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All Journal Jurnal Konstruksia Prosiding Semnastek Forum Mekanika TERANG : Jurnal Pengabdian Pada Masyarakat Menerangi Negeri Construction and Material Journal

Irma Sepriyanna

Institut Teknologi PLN

Author-ID : 4260186

Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Articles

PERUBAHAN ANGKA PORI TANAH LUNAK TERSTABILISASI DENGAN SERBUK KACA DAN SERAT KARUNG PLASTIK Dyah Pratiwi Kusumastuti; Irma Sepriyanna; Hastanto SM
Prosiding Semnastek PROSIDING SEMNASTEK 2018
Publisher : Universitas Muhammadiyah Jakarta

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

Tanah dasar berfungsi sebagai pondasi pada konstruksi jalan yang mampu memikul beban konstruksinya sendiri dan beban lalu lintas. Namun masalah yang seringkali dihadapi dalam merencanakan dan melaksanakan pekerjaan konstruksi jalan adalah karakteristik dan jenis tanah pada daerah setempat yang tidak memenuhi persyaratan kualitas dan mutu timbunan. Pada penelitian ini akan dibahas mengenai pengaruh stabilisasi tanah rawa yang merupakan tanah lunak (soft soil) dengan penambahan serbuk kaca dan serat karung plastik sebagai tanah timbunan. Metode yang digunakan dalam penelitian adalah melihat perubahan angka pori dengan melakukan pengujian konsolidasi pada tanah asli maupun tanah terstabilisasi. Berdasarkan hasil pengujian, berat jenis tanah lunak minimum sebesar 1,863 yang merupakan tanah asli + 10% serbuk kaca + 0,5% serat karung plastik atau mengalami penurunan sebesar 9,387 % dibandingkan berat jenis tanah asli. Penambahan serbuk kaca dan serat karung plastik optimum pada kombinasi tanah asli + 10% serbuk kaca + 0,25% serat karung plastik dengan angka pori sebesar 0,76 atau mengalami penurunan sebesar 2,56% dibandingkan angka pori tanah asli pada pembebanan 16 kg.

ANALISIS KEAMANAN STRUKTUR BENDUNGAN DAN UNDERGROUND POWER HOUSE PLTA CIRATA JAWA BARAT Indah Handayasari; Irma Sepriyanna; Nanda Yogi Setiyanto
FORUM MEKANIKA Vol 6 No 1 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

PT PJB BPWC as the manager of important buildings in the Cirata hydro power plant such as dams, dam control centers, spillway buildings, power houses, hillbones and others, in its operation requires monitoring to know the changes and behavior of the monitored buildings. Monitoring is done by observing certain locations regularly and continuously through the aid of tools / instruments or visually. PLTA Cirata installed about 20 types of instrumentation in the dam and underground power house which is used to monitor the security level of Cirata hydropower building structure. Monitoring and maintenance activities are intended to identify early symptoms of movement and changes that could endanger dam structures, other major structures, as well as to things that could threaten the safety of the human psyche so that preventive action can be taken to avoid further damage or loss big. Based on the fifth measurement of seepage instrumentation, inclinometer, piezometer, jointmeter, and crackmeter showed results that are in the range of values below the design boundary so it can be concluded that the safety conditions of the dam structure and underground power house PLTA Cirata are still safe.

PENGGUNAAN LIMBAH KERAMIK DAN SERBUK KACA SEBAGAI BAHAN STABILISASI TANAH RAWA Irma Sepriyanna; Fitri Khairani
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Marshland is soft soils containing clay, silt and peat. Clay / silt are cohesive plastic which has the properties coherency between the grains and capable of continuously formed permanently with a relatively moderate pressure without rupturing. However, clay or silt becomes inconsistent / unstable to loading, resulting in a high settlement when loaded (instability). Marshland has unstable behavior which is necessary to improve. One of chemically improvement can be done by recovering waste glass bottles and ceramic shards waste as a stabilizing agent. Waste glass bottles and ceramic shards of waste recycled in a crushed glass powder and ceramic powder which serves as a filler and a binder. Based on test results obtained optimum value percentage value addition of powdered glass and ceramic powder is on the ground with a mixture of 10% and 10% glass powder with a ceramic powder curing 7 days . The soil with a mixture of 10% and 10% glass powder with a ceramic powder curing 7 days has a value of water content of 44.81%, 1.40 specific gravity, liquid limit of 56.92%, 30.36% plastic limit, shrinkage limit 26 , 49%, 26.56% plasticity index, CBR 36.33%. This shows that the soil with the CBR value (CBR 3% - 7%) can be used as a subgrade layer for local residential streets or roads with low traffic

