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MEDIA KOMUNIKASI TEKNIK SIPIL

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Published by Universitas Diponegoro

ISSN : 08541809 EISSN : 25496778 DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

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 isnâ€™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.

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Articles 9 Documents

Search results for , issue "Volume 23, Nomor 2, DESEMBER 2017" : 9 Documents clear

Penerapan Zero Runoff System (ZROS) dan Efektivitas Penurunan Limpasan Permukaan Pada Lahan Miring di DAS Cidanau, Banten Wirasembada, Yanuar Chandra; Setiawan, Budi Indra; Saptomo, Satyanto Krido
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

Runoff is one of flood and erosion causal factor in Indonesia. Runoff occurred when rainfall cannot be infiltrated and flowed on the ground surface. Cidanau watershed has quite high rainfall average (2573 mm/year) so it has high runoff potential. Zero Runoff System (ZROS) is one of water conservation way which can infiltrate runoff to the ground using permeation structures. ZROSâ€™s successful parameter in order to decreasing runoff rate can be observed by the soil water content differences before and after ZROS application. Soil water content estimation was conducted by water balance model with and without runoff and then it is compared with soil water content from measuring. The simulation results indicated that soil water content in the research field before and after ZROS application is 0.476 and 0.569 m3/m3 respectively. The simulation is also conducted for past 10 years (2004-2013) and resulted higher soil water content if ZROS were applied. This results indicates that ZROS capable to decrease and permeate runoff to the ground and then increase soil water content level. Water balance model with and without runoff has coefficient of determination (R2) 0.606. It means that this model could simulate the soil water content differences before and after ZROS application valid relatively.

The Mechanics Properties of Self-Compacting Concrete Using Red-Tile Waste as Substitution of Fine Aggregates Octobenita, Crezensia Alfiora Deadema Dias; Lisantono, Ade
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

This paper presents the experimental program about the mechanics properties of Self-Compacting Concrete (SCC) using red-tile waste as substitution of fine aggregates. The proportion of red-tile waste substitution was 10 %; 20 %; 30; 40 %; and 50 % of fine aggregates by weight. Viscocrete-10 was used to maintain the workability and flowability of SCC. 72 cylinder specimens with the size of (150Ã—300) mm and 18 beam specimens with the size of (100Ã—100Ã—500) mm were cast and tested in this study. The mechanics properties of SCC that were studied in this research were compressive strength, modulus of elasticity, and modulus of rupture. The compressive strength of SCC was tested at age 7; 14; and 28 days. While the modulus of elasticity and modulus of rupture of SCC were tested only at age 28 days. The result shows that the maximum compressive strength of SCC was obtained using red-tile waste with the proportion of 50 % as substitution of fine aggregates. The compressive strength of SCC using red-tile with the proportion of 50 % at age 7; 14; and 28 days were 64.746 MPa;, 65.564 MPa; and 71.940 MPa, respectively. While the maximum modulus of elasticity and modulus of rupture of SCC were obtained using red-tile with the proportion 50 % at age 28 days, and the modulus elasticity and modulus of rupture were 25863.192 MPa and 7.076 MPa, respectively.

Implementasi Manajemen Risiko Sistem Kesehatan, Keselamatan Kerja dan Lingkungan (K3L) pada Pembangunan Flyover Pegangsaan 2 Kelapa Gading Jakarta Utara Hakim, Arif Rahman
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

On construction of Flyover Pegangsaan 2 Kelapa Gading Jakarta Utara until March 2016 there are 4 accidents. Therefore, the health, safety and environment management systemâ€™s applied to the implementation of construction works, thus minimizing the occurrence of occupational accidents and identify the risks from the highest to the lowest. Research methode is explaining variable and processing data at risk identification stage and risk analysis. The results obtained from the results of questionnaire given to 10 certified respondents and enrolled in A2K4 Indonesia and have experience at least 5 years in construction flyover. Assessment method using risk matrix sourced from AS/NZS 4360: 2004. The result of questionnaires is processed with risk index, the resultâ€™s that workers fall from height in reinforcment, formwork and parapet work get the biggest result with scale 13,8 and at The lowest rank is risk workers exposed to respiratory disorders due to the compressor on roadsign works with scale 5.5. In the risk matrix analysis there are 3 jobs that are categorized as high risk include worker falls from height at reinforcement, formwork and parapet, full electric shock on electrical installation work, and materials falls from a height and hit the worker in erection work.

