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Jurnal Rekayasa
Published by Universitas Lampung
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Articles 10 Documents
 1 
Search results for , issue "Vol 17, No 2 (2013): Edisi Agustus 2013" : 10 Documents clear
Analisis Perbandingan Model Respon Spektra Desain SNI 03-1726-2002, RSNI 2010 dan Metode PSHA Suyadi .
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Abstract

Seismic load rules for the building as outlined in the SNI 03-1726-2002 which divided Indonesianarea in the 6 (six) earthquake regions. It is different to that in RSNI 03-1726-xxxx, which dividedIndonesia area > 6 the seismic zone. In addition earthquake time period use 500 years, while theRSNI 03-1726-xxxx uses 475 years and 2475 years earthquake time period. In the arrangement ofPeak Ground Acceleration values (PGA) is also used different attenuation formula’s in bothstandard. That's why research needs to be done to it by taking locations is Kalibalok intersection(Bandar Lampung) and Way Robok (West Lampung) as objects. The study focused on the shape ofthe response spectra design, in consideration seismic load can be analyzed with dynamic analysismethods which one with the response spectra. For add to the model, it was also use the methodPSHA calculations PGA for both locations. Based on the SPT test data that has been carried outby PT. Plato Isoiki, it turns out the two locations including the classification in stiff soil profile.Refer to result of the response spectra shape’s in both locations is different. At the Kalibalokmaximum value of acceleration response spectra if the design is made according to the results ofPSHA calculations with one sigma models. Whereas for area Robok Way maximum accelerationvalue is obtained if the design response spectra are arranged according RSNI-03-1726-xxxx. Thisis because when the earthquake time period, the attenuation function and seismic zoning isdifferent.
Studi Daya Dukung Tanah Lempung Lunak yang Distabilisasi Menggunakan TX 300 Sebagai Lapisan Subgrade Muhammad Jafri; Iswan Iswan; Mirsa Susmarani
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Road construction requires good subgrade to put down parts of road pavement that it put downabove subgrade. However, soil can make problem if it has bad characteristic and loss, forexample high plasticity, low shear strenght, compression or volume change and large potensial ofswelling-shrinking. To overcome these, it is needed an improvement of soil that is called with soilstabilization use additive and one of them use TX 300 that come from America.Results of laboratory research show stabilization materials use TX 300 as stabilizing agent canimprove the physical and mechanical properties of soft clay soil. On physical test such as specificgravity and plasticity index, it decreased after stabilization. While the mechanical testing, usage ofTX 300 is effective enough in increasing the bearing capacity of soft clay soil. From the testresults of laboratory’s CBR, soil that has been stabilized with a mixture of the TX 300 can be usedas a subgrade for road construction due to CBR’s value ≥ 6 %.
Sedimen Prediktor dalam Analisa Debit Dominan Endro P Wahono
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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One of the most important variables involved in river-channel formation is the channel-formingdischarge, which is well known as Dominant Discharge. Since discharge-sediment relation withinriver morphology process is quite dynamic and rather difficult to predict, it will be helpful to havea kind of representative discharge from analytical point of view.This paper discusses on how exponent (n) of sediment predictor affect dominant discharge deriva-tion. Two sediment predictors were used on this paper namely Engelund Hansen (EH) and Meyer-Peter-Muller (MPM). The result shows that, after deriving equations, the dominant discharge (Q d)could be explained as a maximum distribution value of piQ n/3 representing combination parameterof both probability and sediment predictor. Dominant discharge was then calculated based onthose two predictors and compared with average discharge, frequent discharge as well as bankfulldischarge. The result presents that analytical approach using EH predictor provides closer valueto the bankfull discharge.
Sistem Informasi dan Analisis Data Curah Hujan Kota Bandar lampung Zakaria, Ahmad; Didik, Didik; Algifari, Habib
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Hydrological data especially rainfall data that observed, often not available, in the otherwords there are missing data. Unavailability of complete data becomes an important prob-lem for the next data processing. Lost data will reduce information that consist in data.There is no a media service access on collect rainfall data with easily and quickly becomes ahomework that must be completed. For help access and processing rainfall data, it's impor-tant to developed "Information systems and analysis daily rainfall data of bandar lampungcity". This system is purpose to provide data and handle rainfall data process.
Studi Kuat Tekan Tanah Pasir Berlempung yang Distabilisasi Menggunakan Abu Gunung Merapi Setyanto Setyanto; Andius Dasa Putra; Aditya Nugraha
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Abstract

