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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 252 Documents

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STUDI KARAKTERISTIK CAMPURAN HRS-WC DENGAN AGREGAT DILAPISI PLASTIK TIPIS BEKAS I Nyoman Arya Thanaya; I Made Agus Ariawan; Anak Agung Istri Mirah Primaswari
JURNAL SPEKTRAN Vol 7 No 2 (2019): Vol. 7 No. 2, JULI 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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ABSTRACTOne problem of the environment is the increasing amount of plastic waste especially thin plastic bag and other thin plastic packaging, therefore effort is needed to utilize those plastic waste. Within this experiment thin plastic waste was use on the production of road asphalt mixture. The aim of this experiment was: to know the effectivity of the plastic coating onto the aggregate; the properties of the aggregate coated with thin waste plastic; and the Marshall characteristic of HRS-WC. Waste thin plastic waste was manually cut with size: <10mm and 10-20mm. The aggregate was heated, then plastic waste was spreaded, mixed, added with optimum asphalt content (OAC), evenly mixed and compacted 2x75 Marshall blow. Plastic coating was found only effective (observed visually) on the coarse aggregate using wider plastic size 10-20mm. Samples of HRS-WC were made with aggregate coated with plastic at OAC; OAC-0.5%; and OAC-1%. It was obtained that: the OAC was 7.55%. For 100% coating the coarse aggregate the amount of plastic needed was 30gram (8.6% by weight of total aggregate), and 15gram to coat 50%. The difference on Marshall Characteristic without and with added plastic was not significant and difficulties was experienced to meet volumetric properties, nontheles there was increase in Marshall stability. It was found that, the Marshall stability, flow, Marshall Quotient, VIM, VMA, and VFB on OAC with 50% plastic coating on the coarse aggregate, were consecutively: 1017.35 kg; 3.05mm; 333.69 kg/mm; 298.94 kg/mm; 4.288%; and 18.055%. Meanwhile on 100% coating, consecutively: 1075.07 kg; 3.59mm; 298.94 kg/mm; 4.037%; 17.462%; dan 76.90%.

ANALISIS KEAMANAN LERENG BENDUNGAN UTAMA PADA BENDUNGAN BENEL DI KABUPATEN JEMBRANA I G. N. Putu Dharmayasa; I W. Redana; Tjok Gde Suwarsa Putra
JURNAL SPEKTRAN Vol. 2, No.2, Juli 2014
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Development of dam very important for community surrounding the dam. To maintain that the benefits can be continued, it is necessary to review whether the safety of dams already meet the expected requirements. Dam safety to be reviewed when the dam was built and when the dam operating at this time. Security conditions associated with changes in water level on the upstream dam that affects the seepage on the body of dam and seepage under the dam. The water level also affects the slope of the dam when the dam has been operating. Evaluation of the safety of the dam was conducted on Benel dam which located in Melaya District, Jembrana Regency, Bali Province. The results of the calculation of seepage (q) in the dam body with SEEP/W and flownet shows that, seepage discharge (q) which passes through under the dam and the body of dam is less than 1% (4.9206 m3/second) against the average flood discharge, so it has met the security requirements. Dam safety factor calculations without seismic load and with seismic load, for upstream slope and downstream slope when the dam was constructed, when operating with flood water level, when operating in the rainy season (normal water level), when operating in the dry season (minimum water level) and with rapid draw down condition, with SLOPE/W and the Bishop method, the safety factor obtained more than minimum requirement by RSNI M-03-2002.