ANALISIS PERBAIKAN PERGESERAN DINDING CONTIGUOUS BORED PILE DENGAN PERMODELAN PLAXIS V 8.2 STUDI KASUS : PROYEK PEMBANGUNAN BASEMENT CIPUTRA INTERNATIONAL PHASE 1 Irma Sepriyanna; Wendy Frayoga Damanik
FORUM MEKANIKA Vol 5 No 1 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Fewer land available, making the switch to vertical development with lots of built high-rise building toreplace the buildings that wide. One of the facilities must be put in a tall building is the parking of vehicles.Park is prepared to meet the demands of a large parking area and safely placed in the basement or abasement parking. Based on analysis of the shift, strain, stress, axial force, shear force, force moment and thesafety factor (safety factor) wall contiguous bored pile, which then calculate the design strength of anchorand length of anchor needed to repair the shift to development projects basement Ciputra International Phase1 improvements obtained shift condition 2 (excavation 1) a maximum of 1.65 m, the voltage -480.56 kN / m,strain 261.16% -147.04 wall axial force kN / m, -80.304 shear force kN / m, the moment of the KNM -180.01 /m and a safety factor 4.7650.

Pengaruh Penambahan Serbuk Kaca Dan Abu Sekam Pada Tanah Lunak Berdasarkan Uji Konsolidasi Dyah Pratiwi Kusumastuti; Irma Sepriyanna Sepriyanna
FORUM MEKANIKA Vol 8 No 2 (2019): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

It can not be avoided when the construction must stand on soft soil, then the construction will suffer damage due to subsidence or congestion from soft soil. To improve soft soils as one part of the construction of them is the method of chemical stabilization of the soil. The stabilizer material mixed was 10% glass powder and the percentage of husk ash was 0%, 2.5%, 5%, 7.5% and 10% of the dry weight of the original soil sample. Changes in the characteristics of soft soil and stabilized soils are reviewed based on the consolidation test. Based on the results of the study, the value of the void ratio decreases with increasing glass dust and husk ash, where the lowest void ratio is 0.5328 obtained in the addition of 10% glass powder and 7.5% husk ash. A decrease in the void ratio indicates a decrease in the compression index (Cc) and the swelling index (Cs). The lowering of the compression index and the swelling index indicate that the addition of glass powder and husk ash causes the soft soil sample to become denser. The lowest compressive index and swelling index values were obtained in soil sample specimens with the addition of 10% glass powder and 10% husk ash, which respectively decreased by 35.165% and 75.757% when compared to the condition of the original soil sample.

Penjadwalan Proyek Pembangkit Listrik Tenaga Surya (PLTS) Dengan Critical Path Method Irma Sepriyanna; Arif Suardi; Utami Wahyuningsih
FORUM MEKANIKA Vol 10 No 1 (2021): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/forummekanika.v10i1.1318

Untuk memenuhi kebutuhan pasokan energi, tidak cukup hanya mengandalkan energi fosil sebagai sumber utama. Salah satu sumber energi terbarukan yang memiliki potensi besar di Indonesia adalah tenaga surya, yang dapat dimanfaatkan sebagai sumber utama pembangkit listrik tenaga surya (PLTS). Pelaksanaan pembangunan proyek PLTS dapat menjadi tugas yang rumit karena membutuhkan investasi waktu, biaya, dan tenaga kerja yang tidak sedikit. Masalah penjadwalan aktivitas adalah salah satu tugas penting yang harus dilakukan untuk pengendalian proses konstruksi dan perencanaan yang cermat sebelum dimulainya suatu proyek. Berkaitan dengan hal tersebut, penelitian ini mencoba menerapkan metode penjadwalan proyek pembangunan pembangkit tenaga surya terpusat off-grid, dengan metode jalur kritis (Critical Path Method). Hasil studi menunjukkan bahwa total waktu yang dibutuhkan untuk menyelesaikan proyek, berdasarkan penghitungan, menjadi 37 minggu jika tidak ada penundaan. Penerapan metode jalur kritis dapat memperbaiki jadwal yang digunakan sebelumnya dan hal ini akan membantu manajer proyek dalam menangani masalah agar penyelesaian proyek dapat dikerjakan tepat waktu

Revitalisasi Tempat Pembuangan Sampah Sementara Di Perumahan Buana Gardenia Untuk Peningkatan Kesehatan Lingkungan Dyah Pratiwi Kusumastuti; Indah Handayasari; Irma Sepriyanna; Hastanto Sm
Terang Vol 2 No 2 (2020): TERANG : Jurnal Pengabdian Pada Masyarakat Menerangi Negeri
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/terang.v2i2.987

