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Rekayasa Sipil
Published by Universitas Brawijaya
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Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
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Articles 551 Documents
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KAJIAN KEKUATAN STRUKTUR BANGUNAN REKLAME DI KOTA YOGYAKARTA Bambang Herumanta; Dian Sestining Ayu
Rekayasa Sipil Vol 13, No 2 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.02.8

Abstract

Seiring dengan adanya pasar bebas, semakin meningkatkan persaingan di dunia perekonomian, salah satunya di bidang perdagangan. Para pengusaha berusaha semaksimal mungkin untuk menjual produk – produknya agar dapat diterima oleh masyarakat, dengan cara menawarkan-nya baik itu dengan cara promosi langsung maupun dengan memasang iklan di media elektronik maupun di media cetak yang berupa gambar – gambar yang semenarik mungkin dan mudah diingat, hal ini juga banyak kita jumpai di fasilitas – fasilitas umum, salah satunya di jalan – jalan atau yang sering disebut reklame. Bangunan Reklame adalah reklame yang terdiri dari bidang reklame berikut komponen struktur yang memikulnya dan segala sesuatu yang terinstalasi pada bangunan tersebut.Pada kenyataan di lapangan masih banyak pemasangan serta penempatannya yang kurang sesuai dengan peraturan pemerintah, dan sering kali mengganggu pengguna jalan yang menimbulkan ketidak-nyamanan. Bahkan pada saathun dan angin kencang sering terjadi bangunan reklam roboh dan menimpa kendraan yang sedang lewat di dekat bangunan reklame.Penelitian ini bertujuan untuk melakukan perhitungan untuk memprediksi kekuatan struktur penyangga papan reklame dengan mempertimbangkan: dimensi papan reklame, dimensi tiang penyangga, ketinggian dan kecepatan angin. Studi kasus kecepatan angin diambil di Kota Yogyakarta selama 5 tahun terakhir. Pada penelitian ini dilakukan pengujian tarik kekuatan material tiang penyangga reklame dan perhitungan analitik papan reklame berukuran luas lebih dari 20 m2, dengan ukuran tiang diameter dan ketebalan yang disesuaikan dengan data konstruksi perusahaan advertising. Perhitungan analitik dilakukan terhadap tiang penyangga papan reklame dengan satu tiang penyangga. Pengujian laboratorium terhadap material Plat baja hitam dan galvanis yang banyak digunakan pada tiang papan reklame menunjukkan kekuatan luluh 303,92 MPa dan kekuatan maksimum 303,94 MPa. Hasil perhitungan menggunakan persamaan analitik yang telah dilakukan pada papan reklame dengan contoh  di Yogyakarta, diketahui bahwa papan reklame dengan ukuran 3x7 m2, 4x7 m2dan 4x10 m2 yang dibuat oleh perusahaan periklanan dinyatakan aman karena nilai tegangan kritis maksimum tidak melebihi tegangan yang diizinkan.
MITIGASI BENCANA MENGGUNAKAN PETA FAKTOR KEAMANAN LIKUIFAKSI BERDASARKAN CONE PENETRATION TEST (STUDI KASUS ITERA) Ahmad Yudi; Sayed Ahmad Fauzan; Nugraha Bintang Wirawan
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.3

