimodifikasi sesuai situasi dan kondisi wilayah penelitian.Berdasarkan hasil pemetaan risiko bencana diklasifikasikan menjadi 3 (tiga) kelas, yaitu: tinggi, sedang dan rendah. Kecamatan yang memiliki tingkat risiko tinggi terhadap bencana gempa bumi, kekeringan dan banjir yaitu kecamatan Terbanggi Besar, Gunung Sugih, Bandar Mataram, Kota Gajah, Trimurjo, Selagai Lingga, Kalirejo, Seputih Mataram, Bumi Nabung, dan Seputih Surabaya. Berdasarkan hasil kajian tersebut diketahui bahwa daerah dengan tingkat risiko tinggi terhadap bencana gempa bumi, kekeringan, dan banjir perlu diatur di dalam rencana pola tata ruang Kabupaten Lampung Tengah untuk menghasilkan penggunaan ruang yang efisien dan meminimalkan risiko bencana.Ini adalah bagian Kata kunci : Ancaman, Kerentanan, Kapasitas, Risiko.
Co-Authors . Setyanto Adenora, Novan Agus Nugroho, Soewignjo Alexander Purba Alviani, Enggar Andriani Andriani Auli, Septriza Auliyak, Alma Sulton Azis, M Irvani Dwitya, Fara Erik Permana Ferry Fatnanta Irwan, Devrisvansyah Iswan . Iswan Iswan Iswan, I Julianto, Agil Kafi, Muhammad Kristianto Usman Laila, Ibnu Abi Laksmi Irianti Lusmeilia Afriani Melianita, Revi Ofik Taufik Purwadi, Ofik Taufik Ofrial, Siti Anugrah Mulya Putri Pangestu, Beno Balakosa Pangestu, Halsa Dinar Prangesty, Agnes Regina Pratomo, Riant Pandu Putri, Silfa Nayyira Rahayu Sulistyorini Satibi, Syawal siregar, amril maruf Soewignjo Agus Nugroho Syah, Aminudin Tiara, Tiara Wahyuni, Nanda Dwi Werena, Rosalia Dwi Zulnasari, Azra