HUBUNGAN ANTARA KARAKTERISTIK BETON MENGGUNAKAN AGREGAT KASAR LIGHTWEIGHT EXPANDED CLAY AGGREGATE (LECA) I Ketut Sudarsana; I Gede Astawa Diputra; Ni Made Dwi Ari Astuti
JURNAL SPEKTRAN Vol 6 No 1 (2018): Vol. 6, No. 1, Januari 2018
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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Lightweight concrete is a concrete made of lightweight aggregates and has a volume weight ranging from 1140-1840 kg/m3. This research was conducted to find out the correlation between concrete characteristics using LECA coarse aggregate that proportioned for lightweight concrete mixture according to SNI 03-3449-2002 standard with target compressive strength of 20 MPa, 25 MPa, and 30 MPa. The studied characteristics of the LECA concrete include the value of slump, volume weight, compressive strength, tensile strength, and modulus of elasticity. Each mix proportion was made 8 cylinder specimens of ASTM standard, so there were 24 test specimens for the three studied mixtures. The proportion of concrete mixture obtained for the target strength of 20 MPa is 1: 1.16: 2.46 with the value of cement water ratio (w/c) of 0.6, for the concrete strength of 25 MPa is 1: 0.91: 1.99 with the w/c of 0.52, and for the quality of the strength of 30 MPa is 1: 0.65: 0.94 with the w/c of 0.4. The test results obtained the mixed slump value of 155 mm, 145 mm, and 120 mm for the target concrete strength of 20 MPa, 25 MPa, and 30 MPa, respectively. The volume-weight value of LECA concrete ranges from 1564-1692 kg/m3 so that it is categorized as a lightweight concrete. The concrete compressive strength is 22 to 42% of the target concrete strength, and is categorized as a non-structural concrete. The split test tensile strength is 12 - 18% of its compressive strength. Increasing the value of LECA concrete compressive strength can also increase in its tensile strength and modulus of elasticity. Keywords: lightweight concrete, LECA aggregate, concrete characteristics, compressive strength, tensile strength.

ANALISIS SIKAP DAN PERILAKU KONSUMEN TERHADAP PEMILIHAN RUMAH TINGGAL PADA KAWASAN SUNSET GARDEN DI KOTA DENPASAR, BALI I K. Ade Siswanta; I K. Sudarsana; I Gst. Ketut Sudipta
JURNAL SPEKTRAN vol 2, No 1, Januari 2014
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

The research is motivated by the more selective consumers in choosing a house which impact on changes in market conditions ongoing. Developers should anticipate factors that influence changes in market conditions, such as attitudes and behaviors of consumers in choosing a house. One excample of this condition is development of Sunset Garden area located at Jalan Pura Mertasari Sunset Road, Denpasar, Bali which is this properties are able to attract consumers to buy houses in this area although this price of the house is quite expensive. Therefore, the research was conducted to determine factors that are considered in the selection of residential, consumer attitudes and behavior on the selection of a house and the relationship of consumer characteristics and attributes of products offered in this area. This study used research instruments such as questionnaires to obtain information on the characteristics of respondents and the four components of the attitudes and behavior of the level of confidence, the level of evaluation, the level of normative beliefs and motivation levels. The data analysis technique used is a factor analysis to identify the factors considered in choosing a house, attitudes and behavior analysis with Fishbein method and contingency coefficient analysis to determine the magnitude of the relationship variable product attributes and consumer characteristics. The results of this study indicate the factors that affect the house is 5 (five) factors, they are the location and the legality factors, supporting facilities factors, physical factors, factor values, and environmental factors. Attitudes and behavior are shown in choosing a house on Sunset Garden Zone fall into this category good enough. The results showed that there is a relationship between consumer characteristics and attributes of the product which the consumer's income level has the strongest ties to the variable price of the product.

