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Bulletin of Civil Engineering
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 27971104     EISSN : 27756351     DOI : https://doi.org/10.18196/bce
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Bulletin of Civil Engineering (BCE) is an international journal of civil engineering. This journal publishes original papers on interdisciplinary theoretical and practical research related to the broad spectrum of civil engineering, encompassing all related sub-topics. The journal provides a forum for the international civil engineering community to present and discuss matters of major interest, including new developments in civil regulations. Coverage includes Structures; Geotechnics; Transportation; Environment; Earthquakes; Water Resources; Hydraulic and Hydraulic Structures; Construction Management and Materials.
Arjuna Subject : Teknik (semua kategori) - Bangunan dan Konstruksi
Articles 7 Documents
 1 
Search results for , issue "Vol 1, No 2 (2021): Agustus" : 7 Documents clear
Identifikasi Manajemen Risiko Proyek Konstruksi Gedung Di Provinsi Aceh Kemala Hayati; Aldina Fatimah; Badrul Akmal
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.12402

Abstract

Risiko dalam proyek konstruksi merupakan suatu pontensi kejadian yang dapat menyebabkan kerugian yang muncul dalam satu periode waktu dan bisa terjadi secara alami dalam situasi tertentu, tujuan penelitian ini supaya risiko-risiko yang kemungkinan terjadi dalam proyek konstruksi gedung dapat terlebih dahulu diidentifikasi, sehingga risiko tersebut dapat di antisipasi. Pengolahan data dalam penelitian ini yaitu uji homogenitas, nilai signifikan yang didapat lebih besar dari 0,05 maka dapat dikatakan bahwa keseragaman responden, selanjutnya uji validitas, dari hasil pengujian validitas yang diperoleh, nilai rata rata setiap variabel adalah r hitung 0,466 dan nilai r tabel untuk signifikan 10%  = 0,2913, Maka Rhitung ≥ Rtabel hal ini menunjukkan bahwa pertanyaan pada variabel sudah valid, selanjutnya uji deskriptif yaitu untuk mengetahui risiko yang paling dominan yaitu pada X13 “Tidak menghitung mutual check 0 dengan tepat saat hendak melakukan pekerjaan” dengan nilai 4,424. Selajutnya menganalisis risiko dengan menggunakan metode Impact probability matrix kemudian risiko yang telah teridentifikasi dari dampak dikalikan dengan frekuensi kejadian sehingga dapat menentukan level risiko, dari hasil level risiko didapat risiko pada indikator mutu X3=12,98, pada indikator biaya X11=12,971, pada indikator waktu X21= 9,136 dapat disimpulkan semua risiko yang didapat berkisar 8-14 menunjukan risiko sedang (medium risk).
Analisis CBR Tanah Clayshale Akibat Distabilisasi Semen Edi Hartono; Gilang Permana Santoso
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.12415

Abstract

Clay shale merupakan batuan lunak yang memiliki potensi masalah pada kekuatan dan durabilitas bila tersingkap. Perbaikan tanah diperlukan bila digunakan sebagai lapis dasar jalan.  Salah satu metodenya adalah stabilisasi menggunakan semen. Penelitian ini bertujuan untuk mengetahui perbandingan nilai CBR dan pengembangan clay shale sebelum dan sesudah penambahan semen. Semen yang ditambahkan sebesar 10% dari berat total tanah kering. Semen dicampur dengan metode dry mix dan spray mix. Pengujian CBR menggunakan 3 variasi pemadatan yaitu 10, 25, 56 kali pukulan. Hasil penelitian menujukkan bahwa penambahan semen 10% pada 56 pukulan akan meningkatkan nilai CBR 38,40% dan menurunkan pengembangan 0,60%. Nilai CBR dengan metode dry mix lebih tinggi dibandingkan dengan metode spray mix.Clay shale is a soft rock that has potential problems in strength and durability when exposed. Soil Improvement Required when used as the subgrade. One of the repair methods is stabilization using cement. This study aims to determine the value of CBR and clay shale swelling after the addition of cement. Cement added by 10% of dry soil weight. The cement is mixed by dry mix and spray mix methods. CBR testing uses three variations of compaction 10, 25, 56 blows. The results showed that adding 10% cement and 56 blows increased the CBR value by 38.40% and decreased the swelling by 0.60%. The CBR value with the dry mix method is higher than the spray mix method.
Pengaruh Rendaman Air Laut Pasang Surut terhadap Campuran Lapis Aspal Beton AC-WC dengan Modifikasi Steel slag Ramah Lingkungan Emil Adly
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.11060

