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Teknisia
Published by Universitas Islam Indonesia
ISSN : 08538557     EISSN : 27460185     DOI : 10.20885/teknisia
Core Subject : Engineering,
Engineering
Jurnal Teknisia terbit pertama kali pada bulan April 1996. Pada awal berdirinya, Jurnal Teknisia merupakan jurnal ilmiah berkala yang diterbitkan tiga kali setahun oleh Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia, Daerah Istimewa Yogyakarta yang berisi artikel-artikel bidang teknik sipil, teknik lingkungan, dan arsitektur.
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Articles 9 Documents
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Search results for , issue "Vol. XX, No. 2, November 2015" : 9 Documents clear
Cover, Susunan Dewan Redaksi, daftar Isi, dan Petunjuk Penulisan Dewan Redaksi
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

Cover, Susunan Dewan Redaksi, daftar Isi, dan Petunjuk Penulisan
PENGARUH PENGGUNAAN CETAKAN SPASI TERHADAP KEBUTUHAN BAHAN PADA PEKERJAAN PASANGAN BATA Albani Musyafa
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

For construction of million houses needed by Indonesians, material efficiency should be prioritized. This is because so many wasted materials in the process. For example, much mortar is wested on a masonry work. To minimize the waste, a mortar mold should be used. The objective of this study was to determine the efficiency that could be got by using a mortar mold in a masonry work. The reseach method was experiments. The result was determined by comparing the mortar needs between the two ways, i.e. with and without the masonry mold tool. Twenty-one experiments have been conducted for each way. The results of this study indicate that using of the tool could save about 23% of mortar or 23% of the material cost.
PENERAPAN KONSEP ECO-SETTLEMENT PADA SARANA PRASARANA INFRASTRUKTUR PENDUKUNG PERMUKIMAN HUNTAP (STUDI KASUS : HUNTAP PAGERJURANG DAN HUNTAP KARANGKENDAL KECAMATAN CANGKRINGAN) Hanindya Kusuma Artati; Albani Musyafa
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

Eco-settlement infrastructure planning is a concept that puts the balance of the ecosystem at a settlement. This concept is urged to apply to residential areas, especially in the area of the catchment. Huntap as a settlement area also need to apply the concept of eco-settlement. After the eruption of Merapi, Huntap development is mostly done in the area of Cangkringan which is the catchment area that supplies water in the city of Jogjakarta. The purpose of this study was to report the results of the application of eco-settlement planning on huntap in Cangkringan area. The method used in this research are: 1) Identification of the condition of settlement infrastructure that had been built 2) comparative analysis of results of this identification with the concept of eco-settlement, 3) to formulate the results of the analysis. From the analysis, we can conclude that the development of infrastructure in the dwelling in accordance with the concept of eco-settlement.
PENYEDERHANAAN RUMUS DEBIT ALIRAN LEWAT LUBANG BESAR Munadhir Munadhir
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Theory of flow discharge through large orifice on wall is obtained by integration of small orifice equation dQ on flow column dA. The flow equation obtained from integration process contains fractional exponent number, moreover the obtained equation is not simple for practical purpose. The application of the obtained equation can raise an error. This research presents practical discharge concept as a result of multiplication of orifice broad (A) and flow velocity (V) at the centre of orifice. Application of practical discharge equation on rectange orifice, triangle orifice, trapezoidal orifice, and circle orifice show maximum error presentation less than 5% toward theoretical discharge.
KAJIAN LEBAR RETAK BALOK BETON AKIBAT PENGGUNAAN TULANGAN ALUMINIUM PADUAN Novi Rahmayanti; Iman Satyarno
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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The use of concrete structures in a corrosive environment requires a minimum concrete cover thickness of 50 mm.Tthick concrete cover is certainly very risky occurrence of spalling which result in reduced capacity of the cross section of the structure. For this study utilizes the aluminum alloy material as additional reinforcement bars that fill a third of thick concrete cover, where the aluminum has properties that are resistant to corrosion. The purpose of this study to obtain the contribution of aluminum alloy in the capacity of the concrete beam section and a wide crack that occurs without using reinforcement rebars. This study uses five pieces of beam specimen dimensions of 300 mm x 150 mm and a span length of 1600 mm. The beam using materials mortar, concrete and 13 mm diameters of aluminum alloy that were tested for bending strength. As for each of the aluminum ratio of 0% (B0); 0.34% (B1); 0.68% (B2); 1.02% (B3) and 1.36% (B4). Testing method requiring a single point of loading. The results showed that the load capacity of the test specimen when the first crack in the beam but not significantly increased with increasing amount of aluminum, which is equal to 1 times, 1,002 times, 1.01 times, 1.03 times and 1.07 times the beam ratio aluminum 0%. The maximum load capacity has increased along with increasing the number of aluminum, which is equal to 1 times, 1.64 times, 2.95 times, 4.00 times and 5.17 times its maximum capacity aluminum beam ratio of 0%. Rated maximum bending stress concrete (FCR) are eligible crack width 0.4 mm when conditions permit loading is an aluminum beam with a ratio of 0.68%; 1.02%; 1.36% 3.81 MPa; 3.89 MPa; 4.02 MPa.
PERILAKU LENTUR PERBAIKAN BALOK BETON BERTULANG DENGAN VARIASI LEBAR CARBON FIBRE REINFORCED POLYMER Atika Ulfah Jamal; Helmy Akbar Bale; Iqbal Haqiqi
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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The retrofitting of reinforced concrete structural elements required in case of material degradation which results in decreased strength, stiffness, stability and resistance to environmental conditions. One material that can be used to retrofit concrete structures is the Carbon Fibre Reinforced Polymer (CFRP). Experimental research must be done toward the influence of CFRP width variations to retrofit reinforced concrete beam flexural capacity after damage. The specimen used for this research is a beam with 15x20x120 cm3 dimension. There were three beams used and divided into two groups, Control Beam (BK) and Carbon Beam (BC). These three beams were given a load until the first crack then had to retrofit with CFRP, and was given a load again upon the beams finally fallout and  the result of maximal load that able to be supported by the beam is obtained.  The research result shows that there is the significant increase in the beam flexural strength. The wider CFRP used for retrofitting, the greater beam flexural capacity increases. CFRP uses as retrofitting material in the beam bending area also able to prevent a new crack in the bending area.
IDENTIFIKASI POTENSI PLTMH DI DESA MONGIILO PROVINSI GORONTALO Komang Arya Utama
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