PARTISIPASI SUBAK DAN PEMERINTAH TERHADAP OPERASI DAN PEMELIHARAAN PASCA PEMBANGUNAN INFRASTRUKTUR DISIMP II PADA DAERAH IRIGASI GADON DAS SUNGI DI KABUPATEN TABANAN Wayan Yuliartha; I Nyoman Norken; Kadek Diana Harmayani
JURNAL SPEKTRAN Vol 6 No 1 (2018): Vol. 6, No. 1, Januari 2018
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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lack of Subakparticipation as a water user farmer association (P3A) and the Government of the Operation and Maintenance of the irrigation network which resulted in disruption of the network as a whole. In line with this, one of the activities to be carried out is the rehabilitation of Irrigation network in the River Basin of Empas-Sungi especially in GadonIrrigation Area in Tabanan on the activities of DISIMP II (Decentralized Irrigation System Improvement Project in Eastern Region of Indonesia Phase II), which aims to restore and improve the functions of network facilities and irrigation.The study was conducted on Gadon D.I Watershed of SungiRiver with explorative methods, that is, studying and evaluating DI Gadon on the Watershed of Sungi River, by conducting interviews with members of Subak and relevant agencies. 73 respondents were selected based on purposive sampling method to measure attitudes, opinions and perceptions of Subak and the Government using Likert scale. Data were analyzed using descriptive qualitative methods and Linear regression to determine the role of water control system and the government against the post-construction operation and maintenance of infrastructure of DISIMP II in Gadonirrigated areas in the watershed of Sungi River in Tabanan Regency.Regression analysis showed that the Government had shown a greater role withthe beta standardizedcoefficient value of 0.499 (49.9%), followed by the role of Subak / P3A amounting to 0.344 or 34.4% of the Operations and Maintenance while 15.7% was influenced by factors that had not been included in this study. In this study, Subak / P3A had the participation or role lower than the participation of the government. The results also showed that the increase in government participation and Subakwill improve the operation and maintenance of the irrigation network of post Infrastructure Development of DISIMP II either partially or simultaneously. Keywords: Participation, SubakGadon, Government, Operations and Maintenance.

ANALISIS TINGKAT KEMATANGAN (MATURITY LEVELS) UNIT LAYANAN PENGADAAN KABUPATEN BADUNG I Gde Uma Darmapramita; I M. Alit K. Salain; Mayun Nadiasa
JURNAL SPEKTRAN Vol. 3, No. 2, Juli 2015
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

The implementation of government procurement of goods and service is governed by presidential regulation number 70 year of 2012. According to that, in Badung Regency implemented centralized in Procurement Service Unit of Badung Regency. As the one of Indonesia procurement unit pilot, Procurement Service Unit of Badung Regency has given the opportunity to perform a self assessment of its maturity levels as government unit. The objective of this research is to find factors that influence Procuremet Service Unit of Badung Regency maturity levels, and also to find out in what level is Procurement Service Unit of Badung Regency stand. Data collection for this research have done by using questionnaire that involve 50 respondents who understand very well about the duties and function of Procurement Service Unit of Badung Regency to perform a government procurement of good and services. The data analysis have been performed by use of factor analysis and supported by SPSS program. The result shows there are 3 factors that influent the Procurement Service Unit of Badung Regency maturity levels, which are : the synergy and organization culture, resources and risk management and organization’s performance development. Whereas the maturity levels of Procurement Service Unit of Badung Regency is stand at compliance. Based to the factors that formed, the highly commitment and strong leadership of Badung Regency leader are very decisive to push ahead the enhancement and the development of Procurement Service Unit of Badung Regency. First thing can be done is to establish an independent Procurement Service Unit therewith its Procurement Unit Development road maps that can be tiered and sustainable plan, monitor and evaluate

