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Jurnal Spektran

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Published by Universitas Udayana

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Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

Jurnal Spektran merupakan berkala ilmah online yang dikelola oleh Program Magister Teknik Sipil, Program Pascasarjana Universitas Udayana. Terbit pertama kali pada bulan Januari 2013 dan selanjutnya diterbitkan 2 kali setahun setiap bulan Januari dan Juli. Jurnal Spektran mempublikasikan hasil penelitian dan kajian dari mahasiswa, akademisi, praktisi dan pengamat masalah ketekniksipilan.

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Articles 6 Documents

Search results for , issue "Vol 1, No 1, Januari 2013" : 6 Documents clear

EVALUASI RENCANA KINERJA KOLAM RETENSI (RETARDING BASIN) DALAM UPAYA PENGENDALIAN BANJIR TUKAD MATI DI KOTA DENPASAR I G. Suryadinata P; I N. Norken; I G. B. Sila Dharma
JURNAL SPEKTRAN Vol 1, No 1, Januari 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Tukad Mati is one of the rivers in the province of Bali that unfolds and flows in Badung regency and Denpasar. Inundation due to flooding is a problem that often occurs in this region during the rainy season. In an effort to overcome problems of flooding have been many studies carried out so as to produce flood control alternatives such as normalization, diversion channels and retarding basins. Retarding basin is one of flood control alternative that has not been much studied. In this study conducted a simulation of flood prevention alternative with retarding basin at Tukad Mati, by the hydrology approach method and hydraulics using HEC-RAS 4.0 program applications. Simulations performed on the current river flow conditions (existing condition) and to the existing conditions with the retarding basin, according to the detail design of retarding basin in the city of Denpasar and evaluate the effectiveness of the retarding basin in the river basin flood control of Tukad Mati. Flood control by retarding basin based on simulations with the 2 (two) years flood return period, resulting in a reduction of water level by an average of 0.42 meters or an average of 12% of the maximum water level in the conditions without retarding basin, which occurred in along the grooves on the lower reaches of the retarding basin and inundation waters still occur in some places, particularly in the downstream of Umadui Dam. Economic analysis of both the analysis of Benefits/Cost produces a parameter of BCR, NPV and IRR are not meet the feasibility requirements. The effective retention of retarding basin based on simulation results are 282,630.00 m3 with the ability to flood accommodate for 3-4 hours. In terms of economic development retarding basin is not feasible in terms of comparative costs and benefits

PARTISIPASI MASYARAKAT PEMAKAI AIR DALAM OPERASI DAN PEMELIHARAAN EMBUNG DI KABUPATEN KARANGASEM I G. Oka Wiradnyana; I N. Norken; I G. B. Sila Dharma
JURNAL SPEKTRAN Vol 1, No 1, Januari 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Karangasem regency is one area of dry areas in the province of Bali. This area has limited surface water resources in some area, and the rivers are partly a intermittent, which there is no water in the dry season, so as to meet the needs of raw water is very difficult. One alternative to overcome this, the government has built the small reservoir, called the Embung. In order to meet the embung system sustainable, the participation of water users in the operation and maintenance of Embung is required. This research aims to determine the influence of human resources (HR) factors, funding, ideas and effort, and organization in the operation and maintenance of Embung. Number of samples obtained in these research as many as 290 respondents is calculated by Slovin theory formulation of the total 1.045 family heads of water user population. Community participation is measured statistically using the independent variables, namely human resources (X1), funding (X2), ideas and effort (X3), organization (X4), as well as the operation and maintenance of embung as the dependent variable (Y). Data results of the questionnaire, scored into a Likert scale, further processing was carried out by multiple linear regression analysis. using statistical software Statistical Package for Social Science (SPSS) version 19. The results showed that there is participation of water user in the operation and maintenance of embung in the regency of Karangasem, which can be shown from the resulting regression equation model, where all the regression coefficients of each variable are positive. Independen variables also have a significant influence on the dependent variable, with Fhitung (= 2316,926) > Ftabel (= 1,96). While the most dominant variable effects on the operation and maintenance of embung is organization's variable, with the ? value of 0.382, followed by ideas and effort variable (? = 0.329), proceeded by funding (? = 0.302), and the lowest is the human resources (HR) variable (for ? = 0.283)

