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MEDIA KOMUNIKASI TEKNIK SIPIL
Published by Universitas Diponegoro
ISSN : 08541809     EISSN : 25496778     DOI : -
Core Subject : Engineering,
Media Komunikasi Teknik Sipil (ISSN 0854-1809) published twice in a year, in July and December. The article can be product of researches, scientific thoughts or case study, in civil engineering and isn’t formed by politics, commercialism, and subjectivity unsure. This scientific journal contains articles of thought and research results in Civil Engineering that have never been published in scientific journals or other media.
Arjuna Subject : -
Articles 471 Documents
Evaluasi Perilaku Lentur Balok Tinggi LVL Sengon dengan Pengekang Lateral pada kedua Tumpuan Ali Awaludin; Urwatul Wusqo
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 27, Nomor 2, DESEMBER 2021
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (650.715 KB) | DOI: 10.14710/mkts.v27i2.35911

Abstract

Slender beams (beams having a large section height to width ratio ( )) are commonly used in a structure that needs a large bending moment capacity. However, the use of slender beams in a structure is susceptible to overturning and torsion occurrence. Therefore, lateral bracing is usually placed in several points of the beam to prevent lateral-torsional buckling. In this study, a three-point bending test was conducted to evaluate the capacity of 250 mm x 50 mm x 2500 mm Laminated Veneer Lumber (LVL) beams made from Sengon. Two lateral supports were placed at both ends to prevent the beam's lateral displacement. The bending test result shows that the ultimate load of the LVL beam reach 27.88 kN before failure. Furthermore, the LVL beams' bending capacity was calculated using the mechanical properties provided by several previous studies. The LVL beam's capacity was predicted using manual calculation (based on SNI 7973: 2013) and numerical analysis. Numerical analysis was performed using ABAQUS software, and the results were evaluated using the Tsai-Hill and maximum strain failure criterion. The results showed that the maximum strain criterion provides a better prediction of the LVL beam's capacity than Tsai-Hill failure criterion.
Evaluasi Banjir di Kecamatan Bula Kabupaten Seram Bagian Timur Febryhandi Eka Kusuma Putra; Ahmad Zaki Romadhoni; Idham Riyando Moe
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 27, Nomor 2, DESEMBER 2021
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1024.776 KB) | DOI: 10.14710/mkts.v27i2.36163

Abstract

Bula District is strategic region in Seram Bagian Timur Regency which often experienced flood event especially in downstream areas. Flood Event that occurs causing loss of materials, even human life. This research was conducted to identify inundation that caused by the flood using two-dimensional inundation model. Model’s component consists of three part those are hydrology module, flood routing and inland flooding. Flood simulation result was calibrated with flood observation map in Bula District. Flood simulation resulted with flood discharge 25-year times period shows that inundation area that probably happen in Bula District is 5,4 km2 and flood volume that probably happen is 7,406,708 m3. Bila Besar Watershed contribute >70% to flood event that occurs based on inundation area and flood volume. Based on map overlay between simulation result into Satellite Google Imagery shows that 31.8% of 2,390 unit building in Bula District probably inundated by flood. 
Potensi Erosi Buluh Akibat Mata Air Pada Bendungan (Studi Kasus : Bendungan Titab) I Putu Hariawan Anggara; Sri Sangkawati Sachro; Thomas Triadi Putranto
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 27, Nomor 2, DESEMBER 2021
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (779.077 KB) | DOI: 10.14710/mkts.v27i2.40192

Abstract

The dam is one of the water infrastructures that can function as conservation, utilization, and control of thedestructive power of water. Titab Dam is one of the dams in Indonesia that has multifunction as irrigationwater, raw water and hydropower. This dam is a type of rock fill dam with an upright core which has a peaklength of 210 m, a width of 12 m, and a height of 78 m from the deepest foundation. This dam was built withrelatively complex geological conditions and landslides occurred on the spillway walls and springs were foundin the landslides so it was necessary to analyze the potential for piping due to the presence of springs. Thisstudy examines the potential for piping due to the influence of springs near the dam. The study was conductedbased on instrument observations during the inundation period from 2016 to 2019. The analysis was carriedout by calculating the acceptance criteria (KP) for seepage and seepage index (Qi) to determine seepagebehavior in the dam body and a safety factor analysis (FK) for piping hazards was carried out by comparingthe hydraulic gradient based on piezometer instrumentation readings and the hydraulic gradient of the dambody core material. Based on the calculation of the seepage acceptance criteria and the seepage index, theseepage that occurs in the Titab Dam is not safe because it exceeds the requirements, the average seepageoccurs is 6.350 > 0.56 liter/minute/m and Qi > 1. However, the analysis of the safety factor of piping hazardis still safe that is equal to 8,390 > 4.
Kajian Kapasitas Kelompok Tiang pada Tanah Lunak Menggunakan Skala Kecil Laboratorium Andry Galardo Naibaho; Aazokhi Waruwu
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 27, Nomor 2, DESEMBER 2021
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.558 KB) | DOI: 10.14710/mkts.v27i2.33737