A comfortable and healthy residential area must be supported by the availability of adequate facilities and infrastructure such as the availability of clean water networks, road networks, drainage systems, worship facilities, green open spaces and temporary garbage storage facilities. The available temporary garbage collection sites must be able to accommodate the volume of waste up to the relevant transportation service schedule. However, sometimes transportation delays can occur, so that it can cause problems in residential areas, especially in Buana Gardenia housing such as unpleasant odors and the flow of water that is blocked due to rubbish that falls into the waterways. Waste that falls into the water channel over time can clog the flow of water in it, other than that due to organic rotting in the water channel can cause sedimentation in the bottom of the channel so that the channel becomes shallow. To anticipate the fall of rubbish into the waterways due to the full volume of waste and delays in transportation from related agencies. In the community service activities at the Buana Gardenia housing complex, a temporary garbage shelter will be revitalized. The revitalization results can reduce the waste that falls into the water channel so that the flow of water in the channel flows smoothly, reducing the number of mosquito larvae and puddle when it rains.

PENGARUH PENAMBAHAN SERBUK ARANG CANGKANG SAWIT TERHADAP KUAT GESER LANGSUNG PADA TANAH LEMPUNG Dyah Pratiwi Kusumastuti; Irma Sepriyanna; Arief Suardi Nur Chairat
Konstruksia Vol 14, No 1 (2022): Jurnal Konstruksia Vol 14 No. 1 Tahun 2022
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jk.14.1.33-39

Salah satu jenis tanah berbutir halus adalah tanah lempung yang memiliki sifat kohesi dengan tingkat plastisitas yang rendah sampai dengan tinggi dan daya dukung yang rendah. Tingginya tingkat plastisitas dapat menyebabkan tingginya potensi mengembang tanah lempung. Untuk mengurangi plastisitas dan meningkatkan daya dukung pada tanah lempung sehingga perlu adanya perbaikan parameternya. Metode perbaikan yang sederhana adalah stabilisasi kimia. Pada penelitian ini digunakan serbuk arang cangkang sawit sebagai bahan stabilisasi tanah lempung. Serbuk arang cangkang sawit yang ditambahkan berdasarkan berat kering tanah bervariasi mulai 5%, 10% dan 15%. Penambahan serbuk arang cangkang sawit tersebut bertujuan untuk mengetahui pengaruhnya terhadap plastisitas dan parameter kuat geser tanah lempung. Hasil pengujian di laboratorium didapatkan tingkat plastisitas tanah lempung menurun seiring dengan penambahan serbuk arang cangkang sawit. Sedangkan untuk parameter kuat geser diketahui bahwa nilai kohesi mencapai nilai optimum dengan variasi penambahan serbuk arang cangkang sawit 10% dengan nilai sebesar 44,04 kPa. Namun hal tersebut tidak berlaku dengan nilai sudut geser dalam yang semakin lama semakin meningkat seiring dengan bertambahnya serbuk arang cangkang sawit. Penambahan serbuk arang cangkang sawit pada tanah lempung dapat menyebabkan hilangnya sifat kohesif dan tanah lempung menjadi lebih berbutir.

PENGARUH SERBUK BAN BEKAS SEBAGAI BAHAN TAMBAH PADA CPHMA DENGAN VARIASI SUHU PEMADATAN TERHADAP KARATERISTIK MARSHALL Indah Handayasari Halim; Irma Sepriyanna
Construction and Material Journal Vol. 4 No. 2 (2022): Construction and Material Journal Vol. 4 No. 2 Juli 2022
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v4i2.4593

Buton asphalt is a kind of natural asphalt found in Indonesia. The government is recently trying to develop various ways so that the use of Buton asphalt can be optimized to meet the demand for quality asphalt supplies for road pavements. CPHMA is a product from the development of Buton asphalt which has the advantage that it can be spread in conditions of air temperature (known as Cold mix) and elevated temperature (known as Hot mix). In this study, tire powder was used in addition to variations of 0%, 2.5%, 7.5% and 12.5% on CPHMA asphalt with variations in compaction temperature of 30oC, 60oC, 90oC, 120oC, and 150oC. Based on the results of tests carried out, the use of used tire powder from motor vehicle waste can improve the performance of CPHMA with an additional percentage of 2.5% at a compaction temperature of 150oC to meet the specified specifications. Keywords: CPHMA, Tire Powder, Marshall.

Co-Authors Arief Suardi Nur Chairat Arif Suardi Dyah Pratiwi Kusumastuti Dyah Pratiwi Kusumastuti Dyah Pratiwi Kusumastuti Fitri Khairani Hastanto Sm Hastanto SM Indah Handayasari Indah Handayasari Indah Handayasari Halim Nanda Yogi Setiyanto Utami Wahyuningsih Wendy Frayoga Damanik

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