The tested soil sample in this research is sandy clay soil. The variations of procentage are 5%,10%, 15%, and 20%. Each of samples are cured in 14 days. Based on the physical soil propertiesinvestigation, AASHTO classified the soil sample into A-2-6 group (sandy clay soil), while USCSclassified the soil sample as soil with rough granules into SC group.The results of the research in the laboratory showed that the additive material using Merapi vol -canic ash could improve the physical and mechanical properties of organic clay soil. In the physi-cal test such as unit weight and Atterberg limit tests, the values decreased after it, while the me-chanical test of Merapi ash sample showed it could improve the value of unconfined compressionstrength soil. Based on the result of unconfined compression stregth test, soil which is stabilizedusing the ash of Mount Merapi increase until the optimum ash content about 20%.
Kinerja Jembatan Rangka Baja yang Diperkuat dengan GFRP (Glass Fiber-Reinforced Polymer) Suyadi .; Eddy Purwanto; Ferry Taurus
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Analysis of the data in this study is focused on a comparison of the results of direct testingdeflection field with SAP 2000 analysis and manual calculation of loading field and standard(RSNI T-02-2005) with a maximum deflection limit bridge.Based on the results obtained by calculation of loading field: percentage reduction of deflectiontest results without the GFRP reinforcement compared to after given the GFRP reinforcement ondirect testing field, SAP 2000 analysis, and manual calculation respectively, they are obtained4.934 %, 0.7097%, and -0,6804 %. Based on the results of the calculation deflection of theloading standard: percentage reduction of deflection test results without the GFRP reinforcementcompared to after given the GFRP reinforcement on SAP 2000 analysis and manual calculationrespectively, they are obtained 2,0212 % and -0.17557 %. The Values of deflection are calculatedstill below 18.75 cm as deflection limit L/240.
Studi Sifat Fisik Tanah Organik yang Distabilisasi Menggunakan Cornice Adhesive Iswan .; Muhammad Jafri; Adi Lesmana
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Abstract

Analysis of the data in this study is focused on a comparison of the results of direct testingdeflection field with SAP 2000 analysis and manual calculation of loading field and standard(RSNI T-02-2005) with a maximum deflection limit bridge.Based on the results obtained by calculation of loading field: percentage reduction of deflectiontest results without the GFRP reinforcement compared to after given the GFRP reinforcement ondirect testing field, SAP 2000 analysis, and manual calculation respectively, they are obtained4.934 %, 0.7097%, and -0,6804 %. Based on the results of the calculation deflection of theloading standard: percentage reduction of deflection test results without the GFRP reinforcementcompared to after given the GFRP reinforcement on SAP 2000 analysis and manual calculationrespectively, they are obtained 2,0212 % and -0.17557 %. The Values of deflection are calculatedstill below 18.75 cm as deflection limit L/240.
Daftar Isi Jurnal Rekayasa Edisi Agustus 2013 Ahmad Zakaria
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Daftar Isi Jurnal Rekayasa Edisi Agustus 2013
Sampul Muka Jurnal Rekayasa Edisi Agustus 2013 Ahmad Zakaria
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Sampul Muka Jurnal Rekayasa Edisi Agustus 2013
Cover Belakang Jurnal Rekayasa Edisi Agustus 2013 Zakaria, Ahmad
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 17, No 2 (2013): Edisi Agustus 2013
Publisher : UNIVERSITAS LAMPUNG

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Cover Belakang Jurnal Rekayasa Edisi Agustus 2013

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