Abstract

Road pavement near coastal area has greater chance for seawater immersion. Along the road of Pantai Utara especially on Jalan Kaligawe Raya, Semarang, Jawa Tengah, tidal seawater flood often occurs. Road pavement that is immersed by water is potentially damaged since water is one of the causing factors of damage in road pavement. Recurring weight also will decrease the design life and the road degrades faster. The buildup of unused waste from steel factory can be an alternative material for modified asphalt mix. The test result of 6, 12, and 24 hours seawater immersion indicated poor marshall characteristic value marked by the decrease of density value, VFA (Void Filled Asphalt), stability, and MQ (Marshall Quotient), and indicated the increase in VIM (Void In the Mix), VMA (Void in Mineral Aggregate), and flow.
Perbaikan dan Perkuatan Fondasi Tiang Bor pada Bangunan Gedung Perkuliahan dengan Penambahan Tiang Pancang Bulat Annisa Junaid
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.12483

Abstract

Fondasi harus dibangun di atas tanah keras agar bangunan tetap stabil dan kokoh. Memastikan kekuatan fondasi adalah upaya dini untuk mencegah sudden collapse pada bangunan di kemudian hari. Penelitian ini dilakukan untuk mengetahui kuat dukung tanah pada ujung tiang fondasi dan mengamati sejauh apa kerusakan beton tiang bor pada bangunan yang baru masih dalam tahap pembangunan fondasi. Data penelitian diperoleh dari hasil pengujian PDA (Pile Driving Analyzer) dan PIT (Pile Integrity Test) pada fondasi bangunan jenis bored pile D80. Pada gedung yang berdekatan, yang dikerjakan dengan sistem yang sama dan menggunakan spun pile D50. Data kuat dukung ultimate hasil manometer alat uji hidraulik 175 ton untuk pile D50. Dari analisis uji PDA, diperoleh nilai kuat dukung ijin rata-rata tiang bor adalah 70,25 ton (51%). Analisis ulang terhadap kombinasi beban menghasilkan tambahan spun pile di 44 titik. Pada beton bored pile yang mengalami kerusakan, dilakukan perbaikan seperti penambahan cor pada lapisan luar (concrete-jacketing) untuk menutupi lapisan tulangan yang terekspos, dan penambahan tulangan terpisah di sisi dalam beton untuk antisipasi bila tulangan luar rusak akibat korosi.The foundation must be placed on hard rock so that the building remains stable and solid. Thus, ensuring the strength of the foundation is an early effort to prevent sudden collapse of the building in the future. This research was conducted to determine the bearing strength of the soil at the ends of the foundation piles and to observe the extent of the damage to the drill pile concrete in the new building which is still in the foundation construction stage. The research data were obtained from the results of PDA (Pile Driving Analyzer) and PIT (Pile Integrity Test) testing on the foundation of the bored pile type D80 building. The adjacent building is being worked on with the same system and using a D50 spun pile. With the ultimate bearing strength data, the results of the hydraulic tool manometer = 175 tons for D50 piles. PDA test analysis obtained the average allowable bearing strength of the drill pile is 70.25 tons (51%). The re-analysis of the load combination resulted in additional spun piles at 44 points. In the damaged bored pile concrete, namely by adding cast to the outer layer (concrete-jacketing) to cover the exposed reinforcement layer, and adding separate reinforcement on the inside of the concrete to anticipate if the outer reinforcement is damaged due to corrosion.Fondasi harus dibangun di atas tanah keras agar bangunan tetap stabil dan kokoh. Memastikan kekuatan fondasi adalah upaya dini untuk mencegah sudden collapse pada bangunan di kemudian hari. Penelitian ini dilakukan untuk mengetahui kuat dukung tanah pada ujung tiang fondasi dan mengamati sejauh apa kerusakan beton tiang bor pada bangunan yang baru masih dalam tahap pembangunan fondasi. Data penelitian diperoleh dari hasil pengujian PDA (Pile Driving Analyzer) dan PIT (Pile Integrity Test) pada fondasi bangunan jenis bored pile D80. Pada gedung yang berdekatan, yang dikerjakan dengan sistem yang sama dan menggunakan spun pile D50. Data kuat dukung ultimate hasil manometer alat uji hidraulik 175 ton untuk pile D50. Dari analisis uji PDA, diperoleh nilai kuat dukung ijin rata-rata tiang bor adalah 70,25 ton (51%). Analisis ulang terhadap kombinasi beban menghasilkan tambahan spun pile di 44 titik. Pada beton bored pile yang mengalami kerusakan, dilakukan perbaikan seperti penambahan cor pada lapisan luar (concrete-jacketing) untuk menutupi lapisan tulangan yang terekspos, dan penambahan tulangan terpisah di sisi dalam beton untuk antisipasi bila tulangan luar rusak akibat korosi.
Pengaruh Penambahan Serat Limbah Plastik HDPE terhadap Kuat Tekan pada Mortar Yoga Aprianto Harsoyo; Muhammad Rifqi Fauzi
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.12418

