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All Journal Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan Jurnal Teknik Sipil Jurnal Rekayasa Sipil Journal of Advanced Civil and Environmental Engineering Jurnal Pemberdayaan Masyarakat Madani (JPMM) JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION Jurnal Pengembangan Rekayasa dan Teknologi Astonjadro Jurnal Teknik Sipil Giratory Upgris Teknika Dulang: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Sipil Jurnal Pengabdian KOLABORATIF JMT (Jurnal Matematika dan Terapan) KOPEMAS
Masvika, Hendra
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Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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KLASIFIKASI MASSA BATUAN PADA TEROWONGAN PENGELAK BENDUNGAN JRAGUNG DENGAN METODE RMR DAN Q-SYSTEM Angga Setiawan Pamungkas; Eka Bogi Anisa; Kusrin; Hendra Masvika; Andie Julian Arfa
Jurnal Teknik Sipil Vol 7 No 2 (2023): Jurnal Gradasi Teknik Sipil - Desember 2023
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/gradasi.v7i2.1454

Abstract

Bendungan adalah bangunan yang terdiri dari urugan tanah atau batuan. Bangunan ini berfungsi untuk menahan laju air dari waduk atau danau, sebagai pembangkit listrik serta tempat rekreasi masyarakat. Bendungan Jragung terletak di desa Candirejo, Kecamatan Pringapus, Kabupaten Semarang. Dalam pembangunan bendungan ini diperlukan suatu bangunan pengelak yang berfungsi untuk mengelakan air sungai pada saat mengerjakan konstruksi bendungan utama. Pada pelaksanaan terowongan pengelak membutuhkan analisis klasifikasi batuan serta litologi batuan di lapangan dengan menggunakan metode Rock Mass Rating (RMR) dari Bieniawski 1989 untuk mengetahui kondisi litologi batuan beserta klasifikasinya. Selain itu digunakan metode Rock Mass Quality (Q)-System sebagai pembanding. Berdasarkan hasil analisis yang membandingkan dua metode menghasilkan batuan yang memiliki klasifikasi massa batuan fair rock yang termasuk dalam kategori III dengan nilai RMR antara 41- 60 dengan stand up time ± 24 jam sampai dengan ± 28 jam dan good rock yang termasuk dalam kategori II dengan nilai RMR 60-80 dengan rekomendasi pemasangan steel ribs dengan jarak 1,5 m pada metode RMR. Sedangkan pada metode Q-System menghasilkan klasifikasi massa batuan fair rock dengan panjang rockbolt pada penyangga terowongan 3 m serta ketebalan shotcrete 40-100 m tanpa tulangan dengan jarak rockbolt yaitu 2 m-2,3 m
Perbaikan Tanah Ekspansif Dengan Penambahan Pasir Kasar Sebagai Stabilisator Faizal Mahmud; Hendra Masvika; Kukuh Wisnuaji Widiatmoko; Fahrudin Ahmad
Jurnal Teknik Sipil Vol. 17 No. 1 (2024): Juni 2024
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/jts.v17i1.1394

Abstract

Stabilisasi tanah merupakan suatu langkah untuk meningkatkan sifat-sifat dan kekuatan pada tanah. Salah satu metode untuk meningkatkan daya dukung tanah adalah dengan menambah atau mencampur dengan material yang memiliki nilai daya dukung yang tinggi. Penelitian akan difokuskan pada daya dukung tanah dengan menambah atau mencampur pasir kasar menggunakan pengujian Atterberg Limits dan Proctor yang diharapkan dapat meningkatkan daya dukung tanah terhadap kepadatannya. Penelitian dilakukan di Laboratorium Mekanika Tanah Fakultas Teknik Univesitas Semarang dengan cara membuat sampel dari hasil pemadatan standar, kemudian sampel diberikan penambahan pasir kasar dengan persentase penambahan sebesar 0%, 10%, 30%, dan 50% untuk mendapatkan nilai Atterberg Limits dan Proctor maksimum setelah dilakukan penambahan pasir kasar. Pada masing-masing pengujian didapatkan hasil bahwa pada tanah tersebut mengalami peningkatan daya dukung setelah dilakukan stabilisasi, sehingga dapat disimpulkan bahwa pasir kasardapat digunakan untuk bahan stabilisasi. Pada masing-masing pengujian didapatkan hasil bahwa proses stabilisasi tanah optimum berada pada campuran 50%, hal ini terjadi karena sifat dari pasir kasar yang befungsi sebagai bahan pengisi tetapi tidak memiliki sifat mengikat, sehingga ketika volume pasir kasar telah memenuhi rongga-rongga tanah dan memiliki sisa, maka sisa pasir kasar tersebut akan menumpuk dan memadat bersama tanah sehingga lebih menstabilkan ikatan tanah yang telah terbentuk.
MENCIPTAKAN LAPANGAN KERJA DENGAN BERWIRAUSAHA IKAN LELE DALAM EMBER DI KELURAHAN JABUNGAN KOTA SEMARANG Nurhidayati Nurhidayati; Edy Susilo; Hendra Masvika
Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024 Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5
Publisher : Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024