ANALISIS KEBERHASILAN PENGEMBANGAN PROYEK PROPERTI KOMERSIAL BANGUNAN CAMPURAN I Nyoman Yudha Astana; G. A.P. Candra Dharmayanti; Vava Bensa Delaranto
JURNAL SPEKTRAN Vol 7 No 1 (2019): Vol. 7, No.1, Januari 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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ANALYSIS OF SUCCESSFUL PROJECT DEVELOPMENT OF MIXED-USE COMMERCIAL PROPERTY ABSTRACT Property industry in Indonesia has contributed 9.4% againts national Brutto Domestic Product during 2016, and property industry growth in 2017 is predicted raise up to 15% from previous year with total capitalization in amount of 318 trillion rupiahs. Property companies have often run their property project without proper strategy and planning, and this circumstance causes property project failure in achieving the initial goal. That occured situation will have serious implication concerning to company reputation, budget, project neighbour, urban planning, possibility of criminal around project site, and tax revenue target. The objective of this research is to identify factors that affecting the succesful project development of mixed-use commercial property, and how the affects are. Respondents are the experts who worked at public listed property companies that registered in Indonesia Stock Exchange, for Property and Real Estate sub-sector, at period of 2016 – 2018. This research have two stages, first to reduce initial confirmatory indicators based on previous references by using Factor Analysis model, and second to analize whether reduced indicators could affect the successful project development of mixed-use commercial property by using Partial Least Square model. The result of analysis shows that the affecting factors are: X1 (Product Diversity and Permits), X2 (Feasibility Study), X3 (Funding and Construction Supervise), X4 (Product Quality and Operational Management), X5 (Design), X6 (Ease of Execution), X7 (Marketing Strategy) and X8 (Location and Building Maintenance). Correlation amongst variable shown by equation model Y = 0.167 X1 + 0.219 X2 + 0.196 X3 + 0.155 X6 + 0.226 X7 + 0.204 X8. However the factors that have positive and significant effect are: X7 (significant value 3.501), X8 (significant value 2.912), X6 (significant value 2.430), X2 (significant value 2.427), X3 (significant value 2.282) and X1 (significant value 2.083).

PENGARUH PENGETAHUAN KESELAMATAN DAN KESEHATAN KERJA TERHADAP PERILAKU PEKERJA KONSTRUKSI PADA PROYEK JALAN TOL NUSA DUA-NGURAH RAI–BENOA Made Bayu Sambira Teja; IN Sutarja; Gd Astawa Diputra
JURNAL SPEKTRAN Vol 5 No 1 (2017): Vol. 5, No. 1, Januari 2017
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Abstract : There is incompatibility between the understanding of Occupational Health and Safety (OHS) knowledge with the application of construction workers behavior on the Nusa Dua - Ngurah Rai - Benoa Toll Road Project Pack 3, where the toll road project was built above the sea. There are workers who work with unsafe although they already know how it should work safely, and there are also workers who found himself competent, but need direction and guidance. Therefore, need to know the influence of occupational health and safety knowledge on construction workers behavior seen from several aspects such as definitions and initiation, management systems, mechanisms of personal protective devices, facilities and infrastructure, as well as the risk of OHS. The sampling technique used Non probability sampling with Incidental Sampling method. Data were taken from the assessment of respondents' answers to the questionnaire by workers sampled in the research. Correlation analysis is used to determine the relationship between knowledge of OHS with worker behavior. Regression analysis was used to explain of the knowledge of OHS aspects influence on construction workers behavior together by using the multiple linear regression analysis and partial by using simple linear regression analysis. The research result showed that there is a positive correlation between knowledge of OHS with worker behavior. In term of the OHS knowledge aspects, the use of personal protective devices mechanism aspects and utilization of facilities and infrastructure at work site affect positively / directly proportional and not significant, while aspects understanding of the definition and initiation, understanding of the OHS management system and an understanding of the risks effect Negative / inversely and not significant on the application of construction workers behavior in a secure and safe.