KINERJA SISTEM JARINGAN DRAINASE KOTA SEMARAPURA DI KABUPATEN KLUNGKUNG Irma Suryanti; I N. Norken; I G. B. Sila Dharma
JURNAL SPEKTRAN Vol 1, No 1, Januari 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Urban drainage is one of basic facilities and infrastructure of a town which is cincidered quite important. Agood city needs to consider the condition of the drainage system, because if a settlement is flooded, it will greatly impact the lives of the city. Buildings will be easily damage, environments will be unhealthy and settlements will turn into slumps. The case of flooding is not only in big cities but also emerged in the town of Semarapura that extents only, 5,151 km2. From the conditions on ground, puddles can still be found in some locations, so based on the fact it is necessary to issue reviewing Semarapura drainage system to improve the drainage system in the region. The study in this research has the sense of a systematic search of the drainage problems from an investigation in order to get treatment effort. The approach applied in this research was exploratory and descriptive analytical approach. Data were collected through questionnaires an in-depth interviewers with selected agencies using purposive sampling method. Data analysis was perfomed by descriptive qualitative using likert scale to measure the attidudes, opinions and perceptions of tge performance of the drainage system. The analysis was performed with the aids of SPSS version 20.0, through several stage of the test process to the data sample. The result of the study showed that the influence of the level of maintenance operation, technical management and overall was high at 93,5% with the regression equation Y = -4.874 + 0.405 X1 + 0.228 X2 + 0.089 X3 and the remaining 6.5% was influenced by other factors. From the equation it can be seen that the maintenance operations were more dominantly affected on the performance of the drainage system in Semarapura town District of klungkung compared with management and technical. The effort carried out to increase performance system of Semarapura town drainage network is to construct a structured system of maintenance operations so that it can be performed on a regular basic, establish drainage management institutions that it’s authority and responsibility can be coordinated as directed an make clear rules of management system, make repairs damage drainage infrastructure in accordance with the technical requirement.

PENGGUNAAN SERBUK BATU TABAS SEBAGAI PENGGANTI SEBAGIAN SEMEN DALAM PEMBUATAN BETON I W. Intara; I M. Alit K. Salain; N. M. Anom Wiryasa
JURNAL SPEKTRAN Vol 1, No 1, Januari 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Research on the use of stone dust (SDT) as a partial replacement of Ordinary Portland Cement (OPC) has been carried out by using cylindrical concrete specimens with Ø = 150 mm and h = 300 mm. Specimens were made by using the ratio, in weight, of cementitious material : sand : crushed stone of 1.00 : 1.93 : 2.67. The water cementitious material ratio is of 0.52. The cementitious material is a mixture of OPC and SDT. The percentage of OPC replacement by SDT varied from 0%-25%. The distribution of grains of sand and crushed stone are designed according to SNI 03-2384-2000: gradation zone 2 for fine aggregate and gradation with a maximum diameter of 20 mm for coarse aggregate. The tests of compressive strength, elastic modulus, tensile strength and permeability on the cylindrical specimens were realized at 28 and 56 days. The result indicates that SDT shows a good pozzolanic reactivity in terms of compressive strength, elastic modulus, tensile strength and permeability. Therefore, it can be used as a component of Portland Cement Composite. The development of compressive strength, elastic modulus, tensile strength and permeability of concrete produced with a mixture of OPC and SDT depends on the amount of SDT used in the mixture and hydration time. The pozzolanic effect of SDT can only be seen at the age of 56 days. The optimal use of SDT as a partial replacement of OPC in concrete applications varied from 5%-10%.