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Abstract

Kelurahan Jabungan sebesar 2.265 Ha yang terletak di pinggir wilayah Kecamatan Banyumanik. Kelurahan Jabungan terdiri atas 6 RW (Rukun Warga) dan 29 RT (Rukun Tetangga). dimana masyarakat Jabungan sebagian besar belum/tidak bekerja dan mengurus rumah tangga sebanyak 1.793 orang.  Kewirausahaan memiliki peranan untuk menanggulangi pengangguran dengan membuka lapangan kerja, mendukung inovasi, dan membangun hubungan bisnis yang kuat. Tujuan dilaksanakannya PKM ini karena banyaknya penduduk di kelurahan Jabungan yang belum/ tidak bekerja serta ibu rumah tangga.  Pengabdian ini merupakan solusi yang diberikan kepada masyarakat untuk memanfaatkan melakukan budidaya lele dalam ember (budikdamber). Selain membudidayakan lele dalam ember dengan tanaman kangkung peserta diberi penyuluhan dan pelatihan menghitung penerimaan, biaya dan keuntungan yang diperoleh.  Metode yang digunakan adalah dengan menggunakan metode penyuluhan, pelatihan, dan pendampingan budidaya lele dalam ember. Ahli/pakar budidaya didatangkan untuk memberi penyuluhan pemeliharaan lele sampai panen. Pakar juga didatangkan untuk memberi pelatihan keuangan diantaranya menentukan HPP dan menghitung keuntungan yang diperoleh. Hasil dari PKM ini adalah masyarakat bisa memanfaatkan lahan yang terbatas dengan melakukan budikdamber. Masyarakt juga bisa menghitung penerimaan, penegeluaran dan keuntungan.
UPAYA MENGATASI PERMASALAHAN KEKURANGAN AIR DENGAN PIPA RESAPAN HORISONTAL DI KELURAHAN JABUNGAN KOTA SEMARANG Hendra Masvika; Edy Susilo; Nurhidayati Nurhidayati
Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024 Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5
Publisher : Konferensi Nasional Pengabdian Masyarakat (KOPEMAS) #5 2024

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Abstract

Permasalahan kekurangan air dirasakan di beberapa daerah di Provinsi Jawa Tengah, salah satunya di Kelurahan Jabungan Kecamatan Banyumanik Kota Semarang. Kekurangan air, khususnya air bersih biasanya terjadi ketika musim kemarau panjang, yang menyebabkan sumur-sumur warga mengalami kekeringan. Sebaliknya ketika masuk musim penghujan, maka sumur-sumur tersebut kembali terisi penuh. Sarana penyediaan air bersih seperti sumur artesis, sumur dangkal, tangki air dan instalasi penyediaan air bersih PAMSIMAS yang ada di Kelurahan Jabungan dirasa belum mampu mencukupi kebutuhan air warga masyarakat. Oleh sebab itu, diperlukan upaya untuk mengatasi permasalahan kekurangan tersebut melalui pemasangan Pipa Resapan Horizontal (PRH). Prinsip kerja PRH adalah membantu infiltrasi air permukaan untuk masuk kedalam tanah melalui pipa resapan horizontal. Resapan air melalui PRH tersebut, air dapat masuk kembali kedalam tanah sehingga dapat mengisi sumur-sumur dangkal. Metode pelaksanaan yang digunakan adalah sosialisasi kepada mitra terkait pemasangan dan pemeliharaan PRH. Mitra dalam hal ini adalah pihak Kelurahan Jabungan, PKK dan Karang Taruna. Adapun hasil yang diperoleh adalah terpasangnya PRH dengan diameter 6’’ dan panjang 3 m sebanyak 15 unit di lokasi yang telah ditentukan berdasarkan kriteria hasil survei titik lokasi PRH.
Pelatihan Ilmu Ukur Tanah bagi Mahasiswa Universitas Muhammadiyah Semarang (UNIMUS) dan Praktisi Konstruksi Muhammad Latif; Wardana Galih Pamungkas; Hendra Masvika
Jurnal Pengabdian KOLABORATIF Vol. 2 No. 1 (2024): January
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jpk.v2i1.6865