PERBANDINGAN NILAI SATURATION FLOW ANTARA METODE TIME SLICE DENGAN PENDEKATAN DPU 1997. (STUDI KASUS: PERSIMPANGAN JALAN KEBO IWA DENGAN JALAN ARTERI GATOT SUBROTO BARAT) Nyoman Widana Negara; Putu Kwintaryana; I Gede Arya Satria Bandesa Wibawa
JURNAL SPEKTRAN Vol 7 No 2 (2019): Vol. 7 No. 2, JULI 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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COMPARISON OF SATURATION FLOW VALUE BETWEEN THE TIME SLICEMETHODS WITH THE DPU (1997) APPROACH. (CASE STUDY: INTERSECTIONKEBO IWA STREET WITH WEST ARTERIAL ROAD GATOT SUBROTO)ABSTRACTSaturation flow is an important factor in the process of planning, designing and evaluating traffic lightjunctions. The purpose of this study is to find out protected saturation flow in traffic light junctions. Traffic volumedata obtained from the Automatoc Traffic Control System (ATCS) recorded, and the number of residents obtainedfrom the relevant agencies. While data such as geometric intersections, traffic signal aspects and side frictionswere survey manually. The research design used is a comparative analysis between saturation flow measurementsbased on the Time Slice method and the DPU (1997) approach. In this study applied 2 (two) treatments, namelyTreatment-1; measurement and analysis of saturation flow values based on lane width and Treatment-2;measurement and analysis of saturaton flow values based on total approach width. The results of the measurementand analysis in Treatment-1, obtained that the saturation flow value is very varied depending on the pattern oftraffic movements. In the straight lane movement (S1-1), the value of saturation flow based on the Time Slicemethod obtained at 2.130 pcu / hour is greater than 10% compared to DPU (1997) of 1.976 pcu / hour. Meanwhilein the straight lane with the right turn movement (S1.2), the saturation flow value based on the Time Slice methodof 1.681 pcu / hour is 13% smaller than DPU (1997) of 1,935 pcu / hour. Whereas, the results of measurement andanalysis at Treatment-2; the saturation flow value is relatively the same, with the value of saturation flowrespectively is based on the Time Slice method of 3.856 pcu / hour, DPU (1997) of 3,870 pcu / hour and thecombined saturation flow at Treatment-1 is 3,811 pcu / hour .

MANAJEMEN RISIKO PADA PEMBANGUNAN PENGEMBANGAN HOTEL YANG SEDANG BEROPERASI ( STUDI KASUS PADA PEMBANGUNAN EXTENSION VILLA HOTEL ALILA UBUD ) I Ketut Yasa Dharmika; GAP. Candra Dharmayanti; IBN. Purbawijaya
JURNAL SPEKTRAN Vol. 3, No. 2, Juli 2015
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Construction of the hotel development is carried out without cessation of the hotel operations have a bigger challenge because of many things such as: accesses to the hotel, material loading area, noise, safety of guests and hotel staff, working time, demonstrations, etc should be well managed in order to minimize the impacts to hotel operation. Risk is the chance of occurrence of adverse events, which is caused by the uncertainty. The research aims to identify, analyze and how the risks can be managed. The method in this research is Descriptive Qualitative Risk Analisis. Respondents determined by Purposive Sampling, from various stakeholders who are competent in this development. The research are identified 47 risks. Eleven risks are unacceptable risk includes : noise, licensing, planning of MEP works, declining of contractor profit, the rising cost for build a new access roads, land slides, limited parking, hotel access interference, discomfort of the hotel’s guests and staff, disruption in the project work time and delay of project completion due to interruption by the hotel operations. Nineteen risks are undesirable risk includes: public opinion, decreasing of green open land, insufficient capacity of the existing facilities, difficulties in the hotel's marketing, declining of the hotel room’s selling prices, the declining of satisfaction level of hotel guests, decreasing of hotel’s profits, lack of project scope, nappropriate strategy for supplying material and equipment and lack of competence of the project consultants and contractors, inappropriate standard of job’s handling, lack of quality control, inappropriate project organizational, improper work methods, limited area for materials loading, decreasing of cleanliness levels of the hotel, insufficient noise isolation blocks. Ten risks are acceptable risk and seven risks are negligible risk. Major risks are unacceptable and undesirable risk, which are need to be managed by determining their allocation, ownership and mitigation actions.

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