Mongiilo is a village that has a very poor service in electricity supply. However, this village has Butaiyo Kiki River that flows throughout the year that can be used to supply additional power to the community. This research aims to determine the potential of PLTMH from Butaiyo Kiki River in order to solve the problems of electric energy in the village Mongiilo. The method used are observation and measurement directly in the field; determine the dependable discharge by using FJ Mock formula; and analysis of intake infrastructure according to the manual book of  the Directorate General of Irrigation Department of Public Works. The result of this research shows that the average dependable discharge of Q90 obtained at 0.60 m3/sec. Based on conditions on the field site, the height of potential head which is 13.23 m which will generate power of 48,798 Watts. The number of homes receiving electrical power supply with a minimum requirement of electricity per home of 450 watts is 108 Houses. As for the design of building power plants is obtained; weir crest height is 2.5 m, intake geometry are 1 m of  width and 0.5 m of height. Headrace is a rectangle with a height of 1.3 m, a width of 1 m, stilling basin with a width of 1.5 m, length 16 m and height of 2.1 m, sand trap with 0.691 m high and 0.5 m wide with a slope 3.6%; forebay is 6 m long, 3 m wide, height is 2.5 m.
ANALISIS HAZARD GEMPA DKI JAKARTA METODE PROBABILISTIK DENGAN PEMODELAN SUMBER GEMPA 3 DIMENSI Yunalia Muntafi; Widodo Pawirodikromo; Lalu Makrup
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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History records that Jakarta as the capital of Indonesia ever rocked by a devastating earthquake in 1699, 1780, 1883 and 1903, resulting in loss of physical, mental and material. The existence of several active faults around Jakarta potentially be the source of the earthquake that shook Jakarta. Therefore, the analysis of seismic hazard for Jakarta area is needed. The study was conducted by the method of Probabilistic Seismic Hazard Analysis (PSHA) with 3D modeling of seismic source and latest attenuation equations (Next Generation Attenuation) in accordance with the method used in the manufacture of the latest earthquake map (Earthquake Hazard Map of Indonesia 2010). The aims of this research are to (1) conduct hazard analysis seismic probabilistic as a reference value of the intensity of the hazard seismicity, (2) analyze deagragasi as early determinant of modification recording time history seismic acceleration corresponding to Jakarta bedrock and (3) analyze the spectral matching which then carried the ground motion design for Jakarta. The results of seismic hazard analysis shows that maximum acceleration at bedrock (PGA) for the Jakarta area with 500-year return period amounted to 0.236 g still in the range of PGA Jakarta by Indonesian Earthquake Hazard Map of latest ISO 1726-2012 (0.20g-0.25g). This value is close to the value of the Hutapea’s research results (2009), amounting to 0.239g. However, it is higher than the proposed PGA of Irsyam et al (2008) which amounted to 0.20g, and lower than the value of PGA on Indonesian earthquake map published by the USGS in which Jakarta was in the range of 0.245g - 0.326g. Based on the deagregation analysis, obtained two sets of real-time earthquake data, namely time history of Kocaeli earthquake in 1999 and Landers earthquake in 1992 to present megathrust and shallow crustal earthquake source, then by spectral matching analysis, obtained two synthetic ground motions for each seismic source mechanisms in the period of 0.2 sec and 1.0 sec for Jakarta.
PERBANDINGAN PERANCANGAN SUMUR RESAPAN AIR HUJAN MENGGUNAKAN METODE SUNJOTO DAN SNI 03-2453-2002 PADA BANGUNAN KOMERSIAL DI JALAN KALIURANG KM 12 SLEMAN JOGJAKARTA Rifky Adhi Prasojo; Sri Amini Yuni Astuti
TEKNISIA Vol. XX, No. 2, November 2015
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Imbalance between suction and recharging of groundwater in Kampus Terpadu UII Yogyakarta triggers declined of free water level. The phenomenon can interfere ecosystem balance. Recharging wells are needed to maintain groundwater balance in the surrounding area of Kampus Terpadu UII.Infiltration data as primary data was obtained by using infiltrometer ring. Rainfall data as long as 10 years from narrow rainfall station was used to calculate 5-year return period of rainfall intensity. Both data was used to design recharging wall by using equation presented by Sunjoto method and SNI 03-2453-2002 method.The research results showed that the constant infiltration rate was 0,000017-0,000127 m/second. Circle recharging wells were selected for comparison of both methods effectiveness to collect rainfall run off. Diameter of recharging wall was 1 m, and well depth was 2,5 m. Analyses results showed that number of recharging well designed by using SNI 03-2453-2002 method was more than recharging well designed by using Sunjoto method. Utilization of recharging well can be used to maintain groundwater level. The recharging well can collect rainfall run off more than 98%.

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