Abstract

Soft clay is one type of subgrade that is problematic in infrastructure development. Pile reinforcement is an alternative to stabilize and increase the bearing capacity of soft clay soils. This study is expected to determine the capacity of the pile group from observations through a small-scale laboratory model and its comparison with the results of the analysis. Reinforcement of the piles used are concrete piles and wooden piles. The research was conducted through model testing on single piles and group piles in soft clay soil. The piles have a length of 20 cm and a diameter of 2 cm with the number of 1, 2, 4, and 9 piles. The study results show that the overall bearing capacity of the observed results is not much different from the results of the analysis. The average bearing capacity of the wooden and concrete piles is 20% and 18% greater than the analysis. The increase in pile capacity for each additional number of piles from the observations is not as high as the analysis. There is a tendency for the soil in the pile group to move down together, so that the capacity value of the pile group on soft clay is smaller than the single pile capacity value multiplied by the number of piles in the pile group. 
Kinerja Ketidakberaturan Kekakuan Struktur Menggunakan Metode DDBD dan CSM Ika Nurelisa; Amalia Amalia
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1, JULI 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.437 KB) | DOI: 10.14710/mkts.v28i1.33629

Abstract

Konsep perencanaan bangunan tahan gempa saat ini mengarah pada konsep berbasis kinerja (performance based design). Dalam penelitian ini digunakan metode direct displacement based design (DDBD) untuk mendesain beban gempa dan capacity spectrum method (CSM) untuk menentukan level kinerja bangunan dengan menggunakan analisis pushover. Tujuan dari penelitian ini adalah untuk menganalisis dan membandingkan kinerja bangunan beraturan dengan bangunan yang memiliki ketidakberaturan kekakuan tingkat lunak. Bangunan yang ditinjau dalam penelitian ini terdiri dari 3 variasi bangunan dengan jumlah 8 lantai. Variasi A bangunan beraturan, Variasi B bangunan dengan ketidakberaturan kekakuan tingkat lunak pada lantai 1, dan Variasi C bangunan dengan ketidakberaturan kekakuan tingkat lunak pada lantai 5. Nilai perpindahan maksimum terjadi pada bangunan Variasi C, arah X sebesar 0,281 m dan arah Y sebesar 0,304 m. Mekanisme terjadinya sendi plastis pada Variasi A, B, dan C sesuai dengan konsep desain strength column weak beam. Keruntuhan paling awal terjadi pada bangunan Variasi B dan paling akhir terjadi pada bangunan Variasi A. Kinerja struktur bangunan Variasi A, B dan C menggunakan metode CSM berada pada level Damage Control.
Inovasi Metode Konstruksi Prefabrikasi untuk Efisiensi Biaya dan Waktu pada Proyek Gedung Tinggi Perum Perumnas Yusra Aulia Sari; Yanweri Dinata
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1, JULI 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1181.716 KB) | DOI: 10.14710/mkts.v28i1.38640

Abstract

Prefabrication has been widely used in construction projects. Prefabrication improves construction speed, architectural quality, material efficiency, and worker safety while limiting construction's environmental impact than conventional construction practices built on site. This research explains the advantages of prefabricated construction methods and offers an alternative method for innovation for the High Rise Building Project of Perum Perumnas. The prefabrication method is an alternative solution based on the SWOT analysis, and software for modeling and structural design is STAAD.Pro V8.I by Bentley System, inc. The research results have shown that prefabrication methods in the High Rise Building Project of Perum Perumnas can save 7% (deviation = 868.47 million) more than the current construction method (conventional). In terms of time, the prefabrication method is faster than traditional methods, with a time difference of 371 days. The estimated time required to complete upper structure work using conventional methods is 557 days. In comparison, the time needed to complete upper structure work with prefabricated methods is only 186 days, assuming the working time is eight hours per day. And the risk analysis is generally mentioned. Therefore, based on the calculation results, it can be concluded that the prefabrication method can increase the number and quality of development production in the High Rise Building Project of Perum Perumnas.
Penerapan Value Engineering Pekerjaan Balok, Kolom Dan Pelat Lantai (Studi Kasus: Gedung Perpustakaan Daerah Kabupaten Bengkalis) Monika Natalia; Zulfira Mirani; Jufrinal Syahputra
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1, JULI 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (683.77 KB) | DOI: 10.14710/mkts.v28i1.33982