Abstract

Institute Technology of Sumatera (ITERA) located on Sumatera Island, take place on Lampung Selatan (South Lampung. As the coastal region, Lampung Selatan dominated by the sandy soil which allows the possibility of the Liquifaction. The objectives of this research is to mitigate the Liquifaction with analyze using Liquifaction of the safety factor map under the deterministic method. In order to establish the development of Institute Technology of Sumatera (ITERA, this research expected can be used as the consideration to mitigate the damage in relation with the site condition. Deterministic method is the ratio comparison of the Cyclic Resistant Ratio (CRR) and the Cyclic Stress Ratio (CSR) effected by the earthquakes. Cyclic Stress Ratio (CSR) depends on the depth of the soil layer, total vertical pressure, effective vertical pressure, earthquake’s magnitude and the peak ground acceleration. Meanwhile, the Cyclic Resistance Ratio (CRR) calculated by the correlation of the empirical result of CPT. The safety factor value analyzed by the comparison value of CSR and CRR that pointed on 12 CPT location. In result, take the test location on ITERA, it is known that the safety factor in this site is on the safe zone and have been described on the color zone on the map as the disaster mitigation.
ANALISIS PERILAKU EFEK RETROFIT KOLOM BETON BERKOMPOSISI STEEL FIBER (ENGINEERED CEMENTITIOUS COMPOSITE / ECC) AKIBAT BEBAN AKSIAL DENGAN MENGGUNAKAN SOFTWARE BERBASIS FINITE ELEMENT ANALYSIS Bagas Rahmandita Subchan; Gati Annisa Hayu; Entin Hidayah
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.8

Abstract

This study presents a simulation analysis of the non-linear behavior of retrofit concrete material due to uniaxial loads modeled in the form of cylinders measuring 150 mm in diameter and 200 mm in depth using the ABAQUS. Analysis of this auxiliary program includes cases of normal concrete retrofit, concrete with retrofit concrete with a composition of 1% steel fiber, and concrete with retrofit concrete composed of 2% steel fiber. From the results of the study conducted, it was shown that in modeling the properties of concrete damaged plasticity in ABAQUS, the use of accurate compressive behavior equations for concrete cases with normal concrete retrofit was core concrete and retrofit concrete using the Alfarah, et al equation. For the case of concrete with steel fiber composition retrofit, core concrete uses the Alfarah equation, and retrofit concrete uses Zhou Jiajia, et al. Whereas to model the tensile behavior accurately in the case of concrete with normal concrete retrofit using the Alfarah, et al equation. And the case of concrete with retrofit steel fiber compositions using the CEB-FIB equation and the Ali & Nehdi equation. The results of ABAQUS analysis of force vs. displacement show a graphical pattern close to the similarity of retrofit concrete column experimental results ECC1 error force ratio and displacement 14.86% and -10.60%, and ECC2 14.82% and 8.01). Based on the stress analysis shows that there is a gradual increase in core concrete where the peak of stress is found in the core area of the concrete core and in the retrofit area is divided into two regions, namely stressing on the center and pulling on a small part of upper and lower column retrofit.
Analisis Manajemen Risiko Pelaksanaan Pembangunan Jalan Tol (Studi Kasus : Proyek Pembangunan Jalan Tol Bekasi - Cawang - Kampung Melayu) Nia Rahmawati; Andi Tenrisukki Tenriajeng
Rekayasa Sipil Vol 14, No 1 (2020)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2020.014.01.3

Abstract

Construction of highway will increase the economy but it can’t be separated from risks. The purpose of this study is to analyze the risks at the stage of the implementation of highway construction and mitigation to minimize the negative impact. The study uses Descriptive Analysis and Analytical Hierarchy Process in highway construction of Bekasi-Cawang-Kampung Melayu. Based on the result of analysis, the most dominant risk in aspect: 1)Politics:change of structure in government; 2)Environment: land acquisition; 3)Economy: owner’s late payment; 4)Finance:high overhead; 5)Nature: weather delay; 6)Project: material delivery delay; 7)Human: fatigue caused overtime; 8)Technical: nonconformity of volume in contract and reality; 9)Criminal: loss of materials and equipment; 10)Safety: lack of worker awareness. Then the dominant risk will be mitigated.
Pengaruh Variasi Mutu Beton Bertulang Terhadap Cepat Rambat Gelombang Dengan Menggunakan Metode Non Destructive Test Lingga Ariya Dwisyahputra; Indradi Wijatmiko; Christin Remayanti Nainggolan
Rekayasa Sipil Vol 14, No 1 (2020)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2020.014.01.8