Korelasi Klasifikasi Penutup Lahan dengan Debit Puncak di Daerah Aliran Sungai Sachro, Sri Sangkawati; Edhisono, Sutarto; Atmodjo, Pranoto Samto; Prasetyo, Wahyu
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

Many studies have shown that land use changes in watersheds such as forests that convert to settlements, industrial and estates, have an impact on flooding. So it is important to know the correlation between the various land use changes to the discharge within a watershed. This study is a preliminary study in an attempt to assess the correlation between land cover index and peak discharge, with case studies in the Beringin River Basin.The peak discharge with the return period of 2, 5, 10, 20, 50 and 100 years are computed with HEC-HMS software, developed by Hydrologic Engineering Centre (HEC) and US Army Corps of Engineers which computes the runoff discharge from the precipitation. As for land covered index (LCI), it is defined as the sum of the land-use index (LUI). The result of the case study shows the strong correlation between the land covered index with the the runoff discharge with such relation : Q100 = -22.42LCI2 + 214.30LCI - 10.62, Q50 = -18.33LCI2 + 181.87LCI - 20.19, Q20 = -14.30LCI2 + 145.27LCI - 15.61, Q10 = -11.36LCI2 + 118.41LCI - 12.29, Q5 = -8.42LCI2 + 91.27LCI - 8.9 and Q2 = -4.44LCI2 + 53.54LCI - 4.5.

Pengaruh Kadar Air Awal Dan Surcharge Pressure Pada Uji Karakteristik Pengembangan Tanah Ekspansif Diana, Wilis; Hartono, Edi; Widianti, Anita
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

Expansive soils experience volumetric changes due to water content changes. These volumetric changes cause swell and shrink movement in soils, which in turn will inflict severe damage to structures built above them. A Proper understanding of how the expansive soil behaves during the wetting/drying process is essential for assessing the mitigation action of expansive soil hazard and design suitable foundation. The structures that build above expansive soil bed are susceptible to heave and to withstand swell pressure, thus the swell pressure must be considered in the design. This study focuses on swelling properties of two expansive clay from Ngawi, East Java and Wates, Yogyakarta. Laboratory test on disturbed samples is used to identified and to measured swelling properties. A series of swelling test was performed under constant soil dry density. The influence of initial water content and surcharge pressure on swelling properties (i.e swell percent and swell pressure) of compacted samples were investigated. The swelling properties test used ASTM standard 4546-03 method B. It was found that the lower initial water content the higher the swell percent, but the swell pressure seems not to be affected by initial water content. At the same initial water content, swell percent decrease with the increase of surcharge pressure, but swell pressure remains unchanged.

Pengaruh Rendaman pada Indirect Tensile Strength Campuran AC-BC dengan Limbah Plastik sebagai Agregat Pengganti Tajudin, Anissa Noor; Suparma, Latif Budi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

The pavement vulnerability of moisture and the risk of environment quality depression caused by plastic waste became the main reason of the effort to increase pavement strength with the use of plastic waste. This study was conducted to understand moisture effect to the fatigue risk with Indirect Tensile Strength (ITS) of AC-BC Hotmix with the use of plastic waste as aggregate substitution. The variance of plastic waste used are 0%, 25%, and 50% of aggregate volume passing sieve No. 4 and retaining on sieve No. 8. The test was conducted with the immersion time of 30 minutes, 1 day, 2 days, 4 days, and 7 days. The result of ITS test showed that longer immersion time will make Tensile Strength Ratio (TSR) become lower. TSR values of 0% plastic waste at the immersion time of 30 minutes, 1 day, 2 days, 4 days, and 7 days respectively are 100%; 79,13%; 62,18%; 54,19%; and 44,25%. For 25% plastic waste are 100%,Â 82,12%, 66,68%, 64,03%, and 56,91%. And for the 50% plastic waste are 100%, 96,21%, 84,34%, 80,53%, and 76,21%.