Abstract

Most civil engineering students and construction practitioners experience misconceptions about knowledge and even incorrect practical procedures for using measurement instruments. One of the misconceptions that is often encountered is the meaning of ordinary and extraordinary positions, the meaning of azimuth, the meaning of angles, directions, readings, and many more. Misconceptions in practice include the inaccurate process of centering, leveling, and targeting due to a misunderstanding of the pointing, targeting, and parallax processes. There are also often debates between students because of differences in interpretation of the influence of right or left rotation on horizontal readings or counting angles. On the other hand, the development of measurement and mapping surveys is increasingly rapid. However, measurement principles should not be ignored. These principles are the pillars of knowledge and the pillars of a surveyor's practice, with which fieldwork evaluations and decisions can be taken accurately and responsibly, both academically and practically. The measurement training activity using a water level tool is intended for Civil Engineering students at the Muhammadiyah University of Semarang (UNIMUS) and construction practitioners. This activity aims to improve understanding and skills so that participants can use the spirit level measuring instrument correctly. The method used is the delivery of theory, followed by practice in the field. The results obtained are an increase in participants' abilities in the measurement process and calculating measurement data based on the results of work and direct evaluation in the field.
Pelatihan Pembuatan Beton bagi Siswa SMK N 3 Semarang Muhammad Latif; Bambang Purnijanto; Hendra Masvika
Jurnal Pengabdian KOLABORATIF Vol. 2 No. 2 (2024): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jpk.v2i2.9545

Abstract

Concrete is a solid mixture that hardens, consisting of components such as cement, sand, gravel, and water that are mixed. Civil engineering construction is related to concrete, including the construction of roads, buildings, dams, houses, and irrigation channels. Considering the importance of knowledge related to concrete, students of SMK N 3 Semarang who are majoring in construction engineering and housing need to be well informed. Many vocational high school students are still unaware of the proper process of making concrete that meets the desired quality standards. Students of SMKN 3 Semarang, who are expected to be able to work immediately after completing their studies, need to be equipped with knowledge about the concrete-making process. The purpose of this activity is to improve the knowledge of SMKN 3 Semarang students regarding the quality of concrete materials, the making of K-225 quality concrete, and the value of the concrete slump test. The PkM team from Universitas Semarang conducted training on making concrete for SMK N 3 Semarang students using discussion methods and laboratory practice. As a result of this training, the majority of students understand the process of making concrete in terms of material quality, K-225 concrete mix design, and slump test testing.
EFFECT OF CHICKEN FEATHER WASTE ON CONCRETE MIXING ON COMPRESSIVE STRENGTH AND FLEXURAL STRENGTH Sutarno, Sutarno; Rahmawati, Diah; Masvika, Hendra
ASTONJADRO Vol. 10 No. 1 (2021): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v10i1.4330

Abstract

The materials that are often used in the world of construction both in bridges, water structures, and buildings is concrete. The characteristic of concrete is that it is strong withstand compressive forces, but weak in resisting tensile forces. Therefore, it is necessary to improve the characteristics of the concrete. Improving the characteristics of the concrete can be done by applying a fiber mixture to the concrete. There are two types of fibers used as a concrete mixture, namely synthetic fibers and natural fibers. The research conducted was concrete using chicken feather waste fiber which was categorized as natural fiber with a fiber length of 3 cm, the grade of the concrete used was 20 MPa and the percentage of additional chicken feather waste was 0%, 1%, and 2% of the volume of concrete. The test is the compressive strength and flexural strength of the concrete using a specimen cylinder 15x30 cm and beam 15x15x60 cm. Each percentage of chicken feather waste that is used as a concrete mixture is 5 samples. From the test results, it was found that the concrete with the addition of 0% chicken feathers obtained an average compressive strength value of 200.78 kg/cm2, concrete with the addition of 1% chicken feather fiber, the compressive strength value increased to 215.09 kg/cm2 and concrete with the addition of chicken feather fiber 2 % has a compressive strength value of 197.54 kg/cm2. Meanwhile, the flexural strength values obtained were 24.00 kg/cm2, 23.03 kg/cm2, 21.08 kg/cm2 for the percentage of 0%, 1% and 2% fibers, respectively. This shows that the concrete with the addition of bristle fibers the chicken has decreased the compressive strength value when it has reached its optimum level. While the addition of the percentage of chicken feathers to the flexural strength value does not have much effect on the flexural strength of the concrete which tends to decrease. This is influenced by the characteristics of the chicken feathers which are difficult to bond with the concrete as well as being easy to absorb water, so that the concrete takes a longer time to dry after the maintenance of the concrete.
The Coefficient of the Generating Function in the Form of a Lower Hessenberg Matrix Khasanah, Nur; Yazidah, Izzatul; Masvika, Hendra
JMT (Jurnal Matematika dan Terapan) Vol. 6 No. 2 (2024): JMT (Jurnal Matematika dan Terapan)
Publisher : Mathematics Study Program, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jmt.6.2.5