ANALISIS KUALITAS PELAYANAN PAS BANDARA INTERNASIONAL NGURAH RAI DENGAN MENGGUNAKAN MODEL SERVQUAL I Made Suska V; N. Budiartha R. M.; Gd. Astawa Diputra
JURNAL SPEKTRAN Vol 1, No 1, Januari 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Permit to a person to enter the restricted area at Ngurah Rai Airport which is called Airport Pas can be given in accordance with the duties and activities of a person at the airport. On permit service, there are disappointments and complaints of the Pas applicant that can still be found in the Pas service like duration of Pas completion and officer service at the time of application. The different perception and expectation of Pas applicant must remain in the regulation corridors and prioritize security at airports. The purpose of this research is assesing the quality of Pas service in the Airport Authority Region IV by using a SERVQUAL (Service Quality) model. The model is comparing the two main factors, namely real customer perception of the service that they received (Perceived Service) with the actual services expected/desirable (Expected Service) which consists of 5 (five) dimensions, those are Tangibles (physical), Reliability, Responsiveness, Assurance and Empathy (attention). By using these models, it is known that the quality of Pas service in the Airport Authority Region IV is still less than the expectations of the applicant and the most important dimension to enhance is Responsiveness. Gaps between perception and expectation as follows: Responsiveness (-0,2240), Assurance (-0,2171), Reliability (-0,2099), Tangibles (-0,1994), dan Empathy (-0,1373).

ANALISIS KELAYAKAN FINANSIAL PENGOPERASIAN ANGKUTAN ANTAR JEMPUT SISWA SEKOLAH PADA KORIDOR JALAN GUNUNG AGUNG DENPASAR D. A. Nyoman Sriastuti; I G. Putu Suparsa; D. M. Priyantha Wedagama
JURNAL SPEKTRAN Vol 1, No 1, Januari 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

The population increase in Denpasar City causes the increase of peoples’ activities which is followed by the increase of using transportation facilities. It certainly influences the traffic in the city itself. One of the peoples’ activities causing traffic jams on the streets of Denpasar particularly on Gunung Agung Street is the students’ pick-up service. The jam is mainly caused by the use of private vehicles especially motorcycles for picking-up the students. The problem can be overcome with pick up service so that the use of private vehicles can be minimized. Some advantages can be gained from the pick-up service; it can be done door to door in accordance with the students’ schedules and it can help the parents who are in troubles in bringing and picking-up their children to schools. A planning and an evaluation on aspects of financial investment feasibility towards the students’ pick-up service are needed in order to match both the interests of service providers and the customers. This research used field survey method completed with interview method. The interview method was applied to gain primary data from related parties and from related institutions for the secondary data. Tariff calculation analysis based on the vehicle operational cost (VOC) used a method of Transportation Department, and the Ability to Pay (ATP) tariff and Willing to Pay (WTF) tariff were determined based on respondents’ income and their perceptions toward a tariff they expected. The result of the research shows that the ATP tariff for both routes is higher than WTF tariff; on route I the ATP is Rp. 569,76 per kilometer- passenger (Rp. 4,273 per passenger) and the WTP tariff is Rp. 499,67 per kilometer-passenger (Rp. 3,748 per passenger), on route II the ATP tariff is Rp. 594,46 per kilometer-passenger (Rp. 3,864 per passenger) and the WTP tarrif is Rp. 554,56 per kilometer-passenger (Rp. 3,605 per passenger). Based on the estimation of the passengers, there are 97 vehicles estimated for route I and 38 for route II. Based on the tariff analysis, it can be recommended that tariff based on VOC + 15% margins is Rp. 797,47 per kilometer-passenger (Rp. 5,981 per passenger) for route I and Rp. 1,645,08 per kilometer-passanger (Rp. 10,693 per passenger) for route II. The financial evaluation analysis shows that the three criteria such as Net Future Value, Benefit Cost ration, and Internal Rate of Return for route I and route II are not feasible to be operated if they are operated both by personal and corporation agents.

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