Abstract

Cost construction must be planned efficiently and optimally. Value Engineering is planned approach with the aim of identifying and streamlining unnecessary costs with functional limitations and work quality (Firda, 2018). In reality, structural work using concrete estimated to over design, overcost (Apriani, 2020). This research was Bengkalis Public Library project. This building consists of 3 floors with an area of 2250 m2. The structure of beams, columns and slabs reinforced concrete. Dimensions of column 40x40 cm, main beam dimensions 40x60 cm, joist beam dimensions 25x40 cm, roof beam dimensions 30x50 cm, and slabs 15 cm with D10-100. Cost of reinforced concrete Rp. 4.297.170.000,00. In value engineering, the conversion of reinforced concrete to profile steel, cost of profile steel Rp. 4.089.619.000,00. it is obtained that the column uses WF 250.250.11.11, WF 400.200.7.11 main beam, WF 200.150.6.9 joist beam and WF 250.125.6.9 roof beam and floor slabs are converted to flourdack plate using 0.75 thickness bondack mm with wiremesh reinforcement M10-150. Cost ratio reinforced concrete and steel profiles is Rp. 207,551,000, -. Steel profiles is 5.075% cheaper than reinforced concrete structures.
Pendekatan Statistik Model Hubungan Tegangan-Regangan Beton dengan Agregat Daur Ulang Namira Risza Pasya; Yunita Idris; Abdullah Abdullah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1, JULI 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.603 KB) | DOI: 10.14710/mkts.v28i1.40075

Abstract

Penggunaan agregat daur ulang menjadi salah satu alternatif solusi untuk permasalahan ketersediaan agregat alam sebagai bahan beton. Tujuan dari penelitian ini adalah untuk menganalisis kurva hubungan tegangan-regangan tekan beton berdasarkan data studi literatur dan menggunakan pendekatan statistik. Dalam penelitian ini ditinjau kuat tekan (f’c), modulus elastisitas (Ec), dan regangan (εo) sebagai dasar analisis. Penelitian menggunakan 124 data dari 25 jurnal peneliti terdahulu dengan proporsi campuran agregat daur ulang sebesar 50% dan 100% untuk mendapatkan suatu model hubungan kurva tegangan- regangan. Metode yang digunakan adalah analisis regresi linear sederhana menggunakan aplikasi Statistical Package for The Social Sciences (SPSS). Penelitian ini dibagi atas tiga fase analisis, yaitu analisis untuk hubungan tegangan-regangan untuk keseluruhan data, tanpa menggunakan zat aditif, dan menggunakan zat aditif. Hasil analisis pengaruh FAS terhadap kuat tekan beton menunjukan nilai signifikansi yang lebih kecil dari 0,05 yang merupakan batas dari nilai signifikansi. Ini menunjukkan bahwa nilai FAS memiliki pengaruh terhadap nilai kuat tekan beton yang menggunakan agregat daur ulang.
Sistem Paving Block Lolos Air untuk Mendukung Konsep Water Sensitive Urban Design di Kecamatan Bayat Kabupaten Klaten Desyta Ulfiana; Novia Sari Ristianti; Nurhadi Bashit; Yudi Eko Windarto
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1, JULI 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (634.336 KB) | DOI: 10.14710/mkts.v28i1.43103

Abstract

Flood and drought conditions due to the global crisis occurred in Bayat District, Klaten Regency. This is due to the rural characteristics of the area, where land has been converted from forest to agricultural land and settlements. This condition causes rainwater cannot infiltrate into the ground, thereby increasing runoff and reducing groundwater reserves. Therefore, the concept of Water Sensitive Urban Design (WSUD) is applied to this location to reduce the risk of water disasters. One of the WSUD technologies that can be applied is the permeable paving block system. This system can help infiltrate water to the ground thereby reducing runoff that causes flooding and storing water to replenish groundwater reserves. The design is planned in the pilot area of Jotangan and Krikilan Villages, Bayat District by applying a partial exfiltration pavement system. The structural design of the pavement layers is in the form of a permeable paving block with a compressive strength of 21.29 MPa with a thickness of 10 cm, a bedding layer of 6 cm, an open-graded base of 18 cm, and a drain pipe with a capacity of 3,78 mm/hour. The permeable paving block system in the WSUD pilot area can reduce runoff by 62.64%.
Prediksi Kuat Lentur Balok Beton dengan Menggunakan Program Response-2000 dan Persamaan Pendekatan Fanny Monika; Kholil Muqorrobin; Hakas Prayuda; Talitha Zhafira; Lilis Tiyani
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1, JULI 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.459 KB) | DOI: 10.14710/mkts.v28i1.42017

Abstract

Flexural strength is one of the mechanical properties of concrete that should be tested, especially for concrete that serves as a beam and is subjected to flexural loads. However, the assessment of flexural strength in concrete frequently relies solely on a mathematical approach that several previous researchers have found. Concrete structures continue to evolve, particularly in the use of more diverse and sustainable constituent materials. Meanwhile, the generated equations use conventional concrete without adding cementitious or replacement components. Therefore, it is necessary to investigate whether these equations can accurately predict the flexural strength of concrete with diverse constituent materials. This investigation was undertaken by reviewing 72 data sets derived from the experiment by previous researchers. Each set of test data will be compared to various formulas and will also be compared to the analysis performed using Response-2000. The results show that the correlation between Response-2000 and the experiment was 0.8207 with the linear regression equation y = 1.1326x + 1.0016. The flexural strength analysis using various approach formulas resulted in an average correlation R² of 0.8246, or 82.46% correlated to the results of the flexural strength of laboratory tests.

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