Abstract

Preferably in testing, building structures need not be destroyed. Tests that can be used on the concrete can use non-destructive methods that do not damage the test objects. Examples of testing can use UPV tests that are aimed at knowing the quality of concrete from the pulse velocity. The test objects used in this study are reinforced concrete beams with dimensions 20 x 20 x 100 cm. Test objects are differentiated into 3 quality variations of reinforced concrete with quality of concrete12.5 MPa, 18.75 MPa, and 25 MPa. To conduct analysis of the concrete density used PUNDIT PL-200. Ultrasonic pulse velocity into parameters on this test. From the results of the tests, there are differences in the value of different coefficient of the R2 determination. Acquired coefficient value of determination R2 = 0.9076 in direct method. The coefficient value of determination R2 = 0.8718 in the semi-direct method. Coefficient value of determination R2 = 0.3042 at Indirect Method 2 point, and in indirect method 3 point the coefficient value of determination R2 = 0.7524. From this research also obtained comparisons between the three methods, namely between the direct method and the semi-direct method, direct method and indirect method, also semi-direct method and indirect method.
STUDI PENGARUH PENAMBAHAN SERABUT KELAPA TERHADAP KARAKTERISTIK MARSHALL PADA CAMPURAN ASPAL PORUS Syaviq, Muhammad Fahrus; Arifin, M. Zainul; Bowoputro, Hendi; Djakfar, Ludfi; Ambarwati, Lasmini
Rekayasa Sipil Vol 12, No 2 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2018.012.02.3

Abstract

Porous asphalt is a solution to avoid puddles on the road because it has a pore large enough to drain the surface water. However, porous asphalt has low stability, so it is necessary to improve the Marshall stability on a porous asphalt mixture. The purpose of this research is to know the optimum composition of the asphalt content, the coconut fiber content and the coconut fiber length and to determine whether or not there is an effect of adding coconut fiber to the Marshall properties on a porous asphalt mixture. In this study, the treatment used is by making porous asphalt mixture with a variation of the asphalt content of 4%, 5% and 6% and a variation of the coconut fiber content of 0.5%, 0.75% and 1% and a variation of the coconut fiber length of 2.5 mm 5 mm and 7.5 mm to determine the optimum composition of the porous asphalt mixture. The gradation standard used in this study is the Australian Asphalt Gradient Standard and for its specifications using the Marshall characteristics of the Australian Standard (AAPA). Using the response surface method, the optimum value for the asphalt content is 4% and the optimum value of the coconut fiber is 0.75%. The addition of coconut fiber was able to increase the MQ value by 119% from 112.56 kg / mm to 246.64 kg / mm and the stability value 61.56% from 388.32 kg to 627.38 kg. However, the addition of coconut fibers decrease the VIM rate by 18.6% from 20.27% to 18.6% and the flow value by 20% from 3.24 mm to 2.7 mm. These values meet the requirements of porous asphalt?s Marshall characteristics for Australian gradation standard. It is necessary to do a further research using other gradation standard.
Studi Analisis Struktur Living Quarter Pada Floating Production System di Perairan Lepas Pantai Indonesia Pramana, Dewa Ketut Surya; Nurlina, Siti; Waluyohadi, Indra; Hidayat, M. Taufik
Rekayasa Sipil Vol 12, No 2 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2018.012.02.8

Abstract

Offshore Unit is one of vital infrastructure in gas and oil production. There are many kind of offshore structure which use in gas and oil industry, one of it is a Floating Production System. Floating Production System is system where a modified tanker ship uses by the company of gas and oil to process hydrocarbon, nature gas, and oil. Technically FPS is a tanker ship that produce gas and oil nut can not storage directly while producting, that’s why there must be another storage ship while the tanker ship producing. In this living quarter structure analysis constitute on structure analysis in transportation condition. In this living quarter structure analysis utilize SAP2000 V.19 software which obtain bigest moment, shear, and axial from 8 different wave direction that accepted by the ship’s hull. Output software analysis and manual analysis shown that main steel structure of living quarter capable hold the loads that applied, which is structure load, dead and live load, wind load, and acceleration load.
ANOMALI HUJAN BENGAWAN SOLO HILIR 1979 – 2017 SERTA KETERKAITANNYA DENGAN EL NIÑO DAN LA NIÑA Heri Mulyanti; Ayu Kurnia Ratna Sari
Rekayasa Sipil Vol 13, No 1 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.01.4