Perilaku Geser Tanah yang Distabilisasi dengan Abu Ampas Tebu-Semen dan Inklusi Serat Polyester Hatmoko, John Tri; Suryadharma, Hendra
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

Bagasse ash is a fine residue collected from the burning of bagasse in sugar factory, and it behaves as pozzolanic materials. In addition, engineering behaviour of bagasse ash can be improved by addition of cement containing high calcium. Recently, research about cement stabilized soil is continuously in progress. In this paper, a set of experiment programs were done to investigate the randomly oriented polyester fibreÂ inclusion in bagasse ash-cement stabilized soil.Â Bagasse ash was mixed with clay in different proportions. To get the optimum curing period,Â it was done light compaction test of soil with 8% cement cured with 7, 14, 21, 28 and 36 days curing period,Â that was found on 28 days. The next experiment was compaction test on soil + 8% cement + 3,6,9 and 12% bagasse ash to obtain optimum bagasse ash proportion. The result indicated that optimum bagasse ash content was 9%. To ensure this result, unconfined compression test was done on the same sample. Finally, light compaction, unconfined compression and direct shear tests were done on : soil + 8% cement + 9% bagasse ash +Â polyester fibre with 28 days curing period. The results showed that maximum dry density and optimum moisture content was not influenced by fibre inclusion, whereas the increase of shear strength of stabilized soil with fibre inclusionÂ was mainly due to improvement of internal friction angle. In unconfined compression test, the unconfined compression strength of stabilized soil was significantly improved by fibre inclusion.

Analisis Banjir dan Perencanaan Desain Transportasi Sungai di Kota Bojonegoro Prastica, Rian Mantasa Salve; Maitri, Caya; Nugroho, Pratomo Cahyo; Hermawan, Ade
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

One of the worst problem in Bojonegoro is flood. This research aims to know the factor that could become the factor of flood in Bojonegoro. Besides that, this research analyses the planning of transportation river design in Bojonegoro. Flood discharge analysis uses Nakayasu synthesis unit hydrograph for period of 5 years, 10 years, 25 years, 50 years, and 100 years, then they would be compared to the water maximum capacity that could be loaded by the river. According to the analysis result, Bengawan Solo River in Bojonegoro could not able to load flood discharge from Nakayasu synthesis unit hydrograph analysis for all periods. The result conclusion that captured by HEC-RAS application has the same idea. It shows flood water surface is more than full bank capacity elevation. For river transportation design planning, according to analysis of parameter of depth, width for one and two lanes, turning basin and its depth, the ship design that recommended to ship in the Bengawan Solo River in Bojonegoro are cargo ship and passenger ship with draft of 0.6 m and LOA of 18 m, or the capacity of a passenger ship is 70 people.

Evaluasi Kesehatan Struktur Bangunan berdasarkan Respon Dinamik Berbasiskan Data Akselerometer Darmawan, Wan Fikri; Suryanita, Reni; Djauhari, Zulfikar
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

The aim of the research is to analysis the health of a simple frame structure based on accelerometer data. The research is a preliminary study which used the accelerometer data in the time history analysis of the structure. The parameters has been used in the study are the Story Damage Index (SDI), the ApproximateStory Damage Index (ASDI), the Flexibility Damage Index (MFDI), and the Park Ang Damage Index. The finite element analysis is used to identify the damage of building structures through the pushover analysis. The study has conducted the minor damage index, physical appearance to check the cracked beam andconcrete column. The damage index average is in the range 0-0.08. It can be concluded the building is still able to withstand the earthquake load. However, the building is stated in a minor damage condition after the earthquake occurred.

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