Abstract

Mortar is a construction material commonly used in building and road infrastructure. Some constructions that use mortar include Lane Concrete (LC), species, light brick adhesives, wall plaster, mechanical installation, and others. HDPE plastic waste fiber (High density polyethylene) in this study is a mixture of materials as binders and cement substitutes. HDPE plastic is one type of plastic that when viewed visually is classified as concentrated, where the use of this type of plastic is usually used for beverage bottles. The HDPE plastic type is easy to recycle. In 2015, global plastic waste in the world was recorded at 2.5 billion tons per year, so this research is expected to reduce the amount of plastic waste in Indonesia. The purpose of this study was to analyze the  effect of mixing HDPE plastic waste fibers on compressive strength and mortar weight. This HDPE variations of 0%, 2%, 4%, and 6% is used from the weight of the cement. This study was carried out to obtain the compressive strength at the ages of 7 days and 28 days using cube specimens with dimensions of 15 cm × 15 cm × 15 cm. Based on the results of the test, the highest compressive strength for mortar at of 2% fiber variation at 28 days is 14.47 MPa. The compressive strength of mortar at the age of 7 and 28 consecutive days increased by 11%. While the addition of fibers, compressive strength of mortar decreases with the increasing number of fiber mixtures. Fiber mortar decreased in weight from 7696 grams to 7640 grams, 7422 grams, and 7280 grams, for fiber of 2%, 4%, and 6% respectively.
Analisis Limpasan Langsung Metode SCS Menggunakan Data Hujan TRMM Studi Kasus Subdas Code Hulu Puji Harsanto; Muhammad Sufyan Tsaury
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.12417

Abstract

Availability of sufficient data as input data is important. Data availability tends to have several data problems, such as the lack of data availability, incomplete data, or the number of stations that are less scattered. As the development of the technology problems, those probelms can be solved by replacing ground-based observation data with satellite observations that have high spatial and temporal resolution, wide area coverage, fast access, and economics. This research was conducted to validate and correct TRMM satellite data on observation data at the AWLR Gemawang station with the SCS Method. The results of this study showed a delay in the average measurements of satellite rainfall and surface approximately 8.5 hours based on the data analysis used in this study. The results of the model error analysis can be concluded that TRMM rainfall data can be used in these needs. However, there is still an error in the TRMM data, which is on the data of January 18, 2018 which results in a hydrograph (Ew) waveform error of 11.843. From the conformity index and efficiency analysis, TRMM satellite data gets the correlation coefficient average ARR-AWLR debit of 0,2416 which is categorized as low efficiency data and TRMM-AWLR of 0,1041 which is categorized as quite low coefficient data, while the efficiency coefficient gets an average value 1,67 which is categorized as highly efficient optimization data. 
Penilaian Kerentanan Bangunan Terhadap Gempa Bumi pada Gedung Perkuliahan Berlantai Tinggi di Yogyakarta Muhammad Heri Zulfiar; Muhammad Irhab Indrastata Zai
Bulletin of Civil Engineering Vol 1, No 2 (2021): Agustus
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/bce.v1i2.11075

Abstract

Yogyakarta, an area that has a high level of risk for earthquakes, can result into potential damage to the buildings erected it. The earthquake that occurred on May 27 th 2006 still leaving a trauma, according to BNPB (2012) the yogyakarta quake caused 4.674 people die and 19.897 others had seriously injuries. Most victims were caused by the falling building and materials. This disaster caused heavy damage to buildings at 96.790, with 117.075 moderate damage, and as well as 156.971. The construction of the new building in Yogyakarta is expected to be able to apply the principles of the earthquake resistant building to minimize the impact of it. Dasron Hamid Research and Innovation Center is the one of building which currently under construction that apply the principles. This research aim to determine the level of vulnerability of RIC buildings to earthquakes using RVS (Rapid Visual Screening) based on FEMA P-154 2015. It was carried out by quantitative methods and direct observation at the construction site by filling in the FEMA P-154 form, this building is consist of 8 floor with 1 ground floor. The form that used is a high seismic type, which means the level of seismicity in the research location has a high earthquake spread. Based on the research, was got result obtain value of 2,3 with the vulnerability of the building to collapse is 0,5%, so the building is safe against earthquakes. This is because the building is erected after a reference or code exists even though it has irregularities such as vertical irregularity and, plan irregularity. 

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