Abstract

This study aims to obtain the generating function with the lower Hessenberg matrix coefficients. The method used is to use Cramer's rule. The result of this research is the generating function which consists of a power series which is a collection of several terms.
Assistance in Planning the Construction of Closed House Chicken Coops in Kedungrejo Village, Rembang Regency Masvika, Hendra; Kusrin, Kusrin; Pudjihardjo, Hari Setijo; Purnijanto, Bambang
Dimas: Jurnal Pemikiran Agama untuk Pemberdayaan Vol. 23 No. 1 (2023)
Publisher : LP2M of Institute for Research and Community Services - UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/dms.2023.231.14893

Abstract

The high demand for poultry production has recently prompted members of the Mbesi Chicken Farmers Group in Kedungrejo Village, Rembang Regency, to focus on increasing productivity by optimizing the construction of their chicken coops. The closed-house system, suitable for the local environment and weather conditions, has been identified as the most appropriate type of poultry coop. However, the construction process is often outsourced, resulting in frequent design changes and price increases passed on to the breeders. To address this issue, the present Community Service (PkM) activity was carried out to assist farmers in creating design drawings for closed-house poultry coop buildings. The Participatory Action Research (PAR) method, involving direct mentoring, was employed to facilitate farmers in the process. The outcome of this community service was the submission of detailed design drawings for closed-house poultry coop buildings. An evaluation was conducted using pre-test and post-testassessments, revealing that 80% of participants could read and comprehend the design drawings for planning a closed-house chicken coop system. Accordingly, the findings indicated an improvement in the partner's competence in interpreting design drawings.
Evaluation of the Sragi Secondary Channel of the Kaliwadas Irrigation Area, Pekalongan Regency Wanto, Sri; Masvika, Hendra; Cahyono, Dhamang Budi; Purwanti, Hani
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 7, No 1 (2024): April
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.7.1.8-17

Abstract

The Sragi secondary channel is located in the Kaliwadas irrigation area, Pekalongan Regency has a length of 7,587 m. The position of the channel is in a rice field area which is used to optimize irrigation to support agricultural business productivity. The existing condition of the channel in the form of native soil causes frequent leaks. Technical handling is needed to repair irrigation buildings in the form of a study on the existing condition of the Sragi secondary channel through field surveys and checking physical conditions. Furthermore, identification of the level of damage to irrigation channels is carried out. From the problems that arise at the identification stage, recommendations are then given in the form of proposals for improvements to buildings and irrigation channels. The results of the field survey in the form of network tracing provide data that the level of physical and functional damage to the Sragi secondary channel infrastructure reaches >40%. The condition is categorized as very bad with the classification of severely damaged which requires repair or replacement. Most of the damage in the form of spots or localized occurred on the existing lining of masonry and precast concrete starting from Hm 50+00 to Hm75+68. The recommendations for improvement are in the form of dismantling the existing precast concrete lining according to the point of damage. It is recommended to repair the lining using K-300 precast concrete so that the structure of the irrigation channel is safe against the risk of deformation.
Co-Authors Abda Abda Adolf Situmorang Agus Darmawan Adi Agustina Wardani Andie Julian Arfa Andie Julian Arfa Angga Setiawan Pamungkas Angga Setiawan Pamungkas Annisa Zahrotun Na'imah Baehaqi Bagus Acung Billahi Bagus Acung Billahi Bambang Purnijanto Bambang Tutuko Bintang Husni Haikal Cahya Hari Prayoga Cahyono, Dhamang Budi Chatarina Umbul Wahyuni Dhamang Budi Cahyono Dhini Rahmahajsuly Diah Rahmawati Diah Rahmawati Diah Setiati Budiningrum Edy Susilo Eka Bogi Anisa Eka Bogi Anisa Etika Herdiarti Fahrudin Ahmad Fahrudin Ahmad Faizal Mahmud Faizal Mahmud Faris, Fikri Ferry Firmawan Fitria Maya Lestari Hani Purwanti Hari Setijo Pudjihardjo Intan Mayasari, Intan Izzatul Yazidah, Izzatul Kukuh Wisnuaji Widiatmoko Kusrin Kusrin Kusrin Kusrin, Kusrin Lila Anggraini Lilla Angraini Lindawati Maesa Widiyafi Marshanda Alifia Warda Misbakhus Siddiq Mohammad Haidar Ibnu Mas'ud Muhammad Latif Nur Khasanah Nurhidayati PERMATASARI, CITRA Pudjihardjo, Hari Setijo Pudjihardjo, Hari Setijo Purnijanto, Bambang Purwanto Purwanto Purwanto RA Rieke Aulia Assafira Ramadhon, Ardiana Siddiq, Misbakhus Siril Alfana Son Haji Sri Wanto Sriwanto Sriwanto Sudanti Sutarno Sutarno Sutik Sutik Syamsiar, Syamsiar Trias Widorini Wardana Galih Pamungkas Yonikha Rivani Zamaniah, Zamaniah