Abstract

Rainfall anomaly associated with severe drought or flood. The research objective is to identified rainfall anomaly for 1979 – 2017 over Lower Bengawan Solo and its characteristic when El Nino or La Nina occur. Monthly data of 16 stasiuns used to analyze rainfall anomaly related to El Nino and La Nina. At specific years, it is found that wet anomaly occured 50% station (1989, 1995, 1998, and 1999). These years co-occurence with strong La Nina. Dry anomaly found at 1991, 1997, and 2002 which co-occurence with strong or moderate El Nino.
SUBTITUSI PARSIAL AGREGAT HALUS DENGAN BOTTOM ASH PADA PEMBUATAN BATA SEMEN Mufti Amir Sultan; Imran Imran; Rofika Sakti
Rekayasa Sipil Vol 13, No 1 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.01.9

Abstract

The Tidore Islands Municipal Steam Power Plant uses coal as fuel to generate electricity. Handling of coal waste in the Rum PLTU is done by storing it on empty land so that it is not effective because it can be potentially dangerous for the environment and surrounding communities. Therefore, it is important to use coal waste. One of them is in the construction field such as in the manufacture of cement bricks.The purpose of this study is to determine the level of water absorption and compressive strength of cement brick using bottom ash base material. Water absorption testing is carried out when the specimen has been immersed for 28 days. The test object is weighed in the SSD state and then inserted into the oven and left for 24 hours. Then the test object is left idle and then weighed. Testing of compressive strength was carried out when the specimen was 28 days old.The results of the study show that the absorption rate of cement brick is increasing when bottom ash is added.Meanwhile, for compressive strength, the cement brick has decreased
COMPARATIVE ANALYSIS OF STEEL REINFORCED AND BAMBOO REINFORCED BEAMS Abdourahim Jallow; Sri Murni Dewi; Ari Wibowo
Rekayasa Sipil Vol 13, No 2 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.02.4

Abstract

This research will seek to compare bamboo reinforced concrete beams and steel reinforced concrete beams experimentally. Special emphasis will be laid on how both sets of beams respond to nominal moments. The main aim is to find out the applicability of bamboo reinforced concrete beams against steel reinforced concrete beams in developing countries wherein bamboo is easily available as compared to steel reinforcement bars. The behaviors in terms of crack patterns will be also discussed including their stress and strain behaviors as well under the same kind of loading and with the same loads applied.Two (2) sets of beams were designed to investigate three (3) parameters namely; compressive strength on concrete, longitudinal reinforcement and transverse reinforcement. All beam cross-sections were maintained throughout the experiment as well as cross-section areas of rebars in each case. The shapes of the rebars were different; round in the case of steel and rectangular in bamboo. All bamboo rebars were treated with Sikadur to improve their bond strengths.The steel reinforced beams were reinforced with 2f10mm for compression bar and 3f10mm and 6f10mmfor tension bars, which correspond to longitudinal reinforcement ratio of 0.42%, 0.63% and 1.26% respectively. Whereas, the bamboo reinforced bars(rebars) used 2 bars 8x8 mm (for compression bar) and two cases of 3 bars and 6 bars of 8×8 mm (for tension bars) corresponding to longitudinal reinforcement ratio of 0.34%, 0.51% and 1.02% respectively.The spacing of the stirrups (6mm steel bars) were 150mm and 300mm for each case. The beams were also investigated for the effect of strengths of concrete of 20MPa and 30MPa